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Revista odontológica mexicana
Print version ISSN 1870-199X
Abstract
BARAJAS DE LA VEGA, Lizbeth and BARCELO, Federico. Dentin shear bond comparative study using the push out method between systems with and without acid etching. Rev. Odont. Mex [online]. 2007, vol.11, n.4, pp.181-184. ISSN 1870-199X. https://doi.org/10.22201/fo.1870199xp.2007.11.4.15722.
Self-etching dentin adhesives offer a significant advance in step reduction in relation to phosphoric acid etchants, besides the well-known benefits such as clinical enamel and dentin adhesion. There are many comparative studies regarding dentin bond strength (with and without acid etching), most of them reporting low values for self-etching systems. These evaluations have been made using microtensile, shear bond and tension tests, but none of them had used the push out method.
Objective
To evaluate and compare the adhesion quality of composite resin direct restorations in dentin using two adhesion systems with self-etchant and with phosphoric acid etchant.
Method
45 human extracted molars were collected and randomly divided into 3 groups with 15 samples each. The teeth were sectioned and restored with composite resin. Adhesion was evaluated using the push out resistance technique. ANOVA statistical analysis was made using one-way and Tukey test.
Results
No statistical significant differences between AdheSE (26.8 MPa) and Single Bond (25.6 MPa), but there was with Prompt L-pop (10.6 MPa) were observed.
Conclusion
The adhesive system without etchant (AdheSE), obtained adhesion values similar to those obtained with the phosphoric acid-etching system.
Keywords : Adhesives; shear bond strength; acid etchant.
