Studies on bacterial contamination of chlorhexidine coated filaments of the toothbrush

Nihon Shishubyo Gakkai kaishi
N YokosukaT Iwai

Abstract

The purpose of the present investigation was to determine bacterial contamination of chlorhexidine coated and uncoated (normal) nylon filaments of toothbrushes. Ten healthy subjects were employed in this study and the test toothbrush of four lines and thirty-eight tufts were used twice a day. Test periods were 1, 8, and 20 days for each filaments of toothbrush and after they brushed the used toothbrush was kept at the constant condition (20 degrees C, 65% RH). After each test period, those toothbrushes were immediately collected and kept at the same condition for drying. After 0, 3, 6, 9, and 24 hours of drying, two tufts of filaments were pulled out from the toothbrush and cutted into two parts (end- and root-side of tufts) by sterile scissors. Each cutted part of filaments was washed with PBS and the aliquots was incubated on Brucella blood agar plate at 37 degrees C for 48 hours. The number of bacteria attached to filaments was enumerated. The results were as follows: 1. The number of bacteria attached to both end- and root-sides of chlorhexidine coated filaments decreased with the time of drying. 2. At the root-side of the normal filaments, the number of contaminated bacteria increased with the test periods. 3. The isolated...Continue Reading

Citations

Nov 23, 2006·Journal of Dentistry·M EfstratiouV Panis
Mar 2, 2011·International Journal of Dental Hygiene·D M P SpolidorioJ R Pires
May 28, 2011·Microscopy Research and Technique·Cássio do NascimentoVinícius Pedrazzi
Aug 20, 2015·Journal of Family Medicine and Primary Care·Rashmi NaikB R Spoorthi
Apr 25, 2003·Journal of Periodontology·Marc QuirynenDaniel van Steenberghe

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