A comparison of the bonding strength between self-etching and total-etching systems to irradiated enamel
FENG Qing
XIANG Rong
LI Jia-yi
CHEN Wen-xia
Abstract：AIM: To evaluate the bonding effects of total-etch adhesive system ( Prime&Bond NT, PB) and all in one self-etching adhesive system(G-Bond, GB) to irradiated enamel.METHODS:20 freshly extracted caries-free third molars were randomly divided into 4 groups ( n=5). The experimental groups were irradiated with 60Co of 60Gy, and were then bonded with PB(P1 group) and GB(G1 group) respectively.Samples in control groups received no irradiation and were bonded with PB (PR group) and GB (GR group) respectively.The microtensile bond strength(MBS) was measured on a Micro Tester , the bond interface was observed by SEM. RESULTS: The MBS of P1 group was weaker than PRgroup (P=0. 00), and that of G1 was not statistically different from that of GR(P>0.05).The MBS was not statistically different between PR and GR( P>0.05).No significant structural differ-ence was observed among the 4 groups under SEM. CONCLUSION:Irradiation decreases the MBS of PB and GB ad-hesives to enamel. Total-and self-etching bonding systems have similar effect for bongind irradiated enamel.
Keywords：radiotherapyenamelbondingmicrotensile bond strength(MBS)
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 534-537 )