ABSTRACT
Objective: To analyze the stress–strain states of bone and abutment teeth during the use of
different prosthetic designs of fixed partial dentures with the use of relevant mathematical
modeling principles. Materials and Methods: The use of Comsol Multiphysics 3.5 (Comsol AB, Sweden) software during the mathematical
modeling of stress–strain states provided numerical data for analytical interpretation
in three different clinical scenarios with fixed dentures and different abutment teeth
and demountable prosthetic denture with the saddle-shaped intermediate part. Statistical Analysis Used: Microsoft Excel Software (Microsoft Office 2017) helped to evaluate absolute mistakes
of stress and strain parameters of each abutment tooth during three modeled scenarios
and normal condition and to summarize data into the forms of tables. Results: In comparison with the fixed prosthetic denture supported by the canine, first premolar,
and third molar, stresses at the same abutment teeth with the use of demountable denture
with the saddle-shaped intermediate part decreased: at the mesial abutment tooth by
2.8 times, at distal crown by 6.1 times, and at the intermediate part by 11.1 times,
respectively, the deformation level decreased by 3.1, 1.9, and 1.4 times at each area.
Conclusions: The methods of mathematical modeling proved that complications during the use of
fixed partial dentures based on the overload effect of the abutment teeth and caused
by the deformation process inside the intermediate section of prosthetic construction.
Key words:
Dental rehabilitation - mathematical modeling - prosthetic bridges design
