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PubMed1990

[Statistical studies of student clinical practice. 1. Clinical practice of operative dentistry from 1983 to 1989].

Clinical practice has been assigned as a final and very important aspect of study and practice of dental education. In our university, the students are exposed the clinical practice from the latter term of fifth year. This report investigated the protocols of clinical cases from the first to the seventh class of graduates. The results obtained were as follows: 1) The graduates of first class averaged 9 clinical cases. This decreased with the years and the fourth class averaged 5.5 cases. From the sixth class simulator training and mutual practice among the students was introduced and the total average of seventh class was 5.1 cases. 2) The dental practice centers on restoration and 20 percent of all cases were amalgam fillings from the first to four the class. However this decreased from the fifth class and does not take place at present. Composite resin restorations increased. Cast restorations occupied 20 percent of all cases and the proportion hasn't changed. 3) Clinical cases of graduates of fifth class who were first to include treatment between students averaged 7 cases. Mutual treatment practice is useful because of the increase exposure to clinical practice.

Clinical Clerkship↗
PubMed1989

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↗