Xuan Feng, Lee Chun-Ui, Son Jeong-Seog, Fang Yiqin, Jeong Seung-Mi, Choi Byung-Ho
Graduate Student, Department of Dentistry, Yonsei University Wonju College of Medicine, Wonju, South Korea.
Professor, Department of Dentistry, Yonsei University Wonju College of Medicine, Wonju, South Korea.
J Oral Maxillofac Surg. 2014 Sep;72(9):1660-70. doi: 10.1016/j.joms.2014.04.003. Epub 2014 Apr 13.
Previous studies have shown that the subperiosteal tunneling procedure in vertical ridge augmentation accelerates healing after grafting and prevents graft exposure, with minor postoperative complications. It is conceivable that new bone formation would be greater with the tunneling procedure than with the flap procedure, because the former is minimally invasive. This hypothesis was tested in this study by comparing new bone formation between the flap and tunneling procedures after vertical ridge augmentation using xenogenous bone blocks in a canine mandible model.
Two Bio-Oss blocks were placed on the edentulous ridge in each side of the mandibles of 6 mongrel dogs. The blocks in each side were randomly assigned to grafting with a flap procedure (flap group) or grafting with a tunneling procedure (tunneling group).
The mean percentage of newly formed bone within the block was 15.3 ± 6.6% in the flap group and 46.6 ± 23.4% in the tunneling group.
Based on data presented in this study, when a tunneling procedure is used to place xenogenous bone blocks for vertical ridge augmentation, bone formation in the graft sites is significantly greater than when a flap procedure is used.
以往研究表明，垂直牙槽嵴增高术中的骨膜下隧道技术可加速植骨后的愈合并防止植骨暴露，术后并发症较少。可以想象，由于隧道技术微创，其新骨形成量会比翻瓣技术更多。本研究通过在犬下颌骨模型中使用异种骨块进行垂直牙槽嵴增高术后，比较翻瓣技术和隧道技术之间的新骨形成情况，对这一假设进行了验证。
在6只杂种犬下颌骨的每侧无牙牙槽嵴上放置两块Bio-Oss骨块。每侧的骨块随机分配为采用翻瓣技术植骨（翻瓣组）或采用隧道技术植骨（隧道组）。
翻瓣组骨块内新形成骨的平均百分比为15.3±6.6%，隧道组为46.6±23.4%。
基于本研究提供的数据，当使用隧道技术放置异种骨块进行垂直牙槽嵴增高时，植骨部位的骨形成明显多于使用翻瓣技术时。
