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document
Effects of a chlorhexidine varnish on the gingival status of adolescents . The purpose of this blind study was to determine the effect of a two-stage chlorhexidine varnish , after three months , on the gingival status of 11- to 15-year-old children attending a school in Rio de Janeiro , Brazil . Subjects participating in the study were randomly allocated to control ( C ) and treatment ( T ) groups , n = 53 and n = 57 , respectively . All subjects were matched at baseline on age , salivary levels of mutans streptococci , and caries scores . After elimination of carious lesions , a prophylaxis was given to both groups . The chlorhexidine varnish was then painted on the entire dentition of Group T subjects only . Prior to caries elimination , and again after three months , the gingival index was used to assess the gingival status of study subjects . An average of 106.6 +/- 8.9 and 107.7 +/- 6.2 gingival sites per subject ( four sites per tooth ) in Groups C and T , respectively , were examined by the same calibrated examiner on two occasions . For statistical purposes , data were dichotomized [ ( 0,1 ) ( 2,3 ) ] for the gingival index . Independent t-tests and paired t-tests were used to analyze the data . The percentage of sites per subject with scores of two or three at the baseline were balanced between study groups ( 3.7 +/- 7.1 for T ; 1.8 +/- 3.2 for C ; p = 0.08 ) . After three months , a statistically significant decrease in the average percentage of sites with scores of two or three was demonstrated in the T group ( 0.7 +/- 2.4 , T , p < 0.0001 ; 1.3 +/- 3.0 , C , p < 0.25 ) . The authors concluded that the application of a chlorhexidine varnish significantly improved the gingival health of T subjects for up to three months . A significant improvement in the gingival health could not be demonstrated in the C group .
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Intervention_Pharmacological
chlorhexidine varnish
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Intervention_Pharmacological
chlorhexidine varnish
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Intervention_Pharmacological
prophylaxis
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Intervention_Pharmacological
chlorhexidine varnish
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Intervention_Pharmacological
chlorhexidine varnish
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Outcome_Physical
gingival status
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Outcome_Physical
gingival status
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Outcome_Physical
percentage of sites per subject with scores of two or three
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Outcome_Physical
percentage of sites with scores of two or three
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Outcome_Physical
gingival health
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Outcome_Physical
gingival health
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Participant_Condition
gingival
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Participant_Age
adolescents
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Participant_Condition
.
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Participant_Age
11- to 15-year-old children
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Participant_Sample-size
53
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Participant_Sample-size
57