Choi Byung-Ho, Li Jingxu, Kim Han-Sung, Ko Chang-Yong, Jeong Seung-Mi, Xuan Feng
Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Korea.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 May;105(5):561-5. doi: 10.1016/j.tripleo.2007.08.020. Epub 2008 Mar 4.
The purpose of this study was to compare the bone healing around submerged and nonsubmerged implants installed in a canine mandible model using a flapless technique.
Bilateral, edentulated, flat alveolar ridges were created in the mandibles of 6 mongrel dogs. After 3 months of healing, 2 implants were placed in 1 side by either miniflap submerged or flapless nonsubmerged procedures. After healing for an additional 8 weeks, microcomputerized tomography at the implantation site was performed. Osseointegration was calculated as the percent of the implant surface in contact with bone. Bone height was measured in the peri-implant bone.
The mean osseointegration was greater (64.7%) in miniflap submerged sites than in the flapless nonsubmerged sites (56.8%; P < .05). The mean peri-implant bone height was greater (11.0 mm) in the miniflap submerged sites than in the flapless nonsubmerged sites (10.1 mm; P < .05).
This study demonstrated that the submerged procedure was more effective than the nonsubmerged procedure in improving implant anchorage in the early phase after implant placement.
本研究的目的是比较使用无瓣技术植入犬下颌骨模型中的潜入式和非潜入式种植体周围的骨愈合情况。
在6只杂种犬的下颌骨中创建双侧无牙、扁平牙槽嵴。愈合3个月后，通过微型瓣潜入式或无瓣非潜入式手术在一侧植入2枚种植体。再愈合8周后，对植入部位进行微型计算机断层扫描。骨结合率以种植体与骨接触的表面百分比计算。测量种植体周围骨的高度。
微型瓣潜入式种植部位的平均骨结合率（64.7%）高于无瓣非潜入式种植部位（56.8%；P < .05）。微型瓣潜入式种植部位的平均种植体周围骨高度（11.0 mm）高于无瓣非潜入式种植部位（10.1 mm；P < .05）。
本研究表明，在种植体植入后的早期阶段，潜入式手术在改善种植体固位方面比非潜入式手术更有效。
