%0 Journal Article
%T Staining and calculus formation after 0.12% chlorhexidine rinses in plaque-free and plaque covered surfaces: a randomized trial
%A Zanatta
%A Fabr¨ªcio Batistin
%A Antoniazzi
%A Raquel Pippi
%A R£¿sing
%A Cassiano Kuchenbecker
%J Journal of Applied Oral Science
%D 2010
%I University of S?o Paulo
%R 10.1590/S1678-77572010000500015
%X objectives: studies concerning side effects of chlorhexidine as related to the presence of plaque are scarce. the purpose of this study was to compare the side effects of 0.12% chlorhexidine gluconate (chx) on previously plaque-free (control group) and plaque-covered surfaces (test group). methods: this study had a single-blind, randomized, split-mouth, 21 days-experimental gingivitis design, including 20 individuals who abandoned all mechanical plaque control methods during 25 days. after 4 days of plaque accumulation, the individuals had 2 randomized quadrants cleaned, remaining 2 quadrants with plaque-covered dental surfaces. on the fourth day, the individuals started with 0.12% chx rinsing lasting for 21 days. stain index intensity and extent as well as calculus formation were evaluated during the experimental period. results: intergroup comparisons showed statistically higher (p<0.05) stain intensity and extent index as well as calculus formation over the study in test surfaces as compared to control surfaces. thus, 26.19% of test surfaces presented calculus, whereas calculus was observed in 4.52% in control surfaces. conclusions: the presence of plaque increased 0.12% chx side effects. these results strengthen the necessity of biofilm disruption prior to the start of chx mouthrinses in order to reduce side effects.
%K chlorhexidine
%K adverse effects
%K staining
%K tooth discoloration
%K dental calculus.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1678-77572010000500015&lng=en&nrm=iso&tlng=en