抄録
The purpose of this study was to evaluate the partially edentulous arch and occlusal contact area in new patients aged ≥ 80 years on initial consultation. The subjects were new patients, aged ≥ 80 years, who consulted our dental clinic between January 7, 2008 and December 28, 2015.
The following results were obtained: 1）The number of new patients was 262, and the male-to-female ratio was 1：1.8. There was a slight increase in the number of new patients aged ≥ 80 years. 2）The mean number of residual teeth was 11.1. Patients with ≥ 20 residual teeth accounted for > 20％. 3）According to Eichner’s classification, the grade was evaluated as C in 131 patients （50.0％）, B in 92 （35.1％）, and A in 39 （14.9％）. 4）The most common diagnosis of chief complaint was denture incompatibility/fracture （38.2％）, followed by periodontitis （14.1％）. 5）The number of subjects who had continuously visited our hospital was 195 （65.6％）, and the mean number of extracted teeth per person was 0.9. 6）In patients who had continuously visited our dental clinic, there was a decrease in the number of grade B4 patients after the completion of treatment, and there was an increase in the number of grade C3 patients （p < 0.01）.
