Results 281 to 290 of about 1,016,215 (353)

<i>In Vitro</i> Analysis of the Sealing Ability of Different Root Canal Sealers Under Thermomechanical Stress.

J Pharm Bioallied Sci
George AP, Mathews N, Alattas MH, Hari K, Abulhamael AM, Varghese Job T.   +5 more
europepmc   +1 more source

Determination of Endocrine Disruptor Bisphenol-A Leakage from DifferentMatrices of Dental Resin-based Composite Materials

Current Pharmaceutical Analysis, 2021
Background: Bisphenol A (BPA) derivatives monomers as resins are common components in dental restorative materials and materials used for orthodontic treatment. However, they are a source for BP-A leakage, which can affect adult and child health as an endocrine disruptor.
Naser F. Al‐Tannak, Fawaz Alzoubi, Fatma M. Kareem, Ladislav Novotný   +3 more
semanticscholar   +3 more sources

Evaluation of Bacterial Leakage in Platform-Switching Dental Implant with Morse Taper Connection Under Thermocycling and Loading Effects: In Vitro Study

The International Journal of Oral & Maxillofacial Implants, 2021
The aim of this study was to test in vitro the bacterial microleakage at the Morse taper implant-abutment connection with switched platform subjected to functional load and thermocycling.A total of 48 Morse taper implant-abutment connections with switched platforms (12 implants per group) were used. The abutments were attached to implants and presented
Passent Ellakany, Amr A. Mahrous, Doaa M. Al Eraky, Alanoud Albarrak, Reem AlJindan, Shaimaa M. Fouda   +5 more
semanticscholar   +4 more sources

A Fluorescent Dye Method for Demonstrating Leakage around Dental Restorations

Journal of Dental Research, 1966
SYNOPSIS IN INTERLINGUA UN METHODO A COLORANTES FLUORESCENTE PRO LE DEMONSTRATION DE ESCAPPAMENTO CIRCUM RESTAURATIONES DENTAL.—Le colorantes fluorescente rhodamina B, fluoresceina, e demethylchlortetracyclina esseva usate pro demonstrar microescappamento circum restaurationes dental in dentes bovin. Esseva usate un nove technica de sectionage e breve
Arden G. Christen, David F. Mitchell
semanticscholar   +4 more sources

Use of checkerboard DNA–DNA hybridization to evaluate the internal contamination of dental implants and comparison of bacterial leakage with cast or pre‐machined abutments

Clinical Oral Implants Research, 2009
AbstractAims: To evaluate the checkerboard DNA–DNA hybridization method for detection and quantitation of bacteria from the internal parts of dental implants and to compare bacterial leakage from implants connected either to cast or to pre‐machined abutments.Materials and methods: Nine plastic abutments cast in a Ni–Cr alloy and nine pre‐machined Co ...
Cássio do Nascimento, Rodrigo Edson Santos Barbosa, João Paulo Mardegan Issa, Evandro Watanabe, Izabel Yoko Ito, Rubens Ferreira de Albuquerque   +5 more
semanticscholar   +4 more sources

Bonding agent is a decisive factor in determining the marginal leakage of dental composites subjected to thermal cycling: an in vitro study

Journal of Oral Rehabilitation, 2001
The marginal leakage at the dentine/composite interface in Class II composite restorations subjected to thermal cycling has been effectively evaluated using the silver staining technique. The presence of a bonding agent at the dentine/composite interface is found to improve adhesion.
Meenu Mathew, E. K. Parameswaran Nair, Kavitha Krishnan   +2 more
semanticscholar   +4 more sources

Nitrous Oxide Control in the Dental Operatory: Auxiliary Exhaust and Mask Leakage, Design, and Scavenging Flow Rate as Factors

American Industrial Hygiene Association Journal, 1996
Two new local exhaust systems, intended primarily to control patient mouth emissions of N2O, were installed in a dental operatory, and resulting exposure concentrations to dental personnel were observed. The exposures were found to be typically unaffected by the presence and operation of these new controls.
Keith Crouch, Ova E. Johnston
semanticscholar   +4 more sources

Marginal leakage of dental restorations subjected to thermal stress

The Journal of Prosthetic Dentistry, 1969
Abstract The effects of thermal stress on the microleakage of dental restorations of varying ages were measured with radioisotope. Microleakage around one-week amalgam restorations was increased when the restorations were subjected to 500 temperature cycles.
Henao Guzmán, Marjorie L. Swartz, Ralph W. Phillips   +2 more
openalex   +3 more sources

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Detecting margin leakage of dental composite restorations

Journal of Biomedical Materials Research, 1983
AbstractThe degree of microleakage between a restoration and the cavity wall is difficult to quantify objectively. A silver‐staining method is used and compared to the radioisotope method with results that indicate a superior definition and more accurate evaluation of microleakage.
W, Wu, E, Cobb, K, Dermann, N W, Rupp
openaire   +3 more sources

Evaluation of Leakage Flux out of a Dental Magnetic Attachment

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
A dental magnetic attachment is a device to retain dental prostheses such as overdentures by magnetic attraction. As compared with mechanical attachments, the magnetic attachment has a superior retention properties due to less lateral pressure to its abutment tooth, and hence it has come to be widely used, particularly for retaining overdentures ...
M. Nishida, Yoshinori Tegawa, Y. Kinouchi   +2 more
openalex   +3 more sources