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Microcomputed tomography assessment of microleakage and void formation under ceramic adhesive precoated orthodontic brackets.
Am J Orthod Dentofacial Orthop
November 2024
Department of Orthodontics, Hamidiye Faculty of Dentistry, University of Health Sciences, Istanbul, Türkiye.
Introduction: This study aimed to evaluate microleakage, voids, and gaps in ceramic adhesive precoated (APC) brackets using microcomputed tomography and investigate their correlation with bond strength.
Methods: A total of 52 human premolars were included in this study. The teeth were randomly divided into 4 groups of 13 teeth each.
Restoration of Non-carious Cervical Lesions: A Brief Review for Clinicians.
Oper Dent
November 2024
Mark W Beatty, DDS, MSE, MSD, MS, research scientist, VA Nebraska-Western Iowa Healthcare System, Omaha, NE, USA; professor and director, Section of Biomaterials, Department of Adult Restorative Dentistry, UNMC College of Dentistry, Lincoln, NE, USA.
Non-carious cervical lesions (NCCLs) become common in individuals over the age of 40 and are progressive. Those that are wedge-shaped in cross-section likely develop hazardous stress concentrations along their sharp axial extent, which can be distributed to lower, safer levels over a larger area via adhesive restoration. Restoration is indicated once a lesion progresses to a minimum restorable axial depth of at least 1.
View Article and Find Full Text PDFResin cements are widely used to cement dental restorations; however, limited studies are available on the bond strength of these cements to computer-aided design/computer-aided manufacturing (CAD/CAM) base metal alloys. This study compared the shear bond strength between a self-etching resin cement (Panavia F 2.0) and a millable cobalt-chromium alloy (Ceramill Sintron) following various surface treatments.
View Article and Find Full Text PDFThe purpose of this study was to evaluate the influence of simplified ceramic surface treatments on the microshear bond strength (μSBS) of 2 resin cements to a zirconia-reinforced lithium silicate (ZLS) material. Blocks of ZLS were sectioned to obtain a total of 90 specimens (1.5 mm thick), which were assigned to 9 different surface treatment protocols (n = 10).
View Article and Find Full Text PDFEvaluation of the Conventional Acid-Etching System and the Self-Etching Primer in Bonding Metallic Orthodontic Brackets: An In-Vitro and In-Vivo Study.
Cureus
October 2024
Department of Orthodontics, The National Dental Center for the Syrian Board and Specialization (NDC) Ministry of Health, Damascus, SYR.
Objective: This study aimed to compare the shear bond strength (SBS) of enamel-bonded orthodontic brackets with the conventional acid etching (CAE) system and the self-etching primer (SEP) in vitro and to compare the clinical performance of both systems when used in the treatment of malocclusion patients.
Materials And Methods: In the first part of the study, 40 extracted human premolars were randomly divided into two groups containing 20 teeth. The first group (the conventional enamel etching group) employed 37% phosphoric acid before bonding the metallic brackets (0.
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