Computerized axiographic evaluation of the changes in sagittal condylar path inclination with dental and physical development
Computerized axiographic evaluation of the changes in sagittal condylar path inclination with dental and physical development
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DOI：
10.1016/j.ajodo.2007.01.030
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发表时间：
2009-01-01
影响因子：
3
通讯作者：
Muessig, Dieter
中科院分区：
文献类型：
--
作者：
Baqaien, Mouayyad A.;Barra, Jorge;Muessig, Dieter
简介：本研究的目的是量化最大下颌前突期间矢状髁突路径倾斜度的变化与整个混合牙列期的牙齿和身体发育阶段的关系。方法：将 161 名年龄为 6.5 至 13 岁的儿童按牙齿分期分为 3 个亚组：无前牙引导的早期混合牙列组、有前牙引导的早期混合牙列组和晚期混合牙列组。对照组由 41 名成年人组成（平均年龄 28 岁）。所有受试者都有正常的颞下颌关节功能和中性咬合。使用超声波下颌跟踪系统记录五次最大前缩运动，该系统由自动计算髁突路径倾斜角（CPIA）的软件支持。结果：3个亚组儿童之间存在显着差异。在晚期混合牙列亚组中，女孩左侧的髁突路径明显比男孩更陡。在前牙引导早期混合牙列亚组中，右侧 CPIA 明显大于左侧 CPIA。线性回归分析显示，髁突路径倾斜度与身高和体重均呈正相关，尽管相关性在统计上较弱。结论：这些发现表明 CPIA 随着咬合的成熟而增加。 （Am J Orthod Dentofacial Orthop 2009；135：88-94）
Introduction: The aim of this study was to quantify the changes in sagittal condylar path inclination during maximum mandibular protrusion in relation to the stage of dental and physical development throughout the mixed dentition period. Methods: A total of 161 children, 6.5 to 13 years of age, were divided by dental stage into 3 subgroups: early mixed dentition without anterior guidance, early mixed dentition with anterior guidance, and late mixed dentition. The control group consisted of 41 adults (mean age, 28 years). All subjects had normal temporomandibular joint function and neutral occlusion. Five maximum protrusion-retrusion movements were recorded by using an ultrasound jaw-tracking system supported with software that automatically calculated the condylar path inclination angle (CPIA). Results: Significant differences were found between the 3 subgroups of children. In the late mixed dentition subgroup, girls had significantly steeper condylar paths on the left side than boys. In the early mixed dentition with anterior guidance subgroup, the right CPIA was significantly larger than the left CPIA. Linear regression analysis showed that condylar path inclination was positively correlated with both body height and weight, although the correlation was statistically weak. Conclusions: These findings indicate that CPIA increases with the maturation of occlusion. (Am J Orthod Dentofacial Orthop 2009; 135: 88-94)