CONDITION OF GUMS DURING LONG-TERM USE OF FIXED BRIDGES

Abstract

Dental prostheses cause changes in the acid-base balance of saliva. Solid-cast prostheses without a titanium nitride protective-decorative coating have the least effect on it (pH 7.2±0.03, starting from the 12th month after prosthetics and until the end of the study). Metal-ceramic prostheses have a slight effect (pH 7.39±0.02 starting from the 12th month after prosthetics and until the end of the study). Stamped-soldered bridge prostheses without a titanium nitride protective-decorative coating have a greater impact on the acid-base balance of saliva than other tested prostheses (by the 36th month after prosthetics, pH 6.85±0.05 mmol/L; control - 7.22±0.03). Solid-cast prostheses have a minimal effect on the periodontal tissues of supporting teeth (Russel index after 36 months of prosthetics was 0.66±0.03; control - 0.5±0.02). Metal-ceramic and solid-cast prostheses with a titanium nitride protective-decorative coating have a slight effect on periodontal tissues (Russel index after 36 months of prosthetics was 0.64±0.04 and 0.67±0.04, respectively). Non-soldered stamped crowns and stamped-soldered bridge prostheses without and with a titanium nitride protective-decorative coating have a greater impact on the periodontium of supporting teeth than other tested constructions (Russel index after 36 months of prosthetics was 1.19±0.03; 1.21±0.04; 1.19±0.05 and 1.23±0.07, respectively).