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  • Title: Comparative study of electric and manual toothbrushes in patients with fixed orthodontic appliances.
    Author: Heasman P, Wilson Z, Macgregor I, Kelly P.
    Journal: Am J Orthod Dentofacial Orthop; 1998 Jul; 114(1):45-9. PubMed ID: 9674679.
    Abstract:
    The objective of this three treatment, three period, single blind, cross-over trial was to evaluate the efficacy of three toothbrushes in a cohort of children undergoing fixed appliance orthodontic therapy. The brushes used were: (1) Dental Logic HP550 with regular brush head HP5924 (Philips, U.K.); (2) Braun Oral B Plaque Remover (D7) with dedicated orthodontic brush head OD5-1 (Braun AG, Germany); and (3) a manual dedicated orthodontic toothbrush (P35, Oral B Laboratories, Calif.). Sixty orthodontic patients, aged 10 to 16 years and wearing upper and lower fixed appliances, were screened and recruited with parental consent. After an oral soft tissue examination at baseline, the percentage of plaque-covered tooth surfaces and gingival bleeding sites were recorded using visible plaque and gingival bleeding indexes. Each subject was randomly allocated to one of three groups (n = 20) with brushing sequences 1-2-3, 2-1-3, 3-2-1. The first brush was given 2 weeks after baseline (visit 1). The time interval for using each brush was 4 weeks at the end of which visible plaque and gingival bleeding indexes were recorded and a further prophylaxis given. Statistical analysis was undertaken with analysis of variance. Data were analyzed on a site-specific basis; buccal smooth and interproximal surfaces, lingual smooth and interproximal surfaces. At baseline the mean visible plaque index for all subjects were; buccal smooth, 52.5% (+/- 22.5%); buccal interproximal, 70.5% (+/- 18.5%); lingual smooth, 68.5% (+/- 21%); lingual interproximal, 76% (+/- 16%). At visit 1, the plaque scores at all surfaces had reduced significantly compared to baseline, but there had been no active treatment. This was attributed to a Hawthorne effect. Subsequently, there were no significant effects on visible plaque (or gingival bleeding) indexes with any toothbrush at any tooth surfaces. This suggests that the new HP550 is equally effective as specifically designed orthodontic toothbrushes in removing plaque from patients with fixed orthodontic appliances.
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