摘要
为了研究老年人牙齿及其周围组织变化的Ｘ线表现，作者对４５例老年人健康牙齿的平行Ｘ线片进行观测，以４０例青年人的作为对照组，从Ｘ线片上测量了下颌后牙髓室、根管和牙槽嵴的多项指标，并评定了嵴顶区骨硬板指数。结果发现与青年人健康牙齿的Ｘ线片比较，老年人牙齿髓室的宽度和高度、根管径均明显缩窄，根管壁明显增厚，牙槽嵴高度与根长之比显著下降，嵴顶区骨硬板消失者显著增多。该研究结果为临床老年人牙齿疾病Ｘ线片研究提供了有益的资料。
Radiographs of mendibular first molars in 45 patients aged more than 60 year old were measured on several parameters of pulpal chamber, root canal as well as alveolar crest, and compared with those in 40 young people in order to study the radiographic manifestations of the healthy odontal and periodontal tissues in elderly people. Results shown that in aged people the average width and height of the pulpal chamber and the diameter of root canal were narrower; the root canal walls were thicker; the relation between the height of alveolar crest and the root length reduced significantly; and the lamina dura on the alveolar crest disappeared more common. Findings lay a preliminary foundation for investigation on radiographic manifestations of involved teeth in gerontology.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
1997年第3期155-157,共3页
Chinese Journal of Stomatology
