AI Article Synopsis
- The study compared the shear bond strength (SBS) of resin crowns made through additive (VarseoSmile) and subtractive (Cerasmart270) methods, focusing on different surface pretreatments.
- Seven subgroups were tested for their effects on SBS, including various combinations of sandblasting, hydrofluoric acid, and Multi Primer, with a control group for reference.
- Results showed that the additive method (VarseoSmile) had significantly higher SBS values compared to the subtractive method (Cerasmart270), with different pretreatments improving bonding performance and varying failure modes observed between the two methods.
Article Abstract
The aim was to compare different surface pretreatments on definitive resin crown materials manufactured additively or subtractively in terms of shear bond strength (SBS) values. Seven subgroups (n=10) were formed from additively manufactured VarseoSmile Crown Plus (VS) and subtractively manufactured Cerasmart270 blocks (CS) according to different surface pretreatments applied; sandblasting (subgroup SB), hydrofluoric acid (subgroup HF), Multi Primer (subgroup MP), subgroup SB-HF, subgroup SB-MP, subgroup SB-HF-MP, and control subgroup. A 3-mm-diameter composite was cemented onto each sample by self-adhesive resin cement. SBS values were measured and failure modes were analyzed after thermocycling. Data were analyzed with two-way ANOVA and Tukey HSD tests. The mean SBS value of VS was found significantly higher than CS (p<0.001). Subgroups SB-HF-MP, HF, SB-MP, and MP of VS exhibited the highest SBS values (p<0.001). The VS exhibited mostly cohesive failure, while CS exhibited mostly adhesive failure.
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| http://dx.doi.org/10.4012/dmj.2024-111 | DOI Listing |
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