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Effectiveness of an Ultrasonic Denture Hygiene Intervention Program Among Community-dwelling Elders

The University of Hong Kong (HKU) logo

The University of Hong Kong (HKU)

Status and phase

Completed
Phase 4

Conditions

Removable Partial Denture
Denture
Cetylpyridinium Chloride
Denture Cleansers

Treatments

Device: Ultrasonic cleaning
Other: Conventional denture hygiene

Study type

Interventional

Funder types

Other

Identifiers

NCT03522272
UW16-266

Details and patient eligibility

About

Objectives: The objective of this study was to assess prospectively the effectiveness of ultrasonic denture hygiene interventions in improving denture cleanliness among community-dwelling elders. Methods: A randomized clinical trial was conducted among community-dwelling elders, in which a total of 66 subjects who received upper metal framework removable partial dentures in the past five years were recruited randomly from a computerized database. They were randomly allocated into three denture hygiene intervention groups: group 1 (mechanical cleaning with a toothbrush and ultrasonic cleaning with cetylpyridinium chloride mouthrinse), group 2 (mechanical cleaning with a toothbrush and ultrasonic cleaning with distilled water) and control (mechanical cleaning with a toothbrush only). Denture cleanliness was assessed at baseline and one month review using: i) Denture Cleanliness Index (DCI) scores; ii) plaque coverage percentage; and (iii) microbiological tests. Results: There were significantly greater reductions in mean DCI scores and mean percentage of plaque coverage area in group 1 and group 2 compared to the control group for both CoCr and acrylic fitting surfaces (p<0.001). Group 1 had significant reductions in the viable counts of bacteria (CoCr and acrylic) and yeast (CoCr only) (p<0.05), while only significant reductions in bacterial viable counts (CoCr and acrylic) (p<0.05) were documented in Group 2. No significant differences were detected between groups 1 and 2 with regards to all clinical and microbiological outcomes. When comparing these parameters for CoCr and acrylic surfaces, no significant differences were observed following the intervention period. Conclusions: The ultrasonic cleaner was significantly more effective than the control in the reduction of biofilm coverage on metal framework removable partial dentures during the one month intervention period. The adjunctive use of cetylpyridinium chloride with ultrasonic cleaning did not yield improved outcomes compared to water.

Enrollment

66 patients

Sex

All

Ages

65+ years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • previously provided with cobalt chromium metal framework removable partial dentures (RPDs) within the past five years at Prince Philip Dental Hospital

Exclusion criteria

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

66 participants in 3 patient groups

Ultrasonic cleaning with cetylpyridinium chloride
Experimental group
Description:
Mechanical cleaning of the RPD with a soft toothbrush and liquid detergent, and ultrasonic cleaning (frequency 42kHz) (for 7 minutes 30 seconds) of the denture with 0.07% cetylpyridinium chloride mouthrinse
Treatment:
Device: Ultrasonic cleaning
Device: Ultrasonic cleaning
Ultrasonic cleaning with water
Active Comparator group
Description:
Mechanical cleaning of the RPD with a soft toothbrush and liquid detergent, and ultrasonic cleaning (frequency 42kHz) (for 7 minutes 30 seconds) of the denture with distilled water
Treatment:
Device: Ultrasonic cleaning
Device: Ultrasonic cleaning
Conventional denture hygiene
Active Comparator group
Description:
Mechanical cleaning of the RPD with a soft toothbrush and liquid detergent (Control group)
Treatment:
Other: Conventional denture hygiene

Trial contacts and locations

0

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Data sourced from clinicaltrials.gov

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