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目的:制作一种机械性和功能性组合的改良式上颌垫式矫治器,并应用于因唇颊侧肌压力和乳尖牙磨耗不足造成的AngleⅢ类反的治疗。方法:选择乳牙、替牙和恒牙早期,因唇颊侧肌压力和乳牙磨耗不足造成的AngleⅢ类反患者16例,配戴机械性和功能性组合的改良式上颌垫式矫治器1年,并拍摄治疗前后头颅定位侧位片,用Steiner分析法和配对t检验统计方法,并用SPSS20.0软件处理统计数据。结果:临床观察对因唇颊侧肌压力和乳尖牙磨耗不足造成的牙性、齿槽性、功能和轻度骨性AngleⅢ类反疗效显著。统计数据显示:ANB、U1-NA和U1-NA距治疗前后比较差异有统计学意义(P<0.01);SNA、GoGn-Sn、N-A-Pg和G-Sn-Pg治疗前后比较差异有统计学意义(P<0.05),与临床观察基本一致。结论:该改良式上颌垫式矫治器,治疗因唇颊侧肌压力和乳尖牙磨耗不足造成的的牙性、齿槽性、功能和轻度骨性AngleⅢ类反,特别对一侧后牙反,配合调合尖牙可解除轻度偏颌,面型改变明显,疗效显著。
OBJECTIVE: To create a modified maxillary otograft appliance with mechanical and functional combination and to apply Angle ¢ õ-type anti-otreatment due to buccal pressure and maxillary abrasion. Methods: In the early stage of decidua, dentition and permanent dentition, 16 cases of AngleⅢ anti-type patients, which were caused by the buccal pressure of the labia and the wear of the deciduous teeth, were treated with modified maxillary and mandibular paddling combined with mechanical and functional methods 1 year, before and after treatment of cranial positioning lateral radiographs, with Steiner analysis and paired t test statistical methods, and statistical data using SPSS20.0 software. RESULTS: The clinically significant effect of the Class III anti-otitis on dentine, alveolar, functional, and mild skeletal Class A caused by insufficient buccal pressure and canine wear was observed. The statistical data showed that ANB, U1-NA and U1-NA had statistical significance before and after treatment (P <0.01), there were statistically significant differences between before and after treatment of SNA, GoGn-Sn, NA-Pg and G-Sn-Pg Significance (P <0.05), consistent with the clinical observation. Conclusions: This modified maxillary pad appliance treats odontology, cogging, function and mild skeletal Class III responses due to buccal pressure and maxillary abrasion, particularly on one side of the posterior teeth Anti , with the coordination of fangs to relieve mild partial jaw, facial changes were significant, significant effect.