Antibacterial effect of a disinfectant spray for sports mouthguards on Streptococcus sobrinus

Gen Tanabe; Hiroshi Churei; Yasuo Takeuchi; Kairi Hayashi; Aki Kanasaki; Yuriko Yoshida; Jun Toma; Yosiaki Araie; Toshiaki Ueno

Antibacterial effect of a disinfectant spray for sports mouthguards on Streptococcus sobrinus

Dent Res J (Isfahan). 2021 Jul 19:18:59. eCollection 2021.

Authors

Gen Tanabe¹, Hiroshi Churei¹, Yasuo Takeuchi², Kairi Hayashi¹, Aki Kanasaki¹, Yuriko Yoshida¹, Jun Toma³, Yosiaki Araie⁴, Toshiaki Ueno¹

Affiliations

¹ Department of Sports Medicine/Dentistry, Tokyo Medical and Dental University, Tokyo, Japan.
² Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
³ AGSA JAPAN CO., LTD 1-2-34 Tamatsukuri, Chuo-Ku, Japan.
⁴ LITEC., Ltd 6-33 Minamibori-cho, Tennoji-Ku, Osaka, Japan.

PMID: 34497694
PMCID: PMC8404567

Abstract

Background: Mouthguard (MG) disinfectant sprays are available for maintaining MG hygiene. The effect of these sprays against Streptococcus sobrinus is still unknown. The purpose of this study was to evaluate the antibacterial effect of an MG disinfectant spray against S. sobrinus using the modified ISO 22196 standard.

Materials and methods: In this in vitro study, we used the following treatment groups for antibacterial testing: MG spray-1 (left in spray for 30 s), MG spray-2 (60 s), and control (n = 4). All analyses were performed at a statistically significant level (P = 0.05) using JMP^® 14.

Results: The log colony-forming units of the MG spray-2 group were significantly lower than those of the other groups. The antibacterial activity of MG spray-2 against S. sobrinus was >2.1.

Conclusion: We confirmed the antibacterial effect of the MG spray against S. sobrinus, and it was influenced by the treatment duration, with the optimum effect at a longer duration.

Keywords: Antibacterial agents; Streptococcus sobrinus; mouth protectors.