高度の歯石沈着症患者における補綴処置について

Abstract

This paper describes the prosthodontic treatment of a 24-year-old female patient who forms substantial amount of calculus quite quickly within two weeks. The bacterial composition and the saliva pH of the patient were analyzed.Veillonellawas found tobe predominant and may contribute to keep the saliva pH rather neutral, resulting in stimulationof calculus formation.A metal material for the treatment should allow lesser amount of bacterial adhesion in order to reduce calculus formation, and the alloy for porcelain-fused-to-metal was selected among 5 dental alloys by a bacterial adhesion test to make a removable type bridge ((4)(3) 2 1 (1)(2)(3)). The bacterial deposits or early calculus formed on the bridge have been removed by daily brushing or acid treatment with 1% HCl solution once a week.