Maeda Fernando A, Guedes Ana P A, Catelan Anderson, Pavan Sabrina, Briso André L F, Sundfeld Renato H, dos Santos Paulo H
Department of Dental Materials and Prosthodontics, São Paulo State University, Araçatuba School of Dentistry, UNESP, Brazil.
Acta Odontol Latinoam. 2009;22(1):41-5.
The aim of this study was to evaluate the effect of desensitizing agents on the micro-shear bond strength of adhesive systems to dentin. Forty bovine teeth were divided into 8 groups (n=5): G1--Single Bond (SB); G2--GH.F + SB; G3-- Desensibilize + SB; G4--essensiv + SB; G5 --ingle Bond 2 (SB2); G6--H.E + SB2; G7--esensibilize + SB2; G8--Dessensiv + SB2. In all of the groups, the desensitizing agents were applied after phosphoric acid etching and before the dentin adhesive application. Z250 composite resin tubes were bonded on the treated surface. After 24 hours, the teeth were tested in a universal machine. Data were submitted to ANOVA and Tukey's test (5%). The results showed that the groups where Desensibilize and Dessensiv were applied exhibited smaller bond strength values.
本研究的目的是评估脱敏剂对粘结系统与牙本质微剪切粘结强度的影响。将40颗牛牙分为8组（n = 5）：G1 - 单组分粘结剂（SB）；G2 - GH.F + SB；G3 - 脱敏剂 + SB；G4 - essensiv + SB；G5 - 单组分粘结剂2（SB2）；G6 - H.E + SB2；G7 - esensibilize + SB2；G8 - Dessensiv + SB2。在所有组中，在磷酸酸蚀后和牙本质粘结剂应用前应用脱敏剂。将Z250复合树脂管粘结在处理过的表面上。24小时后，在万能试验机上对牙齿进行测试。数据采用方差分析和Tukey检验（5%）。结果表明，应用Desensibilize和Dessensiv的组表现出较小的粘结强度值。
