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Santos PS, Vitali FC, Fonseca-Souza G, Maia LC, Cardoso M, Feltrin-Souza J, Fraiz FC. Dentin hypersensitivity and toothache among patients diagnosed with Molar-Incisor Hypomineralization: A systematic review and meta-analysis. J Dent 2024; 145:104981. [PMID: 38582436 DOI: 10.1016/j.jdent.2024.104981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/29/2024] [Accepted: 03/31/2024] [Indexed: 04/08/2024] Open
Abstract
OBJECTIVES To determine the prevalence of dentin hypersensitivity (DH) and toothache in patients with Molar-Incisor Hypomineralization (MIH); and evaluate whether patients with MIH have greater likelihood of presenting DH/toothache than controls. DATA Studies evaluating DH/toothache in patients with MIH were included. Studies focusing on other enamel defects were excluded. SOURCES Eight databases, including grey literature, were searched in January 2024. STUDY SELECTION The methodological quality of studies was assessed using the Joanna Briggs Institute checklist for Cross-sectional studies. Proportion and association meta-analyses, subgrouped by diagnostic methods, were conducted. The certainty of evidence was assessed using GRADE approach. RESULTS Fifteen studies were included in the qualitative analysis and fourteen in the meta-analyses. Two studies fulfilled all items of the methodological quality checklist. The overall prevalence of DH/toothache among patients with MIH was 45 %. Prevalence rates of 30 %, 47 %, and 55 % were estimated based on proxy reports, self-reports, and air stimulation, respectively. The overall prevalence of DH/toothache per tooth was 22 %, ranging from 16 % to 29 % according to the diagnostic method. Patients with MIH demonstrated higher likelihood of presenting proxy reports of DH/toothache compared to those without MIH (OR: 1.51, 95 % CI [1.23-1.85], P < 0.01, I2: 0 %). The certainty of evidence was very low, mainly due to the low methodological quality of included studies and high inconsistency. CONCLUSIONS The global prevalence of DH/toothache was 22 %, per tooth, and 45 % per patient. Estimates vary according to diagnostic methods. Patients with MIH showed higher likelihood of presenting proxy reports of DH/toothache than controls. CLINICAL SIGNIFICANCE This systematic review contributes valuable information to the dental literature by assessing the prevalence and associated factors of DH/toothache in patients with MIH. The findings can guide future research, inform clinical practices and public policy makers, and ultimately improve the management of oral health of patients with MIH. REGISTRATION PROSPERO CRD42023432805.
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Affiliation(s)
- Pablo Silveira Santos
- Department of Dentistry, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil; Department of Stomatology, Universidade Federal do Paraná, Curitiba, Paraná, Brazil.
| | - Filipe Colombo Vitali
- Department of Dentistry, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Lucianne Cople Maia
- Department of Pediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariane Cardoso
- Department of Dentistry, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Fabian Calixto Fraiz
- Department of Stomatology, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
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Wanderley Lacerda RH, Filgueiras VM, Guedes Mendonça AC, Vieira AR. Molar-incisor hypomineralization in a cohort of individuals born with cleft lip and palate. Orthod Craniofac Res 2024; 27 Suppl 1:21-26. [PMID: 37643023 DOI: 10.1111/ocr.12708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 08/07/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
OBJECTIVE This study aimed to investigate the frequency of molar-incisor hypomineralization (MIH) in individuals born with cleft lip and or cleft palate. SETTINGS AND SAMPLE Three hundred eighty-six individuals born with cleft lip and/or palate before orthodontic treatment. METHODS All the individuals were submitted to a clinical examination and intraoral standardized photos. The registration of MIH was taken by two orthodontists and analysed in association with the cleft type and laterality. The Kruskal-Wallis test and the regression test were used to compare the frequency of molars and incisors affected according to cleft type and laterality, sex and age. RESULTS We found a frequency of 67.87% of MIH in the studied sample. The frequency varied from 25% (in individuals born with cleft palate) to 77% in individuals born with bilateral cleft lip and palate). The number of affected molars was statistically different depending on cleft type and laterality (P < .001- Kruskal-Wallis test). Differences were found between individuals born with unilateral cleft lip and palate and unilateral cleft lip and alveolus (P = .03), and with isolated cleft palate (P = .03), and between individuals born with bilateral cleft lip and palate and born with unilateral cleft lip and alveolus (P = .01), and cleft palate (P = .01). Sex (P = .21) and age (P = .36) had no influence on the frequency of MIH. A positive correlation was found between the number of molars affected and incisors affected (P < .001). CONCLUSION Individuals born with cleft lip and palate have a higher frequency of MIH, and the complexity of cleft type was associated with the number of affected molars.
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Affiliation(s)
| | - Vitor Marques Filgueiras
- Cleft Lip and Palate Center, University Hospital of Paraiba, Federal University of Paraiba, Paraíba, Brazil
| | | | - Alexandre Rezende Vieira
- Department of Oral and Craniofacial Sciences, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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da Silva FMF, de Carvalho FM, Franco ALMM, Soares TRC, Fonseca-Gonçalves A, Vieira AR, Neves ADA, de Castro Costa M. Association between molar hypomineralization, genes involved in enamel development, and medication in early childhood: A preliminary study. Int J Paediatr Dent 2024; 34:211-218. [PMID: 37337785 DOI: 10.1111/ipd.13094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Molar hypomineralization (MH) is defined as a multifactorial condition, and thus, its presence may be defined by interactions between environmental and genetic factors. AIM To evaluate the association between MH, genes involved in enamel development, and the use of medication during pregnancy in early childhood. DESIGN One hundred and eighteen children, 54 with and 64 without MH, were studied. The data collected included demographics, socioeconomic data, and the medical history of mothers and children. Genomic DNA was collected from saliva. Genetic polymorphisms in ameloblastin (AMBN; rs4694075), enamelin (ENAM; rs3796704, rs7664896), and kallikrein (KLK4; rs2235091) were evaluated. These genes were analyzed by real-time polymerase chain reaction using TaqMan chemistry. The software PLINK was used to compare allele and genotype distributions of the groups and to assess the interaction between environmental variables and genotypes (p < .05). RESULTS The variant allele KLK4 rs2235091 was associated with MH in some children (odds ratio [OR]: 3.75; 95% confidence interval [CI] = 1.65-7.81; p = .001). Taking medications in the first 4 years of life was also associated with MH (OR: 2.94; 95% CI = 1.02-6.04; p = .041) and specifically in association with polymorphisms in ENAM, AMBN, and KLK4 (p < .05). The use of medications during pregnancy was not associated with MH (OR: 1.37; 95% CI = 0.593-3.18; p = .458). CONCLUSION The results of this study suggest that taking medication in the postnatal period appears to contribute to the etiology of MH in some evaluated children. There may be a possible genetic influence of polymorphisms in the KLK4 gene with this condition.
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Affiliation(s)
- Fernanda Mafei Felix da Silva
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Thais Rodrigues Campos Soares
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andréa Fonseca-Gonçalves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Rezende Vieira
- Department of Oral & Craniofacial Sciences, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Aline de Almeida Neves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcelo de Castro Costa
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Sharma A, Muthu MS, Vettriselvi V, Nuvvula S, Gayathri T. AMELX gene association to early childhood caries in south-Indian children: a case-control study. Eur Arch Paediatr Dent 2024; 25:201-210. [PMID: 38409576 DOI: 10.1007/s40368-024-00866-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 01/15/2024] [Indexed: 02/28/2024]
Abstract
PURPOSE Genetic variants of AMELX gene can affect the protein content, organization of enamel prisms, microstructure and microhardness of the enamel, thus altering the caries susceptibility. The present study aims to assess the association between polymorphisms rs17878486, rs5934997, and rs5933871 of AMELX gene and Early Childhood Caries (ECC). MATERIALS AND METHODS This case-control study was conducted on 200 participants, aged 3-6 years, with 100 controls and 100 children with ECC. A questionnaire was used to collect demographic data, birth-weight, type of delivery, oral hygiene practices, feeding history and 24-h diet diary. DNA was isolated from blood and subjected to PCR followed by Sanger sequencing. RESULTS The CC genotype of rs17878486 showed an OR of 1.93 (0.34-10.81; P = 0.73). In a recessive model, the CC genotype of rs17878486 reported an OR of 2.04 (0.36-11.40; P = 0.68); rs5593871 reported an OR of 1.00 (0.31-3.21). Statistically significant differences (P ≤ 0.05) between genotype and allele frequencies of rs17878486, rs5934997, and rs5933871 were not observed between children with ECC and the controls. CONCLUSION Polymorphisms of AMELX gene did not show a significant association with ECC in this population. However, documentation of genetic data in a global context of ECC may be essential for the future.
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Affiliation(s)
- A Sharma
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
- Department of Pediatric and Preventive Dentistry, Indira Gandhi Institute of Dental Sciences, Sri Balaji Vidyapeeth, Pillayarkuppam, Pondicherry, India
| | - M S Muthu
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.
- Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman, United Arab Emirates.
| | - V Vettriselvi
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - S Nuvvula
- Department of Pediatric and Preventive Dentistry, Narayana Dental College and Hospital, Nellore, India
| | - T Gayathri
- Faculty of Allied Health Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
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Winkler JR, Dixon BL, Singh I, Soto R, Qiu Y, Zhang Y, Porucznik CA, Stanford JB. Prenatal exposure to environmental toxins and comprehensive dental findings in a population cohort of children. BMC Oral Health 2024; 24:326. [PMID: 38468230 DOI: 10.1186/s12903-023-03786-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 12/15/2023] [Indexed: 03/13/2024] Open
Abstract
Environmental toxins are known to have many impacts on growth and development in humans, starting in utero. Alterations in amelogenesis, caused by chemical and physical trauma that occur during the antenatal, perinatal and postnatal time periods, may result in developmental defects in deciduous and permanent tooth enamel, as demonstrated in animal studies. These defects can be clinically visible and result in a variety of morphological and functional problems in the dentition. Since enamel does not remodel after formation, it may serve as a permanent record of insults during organ development.Our primary purpose was to investigate any possible relationship between intrauterine exposure to endocrine disrupting chemicals (phenols and phthalates) and developmental defects in enamel in children, while also accounting for fluoride exposure. Our secondary purpose was to report descriptively on findings from comprehensive dental examinations performed on 356 children that were drawn from the general paediatric population. A cohort of children from the Utah Children's Project (N = 356) that had full medical exams, comprehensive medical and family histories and available biospecimens were given extraoral and intraoral examinations. They also completed an oral health questionnaire. Standardized intraoral photographs were taken of the teeth and viewed by standardised examiners and the dental observations were recorded for a full inventory of findings, including: tooth morphology, caries, restorations, colorations, attrition, erosion, fractures and hypomineralization. Perinatal maternal urine samples were assessed for the concentration of fluoride, phenols and phthalates, including bisphenol A (BPA).Pairwise statistical analyses were done to correlate the dental findings with one another and with the presence of environment chemicals found in the urine samples. Hypomineralization was the most common finding (96% of children; 37% of deciduous teeth, 42% of permanent teeth), consistent with molar incisor hypomineralization (MIH) described in other human populations. No consistent correlations were seen between dental findings and the presence of phenols and phthalates in prenatal urine, but the number of samples available for the assessment was limited (n = 35).In conclusion, we found a high proportion of dental hypomineralization in a population based paediatric cohort, but did not find an association with prenatal exposure to phenols and phthalates.
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Affiliation(s)
- James R Winkler
- School of Dentistry, University of Utah, Salt Lake City, UT, USA
| | - Barbara L Dixon
- School of Dentistry, University of Utah, Salt Lake City, UT, USA
| | - Ishita Singh
- Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Ray Soto
- Division of Public Health, Department of Family and Preventive Medicine, University of Utah School of Medicine, 375 Chipeta Way, Suite A, Salt Lake City, UT, 84108, USA
| | - Yuqing Qiu
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Yue Zhang
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Christina A Porucznik
- Division of Public Health, Department of Family and Preventive Medicine, University of Utah School of Medicine, 375 Chipeta Way, Suite A, Salt Lake City, UT, 84108, USA
| | - Joseph B Stanford
- Division of Public Health, Department of Family and Preventive Medicine, University of Utah School of Medicine, 375 Chipeta Way, Suite A, Salt Lake City, UT, 84108, USA.
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Santos PB. Why orthodontists need to know about molar incisor hypomineralization. Am J Orthod Dentofacial Orthop 2024; 165:256-261. [PMID: 38149955 DOI: 10.1016/j.ajodo.2023.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 10/01/2023] [Accepted: 10/01/2023] [Indexed: 12/28/2023]
Abstract
Molar incisor hypomineralization (MIH) is a systemic developmental qualitative defect of the enamel that affects 1-4 first permanent molars with or without incisor involvement. Enamel hypomineralization is identified visually as a demarcated opacity with a clear border with varying extensions and can be white, yellow, or brown. This opacity is characterized by a reduced quality of enamel that is of normal thickness but not fully mineralized. It is very common for the affected teeth to present with posteruptive breakdown, making them susceptible to caries, leading to their subsequent loss. Thus, MIH is a significant dental problem with clinical, economic, and psychosocial implications. The planned extraction of compromised teeth is a valid alternative to complex restorative treatment. Orthodontists' involvement is essential in developing effective treatment strategies for children affected by MIH, contributing to their oral health and well-being.
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Affiliation(s)
- Patrícia Bittencourt Santos
- Department of Orthodontics and Pediatric Dentistry, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
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7
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Niu C, Xu K, Hu Y, Jia Y, Yang Y, Pan X, Wan R, Lian H, Wang Q, Yang J, Li Y, Rosas I, Wang L, Yu G. Tuftelin1 drives experimental pulmonary fibrosis progression by facilitating stress fiber assembly. Respir Res 2023; 24:318. [PMID: 38105232 PMCID: PMC10726504 DOI: 10.1186/s12931-023-02633-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a progressive interstitial lung disease (ILD) with unknown etiology, characterized by sustained damage repair of epithelial cells and abnormal activation of fibroblasts, the underlying mechanism of the disease remains elusive. METHODS To evaluate the role of Tuftelin1 (TUFT1) in IPF and elucidate its molecular mechanism. We investigated the level of TUFT1 in the IPF and bleomycin-induced mouse models and explored the influence of TUFT1 deficiency on pulmonary fibrosis. Additionally, we explored the effect of TUFT1 on the cytoskeleton and illustrated the relationship between stress fiber and pulmonary fibrosis. RESULTS Our results demonstrated a significant upregulation of TUFT1 in IPF and the bleomycin (BLM)-induced fibrosis model. Disruption of TUFT1 exerted inhibitory effects on pulmonary fibrosis in both in vivo and in vitro. TUFT1 facilitated the assembly of microfilaments in A549 and MRC-5 cells, with a pronounced association between TUFT1 and Neuronal Wiskott-Aldrich syndrome protein (N-WASP) observed during microfilament formation. TUFT1 can promote the phosphorylation of tyrosine residue 256 (Y256) of the N-WASP (pY256N-WASP). Furthermore, TUFT1 promoted transforming growth factor-β1 (TGF-β1) induced fibroblast activation by increasing nuclear translocation of pY256N-WASP in fibroblasts, while wiskostatin (Wis), an N-WASP inhibitor, suppressed these processes. CONCLUSIONS Our findings suggested that TUFT1 plays a critical role in pulmonary fibrosis via its influence on stress fiber, and blockade of TUFT1 effectively reduces pro-fibrotic phenotypes. Pharmacological targeting of the TUFT1-N-WASP axis may represent a promising therapeutic approach for pulmonary fibrosis.
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Affiliation(s)
- Caoyuan Niu
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Kai Xu
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Yanan Hu
- The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Yanling Jia
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Yuexia Yang
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Xiaoyue Pan
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Ruyan Wan
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Hui Lian
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Qiwen Wang
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Juntang Yang
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Yajun Li
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China
| | - Ivan Rosas
- Division of Pulmonary, Critical Care and Sleep Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Lan Wang
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China.
| | - Guoying Yu
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Organ Fibrosis, College of Life Science, Henan Normal University, 46 Jianshe Road, Xinxiang, 453007, Henan, China.
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Rizzardi KF, Rizzardi RF, Crescente CL, Tognetti VM, de Sousa ET, Parisotto TM. Relationship between cariogenic bacteria and molar incisor hypomineralization in Brazilian schoolchildren. Transl Pediatr 2023; 12:2001-2009. [PMID: 38130579 PMCID: PMC10730958 DOI: 10.21037/tp-23-48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 10/22/2023] [Indexed: 12/23/2023] Open
Abstract
Background Teeth with defects in their structure, such as the ones affected by molar-incisor hypomineralization (MIH), are more susceptible to carious lesions. Caries is a complex and multifactorial disease highly prevalent in childhood. The present research evaluated the relationship between the stages of MIH and cariogenic bacteria in children. Methods After examining 566 schoolchildren, four groups of 10 children each were formed: healthy (G1), mild MIH (G2 and G3), and severe MIH + caries (G4). Dental biofilm was assessed to quantify Streptococcus mutans (SM) and Lactobacillus spp. (LB) using real-time polymerase chain reaction (RT-PCR). Results LB counting in biofilm samples of healthy children (G1) and those with mild MIH characterized by white opacities (G2) were not significantly different. The same happened when the ones with yellow opacities (G3) were compared with severe MIH + caries (G4) (P>0.05). The post hoc Tukey test proved that G4 had greater levels of SM and LB when compared with G2 (P<0.05); however, the control group did not diverge from the others considering SM (P>0.05). Increased LB enhanced the severity of MIH [rate ratio (RR): 7.706; P=0.035]. Conclusions LB was influenced by different degrees of MIH and the presence of caries and could guide clinical decisions and patients' recommendations to prevent carious lesions in MIH children.
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Affiliation(s)
- Karina Ferreira Rizzardi
- Laboratory of Clinical and Molecular Microbiology, University São Francisco, Bragança Paulista, São Paulo, Brazil
| | - Rodrigo Ferreira Rizzardi
- Laboratory of Clinical and Molecular Microbiology, University São Francisco, Bragança Paulista, São Paulo, Brazil
| | - Camila Lopes Crescente
- Laboratory of Clinical and Molecular Microbiology, University São Francisco, Bragança Paulista, São Paulo, Brazil
| | - Valdineia Maria Tognetti
- Laboratory of Clinical and Molecular Microbiology, University São Francisco, Bragança Paulista, São Paulo, Brazil
| | - Emerson Tavares de Sousa
- Department of Preventative and Restorative Dental Sciences, School of Dentistry, University of California, San Francisco, CA, USA
| | - Thaís Manzano Parisotto
- Laboratory of Clinical and Molecular Microbiology, University São Francisco, Bragança Paulista, São Paulo, Brazil
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9
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Torlińska-Walkowiak N, Majewska KA, Sowińska A, Kędzia A, Opydo-Szymaczek J. Developmental enamel defects and dental anomalies of number and size in children with growth hormone deficiency. Sci Rep 2023; 13:14707. [PMID: 37679467 PMCID: PMC10484903 DOI: 10.1038/s41598-023-41892-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/01/2023] [Indexed: 09/09/2023] Open
Abstract
Growth hormone is meaningfully involved in the processes of tooth cells differentiation and tissue formation. The aim of the study was to evaluate the occurrence of dental anomalies: microdontia, macrodontia, hypodontia and developmental defects of enamel (DDE) amongst a group of isolated growth hormone deficient (GHD) patients and healthy children. This cross-sectional study was based on a group of 101 Caucasian children: 33 with GHD (mean age 10.94, SD 2.51) and 68 being healthy, normal height subjects (mean age 10.4, SD 2.38). The dental examination in primary and permanent teeth was carried out by one trained and calibrated dentist, in accordance with the WHO guidelines. It was observed that 33% of GHD patients suffer from dental anomalies (hypodontia, microdontia or macrodontia), the difference between the study group and the control group was statistically significant (33% vs 4%, p < 0.001). Hypodontia and microdontia/macrodontia were the most common problems affecting 18% and 21% of the GHD individuals, respectively. The prevalence of DDE did not differ significantly between GHD group and the control group (58% vs 48%, p > 0.05). As children with GHD present more dental anomalies than their healthy coevals, clinicians should be aware of the possible oral health problems associated with GHD and consider dental screening and management as part of the patient's overall health care plan.
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Affiliation(s)
- Natalia Torlińska-Walkowiak
- Department of Pediatric Dentistry, Poznan University of Medical Sciences, 70 Bukowska Street, 60-812, Poznan, Poland.
| | - Katarzyna A Majewska
- Department of Pediatric Diabetes, Auxology and Obesity, Poznan University of Medical Sciences, 27/33 Szpitalna Street, 60-572, Poznan, Poland
| | - Anna Sowińska
- Department of Computer Science and Statistics, Poznan University of Medical Sciences, 7 Rokietnicka Street, 60-806, Poznan, Poland
| | - Andrzej Kędzia
- Department of Pediatric Diabetes, Auxology and Obesity, Poznan University of Medical Sciences, 27/33 Szpitalna Street, 60-572, Poznan, Poland
| | - Justyna Opydo-Szymaczek
- Department of Pediatric Dentistry, Poznan University of Medical Sciences, 70 Bukowska Street, 60-812, Poznan, Poland
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Garot E, Lopez Onaindia D, Couture C, Morales JI, Cebrià A, Oms X, Manton DJ, Lozano M. Insights into molar-incisor hypomineralisation in past populations: A call to anthropologists. INTERNATIONAL JOURNAL OF PALEOPATHOLOGY 2023; 42:18-26. [PMID: 37523814 DOI: 10.1016/j.ijpp.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/27/2023] [Accepted: 07/21/2023] [Indexed: 08/02/2023]
Abstract
OBJECTIVE Molar incisor hypomineralisation (MIH) is a developmental defect of enamel affecting the first permanent molars and often the incisors and affecting approximately 13% of the current population worldwide. Here, we aim to highlight potential differential diagnoses of MIH in archaeological collections (taphonomic discoloration, amelogenesis imperfecta, fluorosis, rachitic teeth, etc.). METHODS Causative factors of dental discolourations are identified through a literature review. RESULTS In an archaeological context, the sediments contained in the burial soil can lead to tooth discoloration. Taphonomic staining of the dentition may have a similar appearance to enamel hypomineralisation, and thus is a confounding factor that has the potential to cause miscalculation of the true prevalence of MIH within archaeological collections. Some rare medieval cases are reported in the modern literature but without microanalysis, misdiagnosis is possible. The aetiological factors of MIH are unknown but probably follow the multifactorial model involving systemic medical and genetic factors. CONCLUSIONS Systematic detection and diagnosis of MIH during anthropological studies is therefore of great interest. SIGNIFICANCE The hypotheses that only contemporary agents are causative factors of MIH could be refuted by the discovery of individuals living before medication or pollutants. The identification of MIH in a group of individuals also provides information regarding the health status of a population and reflects stress occurring during the period of mineralisation of the first permanent molars after secretion of the enamel matrix. LIMITATIONS Taphonomic alterations of archaeological remains prevent MIH diagnosis. SUGGESTIONS FOR FUTURE RESEARCH MIH diagnosis can be difficult in archaeological series and further non-destructive methods (microtomography, elemental analyses, etc.) are required.
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Affiliation(s)
- Elsa Garot
- Univ. de Bordeaux, UFR des Sciences Odontologiques, Bordeaux, France; Univ. Bordeaux, CNRS, MCC, PACEA, UMR 5199, Pessac F-33600, France; Centre de Compétence des Maladies Rares Orales et Dentaires, CCMR O-Rares, C.H.U. de Bordeaux, Bordeaux, France.
| | | | | | - Juan Ignacio Morales
- Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA), Zona Educacional 4, Campus Sescelades URV (Edifici W3), Tarragona 43007, Spain; Departament d'Història i Història de l'Art, Universitat Rovira i Virgili, Avinguda de Catalunya 35, Tarragona 43002, Spain
| | - Artur Cebrià
- Department Història i Arqueologia, Seminari d'Estudis i Recerques Prehistòriques (SERP). Facultat de Geografia i Història, Universitat de Barcelona, C/ Montalegre 6-8, 08001 Barcelona, Spain
| | - Xavier Oms
- Department Història i Arqueologia, Seminari d'Estudis i Recerques Prehistòriques (SERP). Facultat de Geografia i Història, Universitat de Barcelona, C/ Montalegre 6-8, 08001 Barcelona, Spain
| | - David John Manton
- University of Groningen, University Medical Centre Groningen (UMCG), Cariology and Paediatric Dentistry, Centre for Dentistry and Oral Hygiene, the Netherlands; Department of Paediatric Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), Vrije Universiteit Amsterdam and University of Amsterdam, the Netherlands
| | - Marina Lozano
- Institut Català de Paleoecologia Humana i Evolució Social (IPHES-CERCA), Zona Educacional 4, Campus Sescelades URV (Edifici W3), Tarragona 43007, Spain; Departament d'Història i Història de l'Art, Universitat Rovira i Virgili, Avinguda de Catalunya 35, Tarragona 43002, Spain
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da Silva Figueira R, Mustafa Gomes Muniz FW, Costa LC, Silva de Moura M, Moura LDFADD, Mello de Oliveira B, Lima CCB, Rösing CK, de Lima MDDM. Association between genetic factors and molar-incisor hypomineralisation or hypomineralised second primary molar: A systematic review. Arch Oral Biol 2023; 152:105716. [PMID: 37210809 DOI: 10.1016/j.archoralbio.2023.105716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 05/23/2023]
Abstract
OBJECTIVE To determine the association between genetic factors and molar-incisor hypomineralisation (MIH) and/or hypomineralised second primary molars by means of a systematic review. DESIGN A search was performed in Medline-PubMed, Scopus, Embase and Web of Science databases; manual search and search in gray literature were also performed. Selection of articles was performed independently by two researchers. A third examiner was involved in cases of disagreement. Data extraction was performed using an Excel® spreadsheet and independent analysis was performed for each outcome. RESULTS Sixteen studies were included. There was an association between MIH and genetic variants related to amelogenesis, immune response, xenobiotic detoxification and other genes. Moreover, interactions between amelogenesis and immune response genes, and SNPs in the aquaporin gene and vitamin D receptors were associated with MIH. Greater agreement of MIH was found in pairs of monozygotic twins than dizygotic twins. The heritability of MIH was 20 %. Hypomineralised second primary molars was associated with SNPs in the hypoxia-related HIF-1 gene and methylation in genes related to amelogenesis. CONCLUSION With very low or low certainty of evidence, an association was observed between MIH and SNPs in genes associated with amelogenesis, immune response, xenobiotic detox and ion transport. Interactions between genes related to amelogenesis and immune response as well as aquaporin genes were associated to MIH. With very low certainty of evidence, hypomineralised second primary molars was associated to a hypoxia-related gene and to methylation in genes related to amelogenesis. Moreover, higher agreement of MIH in pairs of monozygotic twins than dizygotic twins was observed.
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Affiliation(s)
| | | | - Lara Carvalho Costa
- Department of Pathology and Dental Clinic, Federal University of Piauí, Teresina, Piauí, Brazil
| | - Marcoeli Silva de Moura
- Department of Pathology and Dental Clinic, Federal University of Piauí, Teresina, Piauí, Brazil
| | | | - Bibiana Mello de Oliveira
- Post Graduate Program in Genetics and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil; Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
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Chisini LA, Santos FDC, de Carvalho RV, Horta BL, Tovo-Rodrigues L, Demarco FF, Correa MB. Impact of tooth mineral tissues genes on dental caries: a birth-cohort study. J Dent 2023; 133:104505. [PMID: 37031884 DOI: 10.1016/j.jdent.2023.104505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 04/11/2023] Open
Abstract
OBJECTIVE We aimed to investigate whether Single Nucleotide Polymorphisms present in the genes of tooth mineral tissues influence dental caries trajectory across the life course, and if there is an epistatic (gene-gene) interaction between these SNPs. METHODS A representative sample of all 5,914 births from the 1982 Pelotas birth cohort study was prospectively investigated. Dental caries trajectory across the life course was assessed at 15(n=888), 24(n=720), and 31 years old(n=539). Group-based trajectory modelling was used to identify distinct subgroups of individuals whose caries measurements followed a similar pattern over time. Genetic material was collected, and individuals were genotyped [rs4970957(TUFT1), rs1711437(MMP20), rs1784418(MMP20), rs2252070(MMP13), rs243847(MMP2), rs2303466(DLX3), rs11656951(DLX3), rs7501477(TIMP2), rs388286(BMP7), and rs5997096(TFIP11)]. Analyzes were performed for allele and genotype using logistic regression and generalized multifactor dimensionality reduction for epistatic interactions. RESULTS The analyses included 678 individuals, those with allele C (OR=0.74, CI95%[0.59-0.92]), genotype CC in the additive effect (OR=0.52, CI95%[0.31-0.89]), and the genotype TC/CC in dominant effect (OR=0.72, CI95%[0.53-0.98]) on the rs243847(MMP2) were associated with low caries trajectory. Individuals with the allele T (OR=0.79, CI95%[0.64-0.98]) and the genotype TC/CC in dominant effect (OR=0.66, CI95%[0.47-0.95]) on the rs5997096(TFIP11) were associated with low caries trajectory. Positive epistatic interactions were observed involving two (MMP2 and BMP7; p=0.006) and three (TUFT1, MMP2, and TFIP11; p<0.001) loci and high caries trajectory. CONCLUSIONS Some SNPs present in the genes of tooth mineral tissues were associated with caries trajectory and epistatic interactions increasing the network of SNPs involved in individual caries experience. CLINICAL SIGNIFICANCE Single nucleotide polymorphisms in the pathway of tooth mineral tissues genes may contribute significantly to the individual caries experience across the life course.
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Affiliation(s)
- Luiz Alexandre Chisini
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil. Address: 457, Gonçalves Chaves St. 5th floor, Pelotas, Brazil 96015-560.
| | - Francine da Costa Santos
- Graduate Program in Epidemiology, Federal University Pelotas, Address: 1160, Marechal Deodoro St. Pelotas, RS, Brazil 96020-220.
| | - Rodrigo Varella de Carvalho
- Graduate Program in Dentistry, Federal University of Juiz de Fora, Governador Valadares, MG, Brazil. Address: 745, São Paulo St., Governador Valadares, Brazil 35010-180.
| | - Bernardo Lessa Horta
- Post Graduate Program in Epidemiology, Federal University Pelotas, Address: 1160, Marechal Deodoro St. Pelotas, RS Brazil 96020-220.
| | - Luciana Tovo-Rodrigues
- PhD, Graduate Program in Epidemiology, Federal University Pelotas, Address: 1160, Marechal Deodoro St. Pelotas, RS, Brazil 96020-220.
| | - Flávio Fernando Demarco
- Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil. Address: 457, Gonçalves Chaves St. 5th floor, Pelotas, Brazil 96015-560.
| | - Marcos Britto Correa
- DDS, MSc, PhD. Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil. Address: 457, Gonçalves Chaves St. 5th floor, Pelotas, Brazil 96015-560.
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Zhang Y, Wang Y, Zhang Z, Wang Y, Jia J. Study on machine learning of molar incisor hypomineralization in an endemic fluorosis region in central China. Front Physiol 2023; 14:1088703. [PMID: 37008000 PMCID: PMC10050366 DOI: 10.3389/fphys.2023.1088703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 02/22/2023] [Indexed: 03/17/2023] Open
Abstract
Objectives: The aim of the present study was to develop a machine learning model to predict the risk of molar incisor hypomineralization (MIH) and to identify factors associated with MIH in an endemic fluorosis region in central China.Methods: A cross-sectional study was conducted with 1,568 schoolchildren from selected regions. The clinical examination included an investigation of MIH based on the European Academy of Paediatric Dentistry (EAPD) criteria. In this study, supervised machine learning (e.g., logistic regression) and correlation analysis (e.g., Spearman correlation analysis) were used for classification and prediction.Results: The overall prevalence of MIH was 13.7%. The nomograph showed that non-dental fluorosis (DF) had a considerable influence on the early occurrence of MIH and that this influence became weaker as DF severity increased. We examined the association between MIH and DF and found that DF had a protective correlation with MIH; the protective effect became stronger as DF severity increased. Furthermore, children with defective enamel were more likely to experience caries, and dental caries were positively correlated with MIH (OR = 1.843; 95% CI: 1.260–2.694). However, gender, oral hygiene, and exposure to poor-quality shallow underground water did not increase the likelihood of developing MIH.Conclusions: DF should be considered a protective factor within the multifactorial etiology of MIH.
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Affiliation(s)
- Yimeng Zhang
- Henan University School of Stomatology, Kaifeng, China
| | - Yu Wang
- The Key Laboratory of Clinical Resources Translation, Henan University, Kaifeng, China
| | - Zhaoxin Zhang
- Henan University School of Stomatology, Kaifeng, China
| | - Yuqi Wang
- Henan University School of Stomatology, Kaifeng, China
| | - Jie Jia
- Henan University School of Stomatology, Kaifeng, China
- The First Affiliated Hospital of Henan University, Kaifeng, China
- *Correspondence: Jie Jia,
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Khami MR, Asgari S, Valizadeh S, Karami J, Rezaei A, Rezaei N. AMELX and ENAM Polymorphisms and Dental Caries. Int J Dent 2022; 2022:8501179. [PMID: 36624859 PMCID: PMC9825226 DOI: 10.1155/2022/8501179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 12/01/2022] [Accepted: 12/19/2022] [Indexed: 01/02/2023] Open
Abstract
Introduction The variety of the genetic factors playing role in development of dental caries calls for further research in this regard. The aim of the present study was to investigate the differences between caries-free adults and adults with dental caries in terms of polymorphism of caries-related genes (AMELX and ENAM). Methods The present case-control study was performed on 81 adults aged 18-24 years, 41 caries free, and 40 with a DMFT ≥ 4. A questionnaire containing background and demographic information (such as age, gender, time and type of latest dental check-ups, parent's education, oral self-care, and the place of residence in the first 12 years of life) was completed by participants at the time of examination. The blood sample was taken from each participant in the EDTA tube, and PCR was performed. Gene diversity of AMELX and ENAM genes was compared between the two groups. Results Regarding AMELX gene, in the caries-free group 33 (80.5%) and in the group with DMFT ≥ 4, 33 (82.5%) students had TT genotype, but this difference was insignificant. For ENAM gene, in the caries-free group 34 (82.9%) and in the group with DMFT ≥ 4, 39 (97.5%) students had TT genotype, but this difference was insignificant (P value = 0.048, CI 95%:0.02-1.27, and OR = 0.145). Conclusion There was no relationship between TT and TC genotypes of single nucleotide polymorphism of AMELX and ENAM gene and susceptibility to dental caries, but with increasing sample size, there may be a relationship between SNP of ENAM gene and being caries free.
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Affiliation(s)
- Mohammad Reza Khami
- Research Center for Caries Prevention Dentistry Research, Institute Community Oral Health Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Sahar Asgari
- Department of Periodontology, School of Dentistry, Babol University of Medical Sciences, Babol, Iran
| | - Sara Valizadeh
- Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Karami
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
| | - Arezou Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA) Universal Scientific Education and Research Network (USERN), Tehran, Iran
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Molar-Incisor Hypomineralization: Prevalence Comparative Study in 6 Years of Interval. ScientificWorldJournal 2022; 2022:4743252. [DOI: 10.1155/2022/4743252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
The aim of this study was to evaluate the prevalence evolution rate of MIH (molar-incisor hypomineralization) after a 6-year period in Araraquara/SP, Brazil. This population-based study evaluated MIH in 545 schoolchildren (6–12 years of age) and other associated alterations, dental caries and dental fluorosis (DF). A semistructured questionnaire was sent to the schoolchildren’s parents/guardians with the purpose of identifying the socioeconomic profile. Associations between MIH and the clinical characteristics were analyzed by the Poisson analysis of regression with robust variance, estimating the RPc (crude prevalence ratio) with CI 95%. The level of significance of 5% was adopted. The MIH prevalence in Araraquara/SP in 2016 was 14.3% (n = 78), and at this time, an increase of 2% was observed, in comparison with the data of the first prevalence study conducted in 2010 (12.3%). The mild degree compromise was the most prevalent diagnosis in the affected teeth (82.0%). Among children with MIH, the mean number of affected teeth was 2.78. Of the total number of children with MIH, 32.0% presented alterations in both first permanent molars and permanent incisors. There is no significant association between MIH and dental caries experience on permanent dentition (PRc = 1.141; CI 95% 0.709–1.835) or on primary dentition (PRc = 1.132; CI 95% 0.749–1.709). Children with MIH presented significantly less prevalence of dental fluorosis (PRc = 0.505; CI 95% 0.268–0.950). There is no association between MIH and monthly Brazilian minimal wage income (PRc = 1.130; CI 95% 0.655–1.949). It was concluded that the number of MIH cases had increased, revealing a greater need for defining the etiological factors and establishing a correct diagnosis to make it possible to institute early intervention.
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Elzein R, Abdel-Sater F, Mehawej C, Jalkh N, Ayoub F, Chouery E. Identification by whole-exome sequencing of new single-nucleotide polymorphisms associated with molar-incisor hypomineralisation among the Lebanese population. Eur Arch Paediatr Dent 2022; 23:919-928. [PMID: 35986881 DOI: 10.1007/s40368-022-00738-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 07/21/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Molar-incisor hypomineralization (MIH) is a developmental qualitative enamel defect, causing a worldwide challenging dental problem. The etiology of this defect remains unclear. Here we identify by whole-exome sequencing (WES) new single-nucleotide polymorphisms (SNPs) in genes expressed during enamel mineralization and in those modulating prenatal, natal and postnatal risk factors among the Lebanese MIH children: immune system and xenobiotic detoxification. DESIGN Dental examination for MIH was performed based on the MIH index for diagnostic criteria. Saliva samples were collected from 37 non-related, MIH-diagnosed subjects for DNA extraction. WES was performed on the Illumina HiSeq2000 platform. The χ2 test and Fisher's exact test were used to determine relationship between SNPs frequencies and MIH. OR and its 95% CI were used to report the strength of association. The significance threshold was set at 0.05. RESULTS Among the Lebanese population, 37 SNPs presented a significant association with MIH in the following genes: AMTN, MMP-20, STIM1, STIM2, ORAI1, SLC34A2, SLC34A3, VDR, PVALB, HSP90B1, TRPM7, SLC24A4, CA6, SLC4A2, TNFRSF11A, IL10RB, ARNT, ESR1 and CYP1B1. CONCLUSION This is the first WES study conducted in patients with MIH. Yet, interactions between polymorphisms in different gene categories are to be investigated for a better assessment of MIH susceptibility.
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Affiliation(s)
- R Elzein
- Department of Pediatric Dentistry and Public Dental Health, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon. .,Medical Genetics Unit, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon.
| | - F Abdel-Sater
- Laboratory of Cancer Biology and Cellular Immunology, Department of Biological Sciences, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - C Mehawej
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - N Jalkh
- Medical Genetics Unit, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - F Ayoub
- Department of Forensic Odontology, Human Identification and Anthropology, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | - E Chouery
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
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17
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Polymorphisms in genes expressed during amelogenesis and their association with dental caries: a case–control study. Clin Oral Investig 2022; 27:1681-1695. [PMID: 36422720 PMCID: PMC10102052 DOI: 10.1007/s00784-022-04794-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/13/2022] [Indexed: 11/25/2022]
Abstract
Abstract
Objectives
Dental caries is a widespread multifactorial disease, caused by the demineralization of hard dental tissues. Susceptibility to dental caries is partially genetically conditioned; this study was aimed at finding an association of selected single nucleotide polymorphisms (SNPs) in genes encoding proteins involved in amelogenesis with this disease in children.
Materials and methods
In this case–control study, 15 SNPs in ALOX15, AMBN, AMELX, KLK4, TFIP11, and TUFT1 genes were analyzed in 150 children with primary dentition and 611 children with permanent teeth with/without dental caries from the European Longitudinal Study of Pregnancy and Childhood (ELSPAC) cohort.
Results
Dental caries in primary dentition was associated with SNPs in AMELX (rs17878486) and KLK4 (rs198968, rs2242670), and dental caries in permanent dentition with SNPs in AMELX (rs17878486) and KLK4 (rs2235091, rs2242670, rs2978642), (p ≤ 0.05). No significant differences between cases and controls were observed in the allele or genotype frequencies of any of the selected SNPs in ALOX15, AMBN, TFIP11, and TUFT1 genes (p > 0.05). Some KLK4 haplotypes were associated with dental caries in permanent dentition (p ≤ 0.05).
Conclusions
Based on this study, we found that although the SNPs in AMELX and KLK4 are localized in intronic regions and their functional significance has not yet been determined, they are associated with susceptibility to dental caries in children.
Clinical relevance
AMELX and KLK4 variants could be considered in the risk assessment of dental caries, especially in permanent dentition, in the European Caucasian population.
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Garot E, Rouas P, Somani C, Taylor GD, Wong F, Lygidakis NA. An update of the aetiological factors involved in molar incisor hypomineralisation (MIH): a systematic review and meta-analysis. Eur Arch Paediatr Dent 2022; 23:23-38. [PMID: 34164793 DOI: 10.1007/s40368-021-00646-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/02/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE To systematically review the aetiological factors associated with molar incisor hypomineralisation (MIH). To this day, the aetiology remains unknown. Determining risk factors would allow risk assessment and enhance early diagnosis of MIH in young patients. The aim was to assess, evaluate and summarise the relationship between MIH and reported aetiological hypotheses. METHODS Electronic database searches of MEDLINE, EMBASE, EBSCO, LILACS and Cochrane Library were conducted. Authors conformed to PRISMA guidelines. Studies were screened, data extracted, assessment of risk of bias and calibration was completed by two independent reviewers. Meta-analyses with heterogeneity calculations were performed. RESULTS Of the potential 8949 studies, 64 studies were included in the qualitative analysis whilst 45 were included in the quantitative analysis. Prenatal factors: results are inconclusive as only unspecified maternal illnesses appear to be linked to MIH. Perinatal factors: prematurity (OR 1.45; 95% CI 1.24-1.70; p = 0.0002) and caesarean delivery (OR 1.45; 95% CI 1.09, 1.93; p < 0.00001) are associated with an increased risk of developing MIH. Birth complications are also highlighted. These three factors can lead to hypoxia, and children with perinatal hypoxia are more likely to develop MIH (OR 2.76; 95% CI 2.09-3.64; p < 0.0001). Postnatal factors: measles, urinary tract infection, otitis media, gastric disorders, bronchitis, kidney diseases, pneumonia and asthma are associated with MIH. Fever and antibiotic use, which may be considered as consequences of childhood illnesses, are also associated with MIH. Genetic factors: an increasing number of studies highlight the genetic and epigenetic influences in the development of MIH. CONCLUSION Several systemic and genetic and/or epigenetic factors acting synergistically or additively are associated with MIH, revealing a multifactorial aetiology model. Peri- and postnatal aetiological factors are more likely to increase the odds of causing MIH than prenatal factors.
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Affiliation(s)
- E Garot
- Université de Bordeaux, UFR Des Sciences Odontologiques, Bordeaux, France. .,CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France. .,Université de Bordeaux, PACEA, UMR 5199, Pessac, France.
| | - P Rouas
- Université de Bordeaux, UFR Des Sciences Odontologiques, Bordeaux, France.,CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France.,Université de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - C Somani
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - G D Taylor
- School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - F Wong
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - N A Lygidakis
- Private Paediatric Dental Clinic, 2 Papadiamantopoulou Street, 11528, Athens, Greece
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Bussaneli DG, Vieira AR, Santos-Pinto L, Restrepo M. Molar-incisor hypomineralisation: an updated view for aetiology 20 years later. Eur Arch Paediatr Dent 2022; 23:193-198. [PMID: 34392496 DOI: 10.1007/s40368-021-00659-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/11/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND The term Molar-Incisor Hypomineralisation (MIH) was introduced in 2001 by Weerheijm, Jälevik and Alaluusua, and describes a defect of systemic origin that affects one to four first permanent molars, often associated with permanent incisors. In the past 20 years, this definition dictated the work regarding MIH prevalence, associated risk factors, association with dental caries, impact on quality of life, and therapeutic options. PURPOSE In this report, we offer an updated and comprehensive view of MIH centred on the patient and the tooth. CONCLUSION MIH today is globally recognized as a potential public health problem and it is not a defect of purely systemic origin but rather a condition with complex aetiology that in some instances may be the result of gene-environmental interactions.
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Affiliation(s)
- D G Bussaneli
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University (Unesp), Araraquara School of Dentistry, Araraquara, São Paulo, Brazil
| | - A R Vieira
- Department of Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - L Santos-Pinto
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, São Paulo State University (Unesp), Araraquara School of Dentistry, Araraquara, São Paulo, Brazil
| | - M Restrepo
- Basic and Clinical Research Group in Dentistry, School of Dentistry, CES University, Medellín, Colombia.
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da Costa Rosa T, Pintor AVB, Magno MB, Marañón-Vásquez GA, Maia LC, Neves AA. Worldwide trends on molar incisor and deciduous molar hypomineralisation research: a bibliometric analysis over a 19-year period. Eur Arch Paediatr Dent 2022; 23:133-146. [PMID: 34674159 DOI: 10.1007/s40368-021-00676-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 10/12/2021] [Indexed: 12/16/2022]
Abstract
AIM To identify the worldwide trends in scientific evidence and gaps in knowledge regarding molar incisor hypomineralisation (MIH) and deciduous molar hypomineralisation/hypomineralised second primary molars (DMH/HSPM), exploring the contribution of authors and countries, possible etiological factors and proposed treatments, in order to guide future research in the area. METHODS Searches were conducted in MEDLINE, Scopus, Web of Science, Cochrane Library, Lilacs/BBO, Embase and Google Scholar. Studies employing the terms MIH, DMH/HSPM and their linguistic variations were included. The following data were extracted: title, authors, year and journal of publication and first author's affiliation country. Studies were categorized according to topic, dentition, study design, etiological factors and types of treatments. Categories were analysed in relation to their distribution, co-occurrence, cross-correlation and/or autocorrelation. RESULTS Five hundred and three studies were included. The most published authors were Manton D (n = 47), de Souza JF (n = 22) and Ghanim A (n = 22) and four main collaboration clusters have been identified. Most of the studies were conducted on permanent dentition (MIH) (87.4%); with observational design (57.2%). The "European Archives of Paediatric Dentistry" was the most published journal (13.3%) and a significant increase in the number of publications was observed in the last decade. MIH was most studied in relation to prevalence/incidence, systemic factors involved in its aetiology and treatment with composite restorations, while a gap in knowledge was observed for extraction and sealants. Less studies were published on DMH/HSPM and most of them evaluated risk factors or prevalence/incidence. The gap of knowledge was observed in relation to treatments and patient's quality of life. CONCLUSIONS This bibliometric review provided a comprehensive overview of research in MIH and DMH/HSPM over the past 19 years. Within the limitations of the present study, the following conclusions can be drawn: global trends point to an increasing peak of scientific publication, especially in the last decade, while there is a shortage of clinical studies on treatments, mainly evaluating tooth extractions. Finally the multifactorial nature should be further explored, considering environmental and systemic factors together.
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Affiliation(s)
- T da Costa Rosa
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil
| | - A V B Pintor
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil
| | - M B Magno
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil
| | - G A Marañón-Vásquez
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil
| | - L C Maia
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil
| | - A A Neves
- Department of Pediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal Do Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco, 325-Cidade Universitária, Rio de Janeiro, RJ, CEP: 21941-971, Brazil.
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Lygidakis NA, Garot E, Somani C, Taylor GD, Rouas P, Wong FSL. Best clinical practice guidance for clinicians dealing with children presenting with molar-incisor-hypomineralisation (MIH): an updated European Academy of Paediatric Dentistry policy document. Eur Arch Paediatr Dent 2022; 23:3-21. [PMID: 34669177 PMCID: PMC8926988 DOI: 10.1007/s40368-021-00668-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 42.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022]
Abstract
AIM To update the existing European Academy of Paediatric Dentistry (EAPD) 2010 policy document on the 'Best Clinical Practice guidance for clinicians dealing with children presenting with Molar-Incisor-Hypomineralisation (MIH).' METHODS Experts, assigned the EAPD, worked on two different topics: (A) Aetiological factors involved in MIH, and (B) Treatment options for the clinical management of MIH. The group prepared two detailed systematic reviews of the existing literature relevant to the topics and following a consensus process produced the updated EAPD policy document on the 'Best Clinical Practice guidance for clinicians dealing with children presenting with molar-incisor-hypomineralisation (MIH).' The GRADE system was used to assess the quality of evidence regarding aetiology and treatment which was judged as HIGH, MODERATE, LOW or VERY LOW, while the GRADE criteria were used to indicate the strength of recommendation regarding treatment options as STRONG or WEAK/CONDITIONAL. RESULTS (A) Regarding aetiology, it is confirmed that MIH has a multifactorial aetiology with the duration, strength and timing of occurrence of the aetiological factors being responsible for the variable clinical characteristics of the defect. Perinatal hypoxia, prematurity and other hypoxia related perinatal problems, including caesarean section, appear to increase the risk of having MIH, while certain infant and childhood illnesses are also linked with MIH. In addition, genetic predisposition and the role of epigenetic influences are becoming clearer following twin studies and genome and single-nucleotide polymorphisms analyses in patients and families. Missing genetic information might be the final key to truly understand MIH aetiology. (B) Regarding treatment options, composite restorations, preformed metal crowns and laboratory indirect restorations provide high success rates for the posterior teeth in appropriate cases, while scheduled extractions provide an established alternative option in severe cases. There is great need for further clinical and laboratory studies evaluating new materials and non-invasive/micro-invasive techniques for anterior teeth, especially when aesthetic and oral health related quality of life (OHRQoL) issues are concerned. CONCLUSIONS MIH has been studied more extensively in the last decade. Its aetiology follows the multifactorial model, involving systemic medical and genetic factors. Further focused laboratory research and prospective clinical studies are needed to elucidate any additional factors and refine the model. Successful preventive and treatment options have been studied and established. The appropriate choice depends on the severity of the defects and the age of the patient. EAPD encourages the use of all available treatment options, whilst in severe cases, scheduled extractions should be considered.
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Affiliation(s)
- N A Lygidakis
- Private Paediatric Dental Clinic, 2 Papadiamantopoulou Street, 11528, Athens, Greece.
| | - E Garot
- Univ. de Bordeaux, UFR des Sciences Odontologiques, Bordeaux, France
- CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France
- Univ. de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - C Somani
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - G D Taylor
- School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - P Rouas
- Univ. de Bordeaux, UFR des Sciences Odontologiques, Bordeaux, France
- CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France
- Univ. de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - F S L Wong
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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Effects of antibiotics on the developing enamel in neonatal mice. Eur Arch Paediatr Dent 2022; 23:159-168. [PMID: 34716571 PMCID: PMC8926962 DOI: 10.1007/s40368-021-00677-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/19/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE Identifying factors causing Molar-Incisor Hypomineralization (MIH) is an ongoing challenge. Preterm infants, routinely treated with antibiotics in cases of suspected sepsis, are more commonly affected by dental developmental defects. This study aimed to investigate the effects of gentamycin and ampicillin on the developing enamel in neonatal CD-1 mice in vivo. METHODS Neonatal mice were randomized into a study (n = 36) and a control (n = 35) group. Antibiotics were injected intravenously for 4 days. All mice were sacrificed after 15-18 days. Micro-CT was used to analyse the mineral density (MD) of the enamel and the proportion of the enamel object volume (vol%) in first molars and incisors. RESULTS We demonstrated a significantly lower vol% enamel in the maxillary (30.9% vs. 32.7%; p = 0.004) and mandibular (32.5% vs. 34.6%; p = 0.015) molars in the study group than in the controls. The incisors were divided into segments upon analysis. We demonstrated both lower vol% and lower MD of the enamel in most segments in treated individuals compared to controls (p < 0.05). CONCLUSION The reduced MD and vol% in the molars and incisors are likely to have been caused by the antibiotics given during tooth development. The presented analysis of teeth in neonatal mice with micro-CT could be a valid model for further research on dental developmental defects.
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Elzein R, Chouery E, Abdel-Sater F, Bacho R, Ayoub F. Relation between molar-incisor hypomineralization (MIH) occurrence and war pollutants in bombarded regions: Epidemiological pilot study in Lebanon. Niger J Clin Pract 2021; 24:1808-1813. [PMID: 34889789 DOI: 10.4103/njcp.njcp_702_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Molar-incisor hypomineralization (MIH), a developmental enamel defect affecting one or more first permanent molars (FPMs) and sometimes incisors (PIs), is one of the most common pandemic health problems in the world. MIH etiology is still unclear and has been suggested to be related to exposure to environmental toxicants during enamel mineralization. Aims To assess the susceptibility to MIH occurrence in regards to war pollutants through the investigation of the prevalence and the clinical characteristics of MIH in a group of Lebanese children whose FPMs and PIs enamel mineralization coincides with the 2006 Lebanese war. Patients and Methods This cross-sectional study was performed in schools from different regions of Lebanon. Schoolchildren born in 2004, 2005, 2006, and 2007 were examined for MIH. Clinical status, lesion type, extension, and severity were recorded using the short form chart of the MIH index. Pearson's Chi-square or Fischer's exact test were used to determine if there is a significant relationship between categorical variables. Results An overall MIH prevalence of 22.93% has been reported. Forty-seven point seventy-five per cent had both molars and incisors affected. Demarcated opacities were the most frequently observed clinical status. Most of the MIH FPMs and PIs were mildly affected with lesions extended on less than the third of the tooth surface. Conclusions MIH prevalence among children born around 2006 Lebanese war is high. The hypothesis of a relation between MIH susceptibility and war pollutants in bombarded regions is legible but requires to be elucidated via additional in vitro and in vivo studies for accurate risk assessment.
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Affiliation(s)
- R Elzein
- Department of Pediatric Dentistry and Public Dental Health, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | - E Chouery
- Medical Genetics Unit, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - F Abdel-Sater
- Department of Biological Sciences, Laboratory of Cancer Biology and Cellular Immunology, Faculty of Sciences, Beirut, Lebanon
| | - R Bacho
- Department of Pediatric Dentistry and Public Dental Health, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | - F Ayoub
- Department of Forensic Odontology, Human Identification and Anthropology, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
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Sezer B, Çarıkçıoğlu B, Kargül B. Dental age and tooth development in children with molar-incisor hypomineralization: A case-control study. Arch Oral Biol 2021; 134:105325. [PMID: 34871891 DOI: 10.1016/j.archoralbio.2021.105325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/25/2022]
Abstract
OBJECTIVE The aim of the study was to determine the dental age for the evaluation of tooth development in children with molar-incisor hypomineralization (MIH) by using the Willems method, Cameriere-European formula, and London Atlas. DESIGN Panoramic radiographs of 308 children between the ages of 6-13 diagnosed with MIH and the same number of sex- and age-matched children without MIH were evaluated by two different examiners using the Willems method, Cameriere-European formula, and London Atlas. The mean difference between chronological age and dental age in both groups was calculated for each sex and age. The mean absolute error was used to determine the accuracies of the Willems method, Cameriere-European formula, and London Atlas. RESULTS There was a statistically significant difference found only in Willems method in dental age estimation between the groups with and without MIH (P = 0.001). In the evaluation performed with Cameriere-European formula and London Atlas, which are more accurate methods for dental age estimation in both groups, no statistically significant difference was found in dental age estimation between the two groups (P = 0.322, P = 0.290, respectively). There was a statistically significant intense linear correlation for three methods in both groups (P < 0.001). CONCLUSIONS MIH, which is a developmental enamel defect, does not affect dental age and tooth development since there was no significant difference between groups with and without MIH according to the evaluations made with accurate dental age estimation methods.
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Affiliation(s)
- Berkant Sezer
- Department of Pediatric Dentistry, School of Dentistry, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.
| | - Burak Çarıkçıoğlu
- Department of Pediatric Dentistry, School of Dentistry, Çanakkale Onsekiz Mart University, Çanakkale, Turkey.
| | - Betül Kargül
- Department of Pediatric Dentistry, School of Dentistry, Marmara University, Istanbul, Turkey.
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Thampan N, Ramya R, Swarnalakshmi R, Rajkumar K, Savithri S, Divyalakshmi G. Analysis of ENAM gene single-nucleotide polymorphism rs3796704 with caries susceptibility in young adult Tamil population. J Oral Maxillofac Pathol 2021; 25:226-231. [PMID: 34703114 PMCID: PMC8491349 DOI: 10.4103/0973-029x.325119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Dental caries is as primeval as humanity, but still, investigations are undergoing regarding the etiopathogenesis behind this multifactorial disease. Genetics is known to play a vital role in the etiology behind dental caries in addition to environmental and socioeconomic factors. Genetic variations like single-nucleotide polymorphisms (SNPs) were extensively studied in the past decade to portray the etiopathogenesis contributing to dental caries. Aim: This investigation was undertaken to analyze the ENAM gene SNP rs3796704 with caries susceptibility in ethnic young adult Tamil population of India. Materials and Methods: Out of 370 patients included, 215 patients belonged to the high caries group (Decayed, Missing and Filled Tooth [DMFT] ≥2) and 155 patients belonged to the low caries group (DMFT ≤ 1). DNA was extracted from the blood of all the individuals. SNP genotyping was performed utilizing tetra-primer amplification refractory mutation system–polymerase chain reaction with specific primers. Results: The genotyping results showed that there were no differences in allelic (P = 0.114) and genotypic frequencies (P = 0.159) between the high caries and low caries groups. Conclusion: Future studies can be conducted in larger samples and different ethnicities around the globe to analyze the role played by SNPs of enamel formation genes in cariogenesis.
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Affiliation(s)
- Niveditha Thampan
- Department of Oral and Maxillofacial Pathology, SRM Dental College, Chennai, Tamil Nadu, India
| | - R Ramya
- Department of Oral and Maxillofacial Pathology, Saveetha Dental College, Chennai, Tamil Nadu, India
| | - R Swarnalakshmi
- Department of Stomatognathic Function and Occlusal Reconstruction, Tokushima University, Tokushima, Japan
| | - K Rajkumar
- Department of Oral and Maxillofacial Pathology, SRM Dental College, Chennai, Tamil Nadu, India
| | - S Savithri
- Department of Microbiology, SRM Dental College, Chennai, Tamil Nadu, India
| | - G Divyalakshmi
- Department of Oral and Maxillofacial Pathology, SRM Dental College, Chennai, Tamil Nadu, India
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Bekes K, Melichar K, Stamm T, Elhennawy K. Dental Students' Knowledge, Attitudes and Beliefs Regarding Molar Incisor Hypomineralization (MIH): A Survey in Vienna, Austria. J Multidiscip Healthc 2021; 14:2881-2889. [PMID: 34675536 PMCID: PMC8520889 DOI: 10.2147/jmdh.s326846] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 08/31/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Molar incisor hypomineralization (MIH) is a frequently encountered dental condition worldwide. The aim of this study was to evaluate the knowledge of Austrian dental students about MIH. Methods A validated paper-based survey was distributed among 100 final year dental students at the Medical University of Vienna to assess their knowledge, perception and believes regarding MIH. One hundred dental students at the University Dental Clinic of Vienna were included in the study. At the time of the survey, they were in their 11th or 12th semester (final year). Information about the knowledge on diagnosis and prevalence, and attitudes and beliefs around etiology and management was collected. Results All students replied, 94 questionnaires could be included in the analysis (50% female). 98% of the students were familiar with MIH and 86% were aware with the clinical features of MIH. Only 13% reported clinical ability to identify MIH. Regarding the etiology of MIH, most of the students (69%) named "genetic factors" as the most frequent etiological factor. Conclusion Dental students showed great interest in the topic of MIH, as the majority of all respondents were in favor of deepening their knowledge regarding this topic. The students should be offered opportunities to do this both during and after their studies.
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Affiliation(s)
- Katrin Bekes
- Department of Paediatric Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Kaya Melichar
- Department of Paediatric Dentistry, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Tanja Stamm
- Center for Medical Statistics, Informatics, and Intelligent Systems, Medical University of Vienna, Section for Outcomes Research, Vienna, Austria
| | - Karim Elhennawy
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité - Universitätsmedizin Berlin, Berlin, Germany
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Sabharwal A, Stellrecht E, Scannapieco FA. Associations between dental caries and systemic diseases: a scoping review. BMC Oral Health 2021; 21:472. [PMID: 34563194 PMCID: PMC8466895 DOI: 10.1186/s12903-021-01803-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 09/01/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The objective of this study was to evaluate and present evidence from animal and human clinical studies on associations between dental caries and systemic diseases, and to suggest potential mechanisms that might explain such associations. METHODS An electronic search was conducted of PubMed, Embase and Cochrane Central Register of Controlled Trials for articles published from 2010 to 2020 in the English language. From the initial search, 404 full-text studies were assessed for eligibility. After excluding studies for technical and study limitations, a total of 67 studies were included in the summary tables and additional studies were included in the review to support evidence. RESULTS Few systemic disease and conditions were found to be clinically meaningfully associated with caries experience. Best evidence from human and animal studies described association between metabolic diseases and dental caries. Several interesting animal studies were noted that could generate clinical hypotheses and further investigations in rodent models for cardiovascular injury and hyperglycemia. Inadequate data was found to suggest any modifications to current clinical practice or prevention guidelines. CONCLUSIONS Limited clinical evidence was found connecting several systemic diseases and dental caries. Inadequate data was found to suggest any modifications to current clinical practice or prevention guidelines. CLINICAL SIGNIFICANCE Understanding of associations between dental caries and systemic diseases play a crucial role in the treatment planning and education of the dental patient.
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Affiliation(s)
- Amarpreet Sabharwal
- Division of Periodontics, Schulich School of Medicine and Dentistry, DSB 0156A, Western University, 1151 Richmond St., London, ON N6A 5C1 Canada
- Department of Periodontics and Endodontics, School of Dental Medicine, University at Buffalo, 3435 Main St., Buffalo, NY 14214 USA
| | - Elizabeth Stellrecht
- Health Sciences Library University at Buffalo, 3435 Main St., Buffalo, NY 14214 USA
| | - Frank A. Scannapieco
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, 3435 Main St, Buffalo, NY 14214 USA
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Knowledge, experience and perception regarding molar incisor hypomineralisation (MIH) among dentists and dental hygienists in Oslo, Norway. Eur Arch Paediatr Dent 2021; 22:851-860. [PMID: 34386932 PMCID: PMC8526464 DOI: 10.1007/s40368-021-00649-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 06/29/2021] [Indexed: 01/05/2023]
Abstract
Aim The aim of this study is to gather baseline information on knowledge, perceptions, clinical experience and treatment options regarding MIH among dental care providers in Oslo, Norway, before a larger epidemiological study. Methods An electronic questionnaire was distributed to dentists (n = 88) and dental hygienists (n = 47) working in the Public Dental Service (PDS) in Oslo. The questionnaire consisted of five sections related to sociodemographic, clinical experience, perceptions, clinical management and preferences for further training. Descriptive statistics with chi-squared test was used, and level of statistical significance was set to 5%. Results Replies were obtained from 74.1% (n = 100) after two reminders. All respondents encountered MIH in their practice. The respondents’ perception of the prevalence of MIH in Oslo varied. The majority felt confident when diagnosing MIH (86%). The clinicians qualified in the last 10 years felt more confident than those who had qualified earlier (p = 0.016). Most were self-confident when treating these patients (68.3%), however, nearly all (88%) agreed that MIH was a clinical problem. The clinician’s treatment of MIH varied. Difficulties achieving adequate local anaesthetic (71.4%) and the child’s behavioural problems (84.1%) were treatment barriers for the dentists. Approximately two thirds (69%) would like further training, in particular on the aetiology (70%), diagnosis (57%) and treatment (77%) of the developmental disorder. Conclusion All clinicians were familiar with the diagnosis of MIH and experienced the condition to be a clinical problem. Continuing education on aetiology, diagnosis and treatment of MIH is requested by dental health personnel.
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Genetic Aspects of Dental Erosive Wear and Dental Caries. Int J Dent 2021; 2021:5566733. [PMID: 34335772 PMCID: PMC8292068 DOI: 10.1155/2021/5566733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 07/01/2021] [Indexed: 11/17/2022] Open
Abstract
Objectives The present review aims to give an overview of the literature focusing on novel genetic aspects of dental erosion and dental caries. Once the tooth erupts into the oral cavity, the regenerative capability of enamel is fundamentally limited due to the loss of dental epithelium during eruption. The susceptibility or resistance to dental erosion and caries is presumably a result of environmental, phenotypic, and/or genetic influence. Even though it is evident that individuals frequently exposing their teeth to acid and sugar are at high risk of developing dental erosion and caries, the findings exclusively based on these factors are elusive. Data resources and study selection. The present review was based on data collected from the National Library of Medicine database with different combinations of the following terms: "tooth," "dental," "dentin," "enamel," "erosion," "erosive wear," "caries," "decay," "gene," and "genetic." A total of forty-six studies met the inclusion criteria. Data were extracted by one reviewer and verified by another. Conclusion The high prevalence of erosion and caries among certain groups, and observations that not all individuals appearing to be at risk develop these lesions, has sparked research on identifying genetic effects to these conditions. A connection of genome-wide and candidate gene studies has increased considerably in the literature. This review reveals largely varying success among studies, demonstrating the difficulties of developing the study with adequate sample sizes and durable phenotype definitions that permit enough statistical power to identify genetic contributors.
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Elhennawy K, Anang M, Splieth C, Bekes K, Manton DJ, Hedar Z, Krois J, Jost-Brinkmann PG, Schwendicke F. Knowledge, attitudes, and beliefs regarding molar incisor hypomineralization (MIH) amongst German dental students. Int J Paediatr Dent 2021; 31:486-495. [PMID: 32813919 DOI: 10.1111/ipd.12715] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/30/2020] [Accepted: 07/20/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Knowledge of molar incisor hypomineralization (MIH) has relevance for paediatric dentists. AIM To assess final-year German dental students' knowledge, attitudes, and beliefs regarding MIH. MATERIALS AND METHODS A previously validated questionnaire was posted to the 31 German dental schools. Demographic covariates as well as knowledge regarding diagnosis and prevalence, and attitudes and beliefs around aetiology and management were collected. RESULTS Twenty-two (71%) dental schools responded and a total of 877 students participated. Most (97%) were familiar with MIH and 88% were aware of the diagnostic criteria for MIH; however, only 42% knew how to implement them. One-third were able to identify MIH and 16% reported diagnostic confidence when doing so; 90% assumed the MIH prevalence to be <10%. Two-thirds of the respondents implicated genetic components as the main aetiological factor of MIH. Resin composite (60%) and preformed metal crowns (46%) were the dental materials most often suggested for restorative management. Almost all (98%) respondents were interested in receiving more clinical training. CONCLUSION German students were familiar with MIH; however, they reported low levels of knowledge and confidence regarding its prevalence and diagnosis. Standardized nationwide, up-to-date curricula should be implemented to educate future dentists in Germany.
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Affiliation(s)
- Karim Elhennawy
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité - Universitätsmedizin Berlin, corporate memberof Freie Universität Berlin, Humboldt-Universität, and BerlinInstitute of Health, Aßmannshauser Str. 4-6, Berlin, 14197, Germany
| | - Mostafa Anang
- Department of Preventive and Paediatric Dentistry, University of Greifswald, Greifswald, Germany
| | - Christian Splieth
- Department of Preventive and Paediatric Dentistry, University of Greifswald, Greifswald, Germany
| | - Katrin Bekes
- Department of Paediatric Dentistry, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - David John Manton
- Paediatric Dentistry and Cariology, Centrum voor Tandheelkunde en Mondzorgkunde, UMCG, A. Deusinglaan 1, Groningen, 9700 AD, The Netherlands
| | - Zen Hedar
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité - Universitätsmedizin Berlin, corporate memberof Freie Universität Berlin, Humboldt-Universität, and BerlinInstitute of Health, Aßmannshauser Str. 4-6, Berlin, 14197, Germany
| | - Joachim Krois
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, corporate memberof Freie Universität Berlin, Humboldt-Universität, and BerlinInstitute of Health, Aßmannshauser Str. 4-6, Berlin, 14197, Germany
| | - Paul-Georg Jost-Brinkmann
- Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Charité - Universitätsmedizin Berlin, corporate memberof Freie Universität Berlin, Humboldt-Universität, and BerlinInstitute of Health, Aßmannshauser Str. 4-6, Berlin, 14197, Germany
| | - Falk Schwendicke
- Department of Operative and Preventive Dentistry, Charité - Universitätsmedizin Berlin, corporate memberof Freie Universität Berlin, Humboldt-Universität, and BerlinInstitute of Health, Aßmannshauser Str. 4-6, Berlin, 14197, Germany
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Mohamed RN, Basha S, Al-Thomali Y, Al Zahrani FS, Ashour AA, Al Shamrani AS, Almutair NE. Frequency of molar incisor hypomineralization and associated factors among children with special health care needs. Ann Saudi Med 2021; 41:238-245. [PMID: 34420400 PMCID: PMC8380275 DOI: 10.5144/0256-4947.2021.238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Molar incisor hypomineralization (MIH) is a frequently encountered oral condition that varies from mild opacities to posteruptive enamel breakdown. No previous published studies have investigated the frequency of MIH and associated risk factors among children with special health care needs (CSHCN) to our awareness. OBJECTIVES Assess the frequency of MIH and associated risk factors among CSHCN. DESIGN Cross-sectional. SETTING Schools in provincial city of Saudi Arabia. PATIENTS AND METHODS The study was conducted among 400 (180 boys and 220 girls) special needs children. Diagnosis of MIH was according to the European Academy of Paediatric Dentistry criteria. MAIN OUTCOME MEASURE Result of logistic regression analysis that assessed the association between MIH prevalence and associated prenatal, perinatal, and postnatal factors. SAMPLE SIZE 400 (180 boys and 220 girls) special needs children. RESULTS Among 400 CSHCN, 98 (24.5%) presented with MIH. Children with multiple disabilities had a 3.89 times greater risk of MIH (95% CI: 1.91-6.19, P=.002). Children with positive prenatal factors had an adjusted odds ratio (aOR) of 2.31 times for MIH (95% CI: 1.22-4.73, P=.012). Children with a childhood infection history had an aOR of 2.43 times for MIH (95% CI: 1.31-5.85, P=.014). Children with a breastfeeding history >18 months had an aOR of 3.73 for MIH (95% CI: 1.62-8.60, P=.002). Permanent maxillary first molars were the most frequently affected teeth, and demarcated opacity was the most frequent MIH type. CONCLUSION MIH should be recognized as one of the prevalent oral health problems among CSHCN to prevent tooth mortality. LIMITATIONS A cross-sectional study cannot establish a causal relationship. CONFLICTS OF INTEREST None.
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Affiliation(s)
| | - Sakeenabi Basha
- From the Faculty of Dentistry, Taif University, Taif, Saudi Arabia
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32
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Butera A, Maiorani C, Morandini A, Simonini M, Morittu S, Barbieri S, Bruni A, Sinesi A, Ricci M, Trombini J, Aina E, Piloni D, Fusaro B, Colnaghi A, Pepe E, Cimarossa R, Scribante A. Assessment of Genetical, Pre, Peri and Post Natal Risk Factors of Deciduous Molar Hypomineralization (DMH), Hypomineralized Second Primary Molar (HSPM) and Molar Incisor Hypomineralization (MIH): A Narrative Review. CHILDREN-BASEL 2021; 8:children8060432. [PMID: 34064138 PMCID: PMC8224286 DOI: 10.3390/children8060432] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022]
Abstract
Objectives: Analyze defects in the state of maturation of the enamel result in an adequate volume of enamel, but in an insufficient mineralization, which can affect both deciduous teeth and permanent teeth. Among the most common defects, we recognize Deciduous Molar Hypominerlization (DMH), Hypomineralized Second Primary Molar (HSPM), and Molar Incisor Hypomineralization (MIH). These, in fact, affect the first deciduous molars, the second deciduous molars and molars, and permanent incisors, respectively, but their etiology remains unclear. The objective of the paper is to review studies that focus on investigating possible associations between genetic factors or prenatal, perinatal, and postnatal causes and these enamel defects. Materials and methods: A comprehensive and bibliometric search for publications until January 2021 was conducted. The research question was formulated following the Population, Intervention, Comparison, Outcome strategy. Case-control, cross-sectional, cohort studies, and clinical trials investigating genetic and environmental etiological factors of enamel defects were included. Results: Twenty-five articles are included. For genetic factors, there is a statistical relevance for SNPs expressed in the secretion or maturation stage of amelogenesis (16% of studies and 80% of studies that investigated these factors). For prenatal, perinatal, and postnatal causes, there is a statistical relevance for postnatal factors, such as the breastfeeding period (2%), asthma (16%), high fever episodes (20%), infections/illnesses (20%), chickenpox (12%), antibiotic intake (8%), diarrhea (4%), and pneumonia (4%). Conclusions: The results are in agreement with the multifactorial idea of the dental enamel defects etiology, but to prove this, further studies enrolling larger, well-diagnosed, and different ethnic populations are necessary to expand the investigation of the genetic and environmental factors that might influence the occurrence of DMH, HPSM, and MIH.
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Affiliation(s)
- Andrea Butera
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
- Correspondence:
| | - Carolina Maiorani
- Unit of Dental Hygiene, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
| | - Annalaura Morandini
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Manuela Simonini
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Stefania Morittu
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Stefania Barbieri
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Ambra Bruni
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Antonia Sinesi
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Maria Ricci
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Julia Trombini
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Elisa Aina
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Daniela Piloni
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Barbara Fusaro
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Arianna Colnaghi
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Elisa Pepe
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Roberta Cimarossa
- Member Association: “ Mamme & Igieniste”, 24125 Bergamo, Italy; (A.M.); (M.S.); (S.M.); (S.B.); (A.B.); (A.S.); (M.R.); (J.T.); (E.A.); (D.P.); (B.F.); (A.C.); (E.P.); (R.C.)
| | - Andrea Scribante
- Unit of Orthodontics and Pediatric Dentistry, Section of Dentistry, Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy;
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Almulhim B. Molar and Incisor Hypomineralization. JNMA J Nepal Med Assoc 2021; 59:295-302. [PMID: 34506432 PMCID: PMC8369532 DOI: 10.31729/jnma.6343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Indexed: 11/09/2022] Open
Abstract
Molar and incisor hypomineralization is a developmental defect that is systemic in origin that affects one or more than one permanent first molars, and is often associated with permanent incisors. It is usually characterized by well demarcated opacities and qualitative enamel defects caused by decreased inorganic enamel components, and reduced mineralization. It can cause esthetic, functional, psychological, and behavioral problems in children. Its reported prevalence varies widely, from 2.5% to 40.2%. Multiple aspects of dental treatment for it are challenging, such as behavior management, difficulty in achieving adequate local anesthesia, tooth hypersensitivity, and retention of restorations. This review discusses the most important considerations pertaining to its prevalence, severity, etiology, differential diagnosis, and some of the challenges and treatment modalities applicable in young patients. Data is collected from PubMed, Medline, and Embase databases.
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Affiliation(s)
- Basim Almulhim
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al-Majmaah, 11952, Saudi Arabia
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Jeremias F, Bussaneli DG, Restrepo M, Pierri RAG, Souza JFD, Fragelli CMB, Secolin R, Maurer-Morelli CV, Cordeiro RDCL, Scarel-Caminaga RM, Santos-Pinto L. Inheritance pattern of molar-incisor hypomineralization. Braz Oral Res 2021; 35:e035. [PMID: 33759971 DOI: 10.1590/1807-3107bor-2021.vol35.0035] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 09/21/2020] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to investigate the segregation patterns of molar incisor hypomineralization (MIH) in families, given the evidence that its etiology is influenced by genetics. Clinically, MIH may be detected in parents and/or siblings of MIH-affected children. Our study included children with at least one first permanent molar affected by MIH (proband) and their first-degree relatives (parents and siblings). The participants were examined clinically to detect MIH, according to the European Academy of Paediatric Dentistry criteria (2003). A total of 101 nuclear families (391 individuals) were studied. Proband diagnosis was followed by MIH classification of the subject, his parents and siblings, as affected, unaffected, or unknown. Segregation analysis was performed using the multivariate logistic regression model of the Statistical Analysis for Genetic Epidemiology package, and segregation models (general transmission, environmental, major gene, dominant, codominant and recessive models). The Akaike information criterion (AIC) was used to evaluate the most parsimonious model. In all, 130 affected individuals, 165 unaffected individuals, and 96 unknown individuals were studied. Severe MIH was found in 50.7% of the cases. A segregation analysis performed for MIH revealed the following different models: environmental and dominance (p = 0.05), major gene (p = 0.04), codominant (p = 0.15) and recessive models (p = 0.03). According to the AIC values, the codominant model was the most parsimonious (AIC = 308.36). Our results suggest that the codominant model could be the most likely for inheriting MIH. This result strengthens the evidence that genetic factors, such as multifactorial complex defect, influence MIH.
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Affiliation(s)
- Fabiano Jeremias
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Diego Girotto Bussaneli
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Manuel Restrepo
- Universidade CES - Basic and Clinical Research Group in Dentistry, School of Dentistry, Medellín, Antioquia, Colombia
| | - Ricardo Augusto Gonçalves Pierri
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Juliana Feltrin de Souza
- Universidade Federal do Paraná - UFPR, School of Dentistry, Department of Stomatology, Curitiba, PR, Brazil
| | - Camila Maria Bullio Fragelli
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Rodrigo Secolin
- Universidade Estadual de Campinas - Unicamp, School of Medicine, Department of Medical Genetics and Genomic Medicine, Campinas, SP, Brazil
| | - Claudia Vianna Maurer-Morelli
- Universidade Estadual de Campinas - Unicamp, School of Medical Science, Department of Medical Genetics, Campinas, SP, Brazil
| | - Rita de Cassia Loiola Cordeiro
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Raquel Mantuaneli Scarel-Caminaga
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
| | - Lourdes Santos-Pinto
- Universidade Estadual Paulista - UNESP, school of Dentistry, Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry, Araraquara, SP, Brazil
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35
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Li X, Liu D, Sun Y, Yang J, Yu Y. Association of genetic variants in enamel-formation genes with dental caries: A meta- and gene-cluster analysis. Saudi J Biol Sci 2021; 28:1645-1653. [PMID: 33732050 PMCID: PMC7938150 DOI: 10.1016/j.sjbs.2020.11.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/22/2020] [Accepted: 11/21/2020] [Indexed: 11/30/2022] Open
Abstract
Previous studies have reported the association between multiple genetic variants in the enamel-formation genes and the risk of dental caries with inconsistent results. We performed a systematic literature search of the PubMed, Cochrane Library, HuGE and Google Scholar databases for studies published before March 21, 2020 and conducted meta-, gene-based and gene-cluster analysis on the association between genetic variants in the enamel-formation genes and the risk of dental caries. We identified 21 relevant publications including a total of 24 studies for analysis. The genetic variant rs17878486 in AMELX was significantly associated with dental caries risk (OR = 1.40, 95% CI: 1.02–1.93, P = 0.037). We found no significant association between the risk of dental caries with rs12640848 in ENAM (OR = 1.15, 95% CI: 0.88–1.52, P = 0.310), rs1784418 in MMP20 (OR = 1.07, 95% CI: 0.76–1.49, P = 0.702) and rs3796704 in ENAM (OR = 1.06, 95% CI: 0.96–1.17, P = 0.228). Gene-based analysis indicated that multiple genetic variants in AMELX showed joint association with the risk of dental caries (6 variants; P < 10−5), so did genetic variants in MMP13 (3 variants; P = 0.004), MMP2 (3 variants; P < 10−5), MMP20 (2 variants; P < 10−5) and MMP3 (2 variants; P < 10−5). The gene-cluster analysis indicated a significant association between the genetic variants in this enamel-formation gene cluster and the risk of dental caries (P < 10−5). The present meta-analysis revealed that genetic variant rs17878486 in AMELX was associated with dental caries, and multiple genetic variants in the enamel-formation genes jointly contributed to the risk of dental caries, supporting the role of genetic variants in the enamel-formation genes in the etiology of dental caries.
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Affiliation(s)
- Xueyan Li
- Department of Stomatology, Eye & Ent Hospital of Fudan University, Shanghai 200031, China
| | - Di Liu
- Beijing Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Yang Sun
- Department of Stomatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jingyun Yang
- Division of Statistics, School of Economics, Shanghai University, Shanghai 200444, China.,Research Center of Financial Information, Shanghai University, Shanghai 200444, China.,Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL 60612, USA.,Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA
| | - Youcheng Yu
- Department of Stomatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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36
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Molar Incisor Hypomineralization (MIH) in a Child with Congenital Chronic Intestinal Pseudoobstruction (CIPO). Case Rep Dent 2021; 2020:8894657. [PMID: 33457023 PMCID: PMC7787807 DOI: 10.1155/2020/8894657] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 11/26/2020] [Accepted: 12/10/2020] [Indexed: 11/18/2022] Open
Abstract
Molar incisor hypomineralization (MIH) is a qualitative enamel defect of systemic origin affecting 1-4 permanent first molars (PFMs) frequently in association with affected permanent incisors (PIs). The exact etiology of MIH is still unclear but considered to be multifactorial. This present case report to the best of our knowledge is the first case reported which acknowledges MIH in a patient with chronic intestinal pseudoobstruction (CIPO) with underlying neurological disease due to somatic mitochondrial disorder. It also elicits the availability of various contemporary treatment options and their proper selection and early intervention to manage the functional and aesthetic problems caused by enamel defects and to improve the quality of life in the patients.
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Abdalla HE, Abuaffan AH, Kemoli AM. Molar incisor hypomineralization, prevalence, pattern and distribution in Sudanese children. BMC Oral Health 2021; 21:9. [PMID: 33407385 PMCID: PMC7789559 DOI: 10.1186/s12903-020-01383-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 12/22/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Molar incisor hypomineralization (MIH) has serious impact on oral health-related quality of life for a child, due to its effects on tooth structure, aesthetics and behavior of the child. The current study was designed to determine the prevalence, pattern and distribution of MIH in school children in Sudan. METHODS This was a descriptive cross-sectional study involving 568 children, aged 8-11 years from schools in Khartoum State. Following the collection of their socio-demographic data, the children were examined for hypomineralization on the 12 MIH-index teeth, the pattern and distribution of the MIH. The data collected was analyzed to obtain descriptive statistics. The results related to the socio-demography and other dental-related factors were tested using chi-square test and Spearman Rank Correlation, with the significant level set at p < 0.05. RESULTS The prevalence of MIH in the study population was 20.1%. The majority of the participants had both permanent first molars (PFMs) and permanent incisors affected (12.5%). However, in 7.6% of the cases only molars were affected. Even though more maxillary teeth were affected when compared to the mandibular teeth, there was no statistical significant difference between the occurrence of hypomineralization on mandibular and maxillary molars (p = 0.22). Maxillary incisors were significantly more affected by MIH when related to the mandibular ones (p = 0.00). Demarcated opacities were the commonest pattern of MIH defects (69.9%) in the experimental group. CONCLUSION The prevalence of MIH in Sudanese children was 20.1%. In both dental arches, the permanent molars and incisors were frequently affected, with the demarcated opacity type of MIH being the most common form of defect.
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Affiliation(s)
- Hanna E. Abdalla
- Department of Orthodontic, Paedodontic and Preventive Dentistry, Faculty of Dentistry, University of Khartoum, P.O. Box 102, Khartoum, Sudan
| | - Amal H. Abuaffan
- Department of Orthodontic, Paedodontic and Preventive Dentistry, Faculty of Dentistry, University of Khartoum, P.O. Box 102, Khartoum, Sudan
| | - Arthur Musakulu Kemoli
- Department of Paediatric Dentistry and Orthodontocs, University of Nairobi, P.O. Box 34848, Nairobi, 00100 Kenya
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Bezamat M, Souza JF, Silva FMF, Corrêa EG, Fatturi AL, Brancher JA, Carvalho FM, Cavallari T, Bertolazo L, Machado-Souza C, Koruyucu M, Bayram M, Racic A, Harrison BM, Sweat YY, Letra A, Studen-Pavlovich D, Seymen F, Amendt B, Werneck RI, Costa MC, Modesto A, Vieira AR. Gene-environment interaction in molar-incisor hypomineralization. PLoS One 2021; 16:e0241898. [PMID: 33406080 PMCID: PMC7787379 DOI: 10.1371/journal.pone.0241898] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/22/2020] [Indexed: 01/12/2023] Open
Abstract
Molar incisor hypomineralization (MIH) is an enamel condition characterized by lesions ranging in color from white to brown which present rapid caries progression, and mainly affects permanent first molars and incisors. These enamel defects usually occur when there are disturbances during the mineralization or maturation stage of amelogenesis. Both genetic and environmental factors have been suggested to play roles in MIH’s development, but no conclusive risk factors have shown the source of the disease. During head and neck development, the interferon regulatory factor 6 (IRF6) gene is involved in the structure formation of the oral and maxillofacial regions, and the transforming growth factor alpha (TGFA) is an essential cell regulator, acting during proliferation, differentiation, migration and apoptosis. In this present study, it was hypothesized that these genes interact and contribute to predisposition of MIH. Environmental factors affecting children that were 3 years of age or older were also hypothesized to play a role in the disease etiology. Those factors included respiratory issues, malnutrition, food intolerance, infection of any sort and medication intake. A total of 1,065 salivary samples from four different cohorts were obtained, and DNA was extracted from each sample and genotyped for nine different single nucleotide polymorphisms. Association tests and logistic regression implemented in PLINK were used for analyses. A potential interaction between TGFA rs930655 with all markers tested in the cohort from Turkey was identified. These interactions were not identified in the remaining cohorts. Associations (p<0.05) between the use of medication after three years of age and MIH were also found, suggesting that conditions acquired at the age children start to socialize might contribute to the development of MIH.
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Affiliation(s)
- Mariana Bezamat
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Juliana F. Souza
- Department of Stomatology, Federal University of Paraná, Curitiba, State of Paraná, Brazil
| | - Fernanda M. F. Silva
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Emilly G. Corrêa
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Aluhe L. Fatturi
- Department of Stomatology, Federal University of Paraná, Curitiba, State of Paraná, Brazil
| | - João A. Brancher
- Graduate Program of Dentistry, Positivo University, Curitiba, State of Pará, Brazil
| | - Flávia M. Carvalho
- Department of Genetics, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tayla Cavallari
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Laís Bertolazo
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Cleber Machado-Souza
- Graduate Program of Applied Biotechnology to Child and Adolescent Health, Pequeno Príncipe College, Curitiba, State of Pará, Brazil
| | - Mine Koruyucu
- Department of Pedodontics, Istanbul University, Istanbul, Turkey
| | - Merve Bayram
- Department of Pedodontics, Medipol Istanbul University, Istanbul, Turkey
| | - Andrea Racic
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Benjamin M. Harrison
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Yan Y. Sweat
- Craniofacial Anomalies Research Center and Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, Iowa, United States of America
| | - Ariadne Letra
- Department of Diagnostic and Biomedical Sciences, and Center for Craniofacial Research, UTHealth School of Dentistry at Houston, Houston, Texas, United States of America
| | - Deborah Studen-Pavlovich
- Department of Pediatric Dentistry, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Figen Seymen
- Department of Pedodontics, Istanbul University, Istanbul, Turkey
| | - Brad Amendt
- Craniofacial Anomalies Research Center and Department of Orthodontics, College of Dentistry, The University of Iowa, Iowa City, Iowa, United States of America
| | - Renata I. Werneck
- Graduate Program of Dentistry, Pontifical Catholic University of Paraná, Curitiba, State of Paraná, Brazil
| | - Marcelo C. Costa
- Department of Pediatric Dentistry and Orthodontics, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Adriana Modesto
- Department of Pediatric Dentistry, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Alexandre R. Vieira
- Department of Oral Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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39
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Lavôr JR, Lacerda RHW, Modesto A, Vieira AR. Maxillary incisor enamel defects in individuals born with cleft lip/palate. PLoS One 2020; 15:e0244506. [PMID: 33370403 PMCID: PMC7769421 DOI: 10.1371/journal.pone.0244506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 12/10/2020] [Indexed: 11/19/2022] Open
Abstract
Cleft lip with or without cleft palate (CLP) is considered the most frequent congenital malformations of the head and neck, with cleft individuals exhibiting more chances of presenting abnormalities such as developmental defects of enamel (DDE). Matrix metallopeptidase 2 (MMP2) is a membrane-bound protein with collagen-degrading ability and has important roles in tooth formation and mineralization. The aim of this study was to evaluate the frequency, location, severity and extent of DDE found in the maxillary incisors for groups of individuals born with CLP, as well as understanding their relationship with the cleft side. Besides, this study addresses the hypothesis that DDE can be influenced by variation in the MMP2 genes (rs9923304). Individual samples, clinical history, intraoral photographs and panoramic radiographs were obtained from 233 patients under treatment at the Cleft Lip and Palate Service of the University Hospital Lauro Wanderley at the Federal University of Paraíba. Digital images were examined by the same evaluator using the Classification of Defects According to the Modified DDE Index, and then loaded into the Image Tool software, where two measurements were made: total area of the buccal surface (SA) and the area of the DDE (DA), obtaining the percentage of the surface area affected (%SAD) (ICC = 0.99). Genomic DNA was extracted from saliva samples from 124 participants. Genotyping was carried out using TaqMan chemistry for one marker in MMP2 (rs9923304). Statistical analyses were performed by The Jamovi Project software. The Shapiro-Wilk test was applied, followed by the Student’s t-test and the Mann-Whitney test. Chi-square and Fisher’s exact tests, and odds ratio (OR) with 95% confidence interval (CI) calculations were used to determine Hardy-Weinberg equilibrium and statistically significant differences with an alpha of 0.05. No significant differences in the prevalence and extent of enamel defects were found between male and female individuals born with CLP (p = 0.058256). The frequency of individuals presenting teeth with DDE, in relation to the cleft and non-cleft side, was statistically different (p <0.001; OR = 7.15, CI: 4.674> 7.151> 10.942). However, the averages of %SAD were similar (p = 0.18). The highest means of the %SAD were found in individuals with bilateral cleft lip with or without cleft palate (BCLP) when compared to individuals with unilateral cleft lip with or without cleft palate (UCLP), for the teeth inside (IA) and outside the cleft area (OA) (p <0.001). Regardless of the cleft side, individuals with BCLP were 7.85 times more likely to have more than one third of the tooth surface affected, showing more frequently defects in the three thirds (OA: p <0.001) (IA: p = 0.03), as well as a higher frequency of more than one type of defect (OA: p = 0.000358) (IA: p = 0.008016), whereas in UCLP, defects were isolated and restricted to only one third, more frequently, the incisal third (OA: p = 0.009) (IA: p = 0.001), with greater frequency of milder defects, such as demarcated (p = 0.02) and diffuse (p = 0.008) opacities. A higher frequency of the T allele, less common, was observed in the group of CLP individuals who had all the affected teeth or at least two teeth with %SAD greater than 20% (p = 0.019843). Our results suggest that MMP2 may have a role in the cases that presented DDE and genotyping rs9923304 could serve as the basis for a genomic approach to define risks for individuals born with CLP. Frequency and severity of DDE is strongly related to the CLP phenotype, since the highest values were found for BCLP. However, the extent of the DDE is independent of its relationship with the side of the cleft.
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Affiliation(s)
- Juliane R. Lavôr
- Graduate Program in Dentistry, Universidade Federal da Paraíba, João Pessoa, Brazil
| | | | - Adriana Modesto
- Departments of Pediatric Dentistry and Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Alexandre R. Vieira
- Graduate Program in Dentistry, Universidade Federal da Paraíba, João Pessoa, Brazil
- Departments of Pediatric Dentistry and Oral Biology, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Olmo-González B, Moreno-López R, Ribera-Uribe M. Dental management strategies for Molar Incisor Hypomineralization. PEDIATRIC DENTAL JOURNAL 2020. [DOI: 10.1016/j.pdj.2020.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Vieira AR, Modesto A. Amelogenesis Imperfecta Enamel Changes, Amelogenin, and Dental Caries Susceptibility. FRONTIERS IN DENTAL MEDICINE 2020. [DOI: 10.3389/fdmed.2020.613851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
There is great interest in identifying the subset of individuals in the population that are more susceptible to dental caries. We proposed that a portion of these particular individuals are more susceptible to dental caries due to changes in dental enamel that are related to amelogenin genomic variation. However, apparently amelogenin function can be impacted by inflammation, and this can lead to small changes in the structure of the dental enamel that later in life increases the risk of dental caries.
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Genes in the pathway of tooth mineral tissues and dental caries risk: a systematic review and meta-analysis. Clin Oral Investig 2020; 24:3723-3738. [PMID: 32945961 DOI: 10.1007/s00784-019-03146-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 11/06/2019] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To perform a systematic review of the literature, investigating the influence of tooth mineral tissues genes on dental caries. MATERIALS AND METHODS Five databases were searched. Only human studies with cross-sectional, longitudinal, and case-control design were included. Meta-analysis was performed for each polymorphism, providing allele and genotype estimates. A meta-analysis was performed, pooling several polymorphisms for each gene. A Funnel Plot and Egger's test were also performed. RESULTS A total of 1124 records were found. Of these, 25 papers were included in the systematic review and 18 in the meta-analysis. Most of the studies (52%) were of medium quality. With regard to the allele analysis, the T allele of rs134136 (TFIP11) (OR 1.51; 95%CI 1.02-2.22) showed an association with high experience of caries and the summarization of polymorphisms investigated in the TFIP11 gene, after exclusion of SNP linkage disequilibrium, showed an association with caries experience (OR 1.64; 95%CI 1.08-2.50). An analysis of the homozygous genotype did not show any significant association. The pooled SNPs of AMBN showed associations with caries (OR 0.45; 95%CI 0.29-0.72). The pooled polymorphisms of AMELX were associated with caries experience (OR 1.78; 95%CI 1.23-2.56). In the analysis of the homozygous genotype, no SNP showed a significant association. Egger's test showed no significant publication bias for all models (p > 0.05). CONCLUSION The present findings showed that the genes TFIP11, AMBN, and AMELX play an important role in dental caries. CLINICAL RELEVANCE Several single nucleotide polymorphisms related to the genes in the formation of tooth mineral are linked to the occurrence of dental caries, and these genes have proved to be important for an explanation of differences in the risk of dental caries.
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Elzein R, Chouery E, Abdel-Sater F, Bacho R, Ayoub F. Molar-incisor hypomineralisation in Lebanon: association with prenatal, natal and postnatal factors. Eur Arch Paediatr Dent 2020; 22:283-290. [PMID: 32889651 DOI: 10.1007/s40368-020-00555-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 08/18/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Molar-incisor hypomineralisation is an enamel developmental defect highly prevalent in Lebanon. Literature suggests that perinatal conditions and childhood illnesses might be potential aetiological factors for this affection. AIMS This case-control study aimed to investigate the association of MIH with prenatal, natal and postnatal factors amongst 7-9 years Lebanese children and to end up with recommendations to overcome its occurrence. METHODS Self-administered, structured questionnaire including potential etiological factors was distributed to 659 MIH and non-MIH children's parents. The analysis of data was carried out using Statistical Package for Social Sciences Computer Software (SPSS 21.0, Inc., Chicago, IL, USA). For Statistical analysis, Pearson's chi-square, Fischer's exact test and multivariate regression model were used. A p value of less than 0.05 was considered statistically significant. RESULTS Children whose mothers had consumed food and drinks canned during pregnancy had 2.9 (CI: 1.367 to 6.187) times more likely to have MIH. Those who had history of taking antibiotics had 2.15 (CI: 1.186 to 3.909) times higher odds of MIH than those who did not have while those who had fever episodes during the early childhood years were 2.057 (CI: 1.149 to 3.683) times more likely to develop MIH. CONCLUSION During early childhood, careful handling of high fever, greater public awareness regarding misuse of antibiotics and education about bisphenol A and how to avoid it during pregnancy and breastfeeding are recommended to decrease the occurrence of MIH.
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Affiliation(s)
- R Elzein
- Department of Pediatric Dentistry and Public Dental Health, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon.
| | - E Chouery
- Medical Genetics Unit, Faculty of Medicine, Saint-Joseph University, Beirut, Lebanon
| | - F Abdel-Sater
- Laboratory of Cancer Biology and Cellular Immunology, Department of Biological Sciences, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - R Bacho
- Department of Pediatric Dentistry and Public Dental Health, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
| | - F Ayoub
- Department of Forensic Odontology, Human Identification and Anthropology, Faculty of Dental Medicine, Lebanese University, Beirut, Lebanon
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Feltrin-Souza J, Jeremias F, Alaluusua S, Sahlberg C, Santos-Pinto L, Jernvall J, Sova S, Cordeiro RDCL, Cerri PS. The effect of amoxicillin on dental enamel development in vivo. Braz Oral Res 2020; 34:e116. [PMID: 32901731 DOI: 10.1590/1807-3107bor-2020.vol34.0116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/26/2020] [Indexed: 12/30/2022] Open
Abstract
The exposure to amoxicillin has been associated with molar incisor hypomineralization. This study aimed to determine if amoxicillin disturbs the enamel mineralization in in vivo experiments. Fifteen pregnant rats were randomly assigned into three groups to received daily phosphatase-buffered saline or amoxicillin as either 100 or 500 mg/kg. Mice received treatment from day 13 of pregnancy to day 40 postnatal. After birth, the offsprings from each litter continued to receive the same treatment according to their respective group. Calcium (Ca) and phosphorus (P) content in the dental hard tissues were analyzed from 60 upper first molars and 60 upper incisors by the complexometric titration method and colorimetric analysis using a spectrophotometer at 680 nm, respectively. Lower incisors were analyzed by X-ray microtomography, it was measured the electron density of lingual and buccal enamel, and the enamel and dentin thickness. Differences in Ca and P content and electron density among the groups were analyzed by one-way ANOVA. There was no significant difference on enamel electron density and thickness among the groups (p > 0.05). However, in incisors, the higher dose of amoxicillin decreased markedly the electron density in some rats. There were no statistically significant differences in Ca (p = 0.180) or P content (p = 0.054), although the higher dose of amoxicillin could affect the enamel in some animals. The amoxicillin did not significantly alter the enamel mineralization and thickness in rats.
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Affiliation(s)
- Juliana Feltrin-Souza
- Universidade Federal do Paraná - UFPR, Department of Stomatology, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Fabiano Jeremias
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Pediatric Dentistry, Araraquara, SP, Brazil
| | - Satu Alaluusua
- University of Helsinki, School of Medicine, Department of Oral and Maxillofacial Diseases, Helsinki, Finland
| | - Carin Sahlberg
- University of Helsinki, School of Medicine, Department of Oral and Maxillofacial Diseases, Helsinki, Finland
| | - Lourdes Santos-Pinto
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Pediatric Dentistry, Araraquara, SP, Brazil
| | - Jukka Jernvall
- University of Helsinki, Institute of Biotechnology, Developmental Biology Program, Helsinki, Finland
| | - Susanna Sova
- University of Helsinki, Institute of Biotechnology, Developmental Biology Program, Helsinki, Finland
| | | | - Paulo Sérgio Cerri
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Morphology, Araraquara, SP, Brazil
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Molar-incisor hypomineralization: parent's and children's impact perceptions on the oral health-related quality of life. Eur Arch Paediatr Dent 2020; 22:273-282. [PMID: 32862363 DOI: 10.1007/s40368-020-00556-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 08/19/2020] [Indexed: 01/23/2023]
Abstract
PURPOSE To evaluate the perception of parents and children and the impact of molar and incisor hypomineralization (MIH) on the oral health-related quality of life (OHRQoL). METHODS A cross-sectional study was conducted with a group of 253 children aged 6-12 years presenting MIH and their parents or guardians who initially answered an interview containing socioeconomic and demographic questions as well as the Parental-Caregiver's Perceptions Questionnaire (P-CPQ). The children answered the Child Perceptions Questionnaire (CPQ8-10) and Child Perceptions Questionnaire (CPQ11-14) and the clinical evaluation of MIH was performed. Poisson regression with robust variance was used in the data analysis. RESULTS The parent's perception showed that the impact felt by the children regarding caries leads to a higher oral symptom impact, functional limitation, emotional well-being and total PCPQ score domains, as well. For children with severe MIH, a higher prevalence of impact was felt regarding the functional limitation and emotional well-being. For CPQ8-10, the oral symptoms domain presented the highest mean score, while CPQ11-14 showed the functional limitations domain and P-CPQ the emotional well-being domain. CONCLUSION Considering the perception of parents or guardians, it was concluded that MIH promotes a negative impact on the OHRQoL. MIH had no significant impact on OHRQoL according to children's perceptions.
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Hočevar L, Kovač J, Podkrajšek KT, Battelino S, Pavlič A. Dataset on amelogenesis-related genes variants ( ENAM and ENAM interacting genes) and on human leukocyte antigen alleles (DQ2 and DQ8) distribution in children with and without molar-incisor hypomineralisation (MIH). Data Brief 2020; 32:106224. [PMID: 32944598 PMCID: PMC7481823 DOI: 10.1016/j.dib.2020.106224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 10/25/2022] Open
Abstract
All children, who were born in 2004 and had undergone surgical treatment for recurrent acute tonsillitis and/or acute otitis media at the ear, nose and throat clinic (ENT) between 2004 and 2010, were called on dental examination and blood sampling. Out of 441 invitees, 113 children and their parents/legal guardians agreed to participate. The following data from this group of subjects are presented: the presence of clinical signs of molar-incisor hypomineralisation (MIH), the distribution of human leukocyte antigen (HLA) alleles DQ2 and DQ8 and eight single nucleotide polymorphisms (SNPs) located in amelogenesis-related genes (rs3796704 in the ENAM gene, rs546778141 in the AMBN gene, rs2106416 in the AMELX gene, rs7660807 and rs35286445 in the AMTN gene, rs4870723 in the COL14A1 gene, rs2245803 in the MMP20 gene, and rs3828054 in the TUFT1 gene). Data on clinical signs of MIH were collected in accordance with the recommendation and on the proposed MIH clinical data recording sheet [1], and with appropriate preliminary training and calibration. Data on HLA DQ2 and DQ8 haplotypes and on SNPs of amelogenesis-related genes were obtained using DNA isolated from blood samples taken from subjects. The HLA DQ2 and DQ8 alleles were determined using the EliGene® Coeliac RT Kits (90,048-RT; Elisabeth Pharmacon spol. s.r.o., Brno-Židenice, Czech Republic) on a 7500 Fast RT-PCR System (Applied Biosystems, Waltham, MA, USA). The distributions of SNPs in the amelogenesis-related genes were determined using high resolution melting (HRM) using the Type-IT HRM Master Mix (Qiagen), TaqMan genotyping assays (ID: C__25766207_10; Thermo Fisher Scientific, Waltham, MA, USA) with the TaqMan Universal Master Mix II, or Sanger sequencing using sequencing master mix BigDye® Terminator v3.1 (Applied Biosystems) and ABI 3500 Genetic Analyser (Applied Biosystems). L. Hočevar, J. Kovač, K. Trebušak Podkrajšek, S. Battelino, A. Pavlič, 2020. The possible influence of genetic aetiological factors on molar-incisor hypomineralisation, Arch. Oral. Biol. 118, 104848. https://doi.org/10.1016/j.archoralbio.2020.104848.
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Affiliation(s)
- Luka Hočevar
- Department of Paediatric and Preventive Dentistry, Faculty of Medicine, University of Ljubljana, Hrvatski trg 6, Ljubljana 1000, Slovenia
| | - Jernej Kovač
- University Children's Hospital, University Medical Centre Ljubljana, Bohoričeva 20, Ljubljana, Slovenia
| | - Katarina Trebušak Podkrajšek
- University Children's Hospital, University Medical Centre Ljubljana, Bohoričeva 20, Ljubljana, Slovenia.,Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia
| | - Saba Battelino
- Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, Zaloška 2, Ljubljana, Slovenia.,Department of Otorhinolaryngology, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia
| | - Alenka Pavlič
- Department of Paediatric and Preventive Dentistry, Faculty of Medicine, University of Ljubljana, Hrvatski trg 6, Ljubljana 1000, Slovenia.,Department of Paediatric and Preventive Dentistry, University Medical Centre Ljubljana, Hrvatski trg 6, Ljubljana, Slovenia
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The possible influence of genetic aetiological factors on molar-incisor hypomineralisation. Arch Oral Biol 2020; 118:104848. [PMID: 32777581 DOI: 10.1016/j.archoralbio.2020.104848] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 07/01/2020] [Accepted: 07/16/2020] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The present study searched for evidence of possible associations between some genetic factors that could affect the development of molar-incisor hypomineralisation (MIH). METHODS In 113 patients who were surgically treated at an Otorhinolaryngology and Cervicofacial Surgery Clinic (ORL) during early childhood, human leukocyte antigen (HLA) DQ2 and DQ8 haplotypes and single nucleotide polymorphisms (SNP) of eight amelogenesis-related genes were searched in genomic DNA. Genotypes were determined by high resolution melting (HRM), TaqMan genotyping assays, and Sanger sequencing. Association between MIH and the HLA DQ2 and DQ8 alleles was tested using a univariate logistic regression. The significance of genetic variants was analysed using the Cochran-Armitage tests for trend and the Fisher exact tests. RESULTS We identified MIH in 22 (19.5 %) of the 113 children. Among the evaluated genetic variants, SNP rs2245803 in the MMP20 gene in a homozygous form in a recessive model was associated with MIH development (OR, 2.796; 95 %CI, 1.075 - 4.783; p = 0.0496) with the genotype distribution of TT(3), TG(6) or GG(13) in children with MIH and distribution of TT(18), TG(42) or GG(31) in children without MIH. CONCLUSIONS While the aetiology of MIH remains unclear, our findings suggest that variants of genes associated with amelogenesis may play important roles in susceptibility to MIH.
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Gao J, Li X, Gao L, Chen H, Baras BH, Liu X, Liu H, Rana A, Gao M, Ruan J. Effects of applying amoxicillin in juvenile mice on enamel mineralization and the expression of kallikrein‑related peptidase 4 and tight junction proteins in ameloblasts. Int J Mol Med 2020; 46:179-190. [PMID: 32626909 PMCID: PMC7255463 DOI: 10.3892/ijmm.2020.4598] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 04/07/2020] [Indexed: 11/19/2022] Open
Abstract
Amoxicillin is a common pediatric drug. However, to the best of our knowledge, the role of amoxicillin in enamel hypomineralization has not yet been fully elucidated. The aim of the present study was to assess the effects of amoxicillin on enamel mineralization, the morphology of ameloblasts, as well as the expression of kallikrein-related peptidase 4 (KLK4), and the tight junction proteins, claudin 1 (CLDN1), claudin 4 (CLDN4) and occludin (OCLN), in ameloblasts of juvenile mice. A total of 36 3-day-old Kunming mice were randomly divided into three groups. The mice were administered 0, 50 or 100 mg/kg amoxicillin by intragastric administration for 19 days. The surface morphology and calcium (Ca), phosphorous (P) and carbon contents of mandibular incisors and first molars were examined by scanning electron microscopy and energy dispersive X-ray spectroscopy. Histological changes in the ameloblasts of mandibular incisors were analyzed by hematoxylin and eosin staining. The KLK4, CLDN1, CLDN4 and OCLN expression levels of ameloblasts were observed by immunohistochemical staining. The incidence of white patches in the incisor was 100% in the 100 mg/kg amoxicillin-treated groups. A greater number of enamel defects were observed in the incisal/occlusal half of mandibular incisors/molars compared with in the cervical half in the amoxicillin-treated groups. Following phosphoric-acid treatment, the enamel rod and interrod were aligned in a disorderly manner in the amoxicillin-treated groups. Amoxicillin decreased the Ca/P ratio in the enamel of mandibular incisors and molars. More intercellular spaces among maturation ameloblasts were observed in the amoxicillin-treated groups. Amoxicillin decreased KLK4 and CLDN1, CLDN4 and OCLN expression in mature ameloblasts. The administration of amoxicillin in juvenile mice induced enamel hypomineralization, and the effects of amoxicillin on enamel hypomineralization may be mediated via multiple pathways.
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Affiliation(s)
- Jianghong Gao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xinmei Li
- Department of Preventive Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Liping Gao
- Department of Preventive Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Haiyan Chen
- Core Research Laboratory, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Bashayer H Baras
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Xiaojing Liu
- Department of Preventive Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Hao Liu
- Department of Preventive Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Ayesha Rana
- Department of Preventive Dentistry, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Meili Gao
- Department of Biological Science and Engineering, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
| | - Jianping Ruan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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YILDIZ TELATAR G, SAYDAM F. Lack of Association between Enamel Gene Variants and Dental Caries in Adults. CUMHURIYET DENTAL JOURNAL 2020. [DOI: 10.7126/cumudj.690129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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50
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Khalaf ME, Akbar A, Alkhubaizi Q, Qudeimat M. Caries among adult patients with controlled celiac disease: A cross-sectional study. SPECIAL CARE IN DENTISTRY 2020; 40:457-463. [PMID: 32583903 DOI: 10.1111/scd.12491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Celiac disease (CD) is one of the most common chronic gastrointestinal disorders in the world. Currently, the literature about the dental profiles of patients with celiac disease is sparse and no studies have reported on the oral conditions and caries status of CD patients in Kuwait. OBJECTIVE This study investigated the association between CD and caries experience. METHODS Two groups were examined; study and control. The study group consisted of controlled celiac disease patients. The control group consisted of subjects who were matched for age and gender to the study group participants. Both groups received clinical and radiographic examinations of their oral cavity. Parameters recorded for the study purposes were-dental caries index (decayed, missing, and filled teeth), salivary flow rates (stimulated and unstimulated), salivary buffering capacity and Lactobacilli and mutans Streptococci bacterial counts. RESULTS Patients with CD had statistically significant fewer missing teeth than the controls. There were no other significant differences. Measured stimulated and unstimulated salivary flow rates and salivary buffering capacity showed no statistical differences. Bacterial counts revealed no significant differences. CONCLUSION Adult patients with controlled CD showed fewer missing teeth than their counterparts. Other caries and salivary parameters showed no statistical differences between the two groups.
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Affiliation(s)
- Mai E Khalaf
- Faculty of Dentistry, Health Sciences Center, Faculty of Dentistry, Health Sciences Center, Kuwait University, Jabriya, Kuwait
| | - Aqdar Akbar
- Faculty of Dentistry, Health Sciences Center, Faculty of Dentistry, Health Sciences Center, Kuwait University, Jabriya, Kuwait
| | - Qoot Alkhubaizi
- Faculty of Dentistry, Health Sciences Center, Faculty of Dentistry, Health Sciences Center, Kuwait University, Jabriya, Kuwait
| | - Muawia Qudeimat
- Faculty of Dentistry, Health Sciences Center, Faculty of Dentistry, Health Sciences Center, Kuwait University, Jabriya, Kuwait
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