The reversal of localized experimental gingivitis

Abstract

Dental students (20) randomly divided into 4 groups of 5 participated in this trial. The gingival condition was assessed by means of the Gingival Index and measurements of gingival exudate. Plaque accumulation was assessed by means of the Plaque Index. Using plaque-guards, two 21-day periods were allowed for the induction of localized experimental gingivitis around a lethal incisor and adjacent canine in each jaw. The contralateral areas served as controls. Following 21 days of localized plaque accumulation in the mandibular experimental areas, mechanical toothcleaning procedures were introduced at intervals of once a day (Group A), once every 2nd day (Group B), once every 3rd day (Group C) and once every 4th day (Group D). Groups A and B regained gingival health in 10 days. The experiment was then repeated in the maxillary experimental areas. Group A, rinsing once daily with chlorhexidine solution regained gingival health in 4 days. The results obtained in the localized experimental gingivitis model were similar to those reported when totally withdrawing oral hygiene.