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The Efficacy of N-acetyl-cysteine in the Treatment of Burning Mouth Syndrome

The Efficacy of N-acetyl-cysteine in the Treatment of Burning Mouth Syndrome

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05309070
Enrollment
80
Registered
2022-04-04
Start date
2022-05-01
Completion date
2025-02-28
Last updated
2025-05-14

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

Conditions

Burning Mouth Syndrome

Brief summary

The purpose of this study was to examine the efficacy of N-acetyl cysteine in the treatment of burning mouth syndrome. A control group of patients with burning mouth syndrome will receive a placebo. The effect of the therapy will be monitored with the help of the visual-analogue scale (VAS) and the oral health-related quality of life questionnaire (OHIP-14).

Detailed description

The research will include patients who come to the Department of Oral Medicine at the Faculty of Dentistry in Zagreb, and who have been diagnosed with burning mouth syndrome. It is planned to gather a total of 60 patients, 30 patients in the treatment group and 30 in the placebo group. The purpose and protocol of the research will be explained to the patients. If they are willing to participate, they will sign an informed consent previously approved by the Ethics Committee of the Faculty of Dentistry. They will fill in the OHIP-14 questionnaire and the VAS scale, grading from 0-10, where 0 indicates a condition without symptoms, and 10 the strongest possible intensity of symptoms. They will be randomly assigned to a therapeutic or placebo group and will receive the medicine in an unmarked box. The drug will be taken for two months at a dose of 1200 mg per day. After that, they will come for a check-up and re-complete OHIP-14 and record the intensity of symptoms according to the VAS scale.

Interventions

DIETARY_SUPPLEMENTN-acetyl cysteine

Study group will receive N-acetyl cysteine in unmarked boxes, in a daily dose of 1200 mg during two months

OTHERplacebo

Control group will receive a placebo, in unmarked boxes, during two months

Sponsors

University of Zagreb
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

double-blind randomized controlled trial

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* clinical diagnosis of burning mouth syndrome

Exclusion criteria

* pregnancy, breastfeeding or pregnancy planning * anamnestic data about active gastric or duodenal ulcer * decreased levels of serum iron or B vitamins

Design outcomes

Primary

MeasureTime frameDescription
Change in quality of lifeup to 8 weeksmeasured with OHIP-14 (Oral Health-Related Quality of Life questionnaire); the answer options with their respective values were as follows: 0 = never, 1 = rarely, 2 = sometimes, 3 = repeatedly, 4 = always, with a maximum score of 56. The higher the score, the worse quality of life.

Secondary

MeasureTime frameDescription
Change in subjective symptoms of burning mouthup to 8 weeksmeasured with VAS scale (visual analogue scale) grading from 0 to 10 (0 = without symptoms, 10 = worst possible symptoms)

Countries

Croatia

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026