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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 34 (2019), No. 3     28. May 2019
Int J Oral Maxillofac Implants 34 (2019), No. 3  (28.05.2019)

Page 768-771, doi:10.11607/jomi.7057, PubMed:30716146

MMP-13 Polymorphism as a Risk Factor in Implant Loss
de Araujo Munhoz, Francielle Boçon / Branco, Filipe Polese / Rodrigues Souza, Ricardo Lehtonen / Dos Santos, Maria Cristina Leme Godoy
Purpose: To investigate whether MMP-13 g.-77 A > G (rs2252070) gene polymorphism is associated with early implant loss.
Materials and Methods: Two hundred nonsmoking volunteers in good oral health, > 18 years of age, and found to be periodontally healthy by clinical examination were matched by age, sex, and implant position and separated into two groups: control group (100 patients with one or more healthy implants for a minimum of 1 year) and test group (100 patients who had suffered early implant loss, considered when implants presented mobility and/or pain before or during abutment connection, requiring their removal). Genomic DNA from saliva was genotyped by PCR-RFLP. Statistical analysis of the results was done using Mann-Whitney U and chi-square tests, with a significance level of 5%.
Results: A significant difference in the presence of the different alleles and genotype was found between groups for the MMP-13 g.-77 A > G (rs2252070) gene polymorphism (P = .0161, OR 95% = 0.57 [0.37 to 0.89]; P = .007, OR 95% = 0.44 [0.25 to 0.78]). The A allele increased susceptibility to early implant loss and appeared to be a genetic risk factor.
Conclusion: The findings suggest that MMP-13 g.‐77 A > G (rs2252070) polymorphism may contribute to early implant loss.

Keywords: implant loss, metalloproteinase, polymorphism, risk factor