成人面部及下颌运动的带教老师指导下的测量。
Faculty-supervised measurements of the face and of mandibular movements on young adults.
机构信息
Restorative and Prosthetic Dentistry, The Ohio State University College of Dentistry, Columbus, Ohio, USA.
Department of Fixed Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
出版信息
J Adv Prosthodont. 2014 Dec;6(6):483-90. doi: 10.4047/jap.2014.6.6.483. Epub 2014 Dec 17.
PURPOSE
The purpose of this study was to determine the average facial proportions and mandibular movement capacity of 316 first-year dental students who carefully recorded them on each other.
MATERIALS AND METHODS
This early exacting clinical experience was closely supervised by the authors in Columbus, Ohio during 1969-70. Five vertical and six horizontal distances were measured on each subject's face. An ala-tragus line and an occlusal line were drawn on the left side of the face to determine if these two lines were parallel. Measurements of mandibular movements involved maximum normal and hinge opening at the incisors and maximum amounts of right, left lateral and protrusive excursions of the mandible.
RESULTS
The ala width and distance between the tips of upper right and left canine cusps averaged (35.2 mm and 34.8 mm) but with very large individual variations. The distance between ala to occlusal plane lines was 29.9 mm at the tragus and 31.3 mm near the ala. The angle between orbitale and ala-tragus averaged 13.6 degrees.
CONCLUSION
The upper lip length was the most variable and the distance between the pupils was the most stable of the eleven facial measurements. The ala-tragus line and the occlusal plane lines were for all practical purposes parallel. Maximum jaw opening averaged 51.2 mm which was 3.0 times larger than maximal hinge opening of 17.2 mm. The maximum right plus left side jaw excursions (9.2 and 9.4 mm) totaled 18.6 mm, 2.3 times more than the 8.0 mm mean maximum forward protrusion.
目的
本研究的目的是确定 316 名一年级牙科学生的平均面部比例和下颌运动能力，这些学生在彼此身上仔细记录了这些数据。
材料和方法
1969-1970 年，作者在俄亥俄州哥伦布市对这一早期严格的临床经验进行了密切监督。在每个受试者的面部测量了五个垂直距离和六个水平距离。在面部的左侧绘制了一个鼻翼-耳屏线和一个咬合线，以确定这两条线是否平行。下颌运动的测量包括切牙的最大正常和铰链开口以及下颌的最大右侧、左侧和前突侧方运动。
结果
鼻翼宽度和右上、左上犬齿尖之间的距离平均为（35.2 毫米和 34.8 毫米），但个体差异很大。鼻翼到咬合平面线的距离在耳屏处为 29.9 毫米，在鼻翼附近为 31.3 毫米。眶下点和鼻翼-耳屏点之间的角度平均为 13.6 度。
结论
上唇长度是最可变的，瞳孔之间的距离是十一个面部测量中最稳定的。鼻翼-耳屏线和咬合平面线在所有实际目的上都是平行的。最大张口平均为 51.2 毫米，是最大铰链开口 17.2 毫米的 3.0 倍。最大右侧加左侧下颌运动（9.2 和 9.4 毫米）总计 18.6 毫米，是 8.0 毫米平均最大前突的 2.3 倍。
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