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Abstract
Amelogenin plays a crucial role in tooth enamel formation, and mutations on X-chromosomal amelogenin cause X-linked amelogenesis imperfecta (AI). Amelogenin pre-messenger RNA (mRNA) is highly alternatively spliced, and during alternative splicing, exon4 is mostly skipped, leading to the formation of a microRNA (miR-exon4) that has been suggested to function in enamel and bone formation. While delivering the functional variation of amelogenin proteins, alternative splicing of exon4 is the decisive first step to producing miR-exon4. However, the factors that regulate the splicing of exon4 are not well understood. This study aimed to investigate the association between known mutations in exon4 and exon5 of X chromosome amelogenin that causes X-linked AI, the splicing of exon4, and miR-exon4 formation. Our results showed mutations in exon4 and exon5 of the amelogenin gene, including c.120T>C, c.152C>T, c.155C>G, and c.155delC, significantly affected the splicing of exon4 and subsequent miR-exon4 production. Using an amelogenin minigene transfected in HEK-293 cells, we observed increased inclusion of exon4 in amelogenin mRNA and reduced miR-exon4 production with these mutations. In silico analysis predicted that Ser/Arg-rich RNA splicing factor (SRSF) 2 and SRSF5 were the regulatory factors for exon4 and exon5 splicing, respectively. Electrophoretic mobility shift assay confirmed that SRSF2 binds to exon4 and SRSF5 binds to exon5, and mutations in each exon can alter SRSF binding. Transfection of the amelogenin minigene to LS8 ameloblastic cells suppressed expression of the known miR-exon4 direct targets, Nfia and Prkch, related to multiple pathways. Given the mutations on the minigene, the expression of Prkch has been significantly upregulated with c.155C>G and c.155delC mutations. Together, we confirmed that exon4 splicing is critical for miR-exon4 production, and mutations causing X-linked AI in exon4 and exon5 significantly affect exon4 splicing and following miR-exon4 production. The change in miR-exon4 would be an additional etiology of enamel defects seen in some X-linked AI.
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Affiliation(s)
- R. Shemirani
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, CA, USA
- Oral and Craniofacial Science, Graduate Division, University of California, San Francisco, CA, USA
| | - M.H. Le
- Oral and Craniofacial Science, Graduate Division, University of California, San Francisco, CA, USA
- Department of Preventive and Restorative Dental Sciences, University of California, San Francisco, CA, USA
- College of Dental Medicine, California Northstate University, Elk Grove, CA, USA
| | - Y. Nakano
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco, CA, USA
- Center for Children’s Oral Health Research, School of Dentistry, University of California, San Francisco, CA, USA
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Zhang Y, Li H, Cui D, Liu Y, Tian Q, Zheng L, Wan M. Epigenetics in developmental defects of enamel: A scoping review. Oral Dis 2023; 29:2366-2375. [PMID: 36939657 DOI: 10.1111/odi.14568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 02/21/2023] [Accepted: 03/15/2023] [Indexed: 03/21/2023]
Abstract
OBJECTIVES The significant role of epigenetics has been revealed in normal enamel formation process and occurrence of developmental defects. This presented literature is aiming at summarizing the regulatory function of epigenetics in physiological amelogenesis process and reviewing the epigenetic mechanisms in occurrence of developmental defects of enamel (DDE), so as to provide biological foundation evidence to support early predication and clinical management of DDE. METHOD An extensive literature review was conducted using electronic databases MEDLINE (through PubMed), Web of Science and EMBASE up to November 30, 2022. Studies about epigenetic effects on enamel tissue or cells associated with amelogenesis, including in vivo studies using human or animal models, and in vitro studies, are selected. RESULTS A total of 22 studies were included. Epigenetic factors or effects specifically activate or silence certain genes, which may regulate related biological activities including cell proliferation, cell differentiation, enamel secretion, and mineralization during the process of amelogenesis. Once the status of epigenetic modification is altered, the quantity and quality of enamel may both be disturbed, which can finally result in DDE. CONCLUSION Epigenetics plays a noteworthy role of regulating the amelogenesis process and DDE potentially by altering the expression levels of genes related to enamel formation, providing a new perspective of early predication and clinical management of DDE.
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Affiliation(s)
- Yi Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Hongyu Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dixin Cui
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qinglu Tian
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liwei Zheng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Mian Wan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Juárez-López MLA, Salazar-Treto LV, Hernández-Monjaraz B, Molina-Frechero N. Etiological Factors of Molar Incisor Hypomineralization: A Systematic Review and Meta-Analysis. Dent J (Basel) 2023; 11:dj11050111. [PMID: 37232762 DOI: 10.3390/dj11050111] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/04/2023] [Accepted: 04/20/2023] [Indexed: 05/27/2023] Open
Abstract
Molar incisor hypomineralization (MIH) is a defect of the dental enamel that predominantly affects first molars and permanent incisors. Identifying the significant risk factors associated with MIH occurrence is essential for the implementation of prevention strategies. The purpose of this systematic review was to determine the etiological factors associated with MIH. A literature search was carried out from six databases until 2022; it covered pre-, peri-, and postnatal etiological factors. The PECOS strategy, PRISMA criteria, and the Newcastle-Ottawa scale were used, and 40 publications were selected for qualitative analysis as well as 25 for meta-analysis. Our results revealed an association between a history of illness during pregnancy (OR 4.03 (95% CI, 1.33-12.16), p = 0.01) and low weight at birth (OR 1.23 (95% CI, 1.10-1.38), p = 0.0005). Furthermore, general illness in childhood (OR 4.06 (95% CI, 2.03-8.11), p = 0.0001), antibiotic use (OR 1.76 (95% CI, 1.31-2.37), p = 0.0002), and high fever during early childhood (OR 1.48 (95% CI, 1.18-1.84), p = 0.0005) were associated with MIH. In conclusion, the etiology of MIH was found to be multifactorial. Children with health disorders in the first years of life and those whose mothers underwent illnesses during pregnancy might be more susceptible to MIH.
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Affiliation(s)
- María Lilia A Juárez-López
- Postgraduate and Research Unit, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico
- Pediatric Dentistry Deparment, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico
| | - Leslie Vanessa Salazar-Treto
- Pediatric Dentistry Deparment, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico
| | - Beatriz Hernández-Monjaraz
- Postgraduate and Research Unit, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico
- Pediatric Dentistry Deparment, FES Zaragoza, National Autonomous University of Mexico, Mexico City 09230, Mexico
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Rogalnikovaite K, Bendoraitiene E, Andruskeviciene V. Associations of Prenatal Vitamin D status with Oral Health in Offspring: A Systematic Review. Oral Health Prev Dent 2022; 20:393-400. [PMID: 36264559 DOI: 10.3290/j.ohpd.b3505831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
PURPOSE The aim of this work is to evaluate the impact of prenatal vitamin D levels on oral health in offspring. MATERIALS AND METHODS The search was carried out in three databases: MEDLINE (PubMed), ResearchGate and Wiley Online Library. The inclusion criteria were randomised controlled trials and cohort studies published between June 16, 2017 and June 16, 2022, laboratory assessment of prenatal vitamin D status and evaluation of primary or mixed dentition for observation of dental caries and developmental defects of enamel. The risk of bias for randomised controlled trials was analysed according to the Cochrane risk-of-bias tool and Newcastle-Ottawa scale was used to assess risk of bias for cohort studies. RESULTS A total of 177 studies were identified, 11 were included in the data synthesis. Eight out of 11 studies were considered as high quality and the other 3 studies had moderate risk of bias. The synthesis of data revealed that the impact of prenatal vitamin D status on oral health in children is quite controversial and subsequent studies are necessary to examine whether vitamin D levels affect the risk of developing dental caries and enamel defects. CONCLUSION The effect of prenatal vitamin D on oral health in offspring is not entirely clear. Since disturbances in dental hard tissues have a polyetiological origin, health specialists need to notify mothers about other possible risk factors and emphasise the importance of eating habits and individual oral hygiene in early childhood.
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Shetty AJ, Dixit UB, Kirubakaran R. Prevalence of molar incisor hypomineralization in India: A systematic review and meta-analysis. J Indian Soc Pedod Prev Dent 2022; 40:356-367. [PMID: 36861551 DOI: 10.4103/jisppd.jisppd_462_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
RESEARCH QUESTION To estimate the pooled prevalence of molar incisor hypomineralization (MIH) in children from India. RESEARCH PROTOCOL The PRISMA guidelines were followed. LITERATURE SEARCH An electronic search of the databases was performed to find prevalence studies of MIH in children above age 6 years in India. DATA EXTRACTION Two authors independently extracted the data from the 16 included studies. QUALITY APPRAISAL The risk of bias was assessed using a modified version of the Newcastle-Ottawa Scale adapted for cross-sectional studies. DATA ANALYSIS The pooled prevalence estimate of MIH was calculated using logit transformed data with inverse variance approach in a random-effects model with 95% confidence interval (CI). Heterogeneity was assessed with the I2 statistic. The subgroups were analyzed to assess the pooled prevalence of MIH according to sex, arch-wise proportion of MIH-affected teeth, and proportion of children with the MIH phenotypes. RESULTS AND INTERPRETATION OF RESULTS Sixteen studies included in the meta-analysis represented 7 states of India. A total of 25,273 children were included in the meta-analysis. The pooled prevalence of MIH in India was estimated to be 10.0% (95% CI: 0.07, 0.12) with significantly high heterogeneity between the included studies. The pooled prevalence did not vary according to sex. The pooled proportions of MIH-affected teeth were similar in the maxillary and mandibular arches. The pooled proportion of children with MH phenotype was higher (56%) than those with M + IH phenotype (44%). Further studies with standardized criteria for recording MIH are needed to ascertain the prevalence of MIH in India.
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Affiliation(s)
- Ashveeta J Shetty
- Department of Pediatric and Preventive Dentistry, D. Y. Patil University, School of Dentistry, Navi Mumbai, Maharashtra, India
| | - Uma B Dixit
- Department of Pediatric and Preventive Dentistry, D. Y. Patil University, School of Dentistry, Navi Mumbai, Maharashtra, India
| | - Richard Kirubakaran
- Biostatistics, Centre for Biostatistics and Evidence Based Medicine, Vellore, Tamil Nadu, India
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Popescu M, Ionescu M, Scrieciu M, Popescu SM, Mercuţ R, Amărăscu MO, Iacov Crăiţoiu MM, Lazăr D, Mercuţ V. Etiology Study of Acquired Developmental Defects of Enamel and Their Association with Dental Caries in Children between 3 and 19 Years Old from Dolj County, Romania. Children (Basel) 2022; 9:children9091386. [PMID: 36138695 PMCID: PMC9497921 DOI: 10.3390/children9091386] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/08/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022]
Abstract
Background: Developmental defects of enamel (DDE) are frequently encountered in primary and permanent teeth, yet their etiology is not completely known. Enamel hypoplasia is considered a predisposing factor for early caries. The objective of this study was the evaluation of several risk factors potentially causing DDE and the possible association between DDE and dental caries. Methods: This study was performed on a group of 213 rural children from Romania. It combined a thorough dental examination for all children, and a questionnaire filled in by their mothers, regarding the evolution of their pregnancy and the child’s health status in the first years of life. Results: There was no statistically significant association between DDE presence and data regarding the evolution of pregnancy, mothers’ health status or children’s conditions during early childhood. There was a significant association between the use of amoxicillin, ibuprofen, and cephalosporin during the period of formation of permanent teeth, and one environmental factor (water source), and the presence of DDE (Chi Square, p < 0.05). Also, DDEs were associated with the presence of caries (Fisher, p = 0.001). Conclusions: Children who consumed water from private wells and children who received medication during early childhood developed more enamel defects, presenting a higher risk of caries development.
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Affiliation(s)
- Mihai Popescu
- Department of Pedodontics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Mihaela Ionescu
- Department of Medical Informatics and Biostatistics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Correspondence: (M.I.); (R.M.)
| | - Monica Scrieciu
- Department of Prosthodontics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Sanda Mihaela Popescu
- Department of Oral Rehabilitation, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Răzvan Mercuţ
- Department of Plastic Surgery, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
- Correspondence: (M.I.); (R.M.)
| | - Marina Olimpia Amărăscu
- Department of Prosthodontics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | | | | | - Veronica Mercuţ
- Department of Prosthodontics, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
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Durbin A, Amaechi BT, Abrams S, Mandelis A, Werb S, Roebuck B, Durbin J, Wang R, Daneshvarfard M, Sivagurunathan K, Bozec L. Protocol for a Case Control Study to Evaluate Oral Health as a Biomarker of Child Exposure to Adverse Psychosocial Experiences. Int J Environ Res Public Health 2022; 19:ijerph19063403. [PMID: 35329091 PMCID: PMC8948931 DOI: 10.3390/ijerph19063403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/07/2022] [Accepted: 03/08/2022] [Indexed: 11/16/2022]
Abstract
Background: The early identification of children who have experienced adversity is critical for the timely delivery of interventions to improve coping and reduce negative consequences. Self-report is the usual practice for identifying children with exposure to adversity. However, physiological characteristics that signal the presence of disease or other exposures may provide a more objective identification strategy. This protocol describes a case–control study that assesses whether exposure to adversity is more common in children with tooth enamel anomalies compared to children without such anomalies. Methods: For 150 mother–child pairs from a pediatric dental clinic in Toronto, Canada, maternal interviews will assess the child’s adverse and resilience-building experiences. Per child, one (exfoliated or extracted) tooth will be assessed for suspected enamel anomalies. If anomalies are present, the child is a case, and if absent, the child is a control. Tooth assessment modalities will include usual practice for dental exams (visual assessment) and modalities with greater sensitivity to identify anomalies. Conclusion: If structural changes in children’s teeth are associated with exposure to adversity, routine dental exams could provide an opportunity to screen children for experiences of adversity. Affected children could be referred for follow-up.
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Affiliation(s)
- Anna Durbin
- MAP Centre for Urban Health Solutions, Unity Health Toronto, Toronto, ON M5B 1W8, Canada; (R.W.); (M.D.)
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
- Correspondence: ; Tel.: +1-416-824-1078
| | - Bennett T. Amaechi
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA;
| | - Stephen Abrams
- Cliffcrest Dental Office, Four Cell Consulting, Quantum Dental Technologies, Toronto, ON M6B 1L3, Canada;
| | - Andreas Mandelis
- Center for Diffusion-Wave and Photoacoustic Technologies (CADIPT), University of Toronto, Toronto, ON M5T 1R8, Canada; (A.M.); (K.S.)
| | - Sara Werb
- Toronto Children’s Dentistry, Toronto, ON M5T 1R8, Canada;
| | - Benjamin Roebuck
- Victimology Research Centre, Algonquin College, Ottawa, ON K2G 1V8, Canada;
| | - Janet Durbin
- Provincial System Support Program (PSSP), Centre for Addiction and Mental Health (CAMH), Toronto, ON M5S 2S1, Canada;
| | - Ri Wang
- MAP Centre for Urban Health Solutions, Unity Health Toronto, Toronto, ON M5B 1W8, Canada; (R.W.); (M.D.)
| | - Maryam Daneshvarfard
- MAP Centre for Urban Health Solutions, Unity Health Toronto, Toronto, ON M5B 1W8, Canada; (R.W.); (M.D.)
| | - Konesh Sivagurunathan
- Center for Diffusion-Wave and Photoacoustic Technologies (CADIPT), University of Toronto, Toronto, ON M5T 1R8, Canada; (A.M.); (K.S.)
| | - Laurent Bozec
- Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada;
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Wong DH, Rajan S, Hallett KB, Manton DJ. Medical and dental characteristics of children with chromosome 22q11.2 deletion syndrome at the Royal Children's Hospital, Melbourne. Int J Paediatr Dent 2021; 31:682-690. [PMID: 33222329 DOI: 10.1111/ipd.12755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/06/2020] [Accepted: 11/05/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Chromosome 22q11.2 deletion syndrome (22q11.2DS) is a multifaceted syndrome with a variable phenotype. Few studies have described the associated dental characteristics and their relationship with medical co-morbidities; and no Australian data exist. AIM To determine the clinical manifestations and correlations between oral and medical conditions in children with 22q11.2DS. DESIGN A retrospective observational study. Children genetically diagnosed with 22q11.2DS at the Royal Children's Hospital Melbourne were selected; their medical and dental characteristics were collated and analysed. RESULTS The study population (n = 57; mean age 11.5 years, range 2-27 years) experienced a range of medical conditions involving multiple medical systems; of whom 44 (77.2%) had caries experience, 7 (12.3%) developmentally missing teeth, and 31 (54.4%) developmental defects of enamel (DDE). Smaller proportions of primary teeth were affected by DDE in children with congenital heart disease (2.2% vs 9.7%; P = .02), and cardiac surgery (0.2% vs 9%; P = .001). Conversely, children with hypoparathyroidism (n = 2) had significantly higher proportions of primary teeth affected by DDE (27.5% vs 4%; P = .02). CONCLUSIONS Significant associations existed between medical conditions (congenital heart disease, history of cardiac surgery, and hypoparathyroidism) and primary dentition DDE in children with 22q11.2 DS.
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Affiliation(s)
- Deborah H Wong
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia.,The Royal Children's Hospital Melbourne, Melbourne, Vic., Australia
| | - Sadna Rajan
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia
| | - Kerrod B Hallett
- The Royal Children's Hospital Melbourne, Melbourne, Vic., Australia
| | - David J Manton
- Paediatric Dentistry, Melbourne Dental School, The University of Melbourne, Melbourne, Vic., Australia.,The Royal Children's Hospital Melbourne, Melbourne, Vic., Australia.,Centrum voor Tandheelkunde en Mondzorgkunde, Universitair Medisch Centrum Groningen, Groningen, The Netherlands
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Li H, Cui D, Zheng L, Zhou Y, Gan L, Liu Y, Pan Y, Zhou X, Wan M. Bisphenol A Exposure Disrupts Enamel Formation via EZH2-Mediated H3K27me3. J Dent Res 2021; 100:847-857. [PMID: 33655795 DOI: 10.1177/0022034521995798] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Enamel formation is a serial and complex biological process, during which related genes are expressed progressively in a spatiotemporal manner. This process is vulnerable to environmental cues, resulting in developmental defects of enamel (DDE). However, how environmental factors are biologically integrated during enamel formation is still poorly understood. Here, we investigated the mechanism of DDE elicited by a model endocrine-disrupting chemical, bisphenol A (BPA), in mouse incisors. We show that BPA exposure leads to DDE in mouse incisors, as well as excessive proliferation in dental epithelial stem/progenitor cells. Western blotting, chromatin immunoprecipitation sequencing, and immunofluorescence staining revealed that this effect was accompanied by upregulation of a repressive mark, H3K27me3, in the labial cervical loop of mouse incisors. Perturbation of H3K27me3 methyltransferase EZH2 repressed the level of H3K27me3 and partially attenuated the excessive proliferation in dental epithelial stem/progenitor cells and DDE induced by BPA exposure. Overall, our results demonstrate the essential role of repressive histone modification H3K27me3 in DDE elicited by exposure to an endocrine-disrupting chemical.
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Affiliation(s)
- H Li
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D Cui
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Gan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Liu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Pan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Pediatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - M Wan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Bensi C, Costacurta M, Belli S, Paradiso D, Docimo R. Relationship between preterm birth and developmental defects of enamel: A systematic review and meta-analysis. Int J Paediatr Dent 2020; 30:676-686. [PMID: 32243004 DOI: 10.1111/ipd.12646] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/23/2020] [Accepted: 03/26/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND A putative relationship between preterm birth and developmental defects of enamel (DDE) has been described in the literature. Although systematic reviews have found preterm birth may lead to DDE, the effect size has not been quantified. AIM The aim of this systematic review and meta-analysis was to determine the association between preterm birth and DDE. DESIGN An electronic search was performed in PubMed, Cochrane Library, Scopus, and Web of Science to identify relevant studies. Two independent reviewers selected the studies in a two-stage process in accordance with the PRISMA statement. The risk of bias was also analysed using the Newcastle-Ottawa Scale criteria. RESULTS A total of 1041 publications were considered after an electronic search, 20 of which were included in the systematic review. Of these 20 publications, 18 articles were included in a meta-analysis. The meta-analysis detected an increased risk of developing DDE in preterm children [OR: 3.27 (95% CI 2.02, 5.30; P < .001)], with a greater risk in the primary dentition. In addition to this, a subgroup analysis showed a greater risk in the development of hypoplasia in preterm children. CONCLUSIONS The results of this meta-analysis showed a three times increased risk of developing DDE in preterm children.
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Affiliation(s)
- Caterina Bensi
- Paediatric Dentistry Post-Graduate School, University of Rome "Tor Vergata", Rome, Italy
| | - Micaela Costacurta
- Paediatric Dentistry, Department of Surgical Sciences, University of Rome "Tor Vergata", Rome, Italy
| | - Stefano Belli
- Visiting dentist at the MaxillofacialSurgery Unit, Santa Maria della Misericordia Hospital, Sant'Andrea delle Fratte (Perugia), Italy
| | - Daniele Paradiso
- S.S.D SurgicalDentistry and Ambulatory, Santa Marian della Misericordia Hospital, Sant'Andrea delle Fratte (Perugia), Italy
| | - Raffaella Docimo
- Paediatric Dentistry, Department of Surgical Sciences, University of Rome "Tor Vergata", Rome, Italy
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Ibiyemi O, Zohoori FV, Valentine RA, Kometa S, Maguire A. Prevalence and extent of enamel defects in the permanent teeth of 8-year-old Nigerian children. Community Dent Oral Epidemiol 2017; 46:54-62. [PMID: 28895192 DOI: 10.1111/cdoe.12328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 07/16/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Enamel formation is a vulnerable developmental process, susceptible to environmental influences such as excessive systemic fluoride (F) exposure and infant/childhood disease. This study determined prevalence and extent of developmental enamel defects (DDE) and dental fluorosis in 8-year-old Nigerians and explored associations with key predictors. METHODS A sample of 322 healthy 8-year-olds (155 males, 167 females) from primary schools in lower and higher water F areas of (i) rural and (ii) urban parts of Oyo State in south-west Nigeria (n = 4 areas) (in which the mean (SD) F concentration of community water supplies ranged from 0.07 (0.02) to 2.13 (0.64) mg F/L) were dentally examined using modified DDE (mDDE) and Thylstrup and Fejerskov (TF) indices. Drinking waters, cooking waters and toothpaste samples were analysed for F concentration using a F ion-selective electrode (F-ISE). Information on infant/childhood diseases, infant feeding and tooth cleaning practices was obtained from parents/legal guardians. Data were analysed using ANOVA, chi-square tests, Spearman correlation and binary logistic regression as appropriate. RESULTS Mean (SD) F concentration of actual drinking and actual cooking waters consumed by participants was 0.25 (0.20) and 0.24 (0.14) mg F/L respectively in the urban higher F area; 1.11 (1.00) and 1.16 (1.02) mg F/L, respectively in the rural higher F area (P < .05). Overall, mouth prevalence of DDE in the permanent dentition was 61.2% with a mean (SD) of 2.4 (2.2) index teeth affected. Dental fluorosis mouth prevalence was 29.8% with a mean of 2.1 (3.7) teeth affected. Prevalence and extent of DDE and dental fluorosis were greater in higher F than lower water F areas (P < .001). A weak positive correlation was seen between extent of dental fluorosis and drinking water F concentration (ρ = 0.28). The absence of infant/childhood disease was associated with a lower risk of DDE being present (P = .001), with an odds ratio of 0.43 (95% CI = 0.26, 0.71). Gender was a statistically significant (P = .014) predictor for dental fluorosis with females having a higher risk OR 1.94 (95% CI = 1.14, 3.28) of dental fluorosis than males. CONCLUSIONS In these Nigerian 8-year-olds (n = 322), mouth prevalence of DDE was 61.2% (mean (SD) teeth affected = 2.4 (2.2)), and a key positive predictor was a history of infant/childhood disease. With 29.8% of these children exhibiting dental fluorosis (mean (SD) teeth affected = 2.1(3.7)), drinking water F concentration was identified as a positive predictor, along with gender, with females more at risk of dental fluorosis than males.
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Affiliation(s)
- Olushola Ibiyemi
- Centre for Oral Health Research, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK.,Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Fatemeh V Zohoori
- School of Health and Social Care, Teesside University, Middlesbrough, UK
| | - Ruth A Valentine
- Centre for Oral Health Research, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Simon Kometa
- Newcastle University Information Technology Service (NUIT), Newcastle University, Newcastle upon Tyne, UK
| | - Anne Maguire
- Centre for Oral Health Research, School of Dental Sciences, Newcastle University, Newcastle upon Tyne, UK
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Harika R, Dutta B, Arun P, Teja RP. A novel clinical approach for long-term retention and durability of resin restorations bonded to multiple developmental defects of enamel. J Int Soc Prev Community Dent 2016; 6:597-601. [PMID: 28032054 PMCID: PMC5184396 DOI: 10.4103/2231-0762.195507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Dental enamel is a unique, highly mineralized tissue of ectodermal origin. It is characterized by lack of metabolic activity once formed, implying that disturbances during development can manifest as permanent defects in the erupted tooth. Although the etiology of enamel defects may be attributed to local, systemic, genetic, or environmental factors, most are likely to be multifactorial in nature. The time frame of exposure and the mechanism underpinning the causative factors determine the presentation of these defects. These developmental defects of enamel (DDE) may range from slight abnormalities of the tooth's color to a complete absence of the enamel, some of which may be sensed by an individual as being disfiguring and call for treatment to improve the appearance of the dentition. Molar incisor hypomineralization (MIH) is a relatively common condition that varies in clinical severity, remains localized to permanent incisors and first permanent molars, and whose prevalence varies between 2.8 and 25% depending upon the study. Adhesion and retention of resin restorations is challenging in long-term rehabilitation in these cases. This paper presents a novel approach in the functional and esthetic rehabilitation of a 13-year-old female child diagnosed with multiple DDEs.
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Affiliation(s)
- Rapala Harika
- Department of Pedodontics and Preventive Dentistry, Mamatha Dental College and Hospital, Khammam, Telangana, India
| | - Brahmananda Dutta
- Department of Pedodontics and Preventive Dentistry, Kalinga Institute of Dental Sciences, Bhubaneswar, Odisha, India
| | - Parsa Arun
- Department of Pedodontics and Preventive Dentistry, Meghana Institute of Dental Sciences, Nizamabad, Telangana, India
| | - Raveen P Teja
- Department of Prosthodontics and Implantology, GSL Dental College and Hospital, Rajamundry, Andhra Pradesh, India
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