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Pitchika, Vinay; Birlbauer, Sebastian; Chiang, Meng-Ling; Schuldt, Christoph; Crispin, Alexander; Hickel, Reinhard; Kühnisch, Jan (30. March 2018): Shear bond strength and microleakage of a new self-etch adhesive pit and fissure sealant. In: Dental Materials Journal, Vol. 37, No. 2: pp. 266-71
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Abstract

This study aimed to evaluate the shear bond strength (SBS) and microleakage of a new self-etch adhesive-based fissure sealant (EG) on aprismatic enamel in comparison to conventional fissure sealing with 30 s acid etching (CG). The fissures were sealed according to the manufacturer's instructions. Each group was divided into 3 subgroups: 1-day water storage, 3-month water storage, and 5,000× thermocycling. After measuring SBS using the Ultradent method, failure mode was analyzed. In additional 16 teeth, microleakage was tested using dye penetration method. Pairwise comparisons were analyzed using Mann-Whitney U-Test. Multiple linear regression was performed to assess the factors influencing on SBS. EG had significantly lower mean SBS (4.1 MPa±2.1) than the CG (17.6 MPa±6.4). CG (1.1%) performed significantly better than the EG (12.8%) in microleakage analysis. The tested EG yielded significantly inferior results and its clinical use should be decided after weighing its pros and cons.