Multidimensional Analysis of Dental Arch Patterns in Tooth Arrangement from Educational view of Full Denture Practice

Abstract

In this paper we deal with artifical tooth arrangement arch and classification method of the arch. Data are from 160 cases of complete denture fabrication for the student exercise in 1986. Fourteen points were set up at the denture models, five on upper and nine on lower, and variables were established as a line and degree among the points. We also establised a space area and inter-dental space diameter not to correlate strongly among the variables. The variables were inputted in NEC Computer Data Base and analyzed. Tooth arrangement model swere classified into eight patterns in the form. Since artificial tooth arch has a complicated structure, its analysis requires a special technique and extreme care must be taken to it. Roughly speaking, arch form was divided into three types as might be suspected. The first type of cluster was ovalum arch from, the second was triangle and the third was round in shape. Distal space of the lower canine presented any special abnormality. No apparent relation was observed between arch form and instructer.