Polson A, Caton J, Polson A P, Nyman S, Novak J, Reed B
J Periodontol. 1984 Apr;55(4):197-202. doi: 10.1902/jop.1984.55.4.197.
The present study was undertaken since conflicting evidence exists regarding the effect of such tooth movement on levels of connective tissue attachment. Localized intrabony pockets were produced around isolated incisors in four rhesus monkeys. The root surfaces were planned to the level of the bone at the base of the angular bony defects. An oral hygiene regime was begun and continued for the remainder of the study. The experimental teeth were moved orthodontically into, and through, the original area of the intrabony defect. Two months after cessation of active tooth movement, block specimens were removed for histologic analysis. Control specimens comprised those teeth with induced periodontal defects, but without tooth movement. In specimens not subjected to tooth movement, angular bony defects were present and epithelium lined the root surface to the apical extent of instrumentation. The alveolar bone adjacent to the orthodontically moved teeth no longer had angular defect morphology. On the pressure side, epithelium lined the root surface, was interposed between root surface and bone and terminated at the apical limit of root instrumentation. On the tension side, the crest of the bone was located apical to the level of root planing, and epithelium lined the instrumented portion of the root surface. It was concluded that orthodontic tooth movement into intrabony periodontal defects was without effect upon the levels of connective tissue attachment.
由于关于这种牙齿移动对结缔组织附着水平的影响存在相互矛盾的证据，因此进行了本研究。在四只恒河猴的单个切牙周围制造局部骨内袋。将牙根表面修整至角形骨缺损底部的骨水平。开始并在研究的剩余时间内持续进行口腔卫生措施。将实验牙齿正畸移入并穿过骨内缺损的原始区域。在主动牙齿移动停止两个月后，取出块状标本进行组织学分析。对照标本包括那些有诱导性牙周缺损但没有牙齿移动的牙齿。在未进行牙齿移动的标本中，存在角形骨缺损，上皮覆盖牙根表面至器械操作的根尖范围。与正畸移动牙齿相邻的牙槽骨不再具有角形缺损形态。在压力侧，上皮覆盖牙根表面，介于牙根表面和骨之间，并在牙根器械操作的根尖界限处终止。在张力侧，牙槽嵴位于牙根修整水平的根尖侧，上皮覆盖牙根表面的器械操作部分。得出的结论是，正畸牙齿移入骨内牙周缺损对结缔组织附着水平没有影响。
