Shear bond strength and microleakage results for three experimental self-etching primer compositions for pit and fissure sealingReportar como inadecuado




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Clinical Oral Investigations

, Volume 21, Issue 5, pp 1465–1473

First Online: 19 July 2016Received: 27 September 2015Accepted: 07 July 2016DOI: 10.1007-s00784-016-1907-z

Cite this article as: Birlbauer, S., Chiang, ML., Schuldt, C. et al. Clin Oral Invest 2017 21: 1465. doi:10.1007-s00784-016-1907-z

Abstract

ObjectivesThis in vitro study evaluated the shear bond strength SBS and microleakage of three experimental self-etching primers for pit and fissure sealing.

Materials and methodsThe material used three formulations of an experimental fissure primer EFP applied without phosphoric acid etching EFP-1-EFP-2-EFP-3 and one control group with sealant application after 30 s of acid etching. Four groups of sealants n = 40 specimens-group were tested for SBS, and a failure analysis was conducted after 1-day water storage, 3-month water storage, and 5000-fold thermocycling. In addition, microleakage was tested.

ResultsThe SBSs of the EFPs range 8.2 MPa standard deviation 4.2 to 15.4 MPa 5.4 were generally significantly lower than those of conventional fissure sealing range 15.6 MPa 4.4 to 19.1 MPa 6.2. The SBS of EFP-3 was better than that of the EFP-1 or EFP-2 formulations. Microleakage was significantly lower in the control group 1.1 % than in the EFP-1 3.8 % and lower than in EFP-3 7.7 % group. In the multiple linear regression analysis, material and aging significantly influenced SBS.

ConclusionsThe SBS of EFP-3 was 15 to 32 % lower than it was for the corresponding controls.

Clinical relevanceThe SBS is lower, but the main potential benefit of this new approach is a reduced application time in clinical practice.

KeywordsPit and fissure sealant Shear bond strength Microleakage 



Autor: Sebastian Birlbauer - Meng-Ling Chiang - Christoph Schuldt - Vinay Pitchika - Reinhard Hickel - Nicoleta Ilie - Jan Kühnis

Fuente: https://link.springer.com/



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