摘要
目的探讨骨性Ⅲ类错畸形患者前段牙弓的形态特征,为临床诊断和治疗提供理论依据。方法选择骨性Ⅲ类错畸形患者52例为实验组,个别正常人63例为对照组,利用锥形束CT扫描颌面部,将扫描后图像导入Mimics 10.01图像处理软件分别测量与前段牙弓形态特征有关的9个测量项目。结果骨性Ⅲ类错畸形患者组上颌前段牙弓宽度和深度均有小于个别正常人组的趋势、角度也小于正常人;下颌前段牙弓的宽度、深度及角度测量值与正常人差异均无统计学意义。骨性Ⅲ类错畸形患者的上下颌牙弓宽度差值和深度差值小于正常人,上下颌牙弓前段角度差值小于正常人。结论骨性Ⅲ类错畸形患者的上下颌牙弓前段弓形不协调,上颌前段弓形丰满度相对不足,上颌前段牙弓宽、深度发育不足,下颌前段牙弓宽、深度正常。
Objective To study the characteristics of the anterior dental arch form of skeletal Class HI malocclusion and provide references for diagnosis and treatment plan. Methods Experimental group consists 52 cases of skeletal Class HI malocclusion and control group consists 63 cases of individual normal occlusion. Cone beam computed tomography （CBCT） scans of samples were taken and were used to measure with anterior dental arch of 9 measurements through Mimics 10.01. Results Compared with control group, maxillary anterior segments of the dental arch widths and depths have the tendency of decrease, maxillary anterior segments of the dental arch angles are smaller in skeletal Class Ⅲ malocclusion. Mandibular anterior dental arch are similar in two groups about widths, depths and angles. Differences between maxillary and mandibular canine widths and canine depths are smaller with skeletal Class Ⅲ malocclusion. And differences between maxillary and mandibular anterior segment angles are also smaller with skeletal Class m malocclusion. Conclusion In skeletal Class m malocclusion, the incoordination performance existed in the anterior dental arch form of maxillary and mandibular. The fullness of anterior dental arch form are inadequate. And the maxillary anterior dental arch widths and depths are insufficient.
出处
《国际口腔医学杂志》
CAS
2013年第2期156-159,161,共5页
International Journal of Stomatology
关键词
前段牙弓形态
牙弓宽度
牙弓深度
骨性Ⅲ类错噁畸形
锥形束CT
anterior arch form
arch width
arch depth： skeletal Class IU malocclusion： cone beam com-puted tomography
