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Spectrophotometric Evaluation of the Color Stability of Nanofilled Composites With and Without a Dentin Bonding Agent as a Surface Sealer Following Exposure to Common Beverages.
Cureus
November 2024
Dentistry, Private Practice, Buraydah, SAU.
Objective: The aim of this study is to evaluate the color stability of nanofilled composites with and without the application of a dentin bonding agent (Single Bond Universal Adhesive) as a surface sealer, following exposure to common beverages.
Methods: Eighty specimen disks of a nanofilled composite (Filtek 350XT) were prepared and divided into two groups: one treated without a composite sealer (Group A) and one with a composite sealer (Single Bond Universal Adhesive) (Group B). Each group was subdivided into four subgroups (subgroups A1, A2, A3, and A4 and subgroups B1, B2, B3, and B4), and each subgroup was immersed in a separate container containing coffee, tea, cola, or distilled water for 15 days.
Complementary Nucleobase-Containing Double-Network Elastomers with High Energy Dissipation and Room-Temperature Fast Recovery.
Small
December 2024
Hefei National Research Center for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Elastomers have been widely employed in various industrial products such as tires, actuators, dampers, and sealants. While various methods have been developed to strengthen elastomers, achieving continuously high energy dissipation with fast room-temperature recovery remains challenging, prompting the need for further structural optimization. Herein, high energy dissipated and fast recoverable double-network (DN) elastomers are fabricated, in which the supramolecular polymers of complementary adenine and thymine serve as the first network and the covalently cross-linked soft polymer as the second network.
View Article and Find Full Text PDFRetention rate of giomer S-PRG filler containing pit and fissure sealant applied with or without etching: a randomized clinical trial.
BMC Oral Health
November 2024
Department of Conservative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt.
Background: Pit and fissure sealant is a micro-invasive modality for treating deep and retentive pits and fissures to prevent and/or stop occlusal caries. Every effort needs to be done to enhance sealant retention and survival. The aim of this research is to assess the retention rate of giomer S-PRG filler containing pit and fissure sealant applied with or without etching.
View Article and Find Full Text PDFEffect of two different bonding agents on the microleakage used for fluoride releasing pit and fissure sealant.
Bioinformation
August 2024
Department of Pedodontics and Preventive Dentistry, Maitri College of Dentistry and Research Centre, Durg, Chhattisgarh, India.
Article Synopsis
- The study compared 5th and 7th generation bonding agents to evaluate their effectiveness in preventing microleakage from a fluoride sealant in 40 extracted human premolar teeth.
- Teeth were divided into two groups: one used a 5th generation bonding agent, while the other used a 7th generation agent, both treated with the same sealant.
- Results indicated that the 5th generation agent had more microleakage, but the difference was not statistically significant; the 7th generation agent showed less microleakage and was easier to apply.
A supramolecular hydrogel leveraging hierarchical multi-strength hydrogen-bonds hinged strategy achieving a striking adhesive-mechanical balance.
Bioact Mater
January 2025
School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China.
Article Synopsis
- A new type of tissue-adhesive hydrogel has been created that combines self-complementary monomers and acrylic acid with bioactive epigallocatechin gallate, resulting in a strong and effective medical patch.
- This hydrogel has impressive properties, including a stretchability of 1500%, tensile strength of 2.6 MPa, and rapid adhesion to tissues, outperforming existing commercial sealants.
- It shows potential for medical applications such as rapid hemorrhage control and effective wound healing, with reduced inflammation and scarring, making it a promising option for sutureless wound closure.
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