CATEGORY 60 AUSTRALASIAN DENTIST The purpose of this in vitro study was to determine how two toothbrushes with highly tapered-end bristle designs compared to a conventional, slightly tapered toothbrush. Toothbrushing was carried out in the laboratory in order to evaluate the simulated subgingival efficacy of the three toothbrush designs. Clinical studies on toothbrushes with tapered bristles Oral Health & Preventive Dentisty 2/2003, S. 111-118 Cleaning efficacy of a manual toothbrush with tapered filaments By Christof E. Dörfer/ Eric R. von Bethlenfalvy/ Birgit Kugel/ Thomas Pioch J Clin Dent. 1997;8(6):156-8. Evaluation of tapered-end toothbrushes regarding subgingival access efficacy. By Hotta M, Yoshida T, Sekine I, Imada S, Sano A. Department of Endodontics and Operative Dentistry, Asahi University School of Dentistry, Gifu, Japan. The performance of the three brushes was assessed by measuring the "subgingival regions" of gold-coated typodont left maxillary central teeth where the gold coating had been removed during brushing. The two toothbrushes with highly tapered bristles were statistically significantly (p < 0.01) more effective in removing the gold coating than the conventional toothbrush with slightly tapered bristles on the subgingival area on the anterior typodont teeth. PMID: 9586531 [PubMed - indexed for MEDLINE] Purpose: To compare the cleaning efficacy of (A): a newly developed manual toothbrush with tapered filaments (meridol®, GABA International, CH-Münchenstein) with (B): a standard flat trim manual toothbrush (ADA reference toothbrush) in vivo. Materials and Methods: 87 healthy participants took part in this study. Subjects were asked to abstain from all oral hygiene procedures for 48 hours. After plaque was scored (Turesky modification of the Quigley Hein Index), the subjects brushed their teeth under supervision with the two manual toothbrushes according to a split-mouth design. In total, a cleaning time of two minutes was given for the whole procedure with an alert after every 30 seconds. Immediately after brushing, plaque was scored again by the same investigator, who was blind with respect to the toothbrush used. Conclusion: Both brushes removed a significant amount of plaque. Overall and in areas difficult to reach, the meridol® toothbrush was superior to the ADA reference brush. Int Poster J Dent Oral Med 2003, Vol 5 No 02, Poster 179 CLINICAL
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