唇弓腭托改良式前方牵引器矫治替牙期前牙反  

Treatment of ClassⅢ malocclusion with oral modified protracting appliance in mixed dentition

作　　者：何玉宏[1] 刘宁宁[2] 席兰兰[1] 赵萍[1] 

机构地区：[1]济南军区总医院口腔科,山东济南250031 [2]山东省交通医院五官科,山东济南250031

出　　处：《实用医药杂志》2010年第2期114-116,共3页Practical Journal of Medicine & Pharmacy

摘　　要：目的研究替牙期儿童上颌发育不足而致前牙反的治疗方法。方法选择13例(年龄8～11.5岁,平均9.6岁)替牙列期骨性反患者,下颌制作垫解除前牙锁结关系,上颌应用唇弓腭托改良式前方牵引装置进行治疗。在治疗前、后拍摄头颅侧位定位片进行测量分析。结果治疗3～6个月,所有患者均解除反关系,上颌牵引继续维持2～3个月,上下颌后牙建立咬合关系,前牙达正常覆盖,患者侧貌得到良好的改善。头影测量分析SNA平均增大2.46°、SNB减小1.27°、ANB增大3.73°、Wits值增大3.43mm,变化均具有非常显著性差异(P<0.01);L1-MP、NLA、ULP变化具有显著性差异(P<0.05),而PP-SN、U1-SN、LLP变化不具有统计学差异(P>0.05)。结论唇弓腭托改良式前方牵引装置能有效地促进替牙期患者上颌骨的发育,是前牙反的一种行之有效的治疗方法。Objective To study a new treatment method of Class Ⅲ malocclusion in mixed dentition. Method Thirteen skeletal Class m patients with an average age of 9.6 years old were selected and treated with oral modified protracting appliance. Lateral cephalometric radiographs were taken before and after treatment. The data were measured based on X-ray and analyzed. Result After 3 to 6 months protracting and 2 to 3 months retaining. All the patients reestablished fine molar relationship and obtained normal bite overjet. Facial profiles improved greatly. The SNA increased 2.46 degrees; ANB increased 3.73 degrees; Wits value increased 3.43mm; SNB decreased 1.27 degrees （P〈0.01）. The changes of L1-MP,NLA and ULP also had statistically significant difference （P〈0.05）. But the changes of PP-SN,U1-SN and LLP had no statistically significant difference （P〉0.05）. Conclusion Oral modified protracting appliance with mask protraction could promote maxilla forward development effectively and it is an effetive method of treating Class Ⅲ malocclusion in the mixed dentition.

关 键 词：替牙期 骨性前牙反[牙合] 上颌前方牵引 

分 类 号：R783[医药卫生—口腔医学]