CLINICAL EFFICACY MATERIALS FOR TEMPORARY PROSTHESIS

Abstract

Research problems. At the moment it is impossible to quality dentures without the use of temporary structures. In addition to high aesthetics and mechanical strength of such structures must prevent displacement of the abutment teeth that have lost contact with the antagonist and neighboring teeth to protect them from functional overload, preserve the natural contour of the gingival margin, isolate prepared teeth from harsh environmental factors. In operation, the oral prosthetic design are subject to considerable mechanical stress, can change color, but can also have a negative effect on the mucous membrane, causing tissue congestion, change in the contour of the gingival margin. Thus, the aim of this study was the clinical evaluation as a temporary prosthesis self-curing bis-acrylic composite with automatic mixing sys-tems. Materials and research techniques. For making temporary crowns and bridges used self-curing bis-acrylate com-posites with automatic mixing: Luxatemp Automix Plus (DMG, Hamburg), Systemp c & b (Ivoclar-Vivadent, Schaan, Liechtenstein), Protemp 3 Garant (3M Espe, Seefeld). Temporary fixation was performed with a special material Temp Bond (Kerr). Temporary prosthetic appliances made direct method, directly in the mouth. To assess the quality of tem-porary prosthesis into account damage and chipped in structures, inflammatory reactions and changes in the contour of the gums, teeth reaction to cold and percussion. Using modified criteria of the American Dental Association (USPHS-criteria) was determined discoloration and marginal fit of the prosthesis. Vitality was determined using cold sample mounted the teeth immediately after treatment. The study was conducted immediately after setting a temporary bridge or crown (basal level), after 1 week, 2 weeks and 1 month operation in the mouth. Results of research. Color stability of provisional bridges and crowns presented with self-curing plastic level characterized as "excellent" and "good" throughout the observation period. A more pronounced tendency to discolora-tion manifested in structures made of Systemp. Marginal fit of temporary crowns and bridges with Luxatemp and Protemp been at a high level in a month observations only in one patient (3 %) was observed gapping throughout the edges of the crown and mobility design. Single crowns of the investigated materials can withstand all the operation without failure. Damage temporary dentures with Luxatemp observed only in two patients after 2 weeks of being in the mouth. During the entire period of observation breakage of prostheses made from Protemp, occurred in 8 patients with Systemp - in 11 patients. Fracture lines are usually in the crowns of abutment teeth. From the least amount of surround-ing tissue inflammatory reactions observed in prosthetic Protemp. A month in 5 patients (14 %) observed slight swell-ing of the gums. Conclusions. Thus, the investigated self-curing plastics are high-quality materials have good biocompatibility, vir-tually no complications on the part contacting soft tissues and hard tissues. Luxatemp Automix Plus showed the greatest advantages over other materials for the manufacture of single and extended structures. To avoid breakdowns and in-flammatory reactions preferably limit the functioning of temporary structures to one month.