The use of a modified CPITN approach to estimate periodontal treatment needs among adults aged 20-79 years by socio-demographic characteristics in the United States, 1988-94.
Dye BA, Vargas CM. The use of a modified CPITN approach to estimate periodontal treatment needs among adults aged 20-79 years by socio-demographic characteristics in the United States, 1988-94. Community Dent Health. 2002 Dec; 19(4):215-23.