In vitro mechanical stimulation facilitates stress dissipation and sealing ability at the conventional glass ionomer cement-dentin interface
Conclusions Mechanical stimuli diminished the resistance to deformation and increased the stored energy at the GIC-dentin interface. The conventional GIC induced less porosity and nanoleakage than RMGIC. The RMGIC increased nanoleakage at the porous interface, and dye sorption appeared within the cement. Both cements created amorphous and crystalline apatites at the interface depending on the type of mechanical loading. Clinical significance Remineralization, lower stress concentration and resistance to deformation after mechanical loading improved the sealing of the GIC-dentin interface. In vitro oral function will favor...
Source: Journal of Dentistry - April 10, 2018 Category: Dentistry Source Type: research
Influence of zinc oxide quantum dots in the antibacterial activity and cytotoxicity of an experimental adhesive resin
Conclusion ZnOQDs provided antibacterial activity when doped into an experimental adhesive resin without cytotoxic effect for pulp fibroblasts. Thus, the use of ZnOQDs is a strategy to develop antibiofilm restorative polymers with non-agglomerated nanofillers. Clinical Significance ZnOQDs are non-agglomerated nanoscale fillers for dental resins and may be a strategy to reduce biofilm formation at dentin/restoration interface with no cytotoxicity for pulp fibroblasts. (Source: Journal of Dentistry)
Source: Journal of Dentistry - April 10, 2018 Category: Dentistry Source Type: research
Clinical performance of glass ionomer cement and composite resin in Class II restorations in primary teeth: a systematic review and meta-analysis
Conclusions GIC and CR presented similar clinical performance for all criteria analyzed, except for secondary carious lesions, in which GIC presented superior performance, especially for the RM/GIC and with rubber dam isolation. (Source: Journal of Dentistry)
Source: Journal of Dentistry - April 9, 2018 Category: Dentistry Source Type: research
Do HEMA-free adhesive systems have better clinical performance than HEMA-containing ones in non-carious cervical lesions? A systematic review and meta-analysis
Conclusions HEMA-free and HEMA-containing adhesive systems showed similar clinical performance in NCCL restorations. Clinical significance The presence of the monomer HEMA does not influence the clinical performance of the NCCL restoration. (Source: Journal of Dentistry)
Source: Journal of Dentistry - April 9, 2018 Category: Dentistry Source Type: research
Resin cements formulated with thio-urethanes can strengthen porcelain and increase bond strength to ceramics
Conclusion The use of specific thio-urethane oligomers as components of RCs increased both the biaxial flexural strength of the porcelain-RC structure and the μSBS to LD and ZR. Clinical Significance The current investigation suggests that it is possible to reinforce the porcelain-RC pair and obtain higher bond strength to LD and ZR with RCs formulated with selected types of thio-urethane oligomers. (Source: Journal of Dentistry)
Source: Journal of Dentistry - April 6, 2018 Category: Dentistry Source Type: research
Effect of an experimental mouth rinse containing NaF and TiF4 on tooth erosion and abrasion in situ
CONCLUSION The experimental NaF/TiF4 mouth rinse has a similar protective effect to the commercial one against tooth wear in situ. CLINICAL SIGNIFICANCE The experimental NaF/TiF4 solution protected against tooth wear in situ, regardless of the challenge (erosion or erosion plus abrasion), for both enamel and dentine, similarly to a commercial solution (tin/F-Elmex®) applied for this proposal. This result supports the conduction of clinical trials and a possible application of this solution in the future. (Source: Journal of Dentistry)
Source: Journal of Dentistry - April 3, 2018 Category: Dentistry Source Type: research
The effect of dentine pre-treatment using bioglass and/or polyacrylic acid on the interfacial characteristics of resin-modified glass ionomer cements
Conclusions Dentine pre-treatment using BAG air-abrasion might be a suitable strategy to enhance the bonding performance and durability of RMGIC applied to dentine. The use of PAA conditioner in smear layer-covered dentine may increase the risk of degradation at the bonding interface. Clinical significance A combined dentine pre-treatment using bioglass followed by PAA may increase the bond strength and maintain it stable over time. Conversely, the use of PAA conditioning alone may offer no significant contribute to the immediate and prolonged bonding performance of modern RMGICs. Graphical abstract (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 31, 2018 Category: Dentistry Source Type: research
Enhancing predicted fluoride varnish efficacy and post-treatment compliance by means of calcium-containing gummy bears
Conclusion This study failed to demonstrate an effect of calcium-containing gummies in enhancing plaque fluoride retention. Clinical Significance The consumption of calcium-containing gummies prior to fluoride varnish application does not promote greater intra-oral fluoride retention or better adherence to post-treatment instructions. (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 31, 2018 Category: Dentistry Source Type: research
Effect of phytate and zinc ions on fluoride toothpaste efficacy using an in situ caries model
Conclusions <ABS-P>Results: suggest phytate has little impact on fluoride’s ability to promote early-stage lesion remineralisation or prevent more advanced lesion demineralisation in this in situ caries model. Similarly, results suggest zinc ions do not impair fluoride efficacy. Clinical significance Toothpastes may contain therapeutic or cosmetic agents that could interfere with fluoride’s caries prevention efficacy. The present in situ caries study has demonstrated that phytate, added to provide enhanced extrinsic stain removal/prevention, and zinc, added to inhibit malodour, do not impair fluoride eff...
Source: Journal of Dentistry - March 28, 2018 Category: Dentistry Source Type: research
Effect of shading technique and thickness on color stability and translucency of new generation translucent zirconia
Conclusions Neither shading technique nor tested thicknesses affected the color of translucent zirconia. Shading technique and thickness affected the RTP of translucent zirconia. The RTP was inversely affected with the thickness of the material. Externally shaded zirconia presented higher RTP than preshaded zirconia for specimens thicker than 1 mm. Clinical significance Discoloration with coffee was insignificant for the tested translucent zirconia in tested thicknesses (1, 1.5, 2 mm). When a translucent restoration is intended, thinner externally shaded translucent zirconia restorations should be preferred instead of...
Source: Journal of Dentistry - March 27, 2018 Category: Dentistry Source Type: research
3D-Image Analysis of the Impact of Toothpaste Abrasivity on the Progression of Simulated Non-Carious Cervical Lesions
Conclusions 3D-image subtraction was able to quantify and differentiate tooth loss, but only at advanced stages. The progression of NCCLs was more evident and faster for highly abrasive slurries. Clinical significance Upon root dentin exposure, brushing with lower abrasive dentifrices is advisable to reduce the risk for NCCLs development. (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 26, 2018 Category: Dentistry Source Type: research
Reversing the Effects of 2% Lidocaine: A Randomized Controlled Clinical Trial
Conclusions Phentolamine Mesylate hastens the return to normal soft tissue sensation and function by approximately one hour compared to a control injection of water. Clinical Significance Phentolamine Mesylate can be considered a safe and effective way of reducing the duration of soft tissue anesthesia following a dental appointment. This controlled clinical trial is registered at the National Institutes of Health (ClinicalTrials.gov) #NCT02861378. (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 20, 2018 Category: Dentistry Source Type: research
Antimicrobial efficacy of an apical negative pressure root canal irrigation system against intracanal microorganisms
Conclusions Microbial elimination may be achieved with 8.25% NaOCl delivered via the EndoVac apical negative pressure irrigation device for 60 seconds. Clinical Significance With the use of the EndoVac apical negative pressure irrigant delivery system, optimal elimination of the intracanal bacterial load can only be achieved when sodium hypochlorite is delivered via the MicroCannula for at least 60 seconds per canal. (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 20, 2018 Category: Dentistry Source Type: research
The Feasibility of Characterising the Effects of Dental Post-Operative Discomfort and Sensitivity Over Time
Conclusions Text messaging to solicit PODDS is feasible and can potentially be used to assess the efficacy of treatments designed to minimise or reduce PODDS. (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 16, 2018 Category: Dentistry Source Type: research
Tooth sensitivity with a desensitizing-containing at-home bleaching gel —a randomized triple-blind clinical trial
Conclusions The incorporation of potassium nitrate and fluoride sodium in 10% carbamide peroxide at-home bleaching gel tested in this study did not reduce the TS and does not affect color change (RBR-4M6YR2). (Source: Journal of Dentistry)
Source: Journal of Dentistry - March 16, 2018 Category: Dentistry Source Type: research
