[摘要]目的：探究超声骨刀骨皮质切开术对骨性Ⅱ类错牙合畸形患者正畸治疗时间、牙周临床指数的影响。方法：回顾性分析2020年2月-2023年1月收治的骨性Ⅱ类错牙合畸形患者的临床资料，随机从单纯正畸治疗中抽取51例纳入对照组，从联合超声骨刀骨皮质切开术中抽取51例纳入观察组。记录患者牙排齐时间、牙间隙关闭时间；记录治疗后牙位置（U1I-CP、U1R-CP）；记录治疗前后软组织变化量（Sn-HP、Sn-CP、NLA、Ls-HP、Ls-CP）、硬组织变化量（UARA、SNA、Sd-CP、Sd-HP、A-HP、A-CP）；记录两组患者的牙根及牙槽骨吸收量及治疗后咬合力。结果：观察组牙排齐时间、牙间隙关闭时间均低于对照组（P＜0.05）；两组患者U1I-CP、U1R-CP均显著升高，且观察组高于同期对照组（P＜0.05）；两组患者Sn-HP、Sn-CP、Sd-HP、A-HP、A-CP变化量差异无统计学意义（P＞0.05），观察组NLA、Ls-HP、Ls-CP、UARA、SNA、Sd-CP变化量均高于对照组（P＜0.05）；观察组牙根及牙槽骨吸收量低于对照组（P＜0.05）；两组咬合力均显著升高，且观察组高于对照组（P＜0.05）。结论：正畸治疗联合超声骨刀骨皮质切开术是治疗骨性Ⅱ类错牙合畸形的有效手段，能够加速患者牙齿的移动，促进患者软硬组织改善，有助于获得理想的面部美学效果。

[关键词]骨性Ⅱ类错牙合畸形；超声骨刀骨皮质切开术；口腔正畸；面部美学

[中图分类号]R783.5" " [文献标志码]A" " [文章编号]1008-6455（2025）06-0179-04

Influence of Ultrasonic Bone Knife Corticotomy on Orthodontic Treatment Time and Periodontal Clinical Index in Patients with Skeletal Class Ⅱ Malocclusion

HAN Xue， ZHANG Haolin， SI Ling， SHI Lin， ZHAO Huan， LI Fangfei， CUI Lei

（ Department of Stomatology， the Second Outpatient Department of Direct Departments under Hebei Province Government， Shijiazhuang 050051， Hebei， China ）

Abstract： Objective" To explore the influence of ultrasonic bone knife corticotomy on orthodontic treatment time and periodontal clinical index in patients with skeletal Class Ⅱ malocclusion. Methods" The clinical data of patients with skeletal Class Ⅱ malocclusion from February 2020 to January 2023 were retrospectively analyzed. 51 patients with simple orthodontic treatment were included in control group， and 51 patients with ultrasonic bone knife corticotomy were enrolled as observation group. The tooth alignment time and interdental space closure time， tooth positions （U1I-CP， U1R-CP） after treatment， soft tissue changes （Sn-HP， Sn-CP， NLA， Ls-HP， Ls-CP） and hard tissue changes （UARA， SNA， Sd-CP， Sd-HP， A-HP， A-CP） before and after treatment， tooth absorption volume and occlusal force after treatment were recorded in both groups. Results" The tooth alignment time and interdental space closure time in observation group were shorter than those in control group （P＜0.05）. The U1I-CP and U1R-CP in the two groups of patients were significantly increased， and the two indicators in observation group were higher compared with those in control group （P＜0.05）. There were no statistical differences in the changes of Sn-HP， Sn-CP， Sd-HP， A-HP and A-CP between the two groups （P＞0.05）， and the changes of NLA， Ls-HP， Ls-CP， UARA， SNA and Sd-CP were higher in observation group than those in control group （P＜0.05）. The tooth absorption volume in observation group was less compared to control group （P＜0.05）. The occlusal force was risen significantly in both groups， and the observation group had higher occlusal force （P＜0.05）. Conclusion" Orthodontic treatment combined with ultrasonic bone knife corticotomy is an effective method for the treatment of skeletal Class Ⅱ malocclusion. It can accelerate the tooth movement， and promote the improvement of soft and hard tissues of patients， and it is helpful to obtain ideal facial aesthetic effect.

Key words： skeletal Class Ⅱ malocclusion; ultrasonic bone knife corticotomy; orthodontic treatment; facial aesthetics

错牙合畸形属于发育畸形中的一种，骨性Ⅱ类错牙合是临床常见的第二位错牙合畸形，患病率为20%以上[1]，主要表现为下颌后缩、上颌前突以及垂直平面的差异。在大多数骨性Ⅱ类错牙合畸形病例中，下颌后缩是最普遍的特征，不仅影响患者咀嚼功能，而且阻碍牙齿正常发育，影响面部美观[2]。……