论文部分内容阅读
目的探索快速扩弓及非扩弓对前方牵引治疗早期安氏Ⅲ类骨性错畸形的影响。方法选择2008年1月至2011年7月在该院口腔科就诊的安氏Ⅲ类骨性错畸形青少年患者22例,分为扩弓组与非扩弓组各11例,扩弓组采取腭上扩弓配合前方牵引,非扩弓组采取非扩弓配合前方牵引治疗,治疗前后摄头颅X射线投照测量分析,评价并比较两组疗效。结果两组患者上齿槽座点角(SNA)、上齿槽座点-鼻根点-下齿槽座点角(ANB)、上齿槽座点的连线交角或垂直距离(U1-NA)均较治疗前明显增大,上颌骨得到生长、发育和前移,而下齿槽座点角(SNB)较治疗前明显减小,下颌骨生长得到控制,侧面外貌得到改善。两组患者治疗前后比较,差异均有统计学意义(P<0.05);扩弓组头颅X射线投照测量结果与非扩弓组比较,差异无统计学意义(P>0.05)。结论前方牵引是治疗安氏Ⅲ类骨性错畸形的有效手段,早期矫治效果更佳,腭上扩弓有助于增强疗效,但为非必须性的,应有针对性地选择,避免不良反应的发生。
Objective To explore the effects of rapid and non-extended dilation on the early malocclusion of Class Ⅲ skeletal malformations under anterior traction. Methods Twenty-two patients with Class Ⅲ skeletal malformation deformity who were admitted to the department of stomatology from January 2008 to July 2011 were selected and divided into 11 cases in each group. Palatal expansion combined with anterior traction, non-anterior descending arch group with non-expanding anterior arch traction therapy, before and after treatment of craniocerebral X-ray projection measurement analysis, evaluation and comparison of the two groups. Results In the two groups, the SNA, ANB, ANT, U1-NA ) Were significantly higher than before treatment, the maxillary bone growth, development and advancement, while the lower alveolar niche (SNB) was significantly reduced compared with before treatment, mandibular growth was controlled, lateral appearance improved. There was significant difference between the two groups before and after treatment (P <0.05). There was no significant difference between the two groups in the measurement of skull X-ray projection and non-expansion group (P> 0.05). Conclusion Anterior traction is an effective method for the treatment of Class Ⅲ skeletal malformations. Early correction is more effective and palatal expansion is helpful to enhance the curative effect. However, it is not necessary and should be targeted to avoid the bad The reaction occurred.