A meta-analysis of implants in partial edentulism

Area of Science:

• Dental Implantology
• Prosthodontics
• Evidence-Based Dentistry

Background:

• Partially edentulous patients often receive dental implants to support prostheses.
• Assessing the long-term survival of these implants is crucial for clinical decision-making.
• Previous literature shows varied outcomes for implants used in single crowns versus fixed partial dentures.

Purpose of the Study:

• To estimate the survival rates of dental implants used for single crowns (SC) and fixed partial dentures (FPD) in partially edentulous patients.
• To synthesize data from multiple studies using a meta-analytic approach.
• To provide evidence-based survival data for implant-supported prostheses.

Main Methods:

• A meta-analysis was performed on 66 identified studies published between 1986 and 1996.
• Nine studies on single implants and 10 studies on fixed partial dentures met inclusion criteria.
• Life-table analysis was used to calculate annual survival rates for 2686 implants (570 SC, 2116 FPD) with follow-up up to 8 years.

Main Results:

• After 1 year, success rates were at least 85.7% for FPD and 97.2% for SC.
• Pooled survival rates after 6-7 years were 93.6% for FPD and 97.5% for SC.
• Implant survival rates demonstrated high success for both types of restorations.

Conclusions:

• Dental implants supporting single crowns and fixed partial dentures exhibit high survival rates in partially edentulous patients.
• The findings support the long-term efficacy of implant-supported restorations.
• This meta-analysis provides robust survival data for clinicians and researchers in implant dentistry.