Prevalence of Juvenile Periodontitis Among Students at Nagasaki University
Y. Kowashi 1
1 Department of Periodontology, School of Dentistry, Higashi-Nippon-Gakuen University, 1757 Kanazawa, Ishikari-Tobetsu 061-02, Japan
The prevalence of juvenile periodontitis was examined among 641 students aged 19 to 28 years at Nagasaki University. Of all 1520 students in their sophomore year at the university, they were randomly selected for examination in this study. Bitewing radiographs were taken on 49 subjects who had a probing pocket depth of 4 mm or more on six representative teeth (# 16, 21, 24, 36, 41, and 44). Individuals who exhibited bone loss on the bitewing radiographs were taken for further clinical and full-mouth radiographic examination. Three subjects among the 641 adolescents had vertical bone destruction of 3 mm or more from the cemento-enamel junction on first molars and incisors, for a prevalence rate of 0.47%.
