engleski

8.5 years study of accelerated single implant placement and loading

Background: Single tooth replacement with a dental implant has become an increasingly favored treatment option. High success rates, progress in therapy and technical innovations provided reasoning for accelerated implant protocols demanded by patients. Still, the clinical outcomes are inconclusive relative to varying placement and loading protocols. Aim: Assessment of predictability and success rates of immediate and early loading protocols of immediate and early placed implants and to investigate whether there is a difference in success rates, survival rates, and peri-implant parameters between different treatment protocols. Methods: 102 patients were treated with 138 implant-born single crowns over a period of 8.5 years. Clinical protocols involved immediate or early loading of implants placed according to three protocols: immediate placement in extraction sockets, early implantation (4–8 weeks post extraction)and implantation in healed sites. Clinical, radiologic, and esthetic parameters were recorded to assess treatment outcomes. Results: The initial survival rates after 1 year of immediately and early loaded implants were 97.6% and 98.1% respectively. For periods of 1–8.5 years, the survival rate was 96.9% and 97.3%. However, for immediately placed implants with immediate restoration and occlusal loading, the survival rate was 87%. Mean crestal bone loss was 0.26 mm at 3 years and 0.31 mm at 5 years. Mucosal recession at immediately and early placed and immediately restored implants was <0.5 mm. ISQ values increased on the average by 8.6 between immediate and definitive restoration placement. Conclusions and clinical implications: This study evaluated the concept of accelerated implant placement and loading protocols. It demonstrated mostly successful tissue integration and stable bone-crest levels around implant-abutment interfaces. The 1–8.5-year follow-up revealed pleasing esthetic outcomesand stable soft tissues. However, the concept of immediate implant placement in extraction sockets combined with immediate restoration did prove a significant hazard with most implants lost in this treatment protocol group.

single implant placement; immediate loading; early loading

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