Abstract
Clinical and statistical observations during the year 1991 at the department of dentistry and oral surgery were made on the new patients of those who are the outpatients at the Keio University Hospital.
1) The total number of patients were 198, 80 males and 118 females.
2) Concerning age distribution, the majority was in their fifties and the average was 45.1 years old.
3) Concerning monthly distridution, most patients came in February and August.
4) More patients were from internal medicine.
5) On the patient numbers categorized by disease at other departments, the majority was circulatory disease.
6) On the number of patients categorized by disease at our department, the largest number was dental caries and marginal periodontitis, followed by disease of pulpitis and apical periodontitis.
7) Concerning the distribution of the medical treatment at our department, the largest number was medication, followed by unnecessary treatment and examination.