Experimental study on the sealing of dentin tubules by penetrating resin or fluid resin
10.3969/j.issn.1001-3733.2016.03.008
- VernacularTitle:渗透树脂与流体树脂封闭牙本质小管的实验研究
- Author:
Ju LI
;
Lu WANG
;
Peng LI
- Publication Type:Journal Article
- Keywords:
Penetrating resin;
Self-etch bond;
Total-etch bond;
Resin tag;
Seal
- From:
Journal of Practical Stomatology
2016;32(3):336-340
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the sealing effect of penetrating resin and fluid resin on the exposed dentin with self-etching and to-tal-etching methods,respectively.Methods:60 fresh extracted teeth were randomly divided into 4 groups(n =15).The enamel layer at the tooth neck was cut off,the dentin layer was exposed and adhered with penetrating resin Icon-Infiltration following Icon-Etch etching(group A),Icon-Infiltration following SE-Bond etching(group B),FiltekTMZ350X following SE-Bond etching(group C)and Prime &Bond NT combined with FiltekTMZ350XT following Gluma acid etching(group D),respectively.The morphological change of the dentin-resin interface was examined by the scanning electron microscope.The thickness of adhensive layer hybrid layer and the length of resin tag were measured.Data were statistically analysed.Results:Tight adhesion layer was observe in all groups.The hy-brid layer of the adhesive interface of group D was thicker than that of other groups(P <0.05);the resin tags in the dentin tubules of group A were longer than those of other groups(P <0.05);the bonding agent layer of group C was the thickest(P <0.05).Conclu-sion:The penetrating resin can form more effective protection layer on the exposed dentin surface and longer resin tags pernertrating in-to the dentin tubules than self-etch/total-etch bond system with fluid resin.
