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Graphene oxide‐based experimental silane primers enhance shear bond strength between resin composite and zirconia
Author(s) -
Khan Aftab A.,
AlKhureif Abdulaziz A.,
Saadaldin Selma A.,
Mohamed Badreldin A.,
Musaibah Abobaker S. O.,
Divakar Darshan D.,
Eldwakhly Elzahraa
Publication year - 2019
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/eos.12665
Subject(s) - silane , materials science , composite number , distilled water , composite material , oxide , cubic zirconia , surface roughness , graphene , ceramic , chemistry , nanotechnology , metallurgy , chromatography
Despite various mechanical and chemical surface‐pretreatment methods, long‐term bonding of resin composite to dental zirconia (ZrO 2 ) remains a major concern. In this study, graphene oxide (GO) sheets were infused into two commercially available primers and the enclosed mould shear bond strength (EM‐SBS) of resin composite to ZrO 2 was evaluated. Twelve fully sintered ZrO 2 blanks were pretreated and randomly allocated to four groups according to the primers used: RelyX (RX); GO blended RelyX (RXGO); Monobond‐S (MB); and GO blended Monobond‐S (MBGO). The resin composite stubs were bonded onto the pretreated ZrO 2 surfaces and analysed at baseline and after storage in distilled water for 2 and 4 months. The experimental primers blended with GO sheets influenced the surface morphology, visualized as increased surface roughness, and slightly increased the water contact angle measurements. Moreover, the infusion of primers with GO increased the mass fraction (wt%) of carbon and oxygen. The highest EM‐SBS values were found for RXGO, with mean (SD) EM‐SBS values of 26.4 (3.7) MPa and 21.5 (5.1) MPa after 2 and 4 months of storage, respectively. Infusion of silane primers with nanometre‐ to micrometre‐size GO sheets enhanced the SBS between resin composite and ZrO 2 .