Experimental study on the effects of cavity preparation with air-abrasion in preventive resin restoration
JIN Kai-lu
MA Zhe
LI Tao
ZHAO Jian-ying
REN Jian
ZHOU Lu-yang
Abstract：AIM:To compare the effects of cavity preparation between air-abrasion and traditional hand-piece method. METHODS:100 extracted premolars and molars were divided into Group A,B,C,D and E(n=20). The cavity preparation in group A,B and C was conduccted by trraditional handpiece,in group D and E by air-abra-sion. The teeth of group A were managed by acid etching and resin adhesive before composite resin filling,then smear fissure sealant was applied on the surface;the teeth of group B and D were managed by acid etching and resin adhesive before 3M Z350 filling;the teeth of group C and E were filled with Constic. The microlea-kage and the gap between tooth tissue and the filling material were measured by methylene blue staining and steoriomicroscope respectively. RE-SULTS:Microleakage level and gaps were A>C>E>B>D. Group D vs other groups,P<0.05;group B and E vs group C and A(P<0.05);group B vs E,P>0.05;group C vs A,P>0.05.The gap of group A was larger than that of group C(P<0.05). CONCLUSION:Air-abrasion combined with acid etching,resin adhesive and 3M Z350 are more effective than traditional handpiece method in the preventive resin restoration.
Keywords：preventive resin restorationair-abrasionflowing resinmicroleakageConstic
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 78-82 )