To evaluate the effect of anodized dental implant surface on cumulative implant survival and success. A systematic review and meta-analysis

BACKGROUND: There have been certain apprehensions regarding the use of surface-modified dental implants due to peri-implant infection and crestal bone loss over the years. Thus, this review aims to evaluate the long-term effect of anodized implant surface on cumulative implant survival (CSR) and success rates in relation to marginal bone loss (MBL). MATERIALS AND METHODS: Systematic electronic search was done using two databases, PubMed and Embase to assess the potentially relevant records from January 2008 to October 2019. Publications reporting cumulative survival and success rates with anodized dental implants were identified. Screening for duplicate articles and extraction of data was carried out to formulate evidence tables. Meta-analysis was conducted following PRISMA guidelines. RESULTS: Out of 217 observational clinical studies, 8 studies were selected based on predefined selection criteria. The summary estimate for the included studies for CSR was reported as 0.98 (95% confidence interval [CI]: 0.96; 0.99). The heterogeneity (I(2) = 37.3%) among these studies was found to be statistically nonsignificant (P = 0.1314). The mean values of MBL after the implant insertion were 0.84 mm at 0–1 year and 1.05mm by the end of follow-up period. This data were provided by five studies only. The mean difference of the analyzed studies came out to be 0.49 mm with a 95% CI (−0.22; 1.19). The heterogeneity (I(2) = 97%) for these studies was statistically significant with P < 0.01. CONCLUSION: The anodized dental implants have demonstrated long-term survival and success rates in terms of clinical outcomes.