Effect of different surface treatment techniques on the repair strength of indirect composites
Conclusion It may be concluded that (1) the effect of surface treatment procedures on the repair bond strength of indirect composites is depended on the substrate and ageing. (2) Silane did not have a clear overall positive effect on bond strength and (3) artificial ageing had a strong negative influence on the stability of the adhesive interface and on the cohesive strength of one indirect composite resin material, but not the other. (Source: Journal of Dentistry)
Source: Journal of Dentistry - February 4, 2017 Category: Dentistry Source Type: research
A Randomised clinical trial to determine the abrasive effect of the tongue on human enamel loss with and without a prior erosive challenge
Conclusions When enamel was exposed to orange juice prior to licking, tissue loss as a result of tongue abrasion of the eroded surface was increased, and double that of the erosive challenge alone. Licking enamel with the tongue had no perceptible effect on enamel loss in the absence of the erosive challenge. Clinical Significance Enamel wear resulting from tongue abrasion on tooth surfaces softened by acid challenge, can be an unavoidable consequence of oral function. This may account for the pattern of erosive toothwear on palatal and occlusal tooth surfaces, reinforcing the importance of restricting the frequency of di...
Source: Journal of Dentistry - February 1, 2017 Category: Dentistry Source Type: research
Mechanical performance of polymer-infiltrated zirconia ceramics for dental crown restoration
Conclusion The pre-sintering temperature has a significant effect on the microstructure and mechanical properties of polymer-infiltrated zirconia ceramics and the optimal pre-sintering temperature is 1150°C. Clinical significance Specimen pre-sintered at 1150°C shows tooth-like mechanical properties, suggesting a promising restorative material in dental clinic. Moreover, the synthesis process is simple and can be easily performed in a prosthesis laboratory. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 31, 2017 Category: Dentistry Source Type: research
Impact of the CONSORT Statement endorsement in the completeness of reporting of randomized clinical trials in restorative dentistry
Conclusion Although CONSORT endorsement has been linked with some improvement in the completeness of RCTs reports in the biomedical literature, this was not reflected in the present analysis confined to restorative dentistry. More innovative and involved approaches to enhancing reported may therefore be required. Clinical significance: Inadequate reporting of randomized controlled trials can produce important consequences for all stakeholders including waste of resources and implication on healthcare decisions. A broad understandment of the use of reporting guidelines is necessary to lead to better results. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 31, 2017 Category: Dentistry Source Type: research
Synthesis and characterization of a novel resin monomer with low viscosity
In this study, we designed and synthesized a novel macromolecule (tetramethyl bisphenol F acrylate, TMBPF-Ac) with low viscosity, excellent mechanical properties and biocompatibility. It could be used as a monomer for dental resin composites, which could reduce the risk of human exposure to BPA derivatives in the oral environment. In addition, the monomer could be used without diluent, so as to avoid the negative effect of diluent. Methods TMBPF-Ac was synthesized by multistep condensation reaction. Its structure was confirmed by 1H NMR spectra. Different resin mixtures were prepared, and then a variety of performance and...
Source: Journal of Dentistry - January 22, 2017 Category: Dentistry Source Type: research
Red fluorescence of dental plaque in children – a cross-sectional study
Conclusions There were no clinical relevant correlations in this cross-sectional study between the presence of RFP and (early) caries lesions. There were differences in the composition of these phenotypically different plaque samples: RFP contained more Gram-negative, anaerobic taxa and was more diverse than NFP. Clinical significance: The study outcomes provide more insight in the possibilities to use plaque fluorescence in oral health risk assessments. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 20, 2017 Category: Dentistry Source Type: research
Defining Digital Dentistry: A Survey of Recent Literature
Publication date: Available online 11 January 2017 Source:Journal of Dentistry Author(s): Christopher Lynch (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 10, 2017 Category: Dentistry Source Type: research
Inhibition of Streptococcal Biofilm by Hydrogen Water
Conclusions Our data suggest that oral rinse with H-water would be helpful in treating dental biofilm-dependent diseases with ease and efficiency. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 9, 2017 Category: Dentistry Source Type: research
In vitro dentin barrier cytotoxicity testing of some dental restorative materials
Conclusions Cytotoxicity varied with the materials tested and the thicknesses of the dentin disks. Clinical Significance The tested cytotoxicity of materials applied on 300-, 500-, and 1000-μm dentin disks indicates that the clinical use of the test materials (excepting self-etching adhesives) in deep cavities poses a potential risk of damage to the pulp tissues to an extent, depending on the thickness of the remaining dentin. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 7, 2017 Category: Dentistry Source Type: research
The association between loading of restorations and secondary caries lesions is moderated by the restoration material elasticity
Conclusions Loads above a certain threshold significantly increased interfacial (wall) lesion mineral loss. This association was moderated by the elasticity of the placed restoration materials. Clinical significance The clinical relevance of our findings remains unclear, as future studies are needed to understand how exactly both load and material elasticity affect secondary lesion induction. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 4, 2017 Category: Dentistry Source Type: research
Effect of a novel quaternary ammonium silane on dentin protease activities
Conclusion The experimental QAS is a good inhibitor of MMP and cathepsin K activities in demineralized dentin. Clinical Significance The newly developed antibacterial quaternary ammonium silane increases the resistance of dentin collagen to degradation by inhibiting endogenous matrix metalloproteinases and cysteine cathepsins. The quaternary ammonium silane cavity disinfectant is promising for use as a protease inhibitor to improve durability of resin-dentin bonds. (Source: Journal of Dentistry)
Source: Journal of Dentistry - January 3, 2017 Category: Dentistry Source Type: research
Micro-filled resin infiltration of fissure caries lesions in vitro
Conclusion It can be concluded that MFIR seems to be suitable to fill fissures and cavities like a fissure sealant and that it penetrates fissure caries lesions similarly deep as the conventional infiltrant after an experimental etching regime. Clinical significance The MFIR seems to combine advantages of the fissure sealing and the caries infiltration procedure. (Source: Journal of Dentistry)
Source: Journal of Dentistry - December 29, 2016 Category: Dentistry Source Type: research
Nanoscale chemical surface characterization of four different types of dental pulp-capping materials
Conclusions The XPS results showed that Ca in the surface layer could vary from 0 to 18%, depending on the material. Aliphatic carbons, from the polymerization reactions, especially in Dycal and TheraCal, were found to mask the other components. Clinical significance This study compares, for the first time, the chemical composition of the first atomic layers of four pulp-capping materials. This information is relevant because the interaction between pulpar cells and the material's outermost atomic layer is an important factor for leading the pulpal response. (Source: Journal of Dentistry)
Source: Journal of Dentistry - December 29, 2016 Category: Dentistry Source Type: research
Erratum to ‘The durability of a hydroxyapatite paste used in decreasing the permeability of hypersensitive dentin’ [J. Dent. 51 (2016) 1–7]
Publication date: Available online 23 December 2016 Source:Journal of Dentistry Author(s): Ahmed Samir Bakry, Yas Al-Hadeethi, Mir Ali Naqi Razvi (Source: Journal of Dentistry)
Source: Journal of Dentistry - December 23, 2016 Category: Dentistry Source Type: research
Corrigendum to “Effects of fiber-glass-reinforced composite restorations on fracture resistance and failure mode of endodontically treated molars” [J. Dent. 53 (2016) 82–87]
Publication date: Available online 16 December 2016 Source:Journal of Dentistry Author(s): Nicola Scotti, Alberto Forniglia, Riccardo Michelotto Tempesta, Allegra Comba, Massimo Carlo Saratti, Damiano Pasqualini, Mario Alovisi, Elio Berutti (Source: Journal of Dentistry)
Source: Journal of Dentistry - December 17, 2016 Category: Dentistry Source Type: research
