Repair Bond Strength of a Resin Composite to Plasma-Treated or UV-Irradiated CAD/CAM Ceramic Surface

The aim of this study was to investigate whether atmospheric-pressure plasma (APP) or ultraviolet (UV) irradiation could alter the hydrophilicity of a computer-aided design/computer-aided manufacturing (CAD/CAM) glass ceramic surface, and thereby enhance the repair bond strength between the ceramic...

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Bibliographic Details
Published inCoatings (Basel) Vol. 8; no. 7; p. 230
Main Authors Kameyama, Atsushi, Haruyama, Akiko, Tanaka, Akihiro, Noro, Akio, Takahashi, Toshiyuki, Yoshinari, Masao, Furusawa, Masahiro, Yamashita, Shuichiro
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 28.06.2018
Subjects
Acids
Bond strength
Bonding strength
CAD
CAD/CAM
CAM
Ceramic bonding
Composite materials
Compressed air
Computer aided design
Computer aided manufacturing
Contact angle
Dentin
Dentistry
Enamel
Glass ceramics
Irradiation
Light
Phosphoric acid
Porcelain
Potassium aluminum silicates
Repair
Resins
Software
Ultraviolet radiation
Variance analysis
United States > US
Japan
Liechtenstein
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Summary:The aim of this study was to investigate whether atmospheric-pressure plasma (APP) or ultraviolet (UV) irradiation could alter the hydrophilicity of a computer-aided design/computer-aided manufacturing (CAD/CAM) glass ceramic surface, and thereby enhance the repair bond strength between the ceramic and a resin composite. Forty-eight leucite-reinforced glass ceramic discs were treated with 40% phosphoric acid and randomly assigned into one of six groups: Group 1, control; Group 2, treated with a mixture of Clearfil SE Bond primer (SEP) and Clearfil Porcelain Bond Activator (PBA); Group 3, subjected to APP irradiation for 10 s; Group 4, subjected to UV irradiation for 60 min; Group 5, APP irradiation followed by SEP/PBA; and Group 6, UV irradiation followed by SEP/PBA. After treatment, discs were bonded with resin composite using Clearfil SE Bond and stored in water at 37 °C for 1 week. We then tested how these treatments affected the microtensile bond strength (µTBS) and measured changes in the water contact angle (CA). Samples from Group 2 showed the highest µTBS (44.3 ± 6.0 MPa) and CA (33.8 ± 2.3°), with no significant differences measured between Groups 1, 3, and 4 (p < 0.05). Furthermore, the additional treatments of APP or UV before SEP/PBA had no effect (Group 5, p = 0.229) or a reduced effect (Group 6, p = 0.006), respectively, on µTBS. Overall, APP or UV irradiation before SEP/PBA treatment did not enhance the repair bond strength.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings8070230