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本文采用自行设计的牙嵴顶间线角测量尺,对80副已上绞链(牙合)架的无牙颌领模型进行了牙嵴顶间线角的测定。并按本文所划定的线角范围来划分牙嵴关系。结果发现:(1)无牙颌以正常牙嵴关系为最多。在反(牙合)牙嵴关系中,以第二磨牙区为最多,反(牙合)程度也最大;双尖牙区最少。在超(牙合)牙嵴关系中,以双尖矛区为最多;第二磨牙区最少,超(牙合)程度也最小。(2)无牙颌牙嵴关系不存在性别上的差异。(3)线角的均数,从切牙区至第二磨牙区依次递减。(4)牙嵴顶间的水平距是影响线角大小的主要因素。
In this paper, the maxillary crest angle was measured by using the self-designed dental crest angle measuring ruler. And according to the scope of this article to define the angle of the ridge relationship. The results showed: (1) The edentulous jaw to the normal relationship between the maxilla. In the anti (occlusal) ridge relationship, the second molar area is the largest, anti (occlusal) degree is also the largest; bidentata area at least. In the super (occlusal) of the relationship between the crista, the largest double-lancet area; the second molar area at least, the degree of super-occlusion is also the smallest. (2) There is no gender difference in the relationship of the denture ridge. (3) The average angle of line, from the incisor area to the second molar area in descending order. (4) The horizontal distance between the crest of crest is the main factor affecting the size of line angle.