Journal of Dental Implant Research 2019; 38(3): 59-67  
Meta-analysis of dental implant fracture incidence and related factors
Jung-Ho Kim1, Jae-Ho Kim1, Hyoun-Chull Kim1, Jang-Yeol Lee2, Young-Hyuk Kwon3
Departments of 1Oral & Maxillofacial Surgery, 2Advanced General Dentistry, 3Periodontology, LivingWell Dental Hospital, Goyang, Korea
Correspondence to: Jang-Yeol Lee, Department of Advanced General Dentistry, LivingWell Dental Hospital, 4F Hyowon Major Bldg., 1449 Jungang-ro, Ilsanseo-gu, Goyang 10387, Korea. Tel: +82-31-916-8020, Fax: +82-31-916-8029, E-mail:
Received: September 28, 2019; Accepted: October 30, 2019; Published online: December 31, 2019.
© The Korean Academy of Implant Dentistry. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creative which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Purpose: This study is meta-analysis about the implants fracture from related studies.
Materials and Methods: A NCBI Pubmed search was conducted for English literature published from 1990 to 2018. In this study, the factors of implant fracture were divided into implant-related factor, patient-related factor and prosthetic-related factor. The factors of implant fracture were summarized and the average fracture rate of each factors were compared and analyzed.
Results: The results of this study are summarized as follows. 1) 5,094 fractures occurred from 197,168 implants; average incidence of fracture was 2.58%. 2) Higher incidence of fracture rate was observed in submerged external connection type and fixtures based on titanium grade 1. 3) Higher incidence of the fracture rate was observed in men, ages of 50s, bone density of degree 4. 4) Also bone graft cases, cantilever cases, over-denture and fixed-denture cases showed higher fracture rates each.
Conclusions: From the results above, we concluded that multiple factors, like material factors, patient factors and surgical-procedure factors, were related to the fractures of implants.
Keywords: Cause of fracture, Dental implant, Implant fracture, Meta-analysis

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