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Biomedical subjects

N P Clark

Publications and source records attributed to N P Clark.

10 recordsLinked to original sources

Linking postdoctoral general dentistry programs with community-based clinical care settings.

This article presents the results of a small workgroup convened by the American Association of Dental Schools to examine experiences related to establishing and conducting dental education programs that have significant affiliations with community-based clinical care settings. The workgroup meeting is a component of the association's effort to identify and promote innovative and non-traditional methods by which the number of postdoctoral general dentistry (PGD) positions can be increased to meet current demand for PGD education. The participants identified factors and conditions believed to be critical to successful program linkages. The information should be helpful to others as they consider opportunities to establish PGD programs or increase their number of PGD training positions.

Accreditation↗

Evaluation of hand instruments used in operative dentistry: hardness and sharpness.

Four brands of dental instruments were evaluated for Knoop hardness in this study. Enamel hatchets and hoes made from two brands of carbon steel and two brands of stainless steel were tested as received and after 10, 30, and 50 cycles of dry heat or steam autoclave sterilization. Results indicated an initial reduction in hardness in the carbon steels after 10 cycles, then no further hardness deterioration. Both of the stainless steels tested were significantly softer than the two carbon steels before and after sterilization. SEM evaluation of two brands of carbon-steel enamel hatchets and two brands of stainless-steel enamel hatchets before and after planing enamel revealed more rapid dulling of blade edges on the stainless-steel instruments than on the carbon-steel instruments.

Dentistry, Operative↗

The setting of vinyl polysiloxane and condensation silicone putties when mixed with gloved hands.

Neither the vinyl nor the latex gloves tested affected any of the condensation silicone putties tested. The vinyl gloves tested had no effect on any of the vinyl polysiloxane putties. Some brands of latex gloves as received from the distributor caused severe retardation or complete inhibition of setting in most vinyl polysiloxane putties; other brands of latex gloves affected the setting in the vinyl polysiloxane putties to varying degrees. Washing the latex gloves decreased the effect of inhibition of setting on the putty but did not eliminate it. Thus, latex gloves should not be worn while mixing or handling vinyl polysiloxane putties. Putties should not be dispensed while wearing latex gloves as the entire jar can become contaminated. If gloves are removed to mix the putty, hands should be washed thoroughly; however, this violates the barrier technique and is not recommended. Vinyl gloves may be worn over latex gloves (or by themselves), for dispensing and mixing the putty; but the vinyl gloves should not be contaminated with powder from the latex gloves. To assure compatibility, the putty/glove combination should always be checked.

Chemical Phenomena↗

Prevailing academic environment for faculty in operative dentistry: recommendations for change.

All dental schools in the United States were surveyed to determine the academic responsibilities and expectations for promotion and tenure for faculty who teach operative dentistry. Forty-six of the 59 schools responded. Questions were asked concerning job responsibilities for faculty who teach operative dentistry and the requirements for academic promotion and tenure for those faculty members. Most operative dentistry faculty are required to devote extensive time to teaching with modest time allocations and minimal support for research. Promotion and tenure requirements tend to stress research productivity. Recommendations are made for future change.

Dentistry, Operative↗