Abstract
A study was made of 11,425 crowns and 2,385 bridges which had been fabricated for 5,588 patients at the Prosthetic Clinic of Matsumoto Dental College during the fourteen-year period, from January 1973 to December 1986. Some of the results were as follows: 1. 753 patients, 1,585 crowns and 372 bridges in 1983 were the most numerous in all the survey years. 2. The rate of vital teeth of crowns has increased from 1984. 3. Of crowns, 22.1% and of bridge retainers, 22.3% were fabricated as porcelain fused to metal crown in 1985. 4. The rate of resin facing crowns of crowns and bridge retainers increased sharply in 1986. 5. Of crowns, 19.0% and of bridge retainers, 30.5% were fabricated as partial coverage crowns in 1986. 6. The rate of more than 5-unit bridges increased from 1982 to 1985.
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