Biomedical subjects

G E White

Publications and source records attributed to G E White.

At least 19 recordsLinked to original sources

PubMed1992

Metal-ceramic bridges from commercial dental laboratories: alloy composition, cost and quality of fit.

The quality of construction of fixed bridge prostheses directly affects their long-term survival. The cost, alloy composition and marginal fit of bridges made by 30 commercial dental laboratories is assessed. Duplicate models of a three unit bridge preparation were sent to 30 different laboratories, as if required for a patient receiving treatment under the General Dental Service. Material was sent via general dental practitioners, requesting metal-ceramic bridges made from 45% Au alloy, precious metal or non-precious metal. Proximal contacts were overbuilt at 65% of sites and pontic tissue contacts were excessive in all but one bridge. Eight laboratories did not use alloys corresponding to the request made. The mean marginal gaps of non-precious metal bridges (145 microns) were significantly greater than those for 45% gold alloy (106 microns). Marginal fit was poor and a number of factors have been observed, with other postulated, which may have contributed to this problem.

Ceramics↗

PubMed1991

Episcleritis and scleritis.

Episcleritis and scleritis are two common inflammatory disorders encountered by primary care practitioners. Although episcleritis is a self-limited disease that usually resolves within 2 to 3 weeks, severe symptoms may require the use of topical steroids or, in recalcitrant cases, nonsteroidal anti-inflammatory agents (NSAIAs). Scleritis is a painful, generalized inflammation of the eye that is often associated with systemic disease. The necrotizing form of scleritis is the most serious, requiring aggressive treatment with NSAIAs and systemic steroids. Significant sequelae of scleritis include uveitis, glaucoma, cataract, and retinal detachment.

Administration, Topical↗

PubMed1991

Variations in bridge construction in commercial laboratories.

Identical working models for the construction of a porcelain bonded to metal three unit fixed bridge were sent to 30 different commercial dental laboratories in the United Kingdom. The material was sent from general dental practice addresses with the implication for treatment under the National Health Service. Each bridge on its return was examined for acceptability using subjective criteria based on clinical and technical factors. There was a wide variation between bridges which gave cause for concern. Lack of a satisfactory prescription for the laboratories to work to must have played a part in this variation. However, it is stressed that the prescription used in this work was deliberately chosen as representative of that which may be used by clinicians.

Color↗

PubMed1990