Year-end Sale % OFF 
Abstract
This study assessed the bond strength of a resin cement when Immediate Sealed Dentin (ISD) was contaminated by different temporary cements applying a microshear test. Forty-eight fragments of third molar crowns were mounted in acrylic resin and worn until the dentin was exposed. The substrates were sealed with a 3-step conventional adhesive system and divided into four groups (n=12): Control (without temporary cement) and three groups that used different temporary cements - Provy, RelyX Temp NE, and Provitemp. The temporary cements were removed after 7 days of storage. Resin cement RelyX ARC was applied to the contaminated substrates. Microshear bond strength was evaluated using a universal testing machine (0.5 mm/min). Data was analyzed with ANOVA and a Dunnett post-hoc test (p<0.05). Additionally, three samples from each group were prepared for scanning electron microscope analysis. Means and standard deviations of microshear bond strength (MPa) were 17.96±1.65, 16.70±1.43, 20.43±1.30 and 33.75±4.72 for Control, Provy, RelyX Temp, and Provitemp, respectively. Statistically significant difference was observed between the Control and Provitemp samples (p=0.0002). Adhesive failures were dominant (50%), followed by cohesive failures with cement (26%), and cohesive failures with dentin (24%). Residues of Provy and Provitemp were observed on the sealed dentin. Provitemp temporary cement sealing increased the microshear bond strength of the resin cement on dentin treated with IDS.
Highlights
An adhesive system is recommended for adhesive cementation of indirect restorations in dental tissue substrates (LEESUNGBOK et al, 2015; NAWAREG et al, 2015)
In order to overcome these problems, the Immediate Dentin Sealing (IDS) technique was developed in the early 1990s (NAWAREG et al, 2015; SULTANA et al, 2007; MAGNE; BELSER, 2002)
The present study aimed to evaluate the interference of different temporary cements on the bond strength of a resin cement with dentin that has undergone IDS
Summary
An adhesive system is recommended for adhesive cementation of indirect restorations in dental tissue substrates (LEESUNGBOK et al, 2015; NAWAREG et al, 2015). Principles of adhesion are well-established based on the work of Nakabayashi et al (1982), in which an interface or inter-diffusion layer, called a hybrid layer, is created by the inter-penetration of resin monomers into enamel and dentin. This principle allows a conservative preparation of the substrates onto which the restorative materials are adhered, as well as further strengthening of the remaining dental structure (NAKABAYASHI et al, 1982). In order to overcome these problems, the Immediate Dentin Sealing (IDS) technique was developed in the early 1990s (NAWAREG et al, 2015; SULTANA et al, 2007; MAGNE; BELSER, 2002)
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
