INTRODUCTION: Many studies have dealt with the clinical outcome of oral implants, yet none applied a randomized split-mouth design for a long-term follow-up of similar implant systems. AIM: To evaluate two oral implant systems with different surface characteristics in a randomized split-mouth design and to radiologically analyse peri-implant bone level and density over an up to 16-year period. MATERIALS AND METHODS: The study comprised clinical and radiographic records of 18 partially edentulous patients treated with both implant types randomly placed in either left or right jaw sides. Outcome was evaluated over time. RESULTS: Clinical and radiographic parameters showed no significant differences over time for both systems. Ten years after implant placement, a significantly increasing peri-implant bone density was noted, while Periotest values were found to be significantly decreasing. Fifteen years after implant loading, mean bone loss was 0.02 mm (range -1.15 to 1.51; SD 0.45) for Astra Tech® implants (n=24) and 0.31 mm (range -0.98 to 2.31; SD 0.69) for Brånemark® implants (n=23). CONCLUSIONS: The study failed to demonstrate significant differences in the outcome of the peri-implant bone for two implant systems with different surface characteristics. The marginal bone level around oral implants changed <0.5 mm after 15 years of loading.
RCT Entities:
INTRODUCTION: Many studies have dealt with the clinical outcome of oral implants, yet none applied a randomized split-mouth design for a long-term follow-up of similar implant systems. AIM: To evaluate two oral implant systems with different surface characteristics in a randomized split-mouth design and to radiologically analyse peri-implant bone level and density over an up to 16-year period. MATERIALS AND METHODS: The study comprised clinical and radiographic records of 18 partially edentulouspatients treated with both implant types randomly placed in either left or right jaw sides. Outcome was evaluated over time. RESULTS: Clinical and radiographic parameters showed no significant differences over time for both systems. Ten years after implant placement, a significantly increasing peri-implant bone density was noted, while Periotest values were found to be significantly decreasing. Fifteen years after implant loading, mean bone loss was 0.02 mm (range -1.15 to 1.51; SD 0.45) for Astra Tech® implants (n=24) and 0.31 mm (range -0.98 to 2.31; SD 0.69) for Brånemark® implants (n=23). CONCLUSIONS: The study failed to demonstrate significant differences in the outcome of the peri-implant bone for two implant systems with different surface characteristics. The marginal bone level around oral implants changed <0.5 mm after 15 years of loading.
Authors: Tomas Albrektsson; Pentti Tengvall; Luis Amengual-Peñafiel; Pierluigi Coli; Georgios Kotsakis; David L Cochran Journal: Clin Implant Dent Relat Res Date: 2022-05-31 Impact factor: 4.259
Authors: László Márk Czumbel; Beáta Kerémi; Noémi Gede; Alexandra Mikó; Barbara Tóth; Dezső Csupor; Andrea Szabó; Sándor Farkasdi; Gábor Gerber; Márta Balaskó; Erika Pétervári; Róbert Sepp; Péter Hegyi; Gábor Varga Journal: PLoS One Date: 2019-05-03 Impact factor: 3.240