Autores: Lafaurie GI, Zaror C, Díaz-Báez D, Castillo DM, De Ávila J, Trujillo TG, Calderón-Mendoza J
Abstract
Background:
Hypochlorous acid (HOCl) is a non-antibiotic antimicrobial substance with significant effects on pathogenic oral micro-organisms. The effects of HOCl as an antiplaque agent have not been studied.
Objective:
The aim of this study was to evaluate the substantivity of HOCl mouthwashes compared with chlorhexidine (CHX) rinses and a placebo.
Materials and methods:
A double-blind randomized controlled trial with 75 participants was conducted. Participants were divided into five groups using block randomization: 0.025% HOCl, 0.05% HOCl, 0.12% CHX, 0.2% CHX, and sterile water as a placebo. Participants were instructed to use each rinse solution for 30 seconds after dental prophylaxis. Samples of saliva were taken at baseline and after 30 seconds, 1, 3, 5 and 7 hours to assess substantivity, and bacterial viability was established by the fluorescence method. Visible plaque in all participants was assessed with the Turesky index at baseline and at 7 hours, and adverse events were also assessed.
Results:
HOCl led to a 33% reduction in bacterial counts in the saliva after 30 seconds compared with a 58% reduction by CHX. HOCl has no substantivity, and bacterial counts returned to baseline after 1 hour. Placebo treatment led to the highest plaque count after 7 hours compared with the CHX and HOCl groups, although the differences were not significant. HOCl rinsing induced the highest percentages of unpleasant taste and dryness sensations.
Conclusions:
HOCl rinses have an initial effect on bacterial viability in saliva but have no substantivity. Other mechanisms may explain its antiplaque effect.
© 2018 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
Fuente:
Int J Dent Hyg. 2018 Nov;16(4):527-534. doi: 10.1111/idh.12342. Epub 2018 Apr 2.
PMID: 29608039 DOI: 10.1111/idh.12342
Keywords:
Antiplaque agents; chlorhexidine; hypochlorous acid; substantivity.
