Authors: Nelson-Filho, Paulo; Faria, Gisele; da Silva, Raquel Assed Bezerra; Rossi, Marcos Antonio; Ito, Izabel Yoko

Source: Journal of Dentistry for Children, Volume 73, Number 3, September-December 2006 , pp. 152-158(7)

Publisher: American Academy of Pediatric Dentistry

Abstract:

Purpose: The purpose of this study was to evaluate: (1) in vivo the contamination by mutans streptococci (MS) of toothbrushes after use on 52 children (24-48 months old) by a single dentist; (2) in vivo the efficacy of 3 solutions (Periogard, Brushtox, and a Cosmocil CQ^â and Myacide pharma BP^â-based experimental solution) in the disinfection of these toothbrushes through a randomized clinical trial; and (3) in vitro the antimicrobial activity of the solutions by the agar diffusion test using 15 microbial strains.

Methods: In the in vivo trial, children were randomly assigned to 1 of 4 groups (N=13) and a 4-stage changeover system was used with a 1-week interval between each stage. Solutions were used by a different group of children in each stage. Children were submitted to a 1-minute brushing (without toothpaste) performed by a single professional, followed by random spraying of the test solutions and microbiological analysis.

Results: Brushtox, Periogard, and the experimental solution reduced/prevented the formation of MS colonies/biofilms on the toothbrush bristles compared to the control (sterile tap water; P<.001). Periogard and the experimental solution showed significantly greater reduction of colonies/biofilms compared to Brushtox (P<.01). In the in vitro experiment, Periogard exhibited the greatest inhibition halo average, followed by the experimental solution, Brushtox, and sterile tap water (P<.05).

Conclusions: After a single brushing, severe contamination by mutans streptococci colonies/biofilms was observed on all toothbrushes sprayed with sterile tap water (control). Although Brushtox presented better results than sterile tap water, Periogard and the experimental solution showed greater efficacy against formation of MS colonies/biofilms on the toothbrush bristles and exhibited larger microbial growth inhibition halos.

Keywords: TOOTHBRUSHES; MUTANS STREPTOCOCCI; CHLORHEXIDINE

Document Type: Research article

Publication date: 2006-09-01

More about this publication?

• Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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