Unlabelled: Design of restorative materials should be focused on promoting not only adhesion but also dentine self-repair processes.
Objective: To ascertain if ZnO and ZnCl2-doped resins are materials able to induce calcium (Ca) and phosphate (P) deposition.
Methods: 48 resin disks were prepared with the following materials: (1) single bond -3M/ESPE-, (2) single bond+ZnO particles 20wt% and (3) single bond+ZnCl2 2wt%. Specimens were polymerised and polished. Bioactivity was tested through a simulated body fluid solution (SBFS) immersion test. At time 24h, 7 d and 21 d surfaces were analyzed by stereomicroscope, high resolution scanning electron microscope (HRSEM), energy-dispersive analysis (EDX), confocal laser Raman, and X-ray diffraction (XRD) for morphological and chemical composition.
Results: Under the stereomicroscope, crystal formations were encountered in both zinc-doped resin adhesives after 7 d of immersion. It was, detected by EDX, that the ZnO-doped resin produced Zn, Ca and P deposition (globular formations were observed by HRSEM) after 7 d. Zn and P crystals were detected by HRSEM and EDX in the experimental ZnCl2-doped resin after 7 d and 21 d. Hopeite formation was identified by Raman on both Zn-doped resins. Single bond did not produce mineral or crystal precipitation.
Conclusions: ZnO-doped resin induced Ca and P deposition after SBFS immersion. On ZnCl2-doped resin hopeite formation was detected, if this hopeite may be further converted into apatite, after SBFS immersion, remains to be ascertained.
Clinical Significance: Bonding with ZnO-doped resin may facilitate incorporation of Ca and P at the interfacial bonding zone.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jdent.2013.12.006 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nickel ion release and surface analyses on instrument fragments fractured beyond the apex: a laboratory investigation.
BMC Oral Health
September 2023
Department of Periodontology, Faculty of Dentistry, Eskisehir Osmangazi University, Eskisehir, 26040, Turkey.
Background: To analyse the changes in surface and nickel ion release characteristics of fractured root canal shaping instruments in a simulated body fluid environment.
Methods: A total of 54 new instruments were studied. The instrument groups consisted of five different NiTi alloys and a stainless-steel alloy.
Surface functionalization of polymer substrates with hydroxyapatite using polymer-binding peptides.
J Mater Chem B
June 2016
Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 12-1 Ichigayafunagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan.
Material-binding peptides are used as non-covalent bond linkers for surface functionalization because they bind to materials under mild conditions without affecting the properties of the materials and are functionalized by conjugating with other molecules. In the present study, the surface functionalization of polyetherimide (PEI) with hydroxyapatite (HAp) was examined using two types of PEI-binding peptides conjugated with other sequences. One peptide consisted of PEI-binding peptide p1 (TGADLNT) and a triasparate sequence for the biomimetic mineralization of HAp in simulated body fluids (SBFs), while the other consisted of p1 and HAp-binding peptide (HABP, CMLPHHGAC) for the immobilization of HAp and amorphous calcium phosphate (ACP) nanoparticles.
View Article and Find Full Text PDFControl of biomimetic hydroxyapatite deposition on polymer substrates using different protein adsorption abilities.
Colloids Surf B Biointerfaces
June 2015
Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, 12-1 Ichigayafunagawara-machi, Shinjuku-ku, Tokyo 162-0826, Japan. Electronic address:
We recently developed a system for coating polystyrene (PS) substrates with hydroxyapatite (HAp) by utilizing serum protein adsorption layers as mediators to induce the heterogeneous nucleation of HAp in simulated body fluids (SBFs). In this study, the selective deposition of HAp on polymer substrate surfaces with different protein adsorption abilities was investigated using PS and poly(methyl methacrylate) (PMMA). Atomic force microscopic observations and the results of a quantitative analysis using a quartz-crystal microbalance (QCM) revealed that the amounts of proteins such as human serum albumin (HSA) and human immunoglobulin G (hIgG) adsorbed on PS substrate surfaces were markedly greater than those on PMMA substrate surfaces.
View Article and Find Full Text PDFBioactivity of zinc-doped dental adhesives.
J Dent
April 2014
Department of Dental Materials, School of Dentistry, Campus de Cartuja s/n, University of Granada, E-18071 Granada, Spain.
Unlabelled: Design of restorative materials should be focused on promoting not only adhesion but also dentine self-repair processes.
Objective: To ascertain if ZnO and ZnCl2-doped resins are materials able to induce calcium (Ca) and phosphate (P) deposition.
Methods: 48 resin disks were prepared with the following materials: (1) single bond -3M/ESPE-, (2) single bond+ZnO particles 20wt% and (3) single bond+ZnCl2 2wt%.
Failure of a glass ionomer to remineralize apatite-depleted dentin.
J Dent Res
March 2010
Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Daegu, Korea.
Remineralization of demineralized dentin lesions adjacent to glass-ionomer cements (GICs) has been reported in the literature. This study tested the hypothesis that a strontium-based GIC can remineralize completely demineralized dentin by nucleation of new apatite crystallites within an apatite-free dentin matrix. Human dentin specimens were acid-etched, bonded with Fuji IX(GP), and immersed in a calcium-and-phosphate-containing 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!