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The purpose of this study was to investigate the prevalence and treatment needs of periodontal disease in the 1,150 university students (male: 726, female: 424) by using simplified Community Periodontal Index of Treatment Needs (CPITN-S). The results were as follows: 1. Approximately 85% of all the subjects have something wrong in periodontal tissue. If examined in detail; 1) Code 4: a group (1.6%) who had a deep pocket more than 6 mm. 2) Code 3: a group (20.1%) who had a shallow pocket 4 to 5 mm. 3) Code 2: a group (55.9%) who had supra- or subgingival calculus. 4) Code 1: a group (7.5%) who had bleeding on probing only. 2. As for treatment needs (TN), approximately 78% of the subjects need to receive professional prophylaxis and more complex treatment including periodontal surgery (TN 2-3). 3. Average time required to examine one subject was about one minute, so we could cut down the measuring time. From this point, we have understood that simplified CPITN was greatly effective to curtail the time for the primary screening of periodontal disease in the young age group.

Epidemiological study of periodontal disease. Mass examination in University students with CPITN.