¹UNIVERSITY OF NIŠ, FACULTY OF MEDICINE, CLINIC OF DENTISTRY
²UNIVERSITY OF NIŠ, FACULTY OF MEDICINE, INSTITUTE OF BIOLOGY AND HUMAN GENETICS
³UNIVERSITY OF NIŠ, FACULTY OF SCIENCES AND MATHEMATICS, DEPARTMENT OF BIOLOGY AND ECOLOG

Introduction. The acrylic polymers are mainly used in dentistry for making and relining dentures. Uneven surface of the acrylic material represents a predilection site for accumulation of plaque, pigment and the residue of oral tissue.
The aim of this study was to investigate the adherence of various acrylic polymers after intramuscular implantation. Material and Methods. The study was based on the premise that the type and method of polymerization of acrylate affect the adhesion of the surrounding tissue in the structure of the resin. The structure of acrylic samples was analyzed after a four-week intramuscular implantation in relation to control by scanning electron microscope.
Results. Cold-polymerized acrylic resins after intramuscular implantation showed significant adherence to the surrounding tissue. In contrast, the structural design of heat-polymerized acrylic resins compared to control was not changed, which confirms their greater biocompatibility.
Conclusion. Due to the inhomogeneity of the external and internal structures of cold-polymerized acrylic resins, impeccable hygiene of padded dentures is imperative. Bearing in mind the better physical, mechanical and biological characteristics, permanent relining dentures by heat polymer resins is proposed.

 Key words: acrylic materials, adherence