Cheung L K, Samman N, Pang M, Tideman H
Department of Oral and Maxillofacial Surgery, University of Hong Kong, Hong Kong.
Int J Oral Maxillofac Surg. 1995 Dec;24(6):401-5. doi: 10.1016/s0901-5027(05)80467-9.
In four patients who had osteotomies of the jaws affected by fibrous dysplasia (FD), screws embedded in bone blocks were removed at a re-entry operation 20 months postoperatively. Morphometric measurement of the bone density and calculation of the bone contact percentage were performed. Both normal and dysplastic bone were found to have some direct bone contact with the titanium screws. Although the bone contact percentage was higher in the normal bone when compared with FD, statistics failed to show any significant difference (P < 0.05). The dysplastic bone healed well around the titanium screws without inflammatory reaction and direct dysplastic bone/screw contact was noted. Longer screws should be used in facial FD in order to compensate for the reduced bone contact percentage.
在4例接受纤维性发育异常（FD）影响的颌骨截骨术的患者中，术后20个月再次手术时取出嵌入骨块中的螺钉。进行了骨密度的形态计量学测量和骨接触百分比的计算。发现正常骨和发育异常骨均与钛螺钉有一些直接骨接触。尽管与FD相比，正常骨中的骨接触百分比更高，但统计学上未显示出任何显著差异（P<0.05）。发育异常骨在钛螺钉周围愈合良好，未观察到炎症反应和直接的发育异常骨/螺钉接触。在面部FD中应使用更长的螺钉，以弥补降低的骨接触百分比。
