首页|Retrospective evaluation of failure rate of 1,000 immediate implants placed in fresh extraction sockets and their risk factors
Retrospective evaluation of failure rate of 1,000 immediate implants placed in fresh extraction sockets and their risk factors
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NSTL
Purpose: To evaluate the failure rate of 1,000 immediately placed implants in fresh extraction sockets and their risk factors. Methods: The data comprised files of 1,000 fresh socket implants placed during the 2014-2019 interval in three Tehran-based private dental clinics. The statistical method was survival analysis consisting of shared frailty and intra-cluster correlation. Moreover, Chi-squared test and Mann-Whitney U test were used to statistically analyze the relationship between each independent variable and the response variable (immediate implant failure). Results: 40 cases of failures among the implants were found, accounting for a 4% failure rate. Shared frailty survival model indicated that only the implant system significantly affects the failure rate. Intra-clustered correlation was 0.41. Chi-squared analysis showed that gender and implant system both significantly affect immediate implant failure. None of the quantitative variables were significantly related to immediate implant failure according to the Mann-Whitney U test.
NSTL
