Determinations of the bonding strength with pressure in the same direction for two enamel adhesion techniques:self-etching and all-etching
2010
Objective: To compare the shear strength of the self-etching techniques and the all-etching techniques for enamel adhesion and to provide evidence for the selection of different bonding methods in clinical practice. Methods: Ten middle incisors recently extracted were collected,each was cut into two parts following its sagittal axis,thus divide each tooth into two groups.For group 1 Single BondTM 2 was used to bond FiltekTM Z250 resin to the teeth.For group 2,SE Bond was used to bond Filtek Z250 resin to the teeth.After that,according to the principle of pressing from the incisal margin to the cervix,the shear strength of each bonding unit was tested and statistically analyzed. Results: The shear strength of Single BondTM 2 was significantly higher than that of SE Bond(P0.01). Conclusion: All-etching bon-ding system can provide higher shear strength for enamel bonding than that of self-etching bonding system.It is suggested that all-etching technique should be selected for dental restoration with resin.
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