A statistical survey based on laboratory records was performed on the number of fixed and removablepartial dentures fabricated at the dental hospital of Tokyo Medical and Dental University from April 1 toSeptember 30, 1997. A comparison was also performed with a previous survey, which had been carried outin 1986, in order to detect any change and possible alterations in the near future.
From the findings of this statistical survey, the conclusions were as follows:
1. Atotal of 2, 478 fixed and removable partial dentures were fabricated during the six month period in 1997.
2. The 3-unit fixed partial denture (bridge) was most common (63.1%) and the number of bridges decreased as the number of units increased.
3. For the single missing tooth, a fixed bridge was more popular (81.0%) than a removable partial denture.
4. For two missing teeth, there was no difference between the number of fixed bridges and removable partial dentures.
5. The percentage of fixed and removable partial dentures, which were not covered by health insurance, decreased to a large extent in comparison with the survey in 1986.
