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Bonding to caries affected dentine.
- Source :
-
Dental materials : official publication of the Academy of Dental Materials [Dent Mater] 2018 Sep; Vol. 34 (9), pp. e236-e245. Date of Electronic Publication: 2018 Jun 08. - Publication Year :
- 2018
-
Abstract
- Objectives: Dentine replacement materials are often placed over caries affected dentine (CAD). The aim of this study was to compare the bonding characteristics and interactions of selected hydraulic calcium silicate-based dentine replacement materials to CAD and sound dentine.<br />Methods: Three hydraulic calcium silicate-based dentine replacement materials were assessed: Retro MTA, Biodentine and Theracal LC. Material characterization was done by scanning electron microscopy and X-ray diffraction analyses. Blocks of sound and CAD were prepared and standardized by Vickers microhardness testing. Half of the affected and sound dentine blocks were pretreated with 5.25% NaOCl prior to material placement. The materials were stored either for 1 week or 24 weeks in 37°C in fully saturated conditions. Shear bond strength was assessed at both time periods. Radiopacity of the interfacial dentine was also evaluated to assess the remineralization potential of the dentine replacement materials.<br />Results: The reaction of Theracal was slower than that of the water-based materials. The bond strengths of different materials did not differ after 1 week (P>0.05). The bond strength of Biodentine and Retro MTA increased over time but no change was observed for Theracal. NaOCl pre-treatment deteriorated the bond strength to sound dentine but improvement was observed in affected dentine. Radiopacity changes were observed after 24 weeks.<br />Significance: Biodentine and Retro MTA showed better bonding to CAD. Pretreatment with NaOCl improved the bond strength of dentine replacement materials to CAD.<br /> (Copyright © 2018 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1879-0097
- Volume :
- 34
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Dental materials : official publication of the Academy of Dental Materials
- Publication Type :
- Academic Journal
- Accession number :
- 29891197
- Full Text :
- https://doi.org/10.1016/j.dental.2018.05.017