Randomized cross over trial on an effect of quercus salicina extract chewing gum on genuine halitosis.

Randomized cross over trial on an effect of quercus salicina extract chewing gum on genuine halitosis. - Effect of quercus salicina extract gum on physiological halitosis.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000002713

Enrollment

Registered

2009-12-01

Start date

2009-12-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

genuine halitosis

Interventions

Quercus salicina extract chewing gum group: Subjects chew one piece of chewing gum (3g/1piece) for ten minutes. Placebo gum group: Subjects chew one piece of chewing gum (3g/1piece) for ten minutes.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Genuine halitosis . Organoreptic score more than 2 and total volatile sulfur compounds more than 0.15 ppm

Exclusion criteria

Exclusion criteria: Subjects without genuine halitosis A history of systemic disease Antibiotic treatment or periodontal treatment within the previous 3 months

Design outcomes

Primary

Measure	Time frame
measurement of volatile sulfur compounds in breath	—

Countries

Japan

Contacts

Public ContactMuneo Tanaka

Osaka University Dental Hospital Department of Preventive Dentistry

06-6879-2922

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026