Influence of surface treatment on repair bond strength of CAD/CAM long-term provisional restorative materials: an in vitro study.
BMC Oral Health
; 23(1): 342, 2023 05 30.
Article
em En
| MEDLINE
| ID: mdl-37254207
ABSTRACT
BACKGROUND:
The surface treatment to improve the repair bond strength may vary because CAD/CAM provisional restoration polymers exhibit a variety of microstructures. This study was conducted to evaluate the effect of surface treatments on the repairability of three different CAD/CAM polymers for long-term provisional restorations.METHODS:
Thirty specimens from each provisional restorative materials (CAD-Temp, Everest C-Temp, and PEEK) were divided into three groups C surfaces received no treatment; SB surfaces were airborne particle abraded with 50 µm aluminum oxide; SB-T surfaces received the same conditions as group SB in addition to thermocycling before and after treatment. Primer and nanohybrid repair resin composite were applied to the prepared CAD /CAM surfaces. The shear bond strength and the mode of failure were assessed. ANOVA and Tukey's significant difference tests were used to evaluate the data.RESULTS:
The SB group had significantly higher repair SBS values (p < .001) compared to the other groups (C and SB-T). Everest C-Temp significantly recorded the highest repair SBS (17.84 ± 0.19 MPa) in group SB, while the lowest repair SBS values (5.51 ± 1.14 MPa) for CAD-Temp were recorded in group C. PEEK significantly recorded the second highest repair SBS (15.96 ± 0.18) in the SB group.CONCLUSIONS:
Everest C-Temp had the highest repair SBS after an airborne abrasion particle. Thermocycling had no significant effect on the repair SBS for PEEK. Everest C-Temp and PEEK are recommended as long-term durable provisional materials for clinical use.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Colagem Dentária
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article