Zanatta FB, Antoniazzi RP, Rösing CK. Staining and calculus formation after 0.12% chlorhexidine rinses in plaque-free and plaque covered surfaces: a randomized trial.
J Appl Oral Sci 2011;
18:515-21. [PMID:
21085810 PMCID:
PMC4246385 DOI:
10.1590/s1678-77572010000500015]
[Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 09/28/2009] [Indexed: 11/21/2022] Open
Abstract
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.
Conclusion
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.
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