Alternative surface treatments strategies for bonding to CAD/CAM resin-matrix ceramics

Alternative surface treatments strategies for bonding to CAD/CAM resin-matrix ceramics

This study evaluated the shear bond strength (µSBS) and failure mode of CAD/CAM polymer-infiltrated ceramic network (PICN - Vita Enamic) and nanoceramic resin (NCR - Lava Ultimate) submitted to alternative surface treatments. 40 plates of each material were submitted to (n = 10) conventional (manufa...

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Bibliographic Details
Published in:Journal of adhesion science and technology Vol. 37; no. 8; pp. 1471 - 1484
Main Authors: Wanderico, Carolina Marino, Picolo, Mayara Zaghi Dal, Kury, Matheus, Azevedo, Veber Luis Bonfim, Giannini, Marcelo, Cavalli, Vanessa
Format: Journal Article
Language:English
Published: Utrecht Taylor & Francis 18-04-2023
Taylor & Francis Ltd
Subjects:
Adhesives
Aluminum oxide
Bond strength
Bonding strength
CAD-CAM
CAM
Computer aided manufacturing
Etching
Evaluation
Failure modes
Hydrofluoric acid
polymers
Resins
Sandblasting
Surface treatment
Water storage
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Summary:This study evaluated the shear bond strength (µSBS) and failure mode of CAD/CAM polymer-infiltrated ceramic network (PICN - Vita Enamic) and nanoceramic resin (NCR - Lava Ultimate) submitted to alternative surface treatments. 40 plates of each material were submitted to (n = 10) conventional (manufacturer's indications): Sandblasting with Al 2 O 3 (SAND) and 5% hydrofluoric acid etching (5% HF), or alternative treatments: 10% HF (10% HF) and Sandblasting + silanization (SAND/SIL). A self-etching adhesive system (Scotchbond Universal Adhesive, 3M Oral Care) was applied, and resin cement cylinders were built on the specimen's treated surface and tested in µSBS after 24 h, or after water storage for 1 year. Data were evaluated by three-way repeated-measures ANOVA and Tukey test (α = 0.05). Failure mode was evaluated under scanning electron microscopy (SEM). At 24 h, HF etching (5% or 10%) promoted higher µSBS for PICN, while SAND and 5% HF promoted higher µSBS for NCR than SAND/SIL (p > 0.05). After storage for 1 year, all treatments decreased PICN's bond strength, but 10% HF exhibited higher µSBS than 5% HF (p < 0.05). Also, 5% HF and SAND/SIL maintained µSBS of NCR, and in general, NCR exhibited higher µSBS than PICN. Failure mode was predominantly mixed after 24 h and mostly adhesive after 1-year storage. In conclusion, the surface treatments influenced the bond strength of PICN and NCR and 1-year storage decreased the bond strength for most groups. 10% HF is the treatment option for PICN while 5% HF-etching is an alternative to sandblasting for NCR.
ISSN:0169-4243
1568-5616
DOI:10.1080/01694243.2022.2079333