Tantalum oxide as filler for dental adhesive resin.

Author(s) Garcia, I.Martini; Leitune, V.Castelo Br; Ferreira, C.Jung; Collares, F.Mezzomo
Journal Dent Mater J
Date Published 2018 Nov 30
Abstract

The purpose of this study was to formulate and evaluate an adhesive resin with tantalum oxide. TaO was evaluated by scanning electron microscopy and laser diffraction. The adhesive was formulated with methacrylate monomers and photoinitiators. TaO was added into the adhesive at 1, 2, 5 and 10 wt%. One group remained without filler (control group). TaO distribution, radiopacity (n=5), degree of conversion (DC) (n=3), softening in solvent (n=5) and ultimate tensile strength (UTS) (n=10) were evaluated. Data were analyzed by one-way ANOVA and Tukey's test (α=0.05). Spherical nanometric TaO was arranged in 3.35 µm particles. The groups over 5 wt% presented higher radiopacity (p<0.05). The DC ranged from 61.78 (±1.19)% to 67.35 (±1.40)%, with statistical difference from control group over 5 wt% addition (p<0.05). There was no difference in softening in solvent (p>0.05) and UTS (p>0.05). Tantalum oxide is a promising alternative for adhesive formulation and it could be further tested for biomimetic remineralization.

DOI 10.4012/dmj.2017-308
ISSN 1881-1361
Citation Garcia IM, Leitune VC, Ferreira CJ, Collares FM. Tantalum oxide as filler for dental adhesive resin. Dent Mater J. 2018;37(6):897-903.

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