Algorithm for artificial teeth size estimation according to face morphological features in patients with complete adentia

Abstract

The aim of the study was to improve the prosthetic treatment of patients with complete absence of teeth, taking into account the development of an algorithm for determining the size of artificial teeth by the morphometric parameters of the face. The study involved 76 elderly and senile adults with a full adentia of permanent teeth, who turned to the clinic for a prosthetic treatment. The results of examination and orthopedic treatment of this category of patients made it possible to develop an algorithm for determining the size of artificial teeth during prosthetics of dentition defects, taking into account the original correction factors obtained by calculation and analytical methods using mathematical-graphic modeling. The algorithm is based on the optimal ratio of diagonal facial parameters on both sides and the sum of the mesial-distal dimensions of 14 artificial teeth on the upper jaw, taking into account the correction factor of 2.2. The sum of the width of the artificial teeth of the frontal part on the upper jaw correlates with the total width of the crowns of 14 artificial teeth, taking into account the correction coefficient of 2.45. The value of the intermaxillary correction factor at a ratio of the width of 14 artificial teeth on the upper jaw to the similar dimensional characteristics of artificial teeth on the lower jaw is 1.07. Thus, to determine the size of artificial teeth in the design of denture prostheses, it is mathematically tested and clinically justified the advisability of using diagonal facial parameters and corresponding original correction factors.