This study evaluated: I) the effect of photo-activation through ceramics on the degree of conversion (DC) and on the Knoop hardness (KHN) of light- and dual-cured resin cements; and II) two different protocols for obtaining the spectra of uncured materials, to determine the DC of a dual-cured resin cement. Thin films of cements were photo-activated through ceramics [feldspathic porcelain (FP); lithium disilicate glass-ceramics of low translucency (e.max-LT), medium opacity (e.max-MO) and high translucency (e.max-HT); glass-infiltrated alumina composite (IC) and polycrystalline zirconia (ZR)] with thicknesses of 1.5 and 2.0 mm. DC was analyzed by Fourier transform infrared (FTIR) spectroscopy. Two protocols were used to obtain the spectra of the uncured materials: I) base and catalyst paste…
MedWorm: Dentistry
Influence of the interposition of ceramic spacers on the degree of conversion and the hardness of resin cements
Posted in Dental News.
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– September 20, 2013
Professor’s app breaks the mould to create a new one
Paul Mayne, Western News Schulich School of Medicine & Dentistry professor Les Kalman hopes his latest invention, a Virtual Facebow app, will not only assist dentists with diagnosis and treatment, but act as a valuable teaching tool for students.
Posted in Dental News.
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– September 20, 2013
One confirmed hepatitis C infection in ongoing investigation of Tulsa dentist
Tulsa, Okla.—Epidemiological investigators at the Centers for Disease Control and Prevention have confirmed one event of patient-to-patient transmission of hepatitis C virus among the patients of a dentist under investigation for alleged infection control violations.
Posted in Dental News.
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– September 19, 2013
Evaluation of the adaptation of zirconia-based fixed partial dentures using micro-CT technology
The objective of the study was to measure the marginal and internal fit of zirconia-based all-ceramic three-unit fixed partial dentures (FPDs) (Y-TZP – LAVA, 3M-ESPE), using a novel methodology based on micro-computed tomography (micro-CT) technology. Stainless steel models of prepared abutments were fabricated to design FPDs. Ten frameworks were produced with 9 mm2 connector cross-sections using a LAVATM CAD-CAM system. All FPDs were veneered with a compatible porcelain. Each FPD was seated on the original model and scanned using micro-CT. Files were processed using NRecon and CTAn software. Adobe Photoshop and Image J software were used to analyze the cross-sectional images. Five measuring points were selected, as follows: MG – marginal gap; CA – chamfer area; AW – axial wall; AOT – axio…
MedWorm: Dentistry
Posted in Dental News.
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– September 19, 2013
New privacy practice notices required
Washington—Model Notices of Privacy Practices are available from the U.S. Office for Civil Rights for use by HIPAA-covered health care providers and health plans. Most covered entity dental practices must provide notices explaining how the practice may use and disclose patient information and some of the rights patients have to control their information.
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Posted in Dental News.
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– September 18, 2013
Bond strength of self-adhesive resin cements to dry and moist dentin
This study evaluated the effects of humidity conditions and evaluation times on the dentin bond strength (DBS) of two self-adhesive resin cements (RC). The RC used were: RelyX Unicem (3M ESPE) and Clearfil SA Cement (Kuraray Med.). One hundred and twenty coronal portions of bovine incisors (n = 10) were used. Buccal surfaces were abraded in order to expose a flat dentinal surface (180-grit SiC) and to standardize the smear layer formation (600-grit SiC). The humidity conditions tested were: dry (air-dried for 10 s), slightly moist (water application with disposable applicator on dried dentin and water excess removed with absorbent paper), and moist (same application without water removal). The RC were used according to the manufacturers’ recommendations and were applied to prepolymerized r…
MedWorm: Dentistry
Posted in Dental News.
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– September 18, 2013
David L. Jones, DDS & Assoc. in Virginia Beach VA Caters to Baby Boomers in Need of Teeth Repairs
VIRGINIA BEACH, VA, USA, September 17, 2013 / EINPresswire.com / — With a particular emphasis on dental implants, David L. Jones, DDS & Assoc., dentists in Virginia Beach, VA , advises baby boomers-those born between the years 1946 and 1964-to make teeth repairs now as their oral health needs have undergone years of wear and tear.
Posted in Dental News.
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– September 18, 2013
ACA: Status of marketplace implementation
The “Patient Protection and Affordable Care Act,” shorthanded as the ACA and as this series of reports will refer to it, has the potential to reshape health care in America. Expansion of medical insurance coverage, a move toward more integrated care delivery and significant changes in the financing of health care are among the expectations of ACA legislators and regulators.
Posted in Dental News.
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– September 17, 2013
Roald Dahl
“We have so much time and so little to do. Strike that, reverse it.”
Quotes of the Day
Posted in Quote Of The Day.
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– September 17, 2013
The academic dimension of university extension programs
(Source: Brazilian Oral Research)
MedWorm Sponsor Message: The blue sky scrub collection offers something for every medical professional. Offering some of the finest scrub clothing in the world.
Posted in Dental News.
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– September 17, 2013
