Silane-coupling effect of a silane-containing self-adhesive composite cement

Kumiko Yoshihara; Noriyuki Nagaoka; Yukinori Maruo; Goro Nishigawa; Yasuhiro Yoshida; Bart Van Meerbeek

doi:10.1016/j.dental.2020.04.014

Silane-coupling effect of a silane-containing self-adhesive composite cement

Dent Mater. 2020 Jul;36(7):914-926. doi: 10.1016/j.dental.2020.04.014. Epub 2020 May 27.

Authors

Kumiko Yoshihara¹, Noriyuki Nagaoka², Yukinori Maruo³, Goro Nishigawa⁴, Yasuhiro Yoshida⁵, Bart Van Meerbeek⁶

Affiliations

¹ National Institute of Advanced Industrial Science and Technology (AIST), Health Research Institute, 2217-14 Hayashi-cho, Takamatsu, Kagawa 761-0395, Japan; Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Department of Pathology & Experimental Medicine, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan. Electronic address: k-yoshi@md.okayama-u.ac.jp.
² Okayama University Dental School, Advanced Research Center for Oral and Craniofacial Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan. Electronic address: nagaoka@okayama-u.ac.jp.
³ Okayama University Hospital, Department of Occlusion and Removable Prosthodontics, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan. Electronic address: ykmar@md.okayama-u.ac.jp.
⁴ Okayama University Hospital, Department of Occlusion and Removable Prosthodontics, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan. Electronic address: goro@md.okayama-u.ac.jp.
⁵ Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Kita 13, Nishi 7, Kita-ku, Sapporo, Hokkaido 060-8586, Japan. Electronic address: yasuhiro@den.hokudai.ac.jp.
⁶ KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT & UZ Leuven (University Hospitals Leuven), Dentistry, Kapucijnenvoer 7 blok a bus 7001, B-3000 Leuven, Belgium. Electronic address: bart.vanmeerbeek@kuleuven.be.

PMID: 32473833
DOI: 10.1016/j.dental.2020.04.014

Abstract

Objective: Hydrofluoric-acid etching followed by silanization is a routine clinical protocol for durable bonding to glass ceramics. Simplifying ceramic-bonding procedures, new technological developments involve the inclusion of a silane coupling agent in a self-adhesive composite cement. To investigate the effectiveness of the incorporated silane coupling agent, shear bond strength (SB) to ceramic and dentin, contact angle of water (CA), transmission electron microscopy (TEM), X-ray diffraction (XRD) and ²⁹Si nuclear magnetic resonance (NMR) assessments were correlatively conducted.

Materials and methods: SB to glass ceramic was measured without ('immediate') and with ('aged') 50K thermocycles upon application of (1) the silane-containing self-adhesive composite cement Panavia SA Cement Universal ('SAU'), being light-cured: 'SAU_light', (2) 'SAU_chem': chemically cured SAU, (3) 'SAP_light': light-cured Panavia SA Cement Plus ('SAP'), and (4) 'SAP_CP': SAP light-cured after separate silanization using Clearfil Ceramic Primer Plus ('CP'). CA was also measured on glass ceramic. The cement pastes before and upon mixing were characterized using ²⁹Si NMR. SB of SAU or SAP onto dentin was measured. Finally, the cement-dentin interface was characterized by TEM and XRD.

Results: The immediate and aged SB to glass ceramic of SAU did not significantly differ from those of SAP_CP, while they were significantly higher than those of SAP. CA of SAU did not significantly differ from that of SAP_CP, but it was significantly higher than CA of SAP. ²⁹Si NMR revealed siloxane bonds after mixture. SB of SAU and SAP to dentin did not show any significant difference. SEM, TEM and XRD confirmed tight and chemical interaction, respectively.

Significance: Incorporating silane in a 10-MDP-based self-adhesive composite cement combined efficient silane-coupling ability at the ceramic surface with effective bonding ability at dentin.

Keywords: NMR; Silane; bond strength; cement; ceramic; dentin; electron microscopy.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Ceramics
Dental Bonding*
Dental Porcelain
Materials Testing
Resin Cements*
Silanes
Surface Properties

Substances

Resin Cements
Silanes
Dental Porcelain