| risk indicators for periodontal disease in a racially diverse urban population. | a cross-sectional study of 117 subjects from a dental clinic serving a diverse population (i.e., whites, african-americans, native-americans, and asians) was performed to evaluate risk indicators of periodontal disease. gingival crevicular fluid (gcf) and subgingival plaque were taken at the same visit from 4 posterior sites of the most diseased sextant in each subject. age, smoking packyears, beta-glucuronidase (beta g), neutrophil elastase (ne), myeloperoxidase (mpo), fusobacterium nucleatum ( ... | 1996 | 8951624 |