Curative effects of ultrasonic caries removal and injectable filling for adjacent surface caries

HA Si Mu Ren; ZHAO Lian-ying; CHEN Li-chun; YIN Xing; WANG Chao; WANG Hong; BAI Xiao-xia; DENG Yao-qiang

doi:10.15956/j.cnki.chin.j.conserv.dent.2017.06.009

Abstract：AIM: To observe the effects of different clinical operation techniques on the dental caries of the adjacent surface.METHODS: 62 teeth with adjacent caries were randomly divided into 3 groups.In group A(n=21) caries was removed by burs and the defects were filled with manual technique.In group B(n=20), caries was removed by burs combined with ultrasonic equipment, the defects were filled with manual technique.In group C(n=21), caries was removed by burs combined with ultrasonic equipment, and the defects were filled with injection and manual techniques.Operation time, operative complication rate, edge tightness of immediately after filling, Ryge''s clinical evaluation index of edge coloring, gingival inflammation and pulp reaction were evaluated 3, 6 and 12 months after filling.One-way ANOVA (alpha=0.05) and Chi-square test were used for the statistic analysis.RESULTS: The operation time of the combination caries removal group and the single method of bur removal was (5.2±1.9)min and (3.7±1.2)min (P<0.05).The adjacent teeth injury was happened in 0 and 2 cases of the 2 groups respectively.The operation time of the filling with injection technique combined manual technique and the filling with manual technique was (3.1±0.8)min and (4.6±1.8)min (P<0.05), respectively.The edge tightness immediately after filling in combined technique group was better than that of single manual technique(P<0.05).After treatment the pulp reaction in the early 3 months was observed in 1 case of group A and C respectively.Edge coloring increased with time in the 3 groups.No change of gingivitis indexes was found in the 3 groups.CONCLUSION: In the treatment of adjacent surface caries, ultrasonic caries removal method can be used as a supplementary method to the routine bur removal.Filling with injection technique combined manual technique is better than filling with single manual technique.