INFLUENCE OF THE MATERIAL CHOSE ON THE PATIENTS ADAPTATION TO REMOVABLE LAMINAR DENTURES WITH REPEATED PROSTHESIS

Abstract

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For decades the superiority in dentistry has been retained by the basic materials based on methacrylic acid due to such properties as mechanical strength, chemical resistance and aesthetic quality. However, there are significant disadvantages of acrylates. Generalization of a variety of reasons and reaction mechanisms of the mucous membrane of prosthetic bed on acrlates led to the introduction of a term of “intolerance to plastic prosthesis”, which has been preserved to this day. There are focal and diffuse stomatitis caused by toxic-allergic factor. Even with strict observance of technology of dentures made of acrylic plastic in the base of the prosthesis can be still up to 0.5% of an unpolymerized monomer, which causes allergic reactions local and general character. Allergic stomatitis is caused by materials dentures relates primarily to the delayed-type hypersensitivity and is of contact allergic inflammation type, which is understandable, since patients have used removable laminar dentures for a long time (3 years or more). Allergic diseases amount to 20-40% among the diseases of the oral mucosa. Recently, on the dental market out based materials nylon, polyurethane, polypropylene having a high impact strength, resilience, flexibility, biocompatibility with tissue prosthetic bed not containing toxic and allergenic ingredients. Purpose of the study was to evaluate the adaptation to the removable plate dentures made of thermoplastic materials in patients with a toxic allergic stomatitis. Materials and methods of the study: six patients with a total absence of teeth in the upper jaw 63-78 years old visited a clinic of orthopedic dentistry of Volgograd State Medical University to make a re-prosthetics. They had stomatitis symptoms like complaints of dryness, burning, redness and swelling of the mucous membrane under the denture base. After a careful investigation of clinical records and examination they were diagnosed with toxic allergic stomatitis. After the inflammation relief (mouthwash solutions herbs), and desensitizing treatment with Tavegil prosthetic treatment with removable laminar dentures in the absence of teeth with a "Dentalur" (2) and «Flexy-Nylon» (4) materials were conducted. Results: the long-term results of the use of the prosthesis showed no allergic responses for both materials. This contributed to a quickly adaptation for new dentures, restoration of lost functions and improvement of quality of life. Conclusions: thus, we approve those contemporary thermoplastic materials which are used for the manufacture of removable plate dentures bases are an alternative to acrylic resin and solve the problem of patients intolerance to conventional plastics.