Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Purpose: This study evaluated the effect of delayed bonding and antioxidant application (AA, 10% sodium ascorbate) after internal bleaching (35% carbamide peroxide) on the shear bond strength of an adhesive cement to enamel.
Materials And Methods: Eighty-four human maxillary central incisors were endodontically treated. The control group remained unbleached with no AA. Experimental groups were all internally bleached. The buccal enamel was finished and polished with metallographic paper to a refinement of #600, in order to obtain a 5-mm(2) flat bonding area. An adhesive cement (Clearfil Esthetic) was placed into a plastic tube with internal diameter of 3 mm and a 3-mm height and cured on the enamel. Bonding occurred either immediately after bleaching (group Im), a 7-day delay (group 7), or a 14-day delay (group 14), and half the specimens were treated with antioxidant application (groups Im-AA, 7-AA, and 14-AA). Shear bond strength testing was performed on a universal testing machine, and data were analyzed with ANOVA and Fisher test (5%).
Results: Delaying of bonding is a useful factor for enhancing shear bond strength (p < 0.05), whereas AA only enhanced shear bond strength after 7 days delayed bleaching (p < 0.05). The highest bond strength was noted in groups 7-AA (20.51 ± 4.5 MPa), 14 (19.82 ± 4.6), 14-AA (20.27 ± 4.4), and control (20.51 ± 5.1), which were not significantly different from each other.
Conclusions: After internal bleaching, adhesive cementation to enamel is recommended only when delayed 14 days, or delayed 7 days with sodium ascorbate application.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/jopr.12303 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Starch crystalline types modulate myofibrillar protein aggregation and its functional properties in gelling and emulsifying systems.
Food Chem
September 2025
Nantong Food and Drug Supervision and Inspection Center, Nantong 226001, PR China.
Different starch crystal structures significantly influence meat product quality, though their specific impacts on myofibrillar protein (MP) functionality remain unclear despite industry demand for optimized ingredients. This study compared how potato, corn, mung bean, and pea starches affect MP properties in minced pork. Our findings reveal that starch-protein interactions fundamentally regulate MP gel and emulsion properties through the following mechanisms: First, starch promotes protein aggregation by enhancing hydrophobic interactions and disulfide bond formation, affecting gel network crosslinking.
View Article and Find Full Text PDFA systematic review using a multi-layered criteria framework for assessing the validity and reliability of velocity monitoring devices in resistance training.
PLoS One
September 2025
School of Health & Society, University of Salford, Salford, Greater Manchester, United Kingdom.
Background: Velocity-Based Training (VBT) is an emerging method in resistance training for objectively prescribing and monitoring training intensity and neuromuscular function. Given its growing popularity, assessing the validity and reliability of VBT devices is critical for strength and conditioning coaches.
Objective: The primary purpose of this review was twofold: (1) to identify and address methodological gaps in current assessments of VBT device validity and reliability, and (2) to propose and apply a novel, multi-layered, criterion-based framework-developed in collaboration with statisticians and domain experts-for evaluating these devices.
Ideal strength and emergent superconductivity in a three-dimensional sp-carbon network cT16.
Phys Chem Chem Phys
September 2025
School of Physics, Changchun University of Science and Technology, Changchun 130022, China.
The design of carbon allotropes that simultaneously exhibit mechanical robustness and quantum functionalities remains a longstanding challenge. Here, we report a comprehensive first-principles study of cT16, a three-dimensional sp-hybridized carbon network with topologically interlinked graphene-like sheets. The structure features high ideal tensile and shear strengths, with pronounced anisotropy arising from strain-induced bond rehybridization and interlayer slipping mechanisms.
View Article and Find Full Text PDFDual-functionalized lignin as a sustainable modifier for high-performance phenol-formaldehyde adhesives in plywood production.
RSC Adv
September 2025
Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Techniques (FST-BM), University of Sultan Moulay Slimane (USMS) Béni-Mellal 23000 Morocco
Biopolymers derived from natural sources are sustainable, non-toxic, and biodegradable, making them attractive alternatives to fossil-based polymers. Among these, lignin has garnered significant attention due to its potential in adhesive applications. In this study, lignin was extracted from redwood ( L.
View Article and Find Full Text PDFThe development of novel optical self-healing materials holds significant importance for applications in anticounterfeiting and information encryption, but remains a formidable challenge. This study presents a fluorescent self-healing material designed for 2D/3D printing anticounterfeiting applications, exhibiting outstanding properties such as high transmittance, excellent mechanical strength, and remarkable self-healing efficiency. The triple dynamic bond networks provide robust mechanical and self-healing capabilities, with the polymer demonstrating a tensile strength of 26.
View Article and Find Full Text PDF