Experimental Study of the Strength Characteristics of a Modified Polymer Base Material for Use in Orthopedic Dentistry

Abstract

Abstract Acquired defects of the maxillofacial region require orthopedic treatment. When choosing a structural material for the manufacture of a jaw prosthesis, it is necessary to provide for functional loads on the prosthesis during operation. Defects in the jaw bones require a structural material with high strength characteristics. The article deals with the method of increasing the strength of polyamide dental material with nanoscale titanium dioxide. Objective: to improve the strength characteristics of orthopedic structures made of polyamide. The study of the polyamide material was carried out on control and experimental samples, in which a modifying component was introduced by the method of dispersion reinforcement-nanoscale titanium dioxide in an amount of up to 1 wt.%. The three-point bending strength (σmax, MPa) and Young’s modulus (E, MPa) were experimentally studied. These criteria are indicative when assessing the strength of the basic structural materials from which removable dentures are made. These parameters take into account both vertical and horizontal functional loads, similar to the forces that arise when using removable dentures. The results of the study showed an increase in the maximum voltage by 8.4%, and the Jung module by 7.2% in samples with nanoscale titanium dioxide introduced into their composition to 1 wt. %. This study is of practical importance for orthopedic dentistry in cases where it is necessary to strengthen the structural base material in the manufacture of jaw prostheses for patients with acquired defects of the jaw bones, which reduces the risk of fracture of the base structures under the influence of functional loads.