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Factors influencing the fracture of dental implants.

Journal article
Authors Bruno Ramos Chrcanovic
Jenö Kisch
Tomas Albrektsson
Ann Wennerberg
Published in Clinical implant dentistry and related research
Volume 20
Issue 1
Pages 58–67
ISSN 1708-8208
Publication year 2018
Published at Institute of Odontology, Section 2
Institute of Clinical Sciences, Department of Biomaterials
Pages 58–67
Language en
Links dx.doi.org/10.1111/cid.12572
www.ncbi.nlm.nih.gov/entrez/query.f...
Subject categories Other Medical Sciences

Abstract

Implant fractures are rare but offer a challenging clinical situation.To determine the prevalence of implant fracture and the possible risk factors predisposing an implant to a higher fracture risk.This retrospective study is based on 2670 patients consecutively treated with implant-supported prostheses. Anatomical-, patient-, and implant-related factors were collected. Descriptive statistics and survival analyses were performed. Generalized estimating equations (GEE) evaluated the effect of explanatory variables on implant fracture.Forty-four implants (out of 10 099; 0.44%) fractured. The mean ± standard deviation time for fracture to occur was 95.1 ± 58.5 months (min-max, 3.8-294.7). Half of the occurrences of fracture happened between 2 and 8 years after implantation. Five factors had a statistically significant influence on the fracture of implants (increase/decrease in fracture probability): use of higher grades of titanium (decrease 72.9%), bruxism (increase 1819.5%), direct adjacency to cantilever (increase 247.6%), every 1 mm increase in implant length (increase 22.3%), every 1 mm increase in implant diameter (decrease 96.9%).It is suggested that 5 factors could influence the incidence of implant fractures: grade of titanium, implant diameter and length, cantilever, bruxism.

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