Comparison of external and internal implant-abutment connections for implant supported prostheses. A systematic review and meta-analysis

Conclusion Internal connections had lower marginal bone loss when compared to external connections. However, the implant-abutment connection had no influence on the implant’s survival and complication rates. Based on the GRADE approach the evidence was classified as very low to moderate due to the study design, inconsistency, and publication bias. Thus, future research is highly encouraged. Clinical significance Internal connection implants should be preferred over external connection implants, especially when different risk factors that may contribute to increased marginal bone loss are present.
Source: Journal of Dentistry - Category: Dentistry Source Type: research