PERI IMPLANT BONE LOSS AROUND SINGLE AND MULTILE PROSTHESIS-A SYSTEMATIC REVIEW

Abstract

Purpose: The objective of this systematic review was to assess and compare the marginal bone loss around implants supporting single fixed prostheses and multiple-unit screw-retained prostheses. Materials and Methods: The literature was searched electronically to identify studies in which the marginal peri-implant bone loss around single-implant prostheses and multiple-implant prostheses was evaluated radiographically. The random-effects method was used to obtain estimates of marginal peri-implant bone loss (means and 95% confidence intervals [CIs]. Results: Of the 188 studies identified by a preliminary search, 28 fulfilled the inclusion criteria: 12 were related to single-implant prostheses and 16 to multiple-implant screw retained fixed prostheses. The mean marginal peri-implant bone loss was 1.08 mm (95% CI, 0.253 to 0.283 mm) for multiple-implant retained prostheses and 0.88 mm (95% CI, 0.519 to 0.593 mm) for single-implant prostheses. Conclusion: The mean marginal bone loss is less in single implant supported prosthesis (0.88 mm) compare to multiple implant supported prosthesis (1.08 mm).