抄録
The purpose of this survey is to investigate a trend of new patients at dental clinics. Subjects were collected in anonymized digital data format from JHCDA member clinics which keep the record of new patients’ oral conditions. For children and minors, a DMFT score is kept and for adults, a DMFT score, a number of residual teeth, conditions of periodontia and smoking background are inspected. This 6th report is based on data of 9,421 patients collected at 39 clinics, all new patients from January 1st – December 31st 2010 and 11,256 new patients collected at 33 clinics across the country (18 prefectures) all new patients from January 1st – December 31st 2011. As a result, in the past seven years (2005 - 2011), for 12 year-old boys DMFT changed from 2.30 to 1.69 and for girls DMFT changed from 2.32 to 1.56, for 18 year-old boys DMFT changed from 6.71 to 5.57, and for girls DMFT changed from 9.57 to 7.63, a number of adult residual teeth except for 60 to 64 males it increased slightly from 21.7 to 22.5, females increased from 22.7 to 23.1. This 7 year long investigation on new patients covers the same period as THE SURVEY OF DENTAL DISEASES in Japan, but a different trends were seen in some areas.
