Choi B H, Yoo J H, Sung K J
Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Kangwon-Do, South Korea.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1996 Oct;82(4):375-8. doi: 10.1016/s1079-2104(96)80300-3.
To assess the postoperative fate of bone trapdoors in patients with a trapdoor in the facial wall of the maxillary sinus that was replaced after removal of sinus disease.
Twenty patients were studied. In 10 patients (group A) the trapdoor was made as a free bone graft; in the other 10 patients (group B), an osteoperiosteal trapdoor was made. The postoperative fate of bone trapdoors was studied by means of computed tomography.
In group A there was poor bony consolidation at the trapdoors' junction with the surrounding bone and a significantly reduced density of the osteotomized bone. In two of the group A patients there was a partial loss of the trapdoor. In group B, however, bony consolidation took place in that all the trapdoors were completely connected again to the surrounding bone and there was no reduction of the bone density.
The results indicate that a trapdoor with a periosteal pedicle appears to be more reliable than one without a periosteal pedicle.
评估上颌窦前壁骨活板门在鼻窦疾病切除后复位患者中的术后转归。
对20例患者进行研究。10例患者（A组）制作游离骨移植活板门；另外10例患者（B组）制作骨膜骨活板门。通过计算机断层扫描研究骨活板门的术后转归。
A组活板门与周围骨连接处骨愈合较差，截骨骨密度显著降低。A组2例患者活板门部分缺失。然而，B组发生了骨愈合，所有活板门均再次与周围骨完全连接，且骨密度未降低。
结果表明，带骨膜蒂的活板门似乎比不带骨膜蒂的活板门更可靠。
