开(牙合)及个别正常(牙合)人群后牙倾斜度的测量研究  

Posterior Tooth Tipping Between Subjects with Individual Normal Occlusion and the Patients with Openbite

作　　者：张晔[1] 才伟[2] 张澄[1] 贾秀[1] 

机构地区：[1]哈尔滨医科大学附属口腔医院正畸科,150001 [2]黑龙江省电力医院,152086

出　　处：《口腔正畸学》2008年第4期162-165,共4页Chinese Journal of Orthodontics

基　　金：黑龙江省教育厅科学技术研究项目项目编号11521114

摘　　要：目的比较开(牙合)和个别正常(牙合)人群上下颌后牙近中倾斜度。方法选择34例开(牙合)患者和40例个别正常(牙合),拍摄曲面断层片;在曲面断层片上测量开(牙合)患者及个别正常(牙合)人群上下颌第一磨牙,第一、二前磨牙牙长轴的倾斜度并进行统计学分析。结果开(牙合)患者上下颌后牙近中倾斜度明显大于个别正常(牙合)人群,有统计学意义(P<0.0001)。无论开(牙合)还是正常(牙合)人群上下颌后牙的近中倾斜度由大到小依次为:第一恒磨牙、第二前磨牙、第一前磨牙。结论上下颌后牙近中倾斜是开(牙合)形成的机制之一,开(牙合)矫治的重点应放在竖直近中倾斜的上颌后牙及下颌第一磨牙。Objective To compare the tipping difference of posterior teeth between patients with openbite and subjects with individual normal occulusion. Methods Thirty-four patients with openbite and 40 subjects with individual normal occlusion were colteted. The degree of tipping of the the premolars and the first molars was measured, Statistical analysis was performed. Results The degree of the posterior tooth tipping in patients with openbite was greater than that in subjects with individual normal occlusion （P 〈0. 0001）. Conclusion Mesio-inclination of the posterior teeth was related to the openbite.

关 键 词：曲面断层 开(牙合) 个别正常(牙合) 近中倾斜 

分 类 号：R783.5[医药卫生—口腔医学] R322.41[医药卫生—临床医学]