Site-specific association between supragingival plaque and bleeding upon probing in young adults |
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Authors: | H-P Müller A Heinecke T Eger |
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Institution: | (1) School of Dental Medicine, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany, DE;(2) Institute of Medical Informatics and Biostatistics, University of Münster, Hittorfstr. 17, 48129 Münster, Germany, DE;(3) Department of Periodontology, German Armed Forces Central Hospital, Rübenacher Str. 170, 56072 Koblenz, Germany, DE |
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Abstract: | The aim of the present study was to consider supragingival plaque as a risk factor for gingivitis in a group of young adults
without destructive periodontal disease. A total of 127 subjects, 17 to 30 years of age, participated. Periodontal probing
depth, clinical attachment level as well as bleeding upon probing and supragingival plaque was assessed at 6 sites of every
tooth present. The individual odds ratios between plaque and bleeding ranged between 0.237 and 66.6. 23% volunteers had an
odds ratio of below 1.2. Only 15% individuals presented with an attributable risk of supragingival plaque for bleeding upon
probing of 50% or more. Overall, the odds of bleeding, adjusted for periodontal probing depth, was increased by 67% in the
presence of plaque. Large differences were observed at different teeth with the highest odds ratio at mandibular premolars
with 2.557 (95% confidence interval 2.033–3.216) and the lowest at maxillary molars with 1.355 (1.161–1.732). It was concluded
that there was high interindividual and intraindividual variation of the relative risk for bleeding in the presence of plaque.
The observed low overall relative risk has important consequences in educational and health care programmes since the risk
of supragingival plaque which is actually attributable for the observed bleeding on probing may be rather small.
Received: 29 February 2000 / Accepted: 13 June 2000 |
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Keywords: | Supragingival plaque Gingivitis Risk factor analysis GEE methods Site specificity |
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