Trial Outcomes & Findings for Bad Breath Response to Tongue Scraper and Rinses (NCT NCT00867035)

NCT ID: NCT00867035

Last Updated: 2013-05-16

Results Overview

2 investigators are trained to evaluate smell using the Rosenberg scale which measures foul smelling breath. The Rosenberg scale is validated and is scored 0-5 with 0= no bad breath, 5=worst bad breath. A score of 2 is the threshold at which bad breath is determined.

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

22 participants

Primary outcome timeframe

baseline, 1 hour, 2 hours, 4 hours, 1 week

Results posted on

2013-05-16

Participant Flow

Screening in dental clinic March 2008-March 2009. With organoleptic(OLT)score of 2 or more, or 75parts per billion(ppb) hydrogen sulfide(H2S), subjects invited to enter clinical trial. Subjects numbered in sequence from a computer-generated table of random numbers.

Exclusions: 1)Inability to return for evaluation, 2)inability to follow directions, 3) afflicted with systemic disease involving volatile sulfur compounds (VSC), 4)currently taking antibiotics, 5) using medicine in syrup form, 6) advanced periodontal disease, 7) smoker.

Participant milestones

Participant milestones
Measure
Chlorine Dioxide Rinse and Tongue Scraper
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Baseline to 1 Hour
STARTED
13
9
Baseline to 1 Hour
COMPLETED
12
8
Baseline to 1 Hour
NOT COMPLETED
1
1
Baseline to 2 Hours
STARTED
12
8
Baseline to 2 Hours
COMPLETED
12
8
Baseline to 2 Hours
NOT COMPLETED
0
0
Baseline to 4 Hours
STARTED
12
8
Baseline to 4 Hours
COMPLETED
12
8
Baseline to 4 Hours
NOT COMPLETED
0
0
Baseline to 1 Week
STARTED
12
8
Baseline to 1 Week
COMPLETED
11
8
Baseline to 1 Week
NOT COMPLETED
1
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Chlorine Dioxide Rinse and Tongue Scraper
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Baseline to 1 Hour
Withdrawal by Subject
1
1
Baseline to 1 Week
Withdrawal by Subject
1
0

Baseline Characteristics

Bad Breath Response to Tongue Scraper and Rinses

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=13 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=9 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Total
n=22 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
13 Participants
n=5 Participants
9 Participants
n=7 Participants
22 Participants
n=5 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Sex: Female, Male
Female
4 Participants
n=5 Participants
3 Participants
n=7 Participants
7 Participants
n=5 Participants
Sex: Female, Male
Male
9 Participants
n=5 Participants
6 Participants
n=7 Participants
15 Participants
n=5 Participants
Region of Enrollment
United States
13 participants
n=5 Participants
9 participants
n=7 Participants
22 participants
n=5 Participants
Rosenberg score of 2 or more
13 participants
n=5 Participants
9 participants
n=7 Participants
22 participants
n=5 Participants

PRIMARY outcome

Timeframe: baseline, 1 hour, 2 hours, 4 hours, 1 week

Population: two judges score breath odor by Rosenberg scale 0 to 5. Score of 2 is threshold for malodor. participants randomly assigned, ITT.

2 investigators are trained to evaluate smell using the Rosenberg scale which measures foul smelling breath. The Rosenberg scale is validated and is scored 0-5 with 0= no bad breath, 5=worst bad breath. A score of 2 is the threshold at which bad breath is determined.

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=13 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=9 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Percentage of Participants With Rosenberg Score at Indicated Time Points
Percentage with score of 0 or 1 at 1 hour
79 percentage of participants
100 percentage of participants
Percentage of Participants With Rosenberg Score at Indicated Time Points
Percentage with score of 0 or 1 at 2 hours
79 percentage of participants
94 percentage of participants
Percentage of Participants With Rosenberg Score at Indicated Time Points
Percentage with score of 0 or 1 at 4 hours
54 percentage of participants
81 percentage of participants
Percentage of Participants With Rosenberg Score at Indicated Time Points
Percentage with score of 0 or 1 at 1 week
64 percentage of participants
81 percentage of participants
Percentage of Participants With Rosenberg Score at Indicated Time Points
Percentage with score of 2 or 3 at Baseline
96 percentage of participants
74 percentage of participants

SECONDARY outcome

Timeframe: 1hr

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=13 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=9 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Hydrogen Sulfide (H2S) in Mouth Air at 1 Hour
10.1 parts per billion (ppb)
Standard Deviation 18.6
9.12 parts per billion (ppb)
Standard Deviation 13.9

SECONDARY outcome

Timeframe: 2hr

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=12 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Hydrogen Sulfide (H2S) in Mouth Air at 2 Hours
12.7 parts per billion (ppb)
Standard Deviation 12.9
3.88 parts per billion (ppb)
Standard Deviation 7.57

SECONDARY outcome

Timeframe: 4 hours

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=12 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Hydrogen Sulfide (H2S) in Mouth Air at 4 Hours
12.7 parts per billion (ppb)
Standard Deviation 16.1
7.0 parts per billion (ppb)
Standard Deviation 9.99

SECONDARY outcome

Timeframe: 1 week

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=11 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Hydrogen Sulfide (H2S) in Mouth Air at 1 Week
9.17 parts per billion (ppb)
Standard Deviation 13.1
20.2 parts per billion (ppb)
Standard Deviation 29.6

SECONDARY outcome

Timeframe: 1 hour

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=13 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=9 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Methyl Mercaptan (MM) in Mouth Air at 1 Hour
17.5 parts per billion (ppb)
Standard Deviation 27.0
36.0 parts per billion (ppb)
Standard Deviation 51.0

SECONDARY outcome

Timeframe: 2 hours

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=12 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Methyl Mercaptan (MM) in Mouth Air at 2 Hours
14.5 parts per billion
Standard Deviation 27.4
23.9 parts per billion
Standard Deviation 33.5

SECONDARY outcome

Timeframe: 4 hours

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=12 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Methyl Mercaptan (MM) in Mouth Air at 4 Hours
14.4 parts per billion
Standard Deviation 21.2
6.88 parts per billion
Standard Deviation 9.42

SECONDARY outcome

Timeframe: 1 week

Population: ITT

Using portable gas chromatograph

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=11 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Concentration of Methyl Mercaptan (MM) in Mouth Air at 1 Week
9.75 parts per billion
Standard Deviation 16.6
2.12 parts per billion
Standard Deviation 3.64

SECONDARY outcome

Timeframe: 1 week

Population: ITT

Total viable count(TVC) in colony forming units(CFU) on anaerobe agar

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=11 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Number of Bacteria on Tongue at 1 Week
15500000 colony forming units (CFU)
Standard Deviation 25400000
28400000 colony forming units (CFU)
Standard Deviation 65400000

SECONDARY outcome

Timeframe: 1 week

Population: ITT

Outcome measures

Outcome measures
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=11 Participants
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=8 Participants
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Percentage of Sulfide-producing Black Colonies Out of Total Viable Count(TVC) on Anaerobe Agar Containing Lead Acetate
43.1 percentage black colonies
Standard Deviation 22.8
27.8 percentage black colonies
Standard Deviation 15.6

Adverse Events

Chlorine Dioxide Rinse and Tongue Scraper

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Chlorhexidene Rinse and Tongue Scraper

Serious events: 0 serious events
Other events: 1 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Chlorine Dioxide Rinse and Tongue Scraper
n=13 participants at risk
20ml of a stabilized 0.1% chlorine dioxide mouthrinse is used after use of tongue scraper twice a day
Chlorhexidene Rinse and Tongue Scraper
n=9 participants at risk
20ml of 0.12% chlorhexidine gluconate mouthrinse is used after tongue scraping twice a day
Nervous system disorders
Effect on taste threshhold
0.00%
0/13
11.1%
1/9 • Number of events 1

Additional Information

Milton Robert Wirthlin, DDS, MS

Department of Orofacial Sciences, University of California, San Francisco

Phone: 415-476-1731

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place