For the purpose of endowing dental resin with antibacterial activity without impairing physicochemical properties, polymerizable quaternarized thiazole salts (QAMEMT-x) with different alkyl chain length (12, 14, and 16) were synthesized and characterized by FT-IR and H-NMR spectra. After adding 5 wt% of QAMEMT-x into Bis-GMA/TEGDMA (50/50, wt./wt.) dental resin, double bond conversion (DC), volumetric shrinkage (VS), flexural strength (FS) and modulus (FM), water sorption (WS) and solubility (SL), and antibacterial activity against Streptococcus mutans (S. mutans) of obtained resin systems were investigated. The results showed that 5 wt% of QAMEMT-x had no influence on DC, FS, FM, WS, and SL (α > 0.05), while could reduce VS of dental resin (α < 0.05). Cured resins with 5 wt% of QAMEMT-x all showed antibacterial activity against S. mutans, and QAMEMT-16 could endow cured resin with the strongest antibacterial activity which showed an antibacterial efficiency of more than 99%.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jmbbm.2022.105183 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Coating Agents for Resin Composites: Effect on Color Stability, Roughness, and Surface Micromorphology Subjected to Brushing Wear.
Oper Dent
January 2025
*Roberta Tarkany Basting, DDS, MSc, PhD, Professor, Restorative Dentistry Department, Faculdade São Leopoldo Mandic, São Paulo, Brazil.
This study evaluated the influence of six resin composite coating agents on color stability and surface roughness after toothbrushing abrasion. Discs (Ø6 mm x 2 mm) of nanofilled resin composite (Filtek Z350XT) were prepared for application of coating agents (n=10): control (absence), two surface sealants (PermaSeal and BisCover LV), two adhesive systems (Scotchbond Multi-Purpose Adhesive/3M Oral Care and Single Bond Universal), and two modeling liquids (Modeling Resin and Composite Wetting Resin). CIELab*, WID, and color change (ΔEab, ΔE00, and ΔWID) were analyzed at baseline, after finishing and polishing, after application of coating agents, after coffee staining (simulating 30 days and one year of staining), and after toothbrushing abrasion.
View Article and Find Full Text PDFFracture Resistance of Chairside CAD/CAM Lithium Disilicate Partial and Full Coverage Crowns and Veneers for Maxillary Canines.
Oper Dent
January 2025
Nathaniel C Lawson, DDS, PhD, director of Master of Science in Dental Biomaterials program and associate professor, Department of Clinical and Community Sciences, University of Alabama at Birmingham School of Dentistry, Birmingham, AL, USA.
Objective: This study aimed to assess the fracture resistance of chairside computer assisted design and computer assisted manufacturing (CAD-CAM) lithium disilicate partial and full-coverage crowns and veneers for maxillary canines.
Methods And Materials: Forty-eight restorations for maxillary right canines (12 per group) were designed as follows: (1) partial crown with finish line in the upper middle third; (2) partial crown with finish line in the lower middle third; (3) traditional labial veneer; and (4) traditional full-coverage crown. Restorations were fabricated out of lithium disilicate (Amber Mill, Hassbio) using a chairside CAD-CAM system (Cerec Dentsply Sirona).
Properties of New Partially Crystallized Lithium Disilicate CAD-CAM Materials.
Oper Dent
January 2025
*Kraig S. Vandewalle, DDS, MS, Col (ret), USAF, DC, Air Force Consultant in Dental Research Advanced Education in General Dentistry Residency, AF Postgraduate Dental School, Joint Base San Antonio - Lackland, TX, USA; Uniformed Services University of the Health Sciences, Bethesda, MD, USA.
Objective: The purpose of this study was to compare the optical, mechanical, and biological properties of two new, inexpensive lithium disilicate (LS2) materials (Lodden (LOD), LD Medical Technology; and BeautyZir (BZ), BeautyZir Technology) to a clinically established LS2 material (IPS e.max CAD (EMAX), Ivoclar Vivadent).
Methods And Materials: The optical properties of the translucency parameter (TP) and opalescence parameter (OP) were obtained with a dental spectrophotometer.
Printed versus heat-polymerized resin for occlusal devices: Evaluation of physical and mechanical properties after brushing and microbial adhesion.
J Prosthodont
January 2025
Department of Dental Materials and Prosthesis, Ribeirão Preto Dental School, University of São Paulo (USP), Ribeirão Preto, Brazil.
Purpose: To evaluate the physical and mechanical properties after brushing and microbial adhesion of printed resins (PRs) and heat-polymerized resins (HRs) for occlusal devices (ODs).
Materials And Methods: Knoop microhardness and roughness were evaluated in three measurements before and after brushing with detergent or dentifrice. Flexural strength and modulus of elasticity were assessed by 3-point bending, and the adhesion of Candida albicans and Streptococcus mutans was evaluated by colony-forming units per milliliter (CFU/mL) and metabolic activity using the XTT assay only without brushing.
Tibial stem extension versus standard configuration in primary cemented total knee arthroplasty: systematic review and meta-analysis.
J Orthop Surg Res
January 2025
Department of Epidemiology, School of Health, Mashhad University of Medical Science, Mashhad, Iran.
Background: In order to increase the stability of tibial component in total knee arthroplasty (TKA), intramedullary stem extensions (SE) have been developed. The aim of this systematic review and meta-analysis is to address the critical knowledge gap on post-operative outcomes and complications rate comparison between tibial component with SE compared to the tibial component standard configuration (SC) in primary cemented TKA.
Methods: We conducted a comprehensive search of online databases, including Pubmed, Embase, ISI Web of science, Cochrane Library, and Scopus, using the following MeSH terms, (total knee arthroplasty) OR (TKA) OR (total knee replacement) AND (Tibial stem) OR (stem extension) OR (long stem).
Want 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!