e-ISSN 2231-8542
ISSN 1511-3701

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Composite Resin Veneer Systems: An In Vitro Study to Evaluate Surface Roughness Changes with Different Surface Treatments and Shear Bond Strength

Nik Zarina Nik Mahmood, Amar Mohammed Thiyab and Mohamed Ibrahim Abu Hassan

Pertanika Journal of Tropical Agricultural Science, Volume 27, Issue 4, October 2019

Keywords: Composite veneer systems, surface roughness changes, surface treatments, shear bond strength

Published on: 21 October 2019

This study aimed to evaluate surface roughness (SR) changes with surface treatments and shear bond strength (SBS) of two prefabricated and one laboratory-made composite veneer systems. The prefabricated groups, Edelweiss (EDL) and Componeer (CMP) while, SR Nexco (NEX) was a laboratory-made group. A total of hundred twenty samples, comprising 40 samples for each group were divided into four subgroups of surface treatment (n=10): (a) no treatment (control), (b) 9% hydrofluoric acid (HF), (c) abrasion with a high-speed diamond bur and (d) sandblast with aluminum trioxide (Al2O3) particles. A profilometer was used to evaluate the SR before and after surface treatments applications. Stereo electron microscope was utilized to assess changes occurred on the surface texture of the veneers. For SBS test, the prepared veneer was uploaded over an epoxy resin mould. Two cylindrical adhesive resins were bonded binary and perpendicular over the inner surface of the veneer and tested using Universal Testing Machine (SHIMADZUTM, Japan). Data was analyzed using One-way ANOVA, post-hoc student’s t-test and Duncan test with p<0.05. One-way ANOVA revealed a significant increase in the SR of all veneer groups treated with a diamond bur and Al2O3 sandblast. NEX group showed higher SR (6.52 ± 0.85) followed by EDL (4.59 ± 0.75) and CMP (4.99 ± 0.67) groups. The significant higher SBS was demonstrated by NEX (22.88 ± 5.2 MPa). EDL exhibited higher bond strength (12.3 ± 3.7 MPa) than CMP (11.75 ± 6.5 MPa). A laboratory-made system produced higher SR enhancement with a diamond bur and superior bond strength.

ISSN 1511-3701

e-ISSN 2231-8542

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