Jaiswal Sudiksha, Subramaniam Tulsi, Gharpure Amit, Bhatavadekar Neel
Private Practice, Pune, Maharashtra, India.
University of Washington School of Dentistry, Seattle, WA, USA.
J Indian Prosthodont Soc. 2018 Oct-Dec;18(4):321-328. doi: 10.4103/jips.jips_111_18.
The objective of this paper was to cephalometrically determine the center of the anteroposterior curve of occlusion, and its relation to standardized landmarks, to establish a suitable occlusal curve for the restoration of maxillary and mandibular arches in a selected local population. To the best of the authors' knowledge, this was the first cephalometric study identifying variations occurring in the anteroposterior curve in this population.
A total of 80 patients (40 males and 40 females) with Angle's Class I occlusion and normal growth pattern were selected. Landmarks were established following tracings on standardized lateral cephalograms. The center of the occlusal curve was determined, and its distance from the nasion, lachryma, and orbitale was statistically compared using ANOVA, and proximal matrix tests in males and females. In addition, a relationship between the depth of occlusal curve and the condyle was established.
The mean distances of the center from nasion, lachryma, and orbitale (statistically significant) were 11.15 mm ± 5.65 mm, 18.68 mm ± 8.6 mm and 33.10 mm ± 10.13 mm for females ( < 0.001) and 9.7 mm ± 4.69 mm, 16.80 mm ± 6.45 mm and 31.22 mm ± 8.51 mm ( < 0.001) for males, respectively. Depth of the curve and distance from the condyle had an inverse corelation.
Nasion is closest to the center of the curve of occlusion in both females and males followed by lachryma and orbitale. Hence, nasion can be considered as a point of reference clinically while determining anteroposterior curve of occlusion.
本文旨在通过头影测量确定咬合前后曲线的中心及其与标准化标志点的关系，为特定当地人群的上颌和下颌牙弓修复建立合适的咬合曲线。据作者所知，这是第一项对头影测量该人群前后曲线变化的研究。
选取80例安氏I类咬合且生长模式正常的患者（40例男性和40例女性）。在标准化侧位头影图上进行描记后确定标志点。确定咬合曲线的中心，并使用方差分析以及对男性和女性进行的近端矩阵检验，统计比较其与鼻根点、泪点和眶下点的距离。此外，还建立了咬合曲线深度与髁突之间的关系。
女性的中心到鼻根点、泪点和眶下点的平均距离（具有统计学意义）分别为11.15 mm±5.65 mm、18.68 mm±8.6 mm和33.10 mm±10.13 mm（<0.001），男性分别为9.7 mm±4.69 mm、16.80 mm±6.45 mm和31.22 mm±8.51 mm（<0.001）。曲线深度与到髁突的距离呈负相关。
在男性和女性中，鼻根点最靠近咬合曲线的中心，其次是泪点和眶下点。因此，在确定咬合前后曲线时，鼻根点可在临床上作为一个参考点。
