Yerleştirme Sonrası İyileşme Başlığı ile Kapatılan İmplantlarda İlk Yılda Marjinal Kemik Kaybı Daha Az mı Görülür?

Abstract

Background: Early peri-implant crestal bone loss during the healing period and the first year on function, is often greater than the bone loss occurring in the following years. Several factors affecting marginal bone loss have been described; such as surgical trauma, flapped or flapless procedures, occlusal overload, microgap and implant crest module. The aim of this study; was to compare the amount of first year peri-implant bone loss in implants closed with cover screw or healing cap. Material and Methods: Patients with same brand, posterior single tooth implants included in this prospective study and divided into two groups. In group I, after implant placement healing cap was placed while in group II, cover screw was placed before primary closure. Panoramic radiographs, taken before and after the implant surgery and after 1 year follow up, were used in bone loss evaluations. Peri-implant bone loss measurements were performed digitally in computer assisted software programme. Results: Thirty implants included in the study with fourteen implants in group I and sixteen implants in group II. There were no perioperative or postoperative complications and no implant failure in all patients. After the first year, mean marginal bone loss was 0.7014 mm (0.2477 mm standard deviation) in group I and 1.3156 mm (0.0943 mm standard deviation) in group II. This 0.6142 mm difference was found statistically significant. Conclusion: Placing healing cap instead of cover screws may prevent periosteal tissue pressure on the crestal bone and reduce the amount of marginal peri-implant bone in the first year.