E Villar do Valle

University of Nantes, Naoned, Pays de la Loire, France

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Publications (3)0.36 Total impact

  • WA Bretz · M I Valente · C Djahjah · E. Villar Do Valle · R J Weyant · J E Nör
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    ABSTRACT: Chlorhexidine, a cationic anti-microbial agent, prevents gingivitis by inhibiting plaque accumulation. Gingivitis is the most predominant form of periodontal disease in children and adolescents. The purpose of this study was to determine the effects of a chlorhexidine varnish on the gingival status of adolescents. The subjects of this study were 10-15 years old adolescents randomly divided into a control (C) and a treatment (T) group, n = 53 and n = 57, respectively. After restoration of all caries lesions, a prophylaxis was given to both C and T groups. A 10 percent chlorhexidine varnish was applied to the entire dentition of T subjects at BL; and one week and three months thereafter. One calibrated examiner determined blindly the Gingival Index (GI) of all subjects. The average percentage of sites per subject with GI scores of 2 or 3 at BL, and after three and six months for the T group were, respectively, 3.68 +/- 7.13, 0.71 +/- 2.43 and 0.16 +/- 0.62. The corresponding values for the C group were 2.11 +/- 3.68, 1.27 +/- 2.94 and 1.59 +/- 5.20. Profile analysis revealed that over a 6-month period subjects of T group had significantly fewer sites with GI scores 2 and 3 than subjects in the C group (p = 0.025). It is concluded that the professional application of a chlorhexidine varnish significantly improved the gingival health of adolescents over a 6-month period.
    No preview · Article · Nov 2000
  • M I Valente · G Seabra · C Chiesa · R Almeida · C Djahjah · C Fonseca · E Villar do Valle · W A Bretz
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    ABSTRACT: 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.
    No preview · Article · Jan 1996 · Journal (Canadian Dental Association)
  • W A Bretz · C A Djahjah · R S Almeida · E Villar do Valle · C Fonseca · I Valente · G Seabra · C Chiesa

    No preview · Article · Oct 1995 · Oral health