NCT05133557

Brief Summary

The short-term effects of chewing gum containing xylitol and/or blackberry extract on oral microbiota was studied. Fifty healthy adults participated in a randomized, placebo-controlled, cross-over design study.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
50

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Oct 2012

Typical duration for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2012

Completed
3.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 30, 2015

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 30, 2015

Completed
6 years until next milestone

First Submitted

Initial submission to the registry

November 12, 2021

Completed
12 days until next milestone

First Posted

Study publicly available on registry

November 24, 2021

Completed
Last Updated

November 24, 2021

Status Verified

November 1, 2021

Enrollment Period

3.2 years

First QC Date

November 12, 2021

Last Update Submit

November 12, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Total salivary bacteria count

    Comparative difference in the total salivary bacteria count after chewing 4 pieces of gum

    7 hours

Secondary Outcomes (1)

  • Bacteria count on enamel

    7 hours

Study Arms (2)

Placebo

PLACEBO COMPARATOR

Half the participants receiving placebo gum (2 gram; 1 gram xylitol) first,

Other: Chewing gum containing xylitol and blackberry extract (BBE)

BBE gum

EXPERIMENTAL

Half receiving first the BBE gum (2 gram; 1 gram xylitol and 100 mg BBE) that were identical in size, shape, color and flavor. After 1 week the groups cross-over and chewed the other gum.

Other: Chewing gum containing xylitol and blackberry extract (BBE)

Interventions

On the day of gum chewing, four pieces of gum were provided per the assigned group, and each volunteer was requested to chew the gum four times daily (i.e., at 9 am, 11 am, 1 pm and 3 pm). Each gum chewing interval was for 20 minutes.

BBE gumPlacebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • systemically healthy, had 20 or more natural erupted teeth, and had gingivitis (bleeding on probing \[BOP\] in more than 15% of sites, less than 25% sites with \> 4 mm probing pocket depths (PPD), and less than 5% sites with 5 mm depth PPD, who were a non-smoker, willing to participate, and verbally understood and signed an informed consent prior to enrollment

You may not qualify if:

  • unable or unwilling to provide informed consent or follow study protocol, current smoker, systemic condition including diabetes mellitus, liver disease, kidney disease, autoimmune disease, and any cardiovascular condition that would require premedication prior to dental treatment, use of systemic antibiotics within three months of study entry, use of over the counter or prescription medications known to have anti-inflammatory/immunosuppressant activities (e.g., nonsteroidal anti-inflammatory drugs (\>14 day use in past 3 months), steroids, vitamin supplements, statin drugs, topical chlorhexidine on a daily basis, pregnancy as diagnosed by administered of a pregnancy test, cancer or cancer therapy within the last year, immunosuppression (e.g., organ transplant), orthodontic therapy (current or within the last 6 months), inability to communicate verbally or in writing, clinically detectable oral mucosal inflammatory condition (e.g., aphthous, lichen planus, leukoplakia, oral cancer), or febrile illness, persistent cough or current infectious condition (e.g., influenza, hepatitis), or any PPD of 6 mm or greater at the time of the baseline periodontal examination.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (4)

  • Cavanagh HM, Hipwell M, Wilkinson JM. Antibacterial activity of berry fruits used for culinary purposes. J Med Food. 2003 Spring;6(1):57-61. doi: 10.1089/109662003765184750.

    PMID: 12804021BACKGROUND
  • Danaher RJ, Wang C, Dai J, Mumper RJ, Miller CS. Antiviral effects of blackberry extract against herpes simplex virus type 1. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011 Sep;112(3):e31-5. doi: 10.1016/j.tripleo.2011.04.007.

    PMID: 21827957BACKGROUND
  • Dai J, Patel JD, Mumper RJ. Characterization of blackberry extract and its antiproliferative and anti-inflammatory properties. J Med Food. 2007 Jun;10(2):258-65. doi: 10.1089/jmf.2006.238.

    PMID: 17651061BACKGROUND
  • Takeuchi K, Asakawa M, Hashiba T, Takeshita T, Saeki Y, Yamashita Y. Effects of xylitol-containing chewing gum on the oral microbiota. J Oral Sci. 2018 Dec 27;60(4):588-594. doi: 10.2334/josnusd.17-0446. Epub 2018 Nov 15.

    PMID: 30429438BACKGROUND

Related Links

MeSH Terms

Conditions

Dental Caries

Condition Hierarchy (Ancestors)

Tooth DemineralizationTooth DiseasesStomatognathic Diseases

Study Officials

  • Craig S Miller, DMD, MS

    University of Kentucky

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR
Masking Details
Each volunteer was allocated xylitol-containing placebo gum or xylitol-containing BBE gum according to a predetermined randomization scheme. To ensure investigator blinding, test products were dispensed through other staff members who kept the assignment codes in sealed envelopes. Randomization resulted in half the participants receiving placebo gum (2 gram; 1 gram xylitol) first, and half receiving first the BBE gum (2 gram; 1 gram xylitol and 100 mg BBE) that were identical in size, shape, color and flavor.
Purpose
PREVENTION
Intervention Model
CROSSOVER
Model Details: This study was a randomized, crossover-washout design.
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

November 12, 2021

First Posted

November 24, 2021

Study Start

October 1, 2012

Primary Completion

November 30, 2015

Study Completion

November 30, 2015

Last Updated

November 24, 2021

Record last verified: 2021-11

Data Sharing

IPD Sharing
Will not share