The effect of three anti-caries drugs in the prevention of dental caries of abutment teeth in removable partial denture

Abstract

Objective To evaluate the effect of three anti-caries drugs, Duraphat sodium fluoride tooth protector, GC tooth Mouse and Flariesse varnish in the prevention of dental caries of abutment teeth in removable partial denture. Methods We selected 60 patients who suffered from dentition defect. According to tooth position recording of the World Dental Federation, the abutment teeth were divided into four parts by the quadrant, and the abutment teeth of different quadrant, with simple random sampling method, were randomly assigned to Duraphat group, GC tooth Mouse group, Flariesse varnish group and control group. In experimental groups, the drugs were applied every six months. The control group needs no any processing. The prevalence of caries of abutment teeth of removable partial denture was recorded 2 years later. The chi-square test was used to compare the caries prevalence of the four groups of abutments, and the test level was α = 0.05. Results Caries prevalence of Duraphat group was 14.75%, and that in the GC tooth Mouse group was 14.71%, the Flairesse varnish group was 1.67%, the control group was 35.21%. There was no statistical difference between the Duraphat varnish group and the GC tooth Mouse group (χ2= 0.000, P= 0.994) . There were significant statistical difference of the caries prevalence between the Duraphat varnish group and Flariesse varnish group (χ2= 6.971, P= 0.08) , the control group (χ2= 7.180, P= 0.08) , and that between GC tooth Mouse group and Flariesse varnish group (χ2= 7.038, P= 0.008) , the control group (χ2= 7.752, P= 0.005) ; together with the significant statistical difference between Flariesse varnish group and the control group (χ2= 23.380, P<0.001) . Conclusion It is an effective way to prevent caries in the abutment teeth of removable partial denture with drug, and Flariesse varnish get the best effect. Key words: Denture, partial, removable; Dental caries, preventive; Duraphat; GC tooth Mouse; Flariesse varnish