论文部分内容阅读
目的:探讨微手术正畸对骨性Ⅲ类错伴下前牙牙槽骨发育不良的术前去代偿正畸临床策略,检查矫正后下前牙槽骨和牙周组织健康状况的改善程度,提出临床对策,治疗牙槽骨发育不良。方法:从2009—2012间于上海交通大学附属第九人民医院口腔颅颌面科求治的成人连续病例中,选取下前牙区牙槽骨发育不良且有正颌手术适应证的骨性Ⅲ类错畸形为研究对象,按照是否接受微手术正畸治疗进一步分为2组。10例接受者纳入微手术组(G1组),12例不接受者纳入对照组(G2组)。通过锥形束CT(cone beam computed tomography,CBCT)测量2组术前正畸前、后左侧中、侧切牙牙根长度,唇舌侧牙槽骨高度及厚度。采用SAS 8.02软件包对数据进行统计学处理。结果:G1组术前正畸结束,唇侧牙槽骨高度降低2.60 mm,舌侧降低2.22 mm;根尖唇侧厚度增加3.05 mm,舌侧减小0.88 mm,根尖水平总牙槽骨厚度增加2.13 mm,与G2组有显著差异。较之G2组,更好地控制了术前正畸去代偿过程中下前牙牙根的吸收及牙槽骨高度、厚度的丧失。结论:微手术正畸用于下前牙区牙槽骨发育不良的骨性Ⅲ类错术前去代偿,能够有效降低治疗过程中牙周破坏(牙根吸收、牙槽骨吸收、穿孔等)的风险,克服下颌牙槽骨对去代偿竖直牙的限制,提高此类患者术前正畸的安全性。
Objective: To investigate the clinical effect of micro-surgery orthodontics on the preoperative decompensation and orthodontic treatment of skeletal class Ⅲ malocclusion with alveolar bone dysplasia in anterior teeth and to check the improvement of the health status of the anterior alveolar bone and periodontal tissue , Proposed clinical measures to treat alveolar bone dysplasia. Methods: From the continuous cases of adult patients who underwent cranial and maxillofacial treatment at the 9th People’s Hospital Affiliated to Shanghai Jiao Tong University from 2009 to 2009, osteosarcoma Ⅲ with underarm odontogenic dysplasia and orthognathic indications Malocclusion deformity as the research object, according to whether micro-surgery orthodontic treatment is further divided into two groups. Ten recipients were included in the micro-surgery group (G1 group) and 12 non-recipients were included in the control group (G2 group). The length of the root of lateral incisor and the height and thickness of lingual alveolar bone were measured by cone beam computed tomography (CBCT) before and after orthodontics. Data was statistically processed using SAS 8.02 software package. Results: In group G1, the height of alveolar bone decreased 2.60 mm in alveolar bone and 2.22 mm in alveolar bone. The thickness of apical labial edge increased 3.05 mm and the lingual side decreased 0.88 mm. The total apical alveolar bone thickness An increase of 2.13 mm, there are significant differences with the G2 group. Compared with the G2 group, better control of the preoperative orthodontic compensation process of anterior teeth root absorption and alveolar bone height and thickness loss. Conclusions: Micro-orthodontics is used to compensate for skeletal class Ⅲ malocclusion in lower anterior alveolar region, which can effectively reduce periodontal damage (root resorption, alveolar bone resorption, perforation, etc.) ) To overcome the limitations of mandibular alveolar bone to compensate for vertical teeth and improve the safety of orthodontic surgery in such patients.