Tsponsored THIS paper is based on five surveys Greene and Vermillion in five surveys. In the one survey, where the PDI Index was used, plaque, calculus, open contact, mobility, and attrition were scored separately according to indexes9 proposed by Ramfjord. Geographical conditions and methods of oral cleansing were recorded in all of the surveys (Table 1) . Information concerning betelchewing was recorded in three surveys,1-3 use of tobacco in two,3-6 and clinical assessment of nutritional status in one survey.3 Although the same index (Russell's PI) was used for five of the surveys, the results from these surveys are not entirely comparable in regard to scores of severity, since standardization of scoring from one survey to another was attempted only in two of the studies (Greene' and Waerhaug3). All the investigators, except Greene, carefully looked for cases of degenerative periodontal disease (periodontosis). Method The Russell Index8 (PI) for assessment of prevalence and severity of periodontal disease was used in five of the six studies, while Ramfjord's (PDI) Index9 was used in one. Debris and calculus were scored according to the Oral Hygiene Index'0 (OHI) developed by Material The locations and populations included in the surveys are listed in Table
American Journal of Public Health – American Public Health Association
Published: Sep 1, 1968
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