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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Interfacial Ultramorphology Evaluation of Resin Luting Cements to Dentin: A Correlative Scanning Electron Microscopy and Transmission Electron Microscopy Analysis

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Author(s):
Aguiar, Thaiane Rodrigues [1] ; Vermelho, Paulo Moreira [1] ; Andre, Carolina Bosso [1] ; Giannini, Marcelo [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Restorat Dent, BR-13414900 Piracicaba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MICROSCOPY RESEARCH AND TECHNIQUE; v. 76, n. 12, p. 1234-1239, DEC 2013.
Web of Science Citations: 6
Abstract

The objective of this study was to analyze the dentin-resin cements interfacial ultramorphologies using two different methods: scanning (SEM) and transmission electron microscopy (TEM). Four commercial products were evaluated: two conventional cementing system (RelyX ARC/Adper Scotchbond Multi-Purpose Plus, 3M ESPE and Clearfil Esthetic Cement/DC Bond, Kuraray) and two self-adhesive resin cements (RelyX Unicem, 3M ESPE and Clearfil SA Cement, Kuraray). Prepolymerized resin disks (Sinfony, 3M ESPE) were cemented on oclusal dentin surfaces of 24 third human molars, simulating the indirect restorations. After 24 h, teeth were sectioned into 0.9-mm thick slabs and processed for microscopy analyses (SEM or TEM/ n = 3). Qualitative characterization of dentin-resin cement interface was performed. Hybrid layer formation with long and dense resin tags was observed only for RelyX ARC cementing system. Clearfil Esthetic Cement/DC Bond system revealed few and short resin tags formation, whereas no hybridization and resin tags were detected for self-adhesive resin cements. Some interfacial regions exhibited that the self-adhesive resin cements were not bonded to dentin, presenting bubbles or voids at the interfaces. In conclusion, TEM and SEM bonding interface analyses showed ultramorphological variations among resin cements, which are directly related to dental bonding strategies used for each resin cement tested. Microsc. Res. Tech. 76:1234-1239, 2013. (c) 2013 Wiley Periodicals, Inc. (AU)