| Abstract [eng] |
The aim of this master thesis is to develop a method for assessing the dental arch form by using 3D dental computer models. A description of the methodology assessing the shape of dental arch has been created. Using special programs, the coordinates of a separate tooth cusps were found, which were calculated in dimensional space. Later, they were transferred into two-dimensional space, i.e. projected on the occlusal plane, which position in space was described using the coordinates of dental cusps, calculating beta function and polynomial regression models. The received equation was described calculating the experimental data; therefore, Fisher's criterion and RESET test were applied. A study was conducted using dental plaster models of seven patients and Dental3D software. Subsequently, the d3dtotxt.txt program was used, which data file was further calculated using MATLAB software. In order to determine an occlusal plane and projections of the points on the plane, a program has been written, using MATLAB software. It was found that polynomial function was more suitable for the lower jaw and beta function was more suitable for the upper jaw. The study is carried out with plaster models of seven patients‘ using software Dental3D. Program code was developed using MATLAB package to establish occlusive plane, and point projections to the plane were conducted. It has been found, that the polynomial function is the most accurate to use for both mandibular and maxilar dental arch. |
