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Chauhan J, Sharma P, Shetty D, Kumar P, Jain S, Suroliya V, Garg P. Association of genetic polymorphism of interleukin 1-alpha and interleukin 1-beta with external apical root resorption in orthodontic patients. Int Orthod 2024; 22:100869. [PMID: 38513309 DOI: 10.1016/j.ortho.2024.100869] [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: 10/31/2023] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 03/23/2024]
Abstract
OBJECTIVE To assess the allele rs 1143634 in IL-1β and rs1800587 in IL-1α in patients for orthodontically induced external apical root resorption (EARR). MATERIAL AND METHODS Intra-oral periapical radiograph (IOPA) of maxillary incisors of 142 Patients were evaluated for resorption at two time points; before the start of fixed mechanotherapy (T1) and after one year of treatment (T2). The individuals with root resorption<2mm were categorized as a control group (group 1; n=90), and resorption>2mm were categorized as case group (group 2; n=52). Buccal swabs of all patients were taken and DNA could be isolated in 95 out of 142 samples (group 1 {n=58}, group 2 {n=37}), which were then screened for the selected two polymorphic targets to determine the nucleotide status of these targets. Tetra-primer ARMS PCR reactions were carried out using all 4 primers for each polymorphism. RESULTS rs11800587 was not associated with risk of EARR in any inheritance model. Chi-square test for association of alleles with EARR revealed that rs1143634 was associated with the risk of EARR in an allelic model in such a way that A allele of this SNP increased the risk of EARR 4 folds [OR=4.375; P=0.016]. However, the adjusted level of significance using the Holm-Bonferroni method for rs1143634 was P<0.010 for A and G comparison rendering the results non-significant. CONCLUSION SNP rs1143634 and SNP rs11800587 were not associated with risk of EARR in any inheritance model.
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Affiliation(s)
- Jyoti Chauhan
- Department of Orthodontics and dentofacial Orthopedics, I.T.S Centre for Dental studies and Research, Ghaziabad, India
| | - Payal Sharma
- Department of Orthodontics and dentofacial Orthopedics, I.T.S Centre for Dental studies and Research, Ghaziabad, India
| | - Devicharan Shetty
- Department of Oral and Maxillofacial Pathology, I.T.S Centre for Dental studies and Research, Ghaziabad, India
| | - Piush Kumar
- Department of Orthodontics and dentofacial Orthopedics, I.T.S Centre for Dental studies and Research, Ghaziabad, India
| | - Shubhangi Jain
- Department of Orthodontics and dentofacial Orthopedics, I.T.S Centre for Dental studies and Research, Ghaziabad, India.
| | | | - Prince Garg
- Genome sequencing Lab, ILBS Hospital, New Delhi, India
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Sambale J, Bruns PM, Jablonski-Momeni A, Heinzel-Gutenbrunner M, Korbmacher-Steiner HM. Prognostic risk factors for apical root resorption in orthodontic patients - Are the Kjær's morphologic characteristics of clinical relevance? Ann Anat 2024; 255:152287. [PMID: 38795834 DOI: 10.1016/j.aanat.2024.152287] [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: 01/30/2024] [Revised: 04/02/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Abstract
BACKGROUND Patients undergoing orthodontic treatment (OT) face an increased risk of developing external apical root resorption (EARR). A prognostic risk assessment prior to OT can potentially be conducted through anatomical features in panoramic radiography. This retrospective study aimed to assess the significance of Kjær's morphological characteristics in analyzing the risk of EARR. METHODS Panoramic radiographs of 1,156 patients (624 females, 532 males) were retrospectively analyzed. Anamnestic and treatment-related data were extracted from patient records. The mean age at the start of OT was 12.8 ± 2.2 years (min. 6.4 years, max. 22.3 years) and at the end of OT 15.9 years (min. 8.5 years, max. 24.1 years). The mean treatment duration was 3.1 ± 1.6 years. Panoramic radiographs with a minimum of two per patient were examined for the presence of Kjær's characteristics. The degree of EARR was registered defining resorption in four degrees of severity. Bivariate analysis and multivariate Poisson regression were performed to assess the association between Kjær's characteristics and EARR patient- and tooth- related (α = 0.05). RESULTS In total, 72.8% of the patients showed EARR at the end of OT with lateral maxillary incisors most frequently affected. Short roots (p < 0.001) were significantly associated with EARR in patients. Tooth-related microdontia (#12, #22, lower second premolars), narrow crowns (#11, #21, lower incisors), short roots (upper incisors, lower first molars) and ectopia (#11, #21, #13), such as shorter distal roots of the mandibular first molar showed a significant association with EARR depending on severity degree. The type of orthodontic appliance (fixed: p < 0.001, fixed and removeable: p = 0.008), as well as treatment duration (p < 0.001) were also identified as risk factors for EARR. CONCLUSIONS Although the risk assessment for EARR development through panoramic radiography analysis is limited, predisposition appears to be present in specific dental characteristics and treatment-related factors.
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Affiliation(s)
- Janine Sambale
- Department of Orthodontics, Clinic of Dentistry, Philipps-University Marburg, Georg-Voigt-Str. 3, Marburg 35039, Germany.
| | - Pia Marie Bruns
- Department of Orthodontics, Clinic of Dentistry, Philipps-University Marburg, Georg-Voigt-Str. 3, Marburg 35039, Germany
| | - Anahita Jablonski-Momeni
- Department of Orthodontics, Clinic of Dentistry, Philipps-University Marburg, Georg-Voigt-Str. 3, Marburg 35039, Germany
| | | | - Heike Maria Korbmacher-Steiner
- Department of Orthodontics, Clinic of Dentistry, Philipps-University Marburg, Georg-Voigt-Str. 3, Marburg 35039, Germany
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Litchfield FE, Oster RA, Kau CH, Lamani E. External apical root resorption in African American orthodontic patients. Eur J Orthod 2024; 46:cjad059. [PMID: 37851998 PMCID: PMC10783150 DOI: 10.1093/ejo/cjad059] [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] [Indexed: 10/20/2023]
Abstract
OBJECTIVE External apical root resorption (EARR) is a side effect of orthodontic treatment that results in root shortening. However, this condition has yet to be evaluated in African Americans. The aim of this study was to determine the EARR prevalence within this ethnicity and investigate how patient and treatment-related factors contribute to root resorption. METHODS The records of 336 African Americans treated at the University of Alabama at Birmingham School of Dentistry Department of Orthodontics were retrospectively analyzed with Dolphin Imaging software. Pre-treatment and post-treatment panoramic radiographs were used to measure EARR. Resorption was recorded when final roots were at least 2 mm shorter after orthodontic treatment. Additionally, moderate and severe EARR was reported when 20% and 50% or more of the root structure was lost for any of the four maxillary incisors, respectively. The Pearson chi-square test was used to evaluate the associations of individual patient and treatment-related factors with EARR. RESULTS The prevalence of root resorption with 2 mm or greater of root structure loss was 51.8%. The prevalence of ≥ 20% EARR was 29.8%. Only one patient displayed severe resorption (0.3%). The associations between the patient-specific and treatment-specific variables and EARR were not statistically significant (P > .05). CONCLUSIONS More than half of the African American patients exhibit at least 2 mm of root resorption with orthodontic treatment. However, in this ethnicity, patient-related factors such as age, gender, dental malocclusion, and skeletal classifications, as well as treatment-related factors do not indicate a significant correlation with the risk of developing EARR.
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Affiliation(s)
- Frank E Litchfield
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Robert A Oster
- Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Chung How Kau
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ejvis Lamani
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL, United States
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Baghaei NN, Zhai G, Lamani E. Genetic and other factors contributing to external apical root resorption in orthodontic patients. Orthod Craniofac Res 2023; 26 Suppl 1:64-72. [PMID: 37526277 PMCID: PMC10830890 DOI: 10.1111/ocr.12701] [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: 11/24/2022] [Revised: 06/16/2023] [Accepted: 07/14/2023] [Indexed: 08/02/2023]
Abstract
OBJECTIVE External apical root resorption (EARR) is a multifactorial disorder with adverse clinical outcomes in orthodontic practices often resulting in significant root shortening. This study examined the effect that specific single nucleotide polymorphisms (SNPs) have on the risk of developing EARR in orthodontic patients in X. We also evaluated how other selected patient- and treatment-related factors may contribute to root resorption in these patients. SETTING/SAMPLE Patients included in this case-control study were treated at the University of Alabama at Birmingham School of Dentistry, Department of Orthodontics. METHODS Panoramic radiographs were used to measure root resorption of the maxillary incisors. EARR was recorded when at least 20% of the root length had been lost with orthodontic treatment. Factors evaluated for association with EARR included ethnicity, sex, age, dental and skeletal classifications, ANB, U1-SN, overjet, treatment type and time, and SNPs in IL-1A (rs1800587), IL-1B (rs1143634), IL-1RN (rs419598), P2RX7 (rs1718119 and rs2230912), IRAK1 (rs1059703) and CASP1 (rs530537, rs580253 and rs554344). Chi-square test, Student's t test, Wilcoxon test, Benjamin-Hochberg false discovery rate (FDR) adjustment and logistic regression were used to analyse the data. The significance level was defined as P < .05. RESULTS We found that extraction treatment protocol and dental classification displayed significant association with root resorption. Furthermore, the GG genotype of IL-1A rs1800587 variant (in individuals with an increased overjet) predisposed Caucasians to EARR. While CASP1 (rs530537) variant may contribute to the risk of root resorption, it was not statistically significant after FDR adjustment (P = .09). CONCLUSIONS Both patient- and treatment-related factors contributed to EARR.
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Affiliation(s)
- Nellie N. Baghaei
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Guihua Zhai
- Center for Clinical and Translational Science, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ejvis Lamani
- Department of Orthodontics, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Dawood HM, Kroeger A, Chavda V, Chapple ILC, Kebschull M. Under pressure-mechanisms and risk factors for orthodontically induced inflammatory root resorption: a systematic review. Eur J Orthod 2023; 45:612-626. [PMID: 37366151 PMCID: PMC10505745 DOI: 10.1093/ejo/cjad011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
BACKGROUND The application of orthodontic forces causes root resorption of variable severity with potentially severe clinical ramifications. OBJECTIVE To systematically review reports on the pathophysiological mechanisms of orthodontically induced inflammatory root resorption (OIIRR) and the associated risk factors based on in vitro, experimental, and in vivo studies. SEARCH METHODS We undertook an electronic search of four databases and a separate hand-search. SELECTION CRITERIA Studies reporting on the effect of orthodontic forces with/without the addition of potential risk factors on OIIRR, including (1) gene expression in in-vitro studies, the incidence root resorption in (2) animal studies, and (3) human studies. DATA COLLECTION AND ANALYSIS Potential hits underwent a two-step selection, data extraction, quality assessment, and systematic appraisal performed by duplicate examiners. RESULTS One hundred and eighteen articles met the eligibility criteria. Studies varied considerably in methodology, reporting of results, and variable risk of bias judgements.In summary, the variable evidence identified supports the notion that the application of orthodontic forces leads to (1) characteristic alterations of molecular expression profiles in vitro, (2) an increased rate of OIIRR in animal models, as well as (3) in human studies. Importantly, the additional presence of risk factors such as malocclusion, previous trauma, and medications like corticosteroids increased the severity of OIIRR, whilst other factors decreased its severity, including oral contraceptives, baicalin, and high caffeine. CONCLUSIONS Based on the systematically reviewed evidence, OIIRR seems to be an inevitable consequence of the application of orthodontic forces-with different risk factors modifying its severity. Our review has identified several molecular mechanisms that can help explain this link between orthodontic forces and OIIRR. Nevertheless, it must be noted that the available eligible literature was in part significantly confounded by bias and was characterized by substantial methodological heterogeneity, suggesting that the results of this systematic review should be interpreted with caution. REGISTRATION PROSPERO (CRD42021243431).
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Affiliation(s)
- Hassan M Dawood
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical & Dental Sciences, The University of Birmingham, Birmingham, UK
| | - Annika Kroeger
- Department of Oral Surgery, School of Dentistry, Institute of Clinical Sciences, College of Medical & Dental Sciences, The University of Birmingham, Birmingham, UK
- Birmingham Community Healthcare NHS Trust, Birmingham, UK
| | - Vinay Chavda
- Birmingham Community Healthcare NHS Trust, Birmingham, UK
| | - Iain L C Chapple
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical & Dental Sciences, The University of Birmingham, Birmingham, UK
- Birmingham Community Healthcare NHS Trust, Birmingham, UK
| | - Moritz Kebschull
- Periodontal Research Group, School of Dentistry, Institute of Clinical Sciences, College of Medical & Dental Sciences, The University of Birmingham, Birmingham, UK
- Birmingham Community Healthcare NHS Trust, Birmingham, UK
- Division of Periodontics, Section of Oral, Diagnostic and Rehabilitation Sciences, College of Dental Medicine, Columbia University, New York, NY, USA
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Jepsen K, Sculean A, Jepsen S. Complications and treatment errors involving periodontal tissues related to orthodontic therapy. Periodontol 2000 2023; 92:135-158. [PMID: 36920050 DOI: 10.1111/prd.12484] [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: 06/28/2022] [Revised: 10/25/2022] [Accepted: 01/04/2023] [Indexed: 03/16/2023]
Abstract
In this review, typical clinical complications involving periodontal tissues are illustrated that can be encountered in conjunction with orthodontic therapy (OT). Special considerations are given for various clinical scenarios, such as the patient presenting in periodontal health, with periodontitis, or with mucogingival conditions. While some of the complications are seen as common side effects of OT, other, more severe, problems that could have been avoided may be viewed as treatment errors. Recommendations are made on how to prevent these complications, based on the currently available evidence, on clinical practice guidelines, and on expert opinion. In conclusion, while there are several areas in which OT can have unwanted adverse effects on periodontal/mucogingival conditions, there is also great potential for synergies, offering opportunities for close cooperation between the two specialties (periodontics and orthodontics) for the benefit of patients affected by tooth malpositioning and/or periodontal or mucogingival problems.
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Affiliation(s)
- Karin Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
| | - Anton Sculean
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Søren Jepsen
- Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany
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Marañón-Vásquez G, Küchler EC, Hermann S, Paddenberg E, Schröder A, Baratto-Filho F, Flores-Mir C, Proff P, Kirschneck C. Association between genetic variants in key vitamin-D-pathway genes and external apical root resorption linked to orthodontic treatment. Eur J Oral Sci 2023; 131:e12916. [PMID: 36683003 DOI: 10.1111/eos.12916] [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: 05/24/2022] [Accepted: 12/31/2022] [Indexed: 01/24/2023]
Abstract
This study evaluated the association between single-nucleotide polymorphisms (SNPs) in vitamin-D-related genes and the amount of external apical root resorption linked to orthodontic treatment. One hundred and forty-three individuals were assessed. The amount of external apical root resorption of upper central incisors (EARRinc ) and lower first molars (EARRmol ) were evaluated in radiographs. Seven SNPs were genotyped across four genes including the vitamin D receptor [VDR], group-specific component [GC], cytochrome P450 family 27 subfamily B member 1 [CYP27B1], and cytochrome P450 family 24 subfamily A member 1 [CYP24A1]. Linear regressions were implemented to determine allele-effects on external apical root resorption. Individuals carrying the AA genotype in VDR rs2228570 had a 21% higher EARRmol than those having AG and GG genotypes (95% CI: 1.03,1.40). EARRmol in heterozygous rs2228570, was 12% lower than for homozygotes (95%CI: 0.78,0.99). Participants with the CCG haplotype (rs1544410-rs7975232-rs731236) in VDR had an EARRmol 16% lower than those who did not carry this haplotype. Regarding CYP27B1 rs4646536, EARRinc in participants who had at least one G allele was 42% lower than for homozygotes AA (95%CI: 0.37,0.93). Although these results did not remain significant after multiple testing adjustment, potential associations may still be suggested. Further replication studies are needed to confirm or refute these findings.
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Affiliation(s)
- G Marañón-Vásquez
- Department of Pediatric Dentistry, and Orthodontics, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - E C Küchler
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - S Hermann
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - E Paddenberg
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - A Schröder
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - F Baratto-Filho
- Department of Dentistry, School of Dentistry, Univille - University of the Joinville Region, Joinville, Santa Catarina, Brazil
| | - C Flores-Mir
- Division of Orthodontics, School of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - P Proff
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - C Kirschneck
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
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Lee YJ, Pak H, Hwang CJ, Choi YJ, Lee JH, Lee JH, Cha JY. Targeted next-generation sequencing for comprehensive genetic analysis of external apical root resorption during orthodontic treatment with premolar extraction in the Korean population. Am J Orthod Dentofacial Orthop 2022; 162:668-679.e5. [PMID: 35965166 DOI: 10.1016/j.ajodo.2021.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION External apical root resorption (EARR) is one of the most common unfavorable consequences of orthodontic treatment and causes loss of tooth structure. The present study aimed to investigate the genetics of EARR using next-generation sequencing comprehensively. METHODS Targeted next-generation sequencing was performed for comprehensive genetic analysis of 118 Korean orthodontic patients. The patients were divided into 2 groups on the basis of their EARR value. The association of clinical and genetic parameters with EARR was assessed using the χ2 test or t test for matched pairs, followed by Bonferroni correction and linear regression analysis. In addition, haplotype analysis and in silico prediction were conducted to evaluate functional effects. RESULTS No statistically significant difference was observed between clinical and treatment-related parameters and EARR. The single nucleotide polymorphisms SPP1 rs9138 (P = 0.001) and SFRP2 rs3810765 (P = 0.04) showed only nominal significance between EARR groups. However, these 2 SNPs were not significant after Bonferroni correction for multiple testing (cutoff P = 0.05/142 = 3.52 × 10-4). Variations in SPP1 rs9138 and SFRP2 rs3810765 may be related to EARR during orthodontic treatment. In summary, not only genes related to inflammatory reactions but also those related to Wnt signaling to affect the degree of EARR during orthodontic teeth movement.
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Affiliation(s)
- Yun-Ju Lee
- Department of Orthodontics, Yonsei University College of Dentistry, Seodaemoon-gu, Seoul, South Korea
| | - Hayeon Pak
- Department of Biomedical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Dongdaemoon-gu, Seoul, South Korea
| | - Chung-Ju Hwang
- Department of Orthodontics, Yonsei University College of Dentistry, Seodaemoon-gu, Seoul, South Korea
| | - Yoon Jeong Choi
- Department of Orthodontics, Yonsei University College of Dentistry, Seodaemoon-gu, Seoul, South Korea
| | - Jae-Hoon Lee
- Department of Prosthodontics, Yonsei University College of Dentistry, Seodaemoon-gu, Seoul, South Korea
| | - Ji Hyun Lee
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, and Department of Biomedical Science and Technology, Kyung Hee Medical Science Research Institute, and Department of Biomedical and Pharmaceutical Sciences, Kyung Hee University, Dongdaemun-gu, Seoul, South Korea.
| | - Jung-Yul Cha
- Department of Orthodontics, Yonsei University College of Dentistry, Seodaemoon-gu, Seoul, South Korea.
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Immune System Acts on Orthodontic Tooth Movement: Cellular and Molecular Mechanisms. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9668610. [PMID: 36330460 PMCID: PMC9626206 DOI: 10.1155/2022/9668610] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 12/03/2022]
Abstract
Orthodontic tooth movement (OTM) is a tissue remodeling process based on orthodontic force loading. Compressed periodontal tissues have a complicated aseptic inflammatory cascade, which are considered the initial factor of alveolar bone remodeling. Since skeletal and immune systems shared a wide variety of molecules, osteoimmunology has been generally accepted as an interdisciplinary field to investigate their interactions. Unsurprisingly, OTM is considered a good mirror of osteoimmunology since it involves immune reaction and bone remolding. In fact, besides bone remodeling, OTM involves cementum resorption, soft tissue remodeling, orthodontic pain, and relapse, all correlated with immune cells and/or immunologically active substance. The aim of this paper is to review the interaction of immune system with orthodontic tooth movement, which helps gain insights into mechanisms of OTM and search novel method to short treatment period and control complications.
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Silva HC, Lavado N, Canova F, Lopez MG, Regateiro FJ, Pereira SA. Influence of clinical factors on the protective or deleterious impact of genetic variants in orthodontically induced external root resorption: an observational study. BMC Oral Health 2022; 22:270. [PMID: 35787289 PMCID: PMC9254450 DOI: 10.1186/s12903-022-02306-y] [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: 02/20/2022] [Accepted: 06/13/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Prediction of susceptibility to Orthodontically Induced External Apical Root Resorption (OIEARR) has been hampered by the complex architecture of this multifactorial phenotype. The aim of this study was to analyze the impact of the interaction of multiple variables in the susceptibility to OIEARR. METHODS The study evaluated 195 patients requiring orthodontic treatment. Nine clinical and treatment variables, single nucleotide polymorphisms (SNPs) from five genes and variables interactions were analyzed as risk factors for OIEARR using a multiple linear regression model. RESULTS The model explained 29% of OIEARR variability (ANOVA: p < 0.01). Duration of treatment was the most important predictor and gender was the second, closely followed by premolar extraction. For genes encoding osteoprotegerin (OPG), the receptor activator of nuclear factor κ B (RANK) and the IL1 receptor antagonist (IL1RN), the effect of analyzed variants changed from protective to deleterious depending on the duration of treatment and the age of the patient. CONCLUSIONS This work shows that in OIEARR the impact of genetic susceptibility factors is dynamic changing according to clinical variables.
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Affiliation(s)
- Henriqueta Coimbra Silva
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal. .,Institute of Medical Genetics/UCGenomics, Faculty of Medicine, University of Coimbra, Pólo 3. Subunidade 1, 3º andar, gab 77. Azinhaga de Sta Comba, Celas, 3000-548, Coimbra, Portugal.
| | - Nuno Lavado
- Polytechnic of Coimbra, Institute of Engineering of Coimbra - ISEC, Coimbra, Portugal
| | - Filomena Canova
- Polytechnic of Coimbra, Institute of Engineering of Coimbra - ISEC, Coimbra, Portugal
| | - Miguel Guevara Lopez
- Department of Computing and Systems, Setúbal School of Technology, Polytechnic Institute of Setúbal, Campus de Estefanilha, Setúbal, Portugal
| | - Fernando J Regateiro
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Institute of Medical Genetics/UCGenomics, Faculty of Medicine, University of Coimbra, Pólo 3. Subunidade 1, 3º andar, gab 77. Azinhaga de Sta Comba, Celas, 3000-548, Coimbra, Portugal
| | - Sónia A Pereira
- Institute of Orthodontics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Heboyan A, Avetisyan A, Karobari MI, Marya A, Khurshid Z, Rokaya D, Zafar MS, Fernandes GVDO. Tooth root resorption: A review. Sci Prog 2022; 105:368504221109217. [PMID: 35759366 PMCID: PMC10358711 DOI: 10.1177/00368504221109217] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Tooth root resorption is multifactorial, leading to progressive destruction and eventual loss of tooth root dentin and cement. There are internal and external types of root resorption, each having its variety. The etiology and pathogenesis of tooth root resorption are poorly understood, and the most significant etiological factors are trauma, pulpal infection, tooth bleaching, and orthodontic treatment. Tooth root resorption is primarily asymptomatic; thus, it is revealed accidentally by radiographic examination. Progressive clinical manifestations are pain, tooth discoloration, tooth mobility, and other conditions. Awareness of the causes and risk factors allowing tooth root resorption, and regular radiographic examination, in case of necessity, make it possible to reveal resorption at an early stage and to prevent its further development. Thus, the aim of this study is to present etiopathogenesis, a clinical course, and diagnostic peculiarities of internal and external types of tooth root resorption, enabling practicing dentists to timely diagnose root resorption and take appropriate measures to avoid further complications. Within the limitation of this review, even though the etiopathogenesis of tooth root resorption is yet not fully understood, it is suggested that the etiological factors fall into two groups (endogenic and exogenic) to enhance further understanding of the possible causes and mechanisms of root resorption and allow practitioners to monitor high-risk patients and make timely diagnoses. Moreover, radiographic examination and CBCT are indispensable for the diagnosis of root resorption.
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Affiliation(s)
- Artak Heboyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Anna Avetisyan
- Department of Therapeutic Stomatology, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
| | - Mohmed Isaqali Karobari
- Department of Conservative & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, Cambodia
- Center for Transdisciplinary Research (CFTR), Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences University, Chennai, Tamil Nadu, India
| | - Anand Marya
- Department of Orthodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, Cambodia
| | - Zohaib Khurshid
- Department of Prosthodontics and Implantology, College of Dentistry, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
| | - Dinesh Rokaya
- Department of Clinical Dentistry, Walailak University International College of Dentistry, Walailak University, Bangkok, Thailand
| | - Muhammad Sohail Zafar
- Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah, Saudi Arabia
- Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad, Pakistan
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Sameshima GT, Iglesias-Linares A. Orthodontic root resorption. J World Fed Orthod 2021; 10:135-143. [PMID: 34785166 DOI: 10.1016/j.ejwf.2021.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 11/16/2022]
Abstract
External apical root resorption (EARR) is one of the most frequently reported iatrogenic side effects of orthodontic movement. Nevertheless, no robust and unequivocal scientific evidence is yet available in the literature regarding the clinical and biological factors that trigger EARR. The purpose of the present position paper is to provide clinicians, residents, and investigators a summary of our current understanding about root resorption caused by orthodontic tooth movement, based on up-to-date available scientific evidence. Morphological, structural, biomechanical, and biological differences account for predisposing the apical third to EARR compared to other root surfaces during orthodontic treatment. In addition, a relevant number of patient and treatment-related factors increase risk of EARR. The main patient-related factors are reviewed and discussed: genetic factors, tooth anatomy, demographic factors, malocclusion factors, previous endodontic treatment, medical history, short root anomaly. Similarly, the influence of treatment-related factors are analyzed with regard to the effect of: biomechanical factors, type of orthodontic appliance, adjunctive therapies to accelerate tooth movement, early treatment, maxillary expansion, teeth extractions, the duration of treatment and the amount of apical displacement. Clinical management of EARR from pre-treatment records to the monitoring strategy as well as recommendations for the post orthodontic-treatment period are presented as a guide for the clinician. Despite years of studies, we still do not fully understand EARR, but the future is promising. True three-dimensional imaging with higher resolution and low radiation, and predictive tools towards an earlier detection without radiographs, will mark future developments in the field of EARR in orthodontics.
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Affiliation(s)
- Glenn T Sameshima
- Advanced Orthodontics, Herman Ostrow School of Dentistry of University of Southern California (USC), Los Angeles, California, USA.
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Association between Polymorphisms in the IL-1β, TNFRSF11B, CASP1, and IL-6 Genes and Orthodontic-Induced External Apical Root Resorption. J Clin Med 2021; 10:jcm10184166. [PMID: 34575287 PMCID: PMC8469359 DOI: 10.3390/jcm10184166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/08/2021] [Accepted: 09/13/2021] [Indexed: 11/21/2022] Open
Abstract
Orthodontic-induced external apical root resorption (EARR) is a severe condition affecting the roots of the teeth, whose genetic causes have been inconclusive to date. The aim of the present study was to assess the influence of selected single nucleotide polymorphisms (SNPs) IL-1β, TNFRSF11B, CASP1, and IL-6 genes on post-orthodontic EARR. A sample of 101 patients with clearly assessable orthopantomograms and lateral cephalometric radiographs taken before and at the end of the orthodontic treatment was used to evaluate the presence of EARR. The association between genetic polymorphisms and EARR was assessed with the Chi2 test. A binary logistic multi-level model was built to evaluate the ability of patient- and tooth-level variables to predict EARR occurrence. The overall prevalence of EARR resulted to be around 40%. Within the limitations of this study, a significant association was found between EARR presence and the SNP for the IL-1β gene but not for the TNFRSF11B, CASP1, and the IL-6 genes. The final multi-level model demonstrated that the SNP for the IL-1β gene increases the odds of developing EARR by around four times. Since there is currently no accurate method to determine which patients will develop EARR prior to orthodontic treatment, further studies are needed to investigate the predictive ability of further genetic variants on EARR development.
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Liu W, Shao J, Li S, Al-Balaa M, Xia L, Li H, Hua X. Volumetric cone-beam computed tomography evaluation and risk factor analysis of external apical root resorption with clear aligner therapy. Angle Orthod 2021; 91:597-603. [PMID: 33826698 DOI: 10.2319/111820-943.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 02/01/2021] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To investigate the prevalence and severity of external apical root resorption (EARR) volumetrically with clear aligner therapy using cone-beam computed tomography (CBCT) as well as determine the possible risk factors and develop a prediction model for EARR. MATERIALS AND METHODS In this retrospective study, 320 incisors from 40 Class II patients treated with aligners (Invisalign) were included in this study. CBCT images were obtained at pretreatment (T0) and posttreatment (T1). Root volume was calculated by three-dimensional reconstruction of CBCT images, and apical tooth movement was measured from superimposed CBCT images. Changes in root volume were compared using paired t-tests, and the relationship between root volume loss and potential risk factors was analyzed by multiple linear regression. RESULTS All of the measured incisors showed root volume loss, with an average of 11.48 ± 6.70 mm3, and the prevalence of severe resorption was 0.625%. The prediction model for EARR included variables of posttreatment sagittal root position (SRP), extraction, tooth type, and apical intrusion and extrusion displacements, with an R2 of 0.51. Age, sex, duration, pretreatment SRP, attachment, advancement, and retraction movements were excluded from the model. CONCLUSIONS Most incisors showed mild to moderate resorption during aligner treatment; only a minimal percentage showed severe resorption. Posttreatment SRP (which showed the highest association with EARR), extraction, tooth type, and apical intrusion and extrusion displacements were risk factors for EARR.
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Genetic variation involved in the risk to external apical root resorption in orthodontic patients: a systematic review. Clin Oral Investig 2021; 25:5613-5627. [PMID: 34392402 DOI: 10.1007/s00784-021-04074-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 07/08/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To perform a systematic review/meta-analysis to elucidate the scientific basis for the association between genetic variations and risk of external apical root resorption (EARR) in orthodontic patients. MATERIALS AND METHODS Four databases (PubMed, Web of Science, Scopus, LILACS) were electronically searched until November 22, 2020, followed by manual and gray literature search. Case-control or cross-sectional studies that evaluated genes involved in the susceptibility of orthodontic patients to EARR were eligible. Two reviewers applied the inclusion and exclusion criteria, extracted qualitative data, as well as assessed methodological quality using instrument proposed for genetic studies. For synthesis results, narrative and quantitative data (meta-analysis) were performed. The certainty of the evidence was tested using the GRADE Working Group approach. RESULTS Of 201 articles in total, 16 studies were included in the review. Of these, 11 presented moderate and 5 of high methodological quality. In the narrative analysis, from 16 studies, 15 studies (10 genes) showed a significant association with EARR and 9 studies were included in the meta-analysis. Only the polymorphism rs208294 in P2RX7 (dominant model) was associated with EARR (OR = 0.52, 95%CI = 0.29-0.95, p = 0.03) and presented a very low certainty of the evidence. CONCLUSION Narrative analyses of individual studies demonstrated an association of many genes. The number of studies for each genetic variation was very low, and methodological heterogeneity between the studies was observed. Quantitative analyses (meta-analysis) could only show an involvement for P2RX7 (rs208294) in the risk of orthodontic patients to EARR at a very low certainty of evidence. (CRD42018085411). CLINICAL RELEVANCE The knowledge regarding the molecular aspects involved in the etiology of EARR will allow orthodontists to use a personalized treatment and early diagnosis of risk patients. This systematic review demonstrates that more studies are necessary to unravel the role of genetic variation for patients' risk to EARR during orthodontic tooth movement.
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Bayir F, Bolat Gumus E. External apical root resorption after orthodontic treatment: Incidence, severity and risk factors. J Dent Res Dent Clin Dent Prospects 2021; 15:100-105. [PMID: 34386180 PMCID: PMC8346714 DOI: 10.34172/joddd.2021.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 01/06/2021] [Indexed: 01/17/2023] Open
Abstract
Background. This study aimed to evaluate the incidence and severity of orthodontically induced inflammatory external apical root resorption (OIIEARR) and the relationship between OIIEARR and possible risk factors such as orthodontic treatment type, treatment duration, gender, and age of the patients. A further aim was to determine the prevalence of OIIEARR in different tooth groups. Methods. The study sample consisted of 1356 orthodontically treated patients (857 females and 498 males; mean age: 14.4±2.8 years). OIIEARR was evaluated using pre- and post-treatment panoramic radiographs for all the tooth groups. Teeth with severe resorption were also assessed. Patient- and treatment-related risk factors for OIIEARR were assessed statistically using Pearson’s chi-squared test, independent-samples t test, and one-way ANOVA. Results. The incidence of severe root resorption following orthodontic treatment was 14.8%. Males exhibited a higher incidence of root resorption compared to females. Orthodontic treatment duration and treatment with extractions were positively correlated with OIIEARR (P < 0.05). OIIEARR was observed most frequently in maxillary incisors, followed by mandibular incisors. Conclusion. Orthodontic treatment with extraction, prolonged treatment duration, and large movements of the incisors should especially be taken into consideration for OIIEARR risk. Routine radiographic follow-up during orthodontic treatment is recommended.
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Affiliation(s)
- Fatih Bayir
- Orthodontist; Private Practice, Antalya, Turkey
| | - Esra Bolat Gumus
- Department of Orthodontics, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
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Evaluation of apical root resorption occurrence in orthodontic patients treated with fixed braces depending on selected clinical parameters. CURRENT ISSUES IN PHARMACY AND MEDICAL SCIENCES 2021. [DOI: 10.2478/cipms-2021-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
An aim of the work was analysis of the possible connections between the selected clinical parameters and external apical root resorption (EARR) in patients after orthodontic treatment.
The study comprised 101 persons, who underwent complex orthodontic treatment with the use of fixed braces (straight-arch technique).
The teeth chosen for measurement of resorption level were central and lateral incisors of mandible and maxilla, as well as maxillary first molars, which are the most susceptible to root resorption. The roots were measured on the basis of the dental radiographs taken before and at the end of treatment. The measurements were made on digital radiographs with the use of diagnostic software (Planmeca Romexis® Viewer), which allows the image filters ensure the highest precision when localizing roots end points. Proportional measurements of the chosen teeth were made with the use of Linge’s method and Linge’s method modified by Brezniak et al. For further analysis, the persons taking part in the study were divided into two groups depending on the presence of postorthodontic EARR or its lack, resulting from radiographic measurements: a control group comprising 61 patients without EARR (with 0.90 ≤ rRCR ≤ 1.00) and a study group including 40 patients with EARR (rRCR < 0.90). In statistical analysis there was used verification of statistical hypotheses based on the following tests: Pearson’s chi-squared test, Student’s t-test, Mann-Whitney U test.
On the basis of the made analyses and achieved results, it was found out that age, sex, type of skeletal malocclusion, increased overjet and overbite do not constitute risk factors for EARR occurrence. Excessive proclination of central and lateral incisors of mandible and maxilla predisposes to shortening the roots of these teeth during orthodontic treatment with fixed braces (p < 0.01).
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Ciurla A, Szymańska J, Płachno BJ, Bogucka-Kocka A. Polymorphisms of Encoding Genes IL1RN and P2RX7 in Apical Root Resorption in Patients after Orthodontic Treatment. Int J Mol Sci 2021; 22:ijms22020777. [PMID: 33466672 PMCID: PMC7828778 DOI: 10.3390/ijms22020777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 12/31/2022] Open
Abstract
External apical root resorption (EARR) is one of the most serious complications associated with orthodontic treatment. The aim of the study was to analyze the relationships between selected single nucleotide polymorphisms (SNPs) in Interleukin 1 receptor antagonist (IL1RN), purinoreceptor P2X7 (P2RX7) and EARR in patients after orthodontic treatment. The study comprised 101 patients who underwent a complex orthodontic treatment with a combination of fixed appliances. Roots were measured based on orthopantomograms and lateral cephalometric radiographs taken before and at the end of the treatment using diagnostic software. Proportional measurements of selected teeth were made using the modified Linge and Linge methods. Based on the presence or absence of EARR, patients were divided into two groups: control group, 61 patients without EARR (with 0.90 ≤ rRCR ≤ 1.00), and EARR group, 40 patients with EARR (rRCR < 0.90). Root resorption in selected groups was also evaluated with the scores of Malmgren and Levander. SNP analysis was performed using the real-time polymerase chain reaction (PCR) method. The analysis indicated that a specific haplotype of P2RX7 (rs208294) and IL1RN (rs419598) modified the risk of EARR development (p < 0.05), with a Bonferroni correction. The analysis of the P2RX7 and IL1RN gene polymorphisms showed that the presence of SNPs of these genes may predispose individuals to EARR. These findings indicate that EARR is a complex condition influenced not only by environmental factors and needs further study on the genetic risk factors.
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Affiliation(s)
- Agata Ciurla
- Dentist’s Office ORTO-PUNKT, Mościckiego St. 72/1, 33-100 Tarnów, Poland;
| | - Jolanta Szymańska
- Department of Integrated Pediatric Dentistry, Chair of Integrated Dentistry, Medical University of Lublin, 20-059 Lublin, Poland
- Correspondence:
| | - Bartosz J. Płachno
- Department of Plant Cytology and Embryology, Institute of Botany, Faculty of Biology, Jagiellonian University in Kraków, 9 Gronostajowa St., 30-387 Cracow, Poland;
| | - Anna Bogucka-Kocka
- Department of Biology and Genetics, Medical University of Lublin, 4a Chodźki St., 20-093 Lublin, Poland;
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Nowrin SA, Jaafar S, Rahman NA, Shahid F, Basri R, Alam MK. External Apical Root Resorption and IL-1A, IL-1RN Gene Polymorphisms: A Systematic Review and Meta-Analysis of Prospective Studies. PESQUISA BRASILEIRA EM ODONTOPEDIATRIA E CLÍNICA INTEGRADA 2021. [DOI: 10.1590/pboci.2021.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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DALAIE K, BADIEE M, BEHNAZ M, KAVOUSINEJAD S. Effect of orthodontic forces on root length of immature mandibular second premolars: a split-mouth randomized clinical trial. Dental Press J Orthod 2021; 26:e2119355. [PMID: 35640080 PMCID: PMC8576854 DOI: 10.1590/2177-6709.26.5.e2119355.oar] [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: 02/06/2020] [Accepted: 07/29/2020] [Indexed: 11/22/2022] Open
Abstract
Objective: To assess the effect of orthodontic forces on changes in root length of immature mandibular second premolars. Methods: Sixty-four mandibular second premolars (MSP) with immature apices (left and right sides) of 32 patients aged between 10 and 13 years were evaluated. Orthodontic treatment was started after obtaining periapical radiographs (T1) from the MSPs of each patient. Brackets were bonded, except the ones of MSPs (left or right by random as control MSP, and the other side as test MSP). After 9-12 months, a second periapical radiograph (T2) was obtained from the MSPs of each patient. Then, brackets were bonded to the control MSPs, which were not bonded before. After 18 ± 3 months, a third periapical radiograph (T3) was obtained. Changes in root length were evaluated by using a new formula. The test and control MSPs at T1, T2 and T3 were compared using repeated measures ANOVA and parametric tests. P-value smaller than 0.05 was statistically significant. Results: There was no significant difference between the test and control groups in the mean root length of MSP at T1 (p= 0.48) and T3 (p= 0.078). The root length at T2 (p= 0.001) was significantly different between test and control MSPs, and the test group showed longer root length than the control group. Conclusions: Orthodontic force applied for leveling and alignment of immature MSPs may not have destructive effects on the roots, and may accelerates root formation in short-term. Normal root length was achieved at the end of root development.
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Affiliation(s)
- Kazem DALAIE
- Shahid Beheshti University of Medical Sciences, Iran
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21
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Behnaz M, Jazaeri M, Aghandeh P, Taheri M, Ghafouri-Fard S. Genetic factors in determination of risk of external apical root resorption: A concise review. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Kalra S, Gupta P, Tripathi T, Rai P. External apical root resorption in orthodontic patients: molecular and genetic basis. J Family Med Prim Care 2020; 9:3872-3882. [PMID: 33110782 PMCID: PMC7586589 DOI: 10.4103/jfmpc.jfmpc_802_20] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/11/2020] [Accepted: 07/11/2020] [Indexed: 01/08/2023] Open
Abstract
External apical root resorption is one of the most deleterious complications after orthodontic treatment. Studies to explain the causal relationship between orthodontic tooth movement and external apical root resorption have been inconclusive till date. Individual variations in external apical root resorption sometimes overshadow the treatment related factors which indicate genetic predisposition and/or multifactorial etiology. Mechanism of root resorption is not completely understood. Inflammatory root resorption induced by orthodontic treatment is a part of process of elimination of hyaline zone. An imbalance between bone resorption and deposition may contribute to root resorption by the cementoclasts/osteoclasts. This narrative review article explains the molecular pathway involved in external apical root resorption and also role of various genes involved at different level. It also reviews the literature published during the past 20 years concerning the association studies linking EARR to genetic polymorphisms. This literature review provides an insight into genetic predisposition of external apical root resorption that can be used in orthodontic practice to enable 'high-risk' subjects to be identified on the basis of their genetic information before orthodontic treatment is initiated.
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Affiliation(s)
- Shilpa Kalra
- Department of Orthodontics and Dentofacial Orthopaedics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Prateek Gupta
- Department of Orthodontics and Dentofacial Orthopaedics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Tulika Tripathi
- Department of Orthodontics and Dentofacial Orthopaedics, Maulana Azad Institute of Dental Sciences, New Delhi, India
| | - Priyank Rai
- Department of Orthodontics and Dentofacial Orthopaedics, Maulana Azad Institute of Dental Sciences, New Delhi, India
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GWAS of Post-Orthodontic Aggressive External Apical Root Resorption Identified Multiple Putative Loci at X-Y Chromosomes. J Pers Med 2020; 10:jpm10040169. [PMID: 33066413 PMCID: PMC7712155 DOI: 10.3390/jpm10040169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 12/23/2022] Open
Abstract
Personalized dental medicine requires from precise and customized genomic diagnostic. To conduct an association analysis over multiple putative loci and genes located at chromosomes 2, 4, 8, 12, 18, X, and Y, potentially implicated in an extreme type of external apical root resorption secondary to orthodontic forces (aEARR). A genome-wide association study of aEARR was conducted with 480 patients [ratio~1:3 case/control]. Genomic DNA was extracted and analyzed using the high-throughput Axiom platform with the GeneTitan® MC Instrument. Up to 14,377 single nucleotide polymorphisms (SNPs) were selected at candidate regions and clinical/diagnostic data were recorded. A descriptive analysis of the data along with a backward conditional binary logistic regression was used to calculate odds ratios, with 95% confidence intervals [p < 0.05]. To select the best SNP candidates, a logistic regression model was fitted assuming a log-additive genetic model using R software [p < 0.0001]. In this sample the top lead genetic variants associated with aEARR were two novel putative genes located in the X chromosome, specifically, STAG 2 gene, rs151184635 and RP1-30E17.2 gene, rs55839915. These variants were found to be associated with an increased risk of aEARR, particularly restricted to men [OR: 6.09; 95%CI: 2.6–14.23 and OR: 6.86; 95%CI: 2.65–17.81, respectively]. Marginal associations were found at previously studied variants such as SSP1: rs11730582 [OR: 0.54; 95%CI: 0.34–0.86; p = 0.008], P2RX7: rs1718119 [OR: 0.6; 95%CI: 0.36–1.01; p = 0.047], and TNFRSF11A: rs8086340 [OR: 0.6; 95%CI: 0.38–0.95; p = 0.024]), found solely in females. Multiple putative genetic variants located at chromosomes X and Y are potentially implicated in an extreme phenotype of aEARR. A gender-linked association was noted.
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Behnaz M, Mohammad-Rahimi H, Javaheri F, Omrani MD, Noroozi R, Taheri M, Ghafouri-Fard S. The rs1143634 of IL-1β gene is associated with external apical root resorption in Iranian population. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Ebersole J, Samburova V, Son Y, Cappelli D, Demopoulos C, Capurro A, Pinto A, Chrzan B, Kingsley K, Howard K, Clark N, Khlystov A. Harmful chemicals emitted from electronic cigarettes and potential deleterious effects in the oral cavity. Tob Induc Dis 2020; 18:41. [PMID: 32435175 PMCID: PMC7233525 DOI: 10.18332/tid/116988] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/20/2019] [Accepted: 01/22/2020] [Indexed: 12/29/2022] Open
Abstract
Use of electronic nicotine delivery systems (ENDS), such as electronic cigarettes (e-cigs), is increasing across the US population and is particularly troubling due to their adoption by adolescents, teens, and young adults. The industry’s marketing approach for these instruments of addiction has been to promote them as a safer alternative to tobacco, a behavioral choice supporting smoking cessation, and as the ‘cool’ appearance of vaping with flavored products (e.g. tutti frutti, bubble gum, and buttered popcorn etc.). Thus, there is a clear need to better document the health outcomes of e-cig use in the oral cavity of the addicted chronic user. There appears to be an array of environmental toxins in the vapors, including reactive aldehydes and carbonyls resulting from the heating elements action on fluid components, as well as from the composition of chemical flavoring agents. The chemistry of these systems shows that the released vapors from the e-cigs frequently contain levels of environmental toxins that considerably exceed federal occupational exposure limits. Additionally, the toxicants in the vapors appear to be retained in the host fluids/tissues at levels often approximating 90% of the levels in the e-cig vapors. These water-soluble reactive toxins can challenge the oral cavity constituents, potentially contributing to alterations in the autochthonous microbiome and host cells critical for maintaining oral homeostasis. This review updates the existing chemistry/environmental aspects of e-cigs, as well as providing an overview of the somewhat limited data on potential oral health effects that could occur across the lifetime of daily e-cig users.
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Affiliation(s)
- Jeffrey Ebersole
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Vera Samburova
- Organic Analytical Laboratory, Division of Atmospheric Sciences, Desert Research Institute, Reno, United States
| | - Yeongkwon Son
- Organic Analytical Laboratory, Division of Atmospheric Sciences, Desert Research Institute, Reno, United States
| | - David Cappelli
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Christina Demopoulos
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Antonina Capurro
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Andres Pinto
- Oral and Maxillofacial Medicine and Diagnostic Sciences, School of Dental Medicine, Case Western University, Cleveland, United States
| | - Brian Chrzan
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Karl Kingsley
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Katherine Howard
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Nathaniel Clark
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
| | - Andrey Khlystov
- Department of Biomedical Sciences, School of Dental Medicine, University of Nevada Las Vegas, Las Vegas, United States
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AlSheikh HA, AlZain S, Shaik JP, Bhogoju S, Warsy A, Reddy Parine N. Two novel SNPs in genes involved in immune response and their association with mandibular residual ridge resorption. Saudi J Biol Sci 2020; 27:846-852. [PMID: 32127761 PMCID: PMC7042620 DOI: 10.1016/j.sjbs.2020.01.016] [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: 09/25/2019] [Revised: 01/01/2020] [Accepted: 01/07/2020] [Indexed: 12/28/2022] Open
Abstract
“Residual ridge resorption” (RRR) is a multifactorial condition involving bone resorption of the residual ridge. We investigated 10 single nucleotide polymorphisms (SNPs) in seven genes with the aim of identifying the genetic factors associated with RRR susceptibility. The study group included 96 RRR patients and 96 controls. Age at first edentulism, duration of edentulism, and bone height were recorded. Saliva was collected from the subjects for DNA extraction. Genotype analysis was performed on the ‘SequenomMassARRAYiPLEX’. The genotype and allele frequencies calculated in patients and controls were compared. We found that rs1800896 in the IL10 gene and rs5743289 in NOD2 gene showed significant association with RRR. Within the RRR group, genotypes for each SNP were separated, and we observed that the age at first edentulism and bone height showed variations in the different genotypes of the ten studied SNPs. This study showed an association between SNPs in IL10 and NOD2 genes. It also revealed that the genotypes of the different SNPs influence bone resorption and health. Additionally, age at first edentulism and bone height were much lower in some genotypes. This study demonstrates the need for larger multicenter trials to confirm these findings. Finally, we suggest that the results of this study may be utilized for developing novel genetic diagnostic tests and for identifying Saudi individuals who may be more susceptible to RRR development following dental extraction.
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Affiliation(s)
- Hana Al AlSheikh
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Sahar AlZain
- Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Jilani P Shaik
- Genome Research Chair, Dept. of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sarayu Bhogoju
- Department of Chemical Engineering, University of Alabama, Huntsville, AL, USA
| | - Arjumand Warsy
- Central Laboratory & Prince Naif Health Research Center, Center for Science and Medical Studies for Girls, King Saud University, Riyadh, Saudi Arabia
| | - Narasimha Reddy Parine
- Genome Research Chair, Dept. of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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Maxillary incisor root morphology in patients with nonsyndromic tooth agenesis: A controlled cross-sectional pilot study. Am J Orthod Dentofacial Orthop 2020; 157:212-217. [PMID: 32005473 DOI: 10.1016/j.ajodo.2019.03.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 03/01/2019] [Accepted: 03/01/2019] [Indexed: 11/21/2022]
Abstract
INTRODUCTION This study aimed to investigate the association between root morphology of maxillary incisors and nonsyndromic tooth agenesis in patients compared with a control group without agenesis. METHODS This controlled cross-sectional pilot study (1:4) was performed with a random sample of 335 records from Brazilian applicants for orthodontic treatment, paired by sex and age. Panoramic and periapical radiographs were analyzed to diagnose tooth agenesis and to assess root morphology. The agenesis group (n = 67) included patients with nonsyndromic tooth agenesis, and the control group (n = 268) included patients without tooth agenesis. The statistical analysis included the Student t test and z test, conditional logistic regression, and odds ratio estimates. RESULTS Occurrence of root morphological changes was significantly higher among patients with agenesis (P <0.05). Significant morphological changes (short, blunt, apically bent, and pipette-shaped roots) were found in the roots of remaining teeth when comparing agenesis and control groups (P <0.05). Patients with agenesis were more likely to show root morphological changes (odds ratio, 74.23; 95% confidence interval, 16.93-325.46; P <0.001). CONCLUSION Patients with agenesis are more likely to present root morphological changes, which should be considered to minimize problems during orthodontic treatments.
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Fernandes LQP, Figueiredo NC, Montalvany Antonucci CC, Lages EMB, Andrade I, Capelli Junior J. Predisposing factors for external apical root resorption associated with orthodontic treatment. Korean J Orthod 2019; 49:310-318. [PMID: 31598487 PMCID: PMC6769259 DOI: 10.4041/kjod.2019.49.5.310] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/05/2019] [Accepted: 05/24/2019] [Indexed: 11/10/2022] Open
Abstract
Objective This study aimed to identify possible risk factors for external apical root resorption (EARR) in the maxillary incisors after orthodontic treatment. Methods The root length of 2,173 maxillary incisors was measured on periapical radiographs of 564 patients who received orthodontic treatment. The Kappa test was performed to evaluate intraexaminer and interexaminer reproducibility. Multiple binary logistic regression was used to determine the association between EARR and various factors. Odds ratios and 95% confidence intervals were reported. Results The risk of developing EARR was 70% higher in orthodontic treatment with maxillary premolar extraction (p = 0.004), 58% higher in patients with increased overjet (p = 0.012), 41% lower in two-phase orthodontic treatment (p = 0.037), and 33% lower in patients with deep bite (p = 0.039). The lateral incisors were 54% more likely to develop EARR (p < 0.001), dilacerated roots were 2.26 times more likely to develop EARR (p < 0.001), and for each additional millimeter of root length, the risk of EARR increased by 29% (p < 0.001). Conclusions The potential risk factors for EARR after orthodontic treatment included treatment with maxillary premolar extraction, increased overjet at the beginning of treatment, and dilacerated roots.
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Affiliation(s)
| | - Natália Couto Figueiredo
- Department Of Orthodontics, School Of Dentistry, Pontifical Catholic University Of Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Ildeu Andrade
- Department Of Orthodontics, School Of Dentistry, Pontifical Catholic University Of Minas Gerais, Belo Horizonte, Brazil
| | - Jonas Capelli Junior
- Department of Orthodontics, School of Dentistry, State University of Rio de Janeiro, Rio de Janeiro, Brazil
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Bartzela TN, Mang de la Rosa MR, Wolf K, Schmidt A, Opitz C. Apical root resorption after orthodontic treatment in patients with unilateral cleft lip and palate. Clin Oral Investig 2019; 24:1807-1819. [PMID: 31410675 DOI: 10.1007/s00784-019-03044-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 08/05/2019] [Indexed: 01/19/2023]
Abstract
OBJECTIVES The aims of this retrospective longitudinal study were to present the incidence of external apical root resorption (EARR) in the maxillary anterior teeth of patients with complete unilateral cleft lip and palate (CUCLP) and to evaluate the influence of orthodontic treatment variables on the development of EARR. MATERIAL AND METHODS Forty-one patients with CUCLP participated in the study. Orthopantomograms (OPGs), taken before (T2) treatment with multiband orthodontic appliances (MBA), and periapical radiographs (PAs) of the maxillary anterior teeth taken at the end (T3) of orthodontic treatment (OT) were assessed for EARR. RESULTS The incidence of EARR at T3 (97.6%) was considerably higher than at T2 (51.2%). Central incisors and canines on the cleft side showed a significantly higher score (p < 0.01, p < 0.05 respectively) of EARR in comparison to the same group of teeth on the non-cleft side. Preexisting EARR and abnormal root morphology were identified as predisposing factors for EARR. CONCLUSIONS Patients with CUCLP treated with MBA have higher incidence of EARR on the maxillary anterior teeth of the cleft side. Severe EARR is rather rare but more often seen on central incisors of the cleft side. CLINICAL RELEVANCE As most of the patients with cleft lip and palate undergo a challenging and long-term OT with MBA, it is of importance to identify the predisposing factors related to the special anatomical features of the bone and teeth located in the cleft area, as well as the special OT needs of these patients.
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Affiliation(s)
- Theodosia N Bartzela
- Charité - Universitätsmedizin Berlin, CC03 Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Berlin, Germany.
| | - Maria R Mang de la Rosa
- Charité - Universitätsmedizin Berlin, CC03 Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Berlin, Germany
| | | | | | - Charlotte Opitz
- Charité - Universitätsmedizin Berlin, CC03 Department of Orthodontics, Dentofacial Orthopedics and Pedodontics, Berlin, Germany
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Zasčiurinskienė E, Lund H, Lindsten R, Jansson H, Bjerklin K. Outcome of orthodontic treatment in subjects with periodontal disease. Part III: a CBCT study of external apical root resorption. Eur J Orthod 2019; 41:575-582. [DOI: 10.1093/ejo/cjz040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Summary
Background
No evidence is present on the risk for external apical root resorption (EARR) during orthodontic treatment (OT) of adult patients with periodontal disease.
Aim
To examine EARR after OT in subjects with periodontal disease and to analyse how intrusion and change in inclination of the most proclined maxillary incisors influence EARR.
Methods
The study included 50 patients with periodontal disease. Sub-gingival debridement by ultrasonic instrumentation supplemented with hand instruments was performed by experienced dental hygienist after baseline examination for all patients. For the control group, final periodontal treatment (PT) was performed before orthodontic tooth movement. For the test group patients, final PT was performed after levelling and alignment phases were finished, before the active space closure with elastic chain and/or inter-arch elastic traction for sagittal correction was started. OT was performed with a straight-wire appliance. Micro-implants or implants were used for posterior anchorage. Cone beam computed tomography examinations were performed before and after OT. EARR of all single-rooted teeth were measured. EARR of the most proclined maxillary incisor was related to intrusion and change in inclination angle.
Results
EARR after OT was observed in median 80.7 per cent (interquartile range 22.02) of single-rooted teeth [mean 1.2 (standard deviation 0.44) mm]. In 82.3 per cent of teeth, EARR was 2 mm or less. Severe EARR was found in 8 per cent of patients and five maxillary incisors (less than 1 per cent of all teeth). The amount of intrusion and change in inclination angle of the most proclined maxillary central incisor influenced the extent of EARR. Mean EARR was significantly higher when OT lasted more than 18 months (P = 0.02).
Conclusions
OT in conjunction with PT in periodontal patients resulted in EARR in 81 per cent of all single-rooted teeth. Intrusion and change in inclination angle of the most proclined maxillary central incisor influenced the extent of EARR, as did longer OT.
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Affiliation(s)
- Eglė Zasčiurinskienė
- Department of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Center for Oral Health, Jönköping University, Jönköping, Sweden
| | - Henrik Lund
- Department of Oral and Maxillofacial Radiology, Sahlgrenska Academy, Institute of Odontology, University of Gothenburg, Sweden
| | - Rune Lindsten
- Center for Oral Health, Jönköping University, Jönköping, Sweden
- Department of Orthodontics, Institute for Postgraduate Dental Education, Jönköping, Sweden
| | - Henrik Jansson
- Center for Oral Health, Jönköping University, Jönköping, Sweden
- Department of Periodontology, Institute for Postgraduate Dental Education, Jönköping, Sweden
| | - Krister Bjerklin
- Department of Orthodontics, Institute for Postgraduate Dental Education, Jönköping, Sweden
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Abstract
Translational research aims to move knowledge generated from basic science and apply it to the clinical setting. As orthodontists, we continually strive for faster, safer and alternative clinical therapies in our goal to improve our patient outcomes and experiences. Our clinical questions may be answered by benchtop research and the ensuing translational research involving relevant animal models and robust clinical trials.
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Affiliation(s)
- Rishma Shah
- Department of Orthodontics, UNC-CH Adams School of Dentistry, Chapel Hill, NC, USA
| | - John Paul Zermeno
- Department of Orthodontics, UNC-CH Adams School of Dentistry, Chapel Hill, NC, USA
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Matsumoto Y, Sringkarnboriboon S, Ono T. Proinflammatory mediators related to orthodontically induced periapical root resorption in rat mandibular molars. Eur J Orthod 2019; 39:686-691. [PMID: 28444165 DOI: 10.1093/ejo/cjx033] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Objectives The early phase of orthodontic tooth movement involves acute inflammatory response that may induce bone resorption. The aim of this study was to localize and quantify cells in the periodontium expressing proinflammatory mediators during orthodontically induced periapical root resorption of the rat mandibular molars. Materials and methods The levels of proinflammatory cytokines interleukin-1 (IL-1) α and β, tumor necrosis factor-α (TNF-α), inflammatory enzymes cyclooxygenase (COX) 1 and 2, and their product prostaglandin E2 (PGE2) in the root resorption site were compared to those in the corresponding area of the untreated periodontal ligament (PDL) of physiologically drifting teeth. Continuous heavy orthodontic force was applied to the mandibular first molar for 8 and 15 days while in occlusion to induce root resorption. Frozen sections including root resorption lacunae were analyzed for the activity of non-specific esterase (NSE) and tartrate-resistant acid phosphatase (TRAP) by enzyme histochemistry and for the expression of IL-1α, IL-1β, TNF-α, COX-1, COX-2, and PGE2 by immunohistochemistry. Results The active root resorption lacunae had significantly more TRAP-positive multinucleated odontoclasts, whereas the number of NSE-positive cells of the monocyte-macrophage lineage did not differ from that in the control PDL. Several types of periodontal cells exhibited a significant increase in the expression of IL-1α, IL-1β, TNF-α, COX-2, and PGE2 in the root resorption zone, while COX-1 was rarely detected. Conclusions These data suggest that proinflammatory mediators expressed in periodontal cells may synergistically promote apical root resorption in response to continuous heavy mechanical force applied to teeth.
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Affiliation(s)
- Yoshiro Matsumoto
- Department of Orthodontic Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Takashi Ono
- Department of Orthodontic Science, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Bacon W, Canal P, Amat P. [Not Available]. Orthod Fr 2018; 89:327-342. [PMID: 30565552 DOI: 10.1051/orthodfr/2018031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
| | | | - Philippe Amat
- 19, place des Comtes du Maine, 72000 Le Mans, France
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Antagonistic effect of IL1 variants in periodontitis and external apical root resorption: Evidence from a literature review. Arch Oral Biol 2018; 95:195-201. [DOI: 10.1016/j.archoralbio.2018.08.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 07/13/2018] [Accepted: 08/14/2018] [Indexed: 01/07/2023]
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Nowrin SA, Jaafar S, Ab Rahman N, Basri R, Alam MK, Shahid F. Association between genetic polymorphisms and external apical root resorption: A systematic review and meta-analysis. Korean J Orthod 2018; 48:395-404. [PMID: 30450332 PMCID: PMC6234115 DOI: 10.4041/kjod.2018.48.6.395] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 06/26/2018] [Accepted: 07/04/2018] [Indexed: 01/06/2023] Open
Abstract
Objective To date, only a few studies have investigated the relationships between genetic polymorphisms and external apical root resorption (EARR). Hence, the aim of this systematic review was to explore the relationship between different gene polymorphisms and their association with EARR. Methods A complete literature search was conducted by two independent reviewers. The PubMed, Science Direct, and Scopus databases were searched. In addition, the bibliographies of all textbooks and relevant articles were searched manually. A meta-analysis was performed using data entered into the electronic databases until February 28, 2017. Results On the basis of the search, we identified 17 and 7 publications for the systematic review and meta-analysis, respectively. Odds ratio (OR) was used to evaluate the association of the interleukin 1B (+3954) polymorphism and the risk of EARR. The overall OR from the studies was used to estimate the risk of EARR. However, no association was found and no publication bias was apparent for the risk of EARR in patients receiving orthodontic treatment. Conclusions More research on the relationship between gene polymorphism and EARR is necessary to determine better specificity of possible interactions.
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Affiliation(s)
- Shifat A Nowrin
- Orthodontic Unit, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Saidi Jaafar
- Craniofacial Biology Research Group, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Norma Ab Rahman
- Orthodontic Unit, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Rehana Basri
- Department of Medicine, College of Medicine, Al Jouf University, Sakaka, Saudi Arabia
| | | | - Fazal Shahid
- Orthodontic Unit, School of Dental Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
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Periostin, dentin matrix protein 1 and P2rx7 ion channel in human teeth and periodontal ligament. Ann Anat 2018; 216:103-111. [DOI: 10.1016/j.aanat.2017.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 11/27/2017] [Accepted: 12/01/2017] [Indexed: 02/06/2023]
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Zhou J, Hu H, Huang R. A pilot study of the metabolomic profiles of saliva from female orthodontic patients with external apical root resorption. Clin Chim Acta 2017; 478:188-193. [PMID: 29291387 DOI: 10.1016/j.cca.2017.12.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/22/2017] [Accepted: 12/28/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Orthodontically induced external apical root resorption (OIEARR) is one of the most severe complications of orthodontic treatment, which is hard to diagnose at early stage by merely radiographic examination. This study aimed to identify salivary metabolic products using unbiased metabolic profiling in order to discover biomarkers that may indicate OIEARR. MATERIALS AND METHODS Unstimulated saliva samples were analyzed from 19 healthy orthodontic patients with EARR (n=8) and non-EARR (n=11). Metabolite profiling was performed using 1H Nuclear Magnetic Resonance (NMR) spectroscopy. RESULTS A total of 187 metabolites were found in saliva samples. With supervised partial least squares discriminant analysis and regression analysis, samples from 2 groups were well separated, attributed by a series of metabolites of interest, including butyrate, propane-1,2-diol, α-linolenic acid (Ala), α-glucose, urea, fumarate, formate, guanosine, purine, etc. Indicating the increased inflammatory responses in the periodontal tissues possibly associated with energy metabolism and oxidative stress. CONCLUSIONS The effective separation capacity of 1H NMR based metabolomics suggested potential feasibility of clinical application in monitoring periodontal and apical condition in orthodontic patients during treatment and make early diagnosis of OIEARR. Metabolites detected in this study need further validation to identify exact biomarkers of OIEARR. Saliva biomarkers may assist in diagnosis and monitoring of this disease.
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Affiliation(s)
- Jinglin Zhou
- Deptment of Oral and Maxillofacial Surgery, State Key Laboratory of Oral Disease, West China School of Stomatology, Sichuan University, PR China.
| | - Huimin Hu
- State Key Laboratory of Oral Disease, West China School of Stomatology, Sichuan University, PR China
| | - Renhuan Huang
- State Key Laboratory of Oral Disease, West China School of Stomatology, Sichuan University, PR China
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38
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Nanda R, Amat P. [Not Available]. Orthod Fr 2017; 88:297-317. [PMID: 29315064 DOI: 10.1051/orthodfr/2017029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Le Pr Ravindra Nanda a obtenu une licence et une maîtrise en dentisterie et en orthodontie du King George's Medical College, Lucknow University. En 1967, il a intégré l'Université Catholique de Nimègue, aux Pays-Bas, où il a obtenu un doctorat en philosophie en 1969. Il a rejoint la nouvelle école dentaire de Loyola à Chicago en 1970, après avoir occupé le poste de Professeur assistant en orthodontie dans le service dirigé par Frans van der Linden. En 1972, il fut promu au Département d'Orthodontie de l'Université du Connecticut à Farmington, CT, et y reçu son certificat en orthodontie sous la direction de Charles Burstone. Professeur adjoint, puis professeur titulaire à partir de 1979, il a assumé le poste de Chef du Département d'Orthodontie à partir de 1992 et a été promu pour diriger le Département des Sciences Craniofaciales en 2004, dont les divisions de chirurgie orale et maxillo-faciale, de dentisterie pédiatrique, de l'enseignement supérieur en dentisterie générale et en orthodontie.
Il est membre et ancien président de la composante Atlantique Nord de la Edward H. Angle Society of Orthodontists. Il occupe actuellement la fonction de rédacteur en chef de Progress in Orthodontics, de rédacteur associé du Journal of Clinical Orthodontics et est membre du comité éditorial de neuf revues d'orthodontie nationales et internationales. Il est membre de l'Association dentaire américaine, de l'Association dentaire de l'État du Connecticut, de la Hartford Dental Society, de l'Association américaine des orthodontistes, de la Société européenne d'orthodontie, de l'Association internationale de recherche dentaire et du College of Diplomates of American Board of Orthodontists.
Il a rédigé et publié sept manuels et plus de 200 articles dans des revues à comité de lecture. Il a donné des conférences magistrales dans plus de 40 pays et a reçu de nombreux prix et honneurs pour ses contributions en dentisterie et en orthodontie, aux États-Unis et de la part d'organisations internationales d'orthodontie. Il est membre d'honneur des Jordan Orthodontic Society, Czech Orthodontic Society, Taiwanese Orthodontic Society, Central American Orthodontics Society et membre d'honneur à vie de l'Indian Orthodontic Society.
Ravindra Nanda a été honoré du Life Time Achievement Award (University of Connecticut Foundation), et il est Senior Research Fellow (Japan Promotion for Science, Sendai, Japan − Tohoku University). Il a prononcé de nombreuses conférences d'honneur : la John Taylor Lecture, lors de la réunion annuelle de l'Australian Society of Orthodontics Foundation, la Sheldon Friel Memorial Lecture lors de la réunion annuelle de l'European Orthodontic Society, la Gordon Kirkness Memorial Lecture lors de la réunion annuelle de l'Australian Society of Orthodontics, la John Mershon Memorial Lecture, Boston, Massachusetts lors de la réunion annuelle de l'American Association of Orthodontics et la Wendell L. Wylie Memorial Lecture, à l'Université de San Francisco, Californie.
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Affiliation(s)
- Ravindra Nanda
- University of Connecticut, School of Dental Medicine Farmington, CT 06030-1725, États-Unis
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Hartsfield JK, Jacob GJ, Morford LA. Heredity, Genetics and Orthodontics - How Much Has This Research Really Helped? Semin Orthod 2017; 23:336-347. [PMID: 29290679 DOI: 10.1053/j.sodo.2017.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Uncovering the genetic factors that correlate with a clinical deviation of previously unknown etiology helps to diminish the unknown variation influencing the phenotype. Clinical studies, particularly those that consider the effects of an appliance or treatment regimen on growth, need to be a part of these types of genetic investigations in the future. While the day-to-day utilization of "testing" for genetic factors is not ready for practice yet, genetic testing for monogenic traits such as Primary Failure of Eruption (PFE) and Class III malocclusion is showing more promise as knowledge and technology advances. Although the heterogeneous complexity of such things as facial and dental development, the physiology of tooth movement, and the occurrence of External Apical Root Resorption (EARR) make their precise prediction untenable, investigations into the genetic factors that influence different phenotypes, and how these factors may relate to or impact environmental factors (including orthodontic treatment) are becoming better understood. The most important "genetic test" the practitioner can do today is to gather the patient's individual and family history. This would greatly benefit the patient, and augment the usefulness of these families in future clinical research in which clinical findings, environmental, and genetic factors can be studied.
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Affiliation(s)
- James K Hartsfield
- E. Preston Hicks Professor of Orthodontics and Oral Health Research, University of Kentucky Center for the Biologic Basis of Oral/Systemic Diseases, Hereditary Genetics/Genomics Core
| | - George Jeryn Jacob
- Craniofacial Genetics Fellow, University of Kentucky Center for the Biologic Basis of Oral/Systemic Diseases, Hereditary Genetics/Genomics Core
| | - Lorri Ann Morford
- Research Assistant Professor, University of Kentucky Center for the Biologic Basis of Oral/Systemic Diseases, Hereditary Genetics/Genomics CoreThe University of Kentucky College of Dentistry, 800 Rose Street, Lexington, Kentucky USA 40536-0297
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Consolaro A, Bianco DDA. Tooth resorptions are not hereditary. Dental Press J Orthod 2017; 22:22-27. [PMID: 28902245 PMCID: PMC5573006 DOI: 10.1590/2177-6709.22.4.022-027.oin] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 05/19/2017] [Indexed: 11/28/2022] Open
Abstract
Root resorptions caused by orthodontic movement are not supported by consistent scientific evidence that correlate them with heredity, individual predisposition and genetic or familial susceptibility. Current studies are undermined by methodological and interpretative errors, especially regarding the diagnosis and measurements of root resorption from orthopantomographs and cephalograms. Samples are heterogeneous insofar as they comprise different clinical operators, varied types of planning, and in insufficient number, in view of the prevalence of tooth resorptions in the population. Nearly all biological events are coded and managed through genes, but this does not mean tooth resorptions are inherited, which can be demonstrated in heredograms and other methods of family studies. In orthodontic root resorption, one cannot possibly determine percentages of how much would be due to heredity or genetics, environmental factors and unknown factors. There is no need to lay the blame of tooth resorptions on events taking place outside the orthodontic realm since in the vast majority of cases, resorptions are not iatrogenic. In orthodontic practice, when all teeth are analyzed and planned using periapical radiography or computerized tomography, and when considering all predictive factors, tooth resorptions are not iatrogenic in nature and should be considered as one of the clinical events inherent in the treatment applied.
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Affiliation(s)
- Alberto Consolaro
- Bauru School of Dentistry, Universidade de São Paulo (Bauru/SP, Brazil). Ribeirão Preto School of Dentistry, Universidade de São Paulo (Ribeirão Preto/SP, Brazil)
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Nieto-Nieto N, Solano JE, Yañez-Vico R. External apical root resorption concurrent with orthodontic forces: the genetic influence. Acta Odontol Scand 2017; 75:280-287. [PMID: 28358285 DOI: 10.1080/00016357.2017.1294260] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Root resorption is a pathological process of multifactorial origin related to the permanent loss of dental root structure in response to a mechanical, inflammatory, autoimmune or infectious stimulus. External apical root resorption (EARR) is a frequent clinical complication secondary to orthodontic tooth movement; apart from variables related to treatment, environmental factors and/or interindividual genetic variations can confer susceptibility or resistance to its occurrence. In this context, genetic predisposition has been described as an etiological factor, together with mechanical factors derived from orthodontic treatment. In recent years, international research groups have determined the degree of influence of some genetic biomarkers in defining increased/reduced susceptibility to postorthodontic EARR. The influences of the IL1 gene cluster (IL1B, IL1A, IL1RN, IL6), P2RX7, CASP1, OPG (TNFRSF11B), RANK (TNFRSF11A), Osteopontin (OPN), TNFα, the vitamin D receptor (TaqI), TNSALP and IRAK1 have been analyzed. The objective of the present review study was to compile and analyze the latest information about the genetic background predisposing to EARR during orthodontic treatment. Genetics-based studies along with other basic science research in the field might help to clarify the exact nature of EARR, the influence of genetic inheritance and possibly lead to the prevention or even eradication of this phenomenon during orthodontic treatment.
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Affiliation(s)
- Nuria Nieto-Nieto
- Department of Stomatology, School of Dentistry, University of Seville, Seville, Spain
| | - Jose Enrique Solano
- Department of Stomatology, School of Dentistry, University of Seville, Seville, Spain
| | - Rosa Yañez-Vico
- Department of Stomatology, School of Dentistry, University of Seville, Seville, Spain
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Winkler J, Göllner N, Göllner P, Pazera P, Gkantidis N. Apical root resorption due to mandibular first molar mesialization: A split-mouth study. Am J Orthod Dentofacial Orthop 2017; 151:708-717. [DOI: 10.1016/j.ajodo.2016.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 08/02/2015] [Accepted: 09/05/2016] [Indexed: 10/19/2022]
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Guo Y, He S, Gu T, Liu Y, Chen S. Genetic and clinical risk factors of root resorption associated with orthodontic treatment. Am J Orthod Dentofacial Orthop 2017; 150:283-9. [PMID: 27476361 DOI: 10.1016/j.ajodo.2015.12.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 12/01/2015] [Accepted: 12/01/2015] [Indexed: 10/21/2022]
Abstract
INTRODUCTION External apical root resorption (EARR) is a common complication in orthodontic treatment. Despite many studies on EARR, great controversies remain with regard to its risk factors. The objective of this study was to explore the relationship among sex, root movement, IL-1RN single nucleotide polymorphism (SNP) rs419598, IL-6 SNP rs1800796, and EARR associated with orthodontic treatment. METHODS Altogether 174 patients (with 174 maxillary left central incisors) were selected for this study. Cone-beam computed tomography was performed before the start of the treatment and at the end of the treatment. Cone-beam computed tomography data were used to reconstruct a 3-dimensional image of each tooth; the volume and the root resorption volume of each tooth were calculated. Three-dimensional matching was used to measure the amount of movement of each root. Genomic DNA was extracted from buccal swabs, and genotypes of SNP rs419598 and SNP rs1800796 of each subject were determined using TaqMan polymerase chain reaction genotyping (Applied Biosystems, Foster City, Calif). The data were analyzed with multiple linear regression analysis. RESULTS The statistical analysis indicated no relationship between sex, tooth movement amount, and IL-1RN SNP rs419598 with EARR. The IL-6 SNP rs1800796 GC was associated with EARR, and root resorption differed significantly between SNP rs1800796 GC and CC. CONCLUSIONS IL-6 SNP rs1800796 GC is a risk factor for EARR. The amount of root movement, IL-1RN SNP rs419598, and sex as risk factors for EARR need further study.
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Affiliation(s)
- Yujiao Guo
- Postgraduate student, State Key Laboratory of Oral Disease, Department of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China; clinician, Department of Orthodontics, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Shushu He
- Lecturer, State Key Laboratory of Oral Disease, Department of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Tian Gu
- Postgraduate student, State Key Laboratory of Oral Disease, Department of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yi Liu
- Postgraduate student, State Key Laboratory of Oral Disease, Department of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Song Chen
- Professor, State Key Laboratory of Oral Disease, Department of Orthodontics, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China.
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Tehranchi A, Sadighnia A, Younessian F, Abdi AH, Shirvani A. Correlation of Vitamin D status and orthodontic-induced external apical root resorption. Dent Res J (Isfahan) 2017; 14:403-411. [PMID: 29238379 PMCID: PMC5713064 DOI: 10.4103/1735-3327.218565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background Adequate Vitamin D is essential for dental and skeletal health in children and adult. The purpose of this study was to assess the correlation of serum Vitamin D level with external-induced apical root resorption (EARR) following fixed orthodontic treatment. Materials and Methods In this cross-sectional study, the prevalence of Vitamin D deficiency (defined by25-hydroxyvitamin-D) was determined in 34 patients (23.5% male; age range 12-23 years; mean age 16.63 ± 2.84) treated with fixed orthodontic treatment. Root resorption of four maxillary incisors was measured using before and after periapical radiographs (136 measured teeth) by means of a design-to-purpose software to optimize data collection. Teeth with a maximum percentage of root resorption (%EARR) were indicated as representative root resorption for each patient. A multiple linear regression model and Pearson correlation coefficient were used to assess the association of Vitamin D status and observed EARR. P < 0.05 was considered statistically significant. Results The Pearson coefficient between these two variables was determined about 0.15 (P = 0.38). Regression analysis revealed that Vitamin D status of the patients demonstrated no significant statistical correlation with EARR, after adjustment of confounding variables using linear regression model (P > 0.05). Conclusion This study suggests that Vitamin D level is not among the clinical variables that are potential contributors for EARR. The prevalence of Vitamin D deficiency does not differ in patients with higher EARR. These data suggest the possibility that Vitamin D insufficiency may not contribute to the development of more apical root resorption although this remains to be confirmed by further longitudinal cohort studies.
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Affiliation(s)
- Azita Tehranchi
- Preventive Dental Research Center, Research Institute of Dental Sciences, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azin Sadighnia
- Dentofacial Deformities Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farnaz Younessian
- Department of Orthodontics, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL 33328, USA
| | - Amir H Abdi
- Department of Electrical and Computer Engineering, Faculty of Applied Sciences, University of British Columbia, Vancouver, Canada
| | - Armin Shirvani
- Iranian Center of Endodontic Research, School of Medical Education, Faculty of Medical Education, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Wahab RMA, Shafiai NAA, Ariffin SHZ. An Insight into Risk Factors for Root Resorption During
Orthodontic Treatment. JOURNAL OF MEDICAL SCIENCES 2016. [DOI: 10.3923/jms.2017.1.9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Abstract
When orthodontic patients desire shorter treatment times with aesthetic results and long-term stability, it is important for the orthodontist to understand the potential limitations and problems that may arise during standard and/or technology-assisted accelerated treatment. Bone density plays an important role in facilitating orthodontic tooth movement (OTM), such that reductions in bone density can significantly increase movement velocity. Lifestyle, genetic background, environmental factors, and disease status all can influence a patients' overall health and bone density. In some individuals, these factors may create specific conditions that influence systemic-wide bone metabolism. Both genetic variation and the onset of a bone-related disease can influence systemic bone density and local bone density, such as observed in the mandible and maxilla. These types of localized density changes can affect the rate of OTM and may also influence the risk of unwanted outcomes, i.e., the occurrence of dental external apical root resorption (EARR).
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Affiliation(s)
- Alejandro Iglesias-Linares
- Department of Orthodontics, Complutense University of Madrid, Plaza Ramon y Cajal sn, Phone: +34636705246,
| | - Lorri Ann Morford
- University of Kentucky Center for the Biologic Basis of Oral/Systemic Diseases, 1095 Veterans Administration Drive, HSRB Room 414, Lexington, KY 40536-0305 USA, Phone: 859-323-2595 Fax: 859-257-6566,
| | - James Kennedy Hartsfield
- University of Kentucky Center for the Biologic Basis of Oral/Systemic Diseases, 1095 Veterans Administration Drive, HSRB Room 414, Lexington, KY 40536-0305 USA, Phone: 859-323-0296 Fax: 859-257-6566,
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Iglesias-Linares A, Hartsfield JK. Cellular and Molecular Pathways Leading to External Root Resorption. J Dent Res 2016; 96:145-152. [PMID: 27811065 DOI: 10.1177/0022034516677539] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
External apical root resorption during orthodontic treatment implicates specific molecular pathways that orchestrate nonphysiologic cellular activation. To date, a substantial number of in vitro and in vivo molecular, genomic, and proteomic studies have supplied data that provide new insights into root resorption. Recent mechanisms and developments reviewed here include the role of the cellular component-specifically, the balance of CD68+, iNOS+ M1- and CD68+, CD163+ M2-like macrophages associated with root resorption and root surface repair processes linked to the expression of the M1-associated proinflammatory cytokine tumor necrosis factor, inducible nitric oxide synthase, the M1 activator interferon γ, the M2 activator interleukin 4, and M2-associated anti-inflammatory interleukin 10 and arginase I. Insights into the role of mesenchymal dental pulp cells in attenuating dentin resorption in homeostasis are also reviewed. Data on recently deciphered molecular pathways are reviewed at the level of (1) clastic cell adhesion in the external apical root resorption process and the specific role of α/β integrins, osteopontin, and related extracellular matrix proteins; (2) clastic cell fusion and activation by the RANKL/RANK/OPG and ATP-P2RX7-IL1 pathways; and (3) regulatory mechanisms of root resorption repair by cementum at the proteomic and transcriptomic levels.
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Affiliation(s)
- A Iglesias-Linares
- 1 Department of Orthodontics, School of Dentistry, Complutense University of Madrid, Madrid, Spain
| | - J K Hartsfield
- 2 Oral Health Science, College of Dentistry, University of Kentucky, Lexington, KY, USA
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Three consecutive days of application of LED therapy is necessary to inhibit experimentally induced root resorption in rats: a microtomographic study. Lasers Med Sci 2016; 32:181-187. [DOI: 10.1007/s10103-016-2100-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 10/17/2016] [Indexed: 02/07/2023]
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Borilova Linhartova P, Cernochova P, Kastovsky J, Vrankova Z, Sirotkova M, Izakovicova Holla L. Genetic determinants and postorthodontic external apical root resorption in Czech children. Oral Dis 2016; 23:29-35. [PMID: 27493142 DOI: 10.1111/odi.12564] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 07/27/2016] [Accepted: 07/29/2016] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Genes, involved in the modulation of inflammatory response and bone remodeling, play a role in the development of postorthodontic external apical root resorption (EARR). The aim of our study was to analyze possible associations between seven single nucleotide polymorphisms (SNPs) in interleukin-17A (IL-17), osteopontin (SPP1), purinoreceptor P2X7 (P2RX7), and tumor necrosis factor receptor superfamily member 11B (TNFRSF11B) genes and EARR in children after orthodontic treatment. SUBJECTS AND METHODS This case-control study comprised 99 orthodontically treated patients (69 controls and 30 subjects with EARR). Genotype determinations of rs2275913, rs11730582, rs9138, rs208294, rs1718119, rs3102735, and rs2073618 were based on polymerase chain reaction using 5' nuclease TaqMan® assays. RESULTS While no significant differences were observed in allele or genotype frequencies of all seven studied SNPs, specific haplotype of P2RX7 (rs208294 and rs1718119) modified the risk of EARR development (P < 0.05). In addition, the length of treatment with a fixed orthodontic appliance positively correlated with the presence of EARR (P < 0.05). CONCLUSIONS Although the effect of individual SNPs studied on the EARR development was not confirmed in the Czech population, complex analysis suggested that variability in the P2RX7 gene and the length of orthodontic treatment may be important factors contributing to the etiopathogenesis of postorthodontic EARR.
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Affiliation(s)
- P Borilova Linhartova
- Clinic of Stomatology, Institutions Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - P Cernochova
- Clinic of Stomatology, Institutions Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - J Kastovsky
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Z Vrankova
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - M Sirotkova
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - L Izakovicova Holla
- Clinic of Stomatology, Institutions Shared with St. Anne's Faculty Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic.,Department of Pathophysiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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Iglesias-Linares A, Sonnenberg B, Solano B, Yañez-Vico RM, Solano E, Lindauer SJ, Flores-Mir C. Orthodontically induced external apical root resorption in patients treated with fixed appliances vs removable aligners. Angle Orthod 2016; 87:3-10. [PMID: 27504821 DOI: 10.2319/02016-101.1] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To determine whether orthodontic treatment with removable aligners vs fixed orthodontic appliances is associated with a different frequency of orthodontically induced external apical root resorption (OIEARR) when genetic, radiographic, and clinical factors are accounted for. MATERIALS AND METHODS Three hundred seventy-two orthodontic patients treated with removable aligners (Invisalign) or fixed appliances were genetically screened for interleukin 1B gene (IL1B) (rs1143634), interleukin 1 receptor antagonist gene (IL1RN) (rs419598), and osteopontin gene (SPP1) (rs9138/rs11730582). Twelve clinical variables, potentially associated with OIEARR, were also considered. Subjects were divided according to the presence of radiographically determined OIEARR (>2 mm). The association between OIEARR and appliance type, and radiographic, clinical and genetic factors, was assessed using backward stepwise conditional logistic regression. Odds ratios (ORs) and 95% confidence intervals (CIs) were reported. RESULTS Reliability of the methods was adequate. Clinical case complexity (American Board of Orthodontics [ABO] Discrepancy Index) (OR: 1.032; 95% CI: 1.005-1.061; P = .021) and extent of incisor apical displacement in the sagittal plane (OR: 1.478; 95% CI: 1.285-1.699; P = .001) were associated with an increased OIEARR risk. After adjusting for associations between clinical/radiographic/genetic factors, there were no statistically significant differences with respect to OIEARR or type of orthodontic appliance used, whether removable aligners or fixed appliances (OR: 1.662; 95% CI: 0.945-2.924; P = .078). Only subjects homozygous for the T allele of IL1RN (rs419598) were more prone to OIEARR during orthodontic treatment (OR: 3.121; CI: 1.93-5.03; P < .001). CONCLUSIONS A similar OIEARR predisposition was identified using either removable aligners (Invisalign) or fixed appliances.
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