Results 1 to 10 of about 1,091,458 (285)

Bisphenol A in dental materials – existence, leakage and biological effects [PDF]

Heliyon, 2019
Objective: Recently, questions have been raised concerning the potential endocrine disrupting effects of bisphenol A (BPA). This substance is a constituent in many different products which we frequently come into contact with, such as food containers and
M. Löfroth, M. Ghasemimehr, A. Falk, P. Vult von Steyern   +3 more
doaj   +8 more sources

The use of micro-CT with image segmentation to quantify leakage in dental restorations [PDF]

Dental Materials, 2015
To develop a method for quantifying leakage in composite resin restorations after curing, using non-destructive X-ray micro-computed tomography (micro-CT) and image segmentation.Class-I cavity preparations were made in 20 human third molars, which were divided into 2 groups. Group I was restored with Z100 and Group II with Filtek LS.
Yuping Li, Alex Fok, Conrado Aparicio
exaly   +4 more sources

A study on the leakage of mercury vapor from pre-capsulated dental amalgam according to storage temperature

Taehan Ch'ikkwa Uisa Hyŏphoe Chi, 2022
Objective: The aim of this study was to measure the amount of mercury vapor from one pre-capsulated dental amalgam according to the storage temperature and to investigate whether the storage temperature suggested by the manufacturer or ISO is appropriate for the storage.Materials and Methods: GK Amalgam and Ultracaps+ were used in this study.
Jae-Sung Kwon, Kwang-Mahn Kim, Seo Young-Bin   +2 more
exaly   +3 more sources

Bacterial Leakage Testing in Dentistry: A Comprehensive Review on Methods, Models, and Clinical Relevance [PDF]

Scientifica
Background The marginal gap increases the rate of bacterial leakage and treatment failure; the measurement of the marginal gap is questionable. The literature revealed that when bacteria get trapped within the smear layer, they can multiply and re ...
Mohmed Isaqali Karobari
exaly   +3 more sources

Evaluation of dental composite shrinkage and leakage in extracted teeth using X-ray microcomputed tomography [PDF]

Dental Materials, 2009
Use X-ray microcomputed tomography (microCT), to test the hypothesis that composite shrinkage and sites of potential leakage in human teeth are non-uniformly distributed and depend on cavity geometry and C-factor.Two holes of equal volume but different dimensions were drilled into the exposed dentin of extracted human molars.
Sheng Lin-Gibson, Jirun Sun, Gary E Schumacher   +2 more
exaly   +4 more sources

Oral chemical ulceration due to iatrogenic hydraulic oil leakage from the dental unit of a surgical handpiece: A case report

Clinical Case Reports, 2023
Key Clinical MessageOral chemical ulceration is a rare condition. The causes differ from misuse of dental material by dentists and over‐the‐counter drugs (OTC) to the herbal ingredients in our foods. Detailed patient history helps to explore the diagnosis and further management of such a lesion, which extend from no intervention in mild cases to ...
K. AL-Hamad
openaire   +4 more sources

Effect of Electrodeposited Gold Coatings on Micro-Gaps, Surface Profile and Bacterial Leakage of Cast UCLA Abutments Attached to External Hexagon Dental Implants

Coatings, 2023
Purpose: The objective of the study was to qualitatively assess the micro-gap dimensions, connecting fitting surface profile, and bacterial leakage of cast high-gold-alloy UCLA abutments, with or without electrodeposited gold coatings attached to external hexagon implants. Materials and methods: Sixteen plastic UCLAs (PUCLAs) were cast with a high-gold-
T. Walton
openaire   +2 more sources

Comparative Study on the Effect of Various Implant-Abutment Connections on Microbial Leakage

Journal of Pharmacy and Bioallied Sciences
Background: Microbial leakage at the implant-abutment interface can lead to peri-implantitis, jeopardizing the long-term success of dental implants. The design and type of implant-abutment connection play a significant role in minimizing this leakage ...
Aditya Acharya, Richa Sahai, K. Anusha Ravindra, Shivani Mishra, Guruprasad Uikey, Mustansir M. Electricwala   +5 more
doaj   +2 more sources

Bacterial leakage around dental restorations: its effect on the dental pulp [PDF]

Journal of Oral Pathology and Medicine, 1982
This study revealed that the quantity of bacteria filtered from the base of Class V cavity restorations were directly related to the type of medicament used. Of the brands studied: composite, amalgam, silicate, and guttapercha – each produced varying numbers of bacterial colonies, whereas zinc oxide and eugenol cement showed none. Histopathology of the
Bergenholtz, G., Cox, Charles F., Loesche, Walter J., Syed, Salam A.   +3 more
exaly   +4 more sources

Ti-15Zr-5.5Cu: A dental titanium alloy with robust antibacterial activity and superior corrosion resistance. [PDF]

iScience
Summary Ti-15Zr-5.5Cu alloys were fabricated via vacuum self-consumable arc melting, yielding a yield strength of 780 ± 10 MPa and tensile strength of 845 ± 8 MPa, indicating excellent tensile properties and plasticity.
Shi N, Li D, Tan J, Chen Y, Cui Z, Wang Q, Bai C, Wu L, Yang Z.   +8 more
europepmc   +2 more sources