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Genetic and Treatment-related Risk Factors Associated with External Apical Root Resorption (EARR) Concurrent with Orthodontia

Overview
Specialty Dentistry
Date 2015 Apr 14
PMID 25865535
Citations 32
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Abstract

Objective: As genetic variation accounts for two-thirds of the variation in external apical root resorption (EARR) concurrent with orthodontic treatment, we analyzed the association of selected genetic and treatment-related factors with EARR concurrent with orthodontic treatment.

Setting And Sample Population: This case-control study of 134 unrelated, orthodontically treated Caucasian individuals was conducted in part at an Indiana Private Practice, Indiana University and the University of Kentucky.

Methods: Utilizing a research data bank containing information from ~1450 orthodontically treated patients, pre- and post-treatment radiographs from 460 individuals were evaluated for EARR of the four permanent maxillary incisors. Sixty-seven unrelated Caucasians with moderate to severe EARR were identified and were age-/sex-matched with orthodontically treated Caucasian controls yielding 38 females and 29 males per group. Factors tested for an association with EARR included the following: 1) treatment duration, 2) extraction of maxillary premolars, 3) numerous cephalometric measurements, and 4) DNA polymorphisms within/near candidate genes in a pathway previously implicated in EARR such as the purinergic-receptor-P2X, ligand-gated ion channel 7 (P2RX7; rs208294, rs1718119, and rs2230912), caspase-1 (CASP1; rs530537, rs580253, and rs554344), interleukin-1 beta (IL1B; rs1143634), interleukin-1 alpha (IL1A; rs1800587), and interleukin-1 receptor antagonist (IL1RA; rs419598) genes. Stepwise logistic regression was utilized to identify the factors significantly associated (significance taken at or less than the layered Bonferroni correction alpha) with the occurrence of EARR.

Results: A long length of treatment and the presence of specific genotypes for P2RX7 SNP rs208294 were significantly associated with EARR.

Conclusion: EARR occurrence was associated with both genetic and treatment-related variables, which together explained 25% of the total variation associated with EARR in the sample tested.

Citing Articles

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Bibliometric analysis of publications on genetic polymorphism and external apical root resorption research.

Pinheiro L, de Moura D, Antunes L, Antunes L Dental Press J Orthod. 2024; 29(4):e2423268.

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Genetic polymorphisms linked to extreme postorthodontic external apical root resorption in Koreans.

Liu J, Park K, Choi Y, Lee J, Cha J Prog Orthod. 2024; 25(1):23.

PMID: 38853224 PMC: 11162991. DOI: 10.1186/s40510-024-00521-7.


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