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The Influence of Gingival Inflammation, Tooth Type, and Timing on the Rate of Plaque Formation
Author(s) -
Quirynen Marc,
Dekeyser Christel,
Steenberghe Daniel
Publication year - 1991
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.1991.62.3.219
Subject(s) - gingival inflammation , molar , dentistry , medicine , dental plaque , dentition , tooth surface , inflammation , orthodontics , gingivitis
T he undisturbed supragingival plaque formation was recorded twice over a 100 hours period in 14 healthy dental students; first after induction of gingival inflammation and a second time starting from a healthy gingiva. During each experimental segment plaque formation was recorded on 42 randomly selected and clean teeth at the start and after 6, 12, 24, 30, 36, 48, 54, 60, 72, 84, and 96 hours. Four hours later all teeth up to the first molars were examined. The presence of disclosable plaque was calculated planimetrically as percent of the total labial surface area of the tooth. The rate of plaque formation was found to be significantly greater ( P = 0.001) in the presence of gingival inflammation (+ 29.0%). Moreover, this study indicates an important variation in the plaque growth rate within the dentition; the highest scores were found for the upper premolare, the upper molars, and the lower front teeth. Finally, the rate of plaque formation was found to decrease during the night. J Periodontol 1991; 62:219–222 .