The Marginal Seal Of Non-carious Cervical Lesions Filled With Three Kinds Of Material

ObjectiveThe aim of this study was to compare the marginal seal and microleakagesbetween Glass Ionomer Cement Fuji-II LC, Polofil Supra composite resin and3Mz350nano composite resin after filling in non-carious cervical lesions andprovide a reference for the selection of appropriate repair materials.Methods60caries-free non-cracked premolars were collected and divided into threegroups randomly. The teeth were cleaned by ultrasonic and prepared V-shapeat1/3part of cervical, then filled with Glass Ionomer Cement Fuji-II LC(group1), Polofil Supra composite resin(group2)and3Mz350nano compositeresin(group3).30teeth were embedded and cutting directly, while others wereimmersed in2%methylene blue solution after thermal cycling200times. Thedepth of dye penetrating into the teeth and space between the restorationsand teeth were measured by a metallurgical microscope. The statisticdifference was analyzed by SPSS statistical software.Result1、The tiny widths between filling materials and teeth were observed in all30samples in the seal study. The average width of z350was theleast(15.01±2.13） μm, Polofil came the second(15.78±2.45） μm, GlassIonomer Cement Fuji-II LC was the most(22.95±2.41）μm(P＜0.01amonggroups).There was no significant difference between z350and Polofil（P＞0.05）. 2、The dye penetrations were observed in all other30samples, and theascending order of their depth was:3Mz350nano composite resin＜PolofilSupra composite resin＜Glass Ionomer Cement Fuji-II LC. There wassignificant difference in the depth of dye penetration between three materials（P＜0.05）.Conclusion1、 Using Polofil and z350composite resin made more advantagescompared with Glass Ionomer Cement Fuji II in the marginal seal aspect.2、3Mz350nano composite resin has the minimum depth of dyepenetration in microleakage aspect.3Mz350nano composite resin wasconsidered firstly as filling material when we encountered the non-cariouscervical lesions.