ObjectivesThe aim of this study was to assess the survival rate and identify possible risk factors for failure of dental implants placed by postgraduate students in Implantology at a Brazilian Dental School.Materials & methodsA retrospective observational study was conducted to evaluate 1,164 dental implants placed by postgraduate students in Implantology at São Leopoldo Mandic Dental School (Brazil) during a 3-year time period (2018–2020). Data collected from the patients' medical charts included the following: implant loss, gender, diabetes, smoking, continuous use of medication, type of implant connection system, implant position (maxilla or mandible), previous bone grafting and type of prosthetic provisioning (temporary prosthesis, immediate prosthesis or permanent prosthesis). The association between all the independent variables and implant loss was run using χ2 and G tests (α = 5%). The implant survival rate was estimated using Kaplan-Meier curve.ResultsGender, diabetes, smoking, continuous use of medication, type of implant connection system, implant position, previous bone grafting and type of prosthetic provisioning showed no statistically significant association with implant loss. Of the 1,164 implants installed, 29 (2.5%) failed. The overall survival rate of dental implants placed by postgraduate students up to 52 months was 90.5% (IC95%: 74.5%–96.7%).ConclusionsImplants placed by postgraduate students in Implantology at São Leopoldo Mandic Dental School showed a high survival rate, with gender, diabetes, smoking, continuous use of medication, type of implant connection system, implant position, previous bone grafting and type of prosthetic provisioning not accounting for the risk of implant failure.

The aim of this study was to identify any associations between predictor variables, mainly risk factors and dental implant outcome performed by residents in Implantology. Dental records were reviewed from January 1, 2018, to December 31, 2020. The inclusion criteria was all implant surgery made using Intraoss brand. Data collected from the patients’ medical charts included:  implant loss, gender, diabetes, smoking, continuous use of medication, type of implant connection system, implant position (maxilla or mandible), previous bone grafting and type of prosthetic provisioning (temporary prosthesis, immediate prosthesis or permanent prosthesis). It was evaluated the cumulative survival rate of 1,164 dental implants made by residents attending an implantology residency in a university setting. One thousand forty-eight dental implants were placed on 471 patients seen by residents. The cumulative survival rate was 2.5%. Furthemore, the association of implant losses to the variables tested using the chi-square and G tests showed no statistically significant association. Based on Kaplan-Meier curve analysis, with a 95% confidence interval up to 52 months of implant placement, it revealed that the overall survival rate was 90.5%. Therefore, this study showed high survival rates of implants installed by residents of implantology at Faculdade São Leopoldo Mandic using Intraoss implants. The implant failure was not correlated with any of the variables tested.