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Radiofrequency-Induced Heating of Amalgam Restorations and Dental Implants during 1.5T Magnetic Resonance Imaging.
Front Dent
April 2024
Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran.
This study aimed to evaluate radiofrequency-induced heating of different amalgam restorations and dental implants during 1.5T magnetic resonance imaging (MRI). Standardized class I cavities (5 mm long, 3 mm wide, and 3 mm deep) were prepared on the occlusal surface of 45 extracted human third molars.
View Article and Find Full Text PDFDental Metal Matrix Composites: The Effects of the Addition of Titanium Nanoparticle Particles on Dental Amalgam.
Materials (Basel)
April 2024
Department of Mechanical Engineering, North Carolina A & T State University, Greensboro, NC 27411, USA.
Dental amalgams have been used by dentists for the restoration of posterior human teeth. However, there have been concerns about the release of mercury from amalgams into the oral cavity. The objective of the present research is to study the effect of titanium (Ti) nanoparticles on the microstructural mechanism of the release of mercury vapor in two commonly used brands of dental amalgam (the Dispersalloy: 11.
View Article and Find Full Text PDFArticle Synopsis
- This study investigates how different adhesive bonding agents affect marginal sealing quality in class II amalgam restorations to address the issue of microleakage in restorative dentistry.
- Forty human premolar and molar teeth were divided into four groups and treated with different adhesives or served as a control; after thermocycling and immersion in a dye solution, they were evaluated for microleakage.
- Findings revealed that the PQ1 bonding agent provided the best sealing with the lowest microleakage, while the Amalgam Liner resulted in the highest levels of leakage.
The effect of surface conditioning on the bond strength of resin composite to amalgam.
J Dent
January 2012
University of Bristol Dental Hospital & School, Lower Maudlin Street, Bristol BS1 2LY, United Kingdom.
Objectives: This study evaluated the effect of different surface conditioning methods on the tensile bond strength (TBS) and integrity of the amalgam-resin composite interface, using commercially available restoration repair systems.
Methods: One hundred and sixty Gamma 2 amalgam specimens were stored in artificial saliva for 2 weeks and then randomly assigned to one of the following conditioning groups (n=20/group): Group 1: air abrasion, alloy primer and 'Panavia 21', Group 2: air abrasion and 'Amalgambond Plus', Group 3: air abrasion and 'All-Bond 3', Group 4: diamond bur, alloy primer and 'Panavia 21', Group 5: diamond bur and 'Amalgambond Plus', Group 6: diamond bur and 'All-Bond 3', Group 7: silica coating technique, and Group 8: non-conditioned amalgam surfaces (control group). Subsequently, resin composite material was added to the substrate surfaces and the amalgam-resin composite specimens were subjected to TBS testing.
Bond strength comparison of amalgam repair protocols using resin composite in situations with and without dentin exposure.
Oper Dent
February 2011
University of Zurich, Center for Dental and Oral Medicine, Dental Materials Unit, Clinic for Fixed and Removable Prosthodontics and Dental Materials Science, Zurich, Switzerland.
The replacement of defective amalgam restorations leads to loss of tooth material and weakens the tooth, creating an increased risk of cusp fracture. The repair of such defects is a minimal intervention technique. The current study compared the repair bond strengths of a resin composite to amalgam and an amalgam-dentin complex after various surface conditioning methods.
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