Toothbrush Handles Individually Adapted for Use by Elderly Patients to Reduce Biofilm on Complete Dentures: A Pilot Study

Abstract

Introduction: Reduction of biofilm on dentures is important for maintaining denture wearers' health.

Objective: The aim of this study was to assess the effectiveness of toothbrush handles individually adapted in reducing of biofilm on dentures.

Materials and methods: Study participants were 16 residents of the condo for the elderly, denture wearers, functionally independent and without cognitive impairment. Participants were randomly divided into two groups: Group 1 (adapted toothbrush handles) and Group 2 (conventional toothbrush). Biofilm from the inner surface of the basal area of the denture was observed using 5% erythrosine. Images obtained before starting the use of toothbrushes, after 7 and 21 days were sent for computer analysis.

Results: The average amount of biofilm on the first day was considered severe in both groups. At the end of the experiment, the average biofilm coverage in Group 1 was 44.7% (13.1% reduction) and in Group 2 it was 48.6% (4.8% reduction). However, the Friedman analysis of variance test showed that the reduction was statistically significant (p< 0.05) only in Group 1, demonstrating the effectiveness of the adapted brushes.

Conclusion: The findings of this pilot study indicated that for the reduction of biofilm on dentures the adapted toothbrush handles were superior to the conventional type.

Keywords: Assistive technology; Denture cleanser; Geriatric; Preventive dentistry; Prosthesis.

Figures

[Table/Fig-1]:

Molding of patient’s hand with condensation silicone

[Table/Fig-2]:

Finalized toothbrush adaptation device

[Table/Fig-3]:

Software used for biofilm quantification, result expressed in % of area covered by biofilm in relation to total area of the internal surface of the denture base

[Table/Fig-4]:

Mean values of biofilm quantification in patients of Group 1 (adapted toothbrushes handles) at the time intervals: initial, after 7 and 21 days (%)

[Table/Fig-5]:

Mean values of biofilm quantification in patients of Group 2 (without adapted device) at the time intervals: initial, after 7 and 21 days (%)