- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01754740
The Role of Xerostomia in Burning Mouth Syndrome: Case - Control Study (BMS)
Objectives: to evaluate xerostomia and salivary flow in patients with burning mouth syndrome (BMS) treated with amitriptyline before and after the use of antixerostomic topical medication.
Methods: In this case-control double-blinded study, we enrolled 38 patients with BMS diagnosed according to the (IASP). The subjects were randomly divided into two groups: Study Group: 19 patients whom received topical medication of urea 10% and Control Group: 19 patients whom received placebo to apply at the oral cavity 3-4 times per day, during three months. The patients were evaluated before and after the above treatment. Finally, data were statistically analyzed.
It is know that BMS is eventually associated to reduced salivary flow (Cho et al.,2010; Kho et al., 2010; Marino et al., 2010) and to abnormal salivary composition (increasing concentrations of K+, Na+, Cl-, Ca+2, IgA, amylase) (Patton et al., 2007). Even in the absence of hyposalivation, patients may complain of xerostomia and dry mouth (Cho et al.,2010; Kho et al., 2010; Marino et al., 2010; Thomson, 2005). These patients also have several sensory losses even in taste and smell function, recently described (Siqueira et al., 2006a; Siqueira et al., 2006b; Siviero et al., 2011).
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Materials and Methods In this case-control double-blinded study, we enrolled 38 patients with BMS diagnosed according to the International Association for the Study of Pain (IASP) (17), that had been followed at the Craniofacial Pain Clinic of Hospital das Clinicas, School of Medicine of the University of Sao Paulo. All subjects were informed about the purposes of the study, and all signed the informed consent. The protocol had been approved by the local Ethics Committee. No patient had hyposalivation at the moment of diagnosis by the quantitative evaluation. All patients had been treated with 25mg-50mg of amitriptyline within the last three months. They underwent laboratory tests and careful exam to exclude other causes of burning mouth (10).
The exclusion criteria were other facial pain syndromes, other causes for abnormal salivation, other neuropathies or primary diseases associated to burning mouth, inability to answer the questions and / or tests
The subjects were randomly divided into two groups:
- Study Group: 19 patients received topical medication of urea 10% to be applied at the oral cavity 3-4 times per day, during three months.
- Control Group: 19 patients received placebo (5% sodium carboxymethylcellulose, 0.15% methyl paraben and 10% glycerol in distilled water qsp 100g) to be applied at the oral cavity 3-4 times per day, during three months.
The patients were evaluated before and after the above treatment with the following instruments:
- EDOF-HC protocol (Orofacial Pain Clinic - Hospital das Clinicas): a standardized orofacial pain questionnaire to detail: 1) chief complaint, 2) general pain characteristics (location, quality, duration, pain relief, pain triggering), 3) headache and/or body pain complaints, and 4) patient's medical history and co-morbidities (18,19);
- Xerostomia questionnaire (20);
Quantitative sensory testing. All subjects underwent a standardized protocol of quantitative sensory testing (QST) (21) which consists of twelve tests grouped as follows:
- salivary flow; gustative and olfactory thresholds;
- thermal detection thresholds for cold and warm sensations;
- mechanical detection thresholds for touch, vibration and electrical perception;
- mechanical pain sensitivity including superficial and deep pain thresholds;
- electric pain threshold at the teeth.
- corneal reflex.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Sao Paulo, Brazil, 05403-010
- Hospital das Clinicas, Medical Scholl, University of Sao Paulo
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- All patients had been treated with 25mg-50mg of amitriptyline within the last three months. They underwent laboratory tests and careful exam to exclude other causes of burning mouth
Exclusion Criteria:
- other facial pain syndromes, other causes for abnormal salivation, other neuropathies or primary diseases associated to burning mouth, inability to answer the questions and / or tests
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: DOUBLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Study Group
19 patients whom received topical medication of urea 10%
|
The subjects were randomly divided into two groups: 1. Study Group: 19 patients received topical medication of urea 10% to be applied at the oral cavity 3-4 times per day, during three months.
Other Names:
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PLACEBO_COMPARATOR: Control Group
19 patients whom received placebo
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Control Group: 19 patients received placebo (5% sodium carboxymethylcellulose, 0.15% methyl paraben and 10% glycerol in distilled water qsp 100g) to be applied at the oral cavity 3-4 times per day, during three months.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The role of Xerostomia in Burning Mouth Syndrome: case - control study
Time Frame: three years
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three years
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Collaborators and Investigators
Investigators
- Study Director: Silvia RDT Siqueira, Professor, University of Sao Paulo
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 12345 (Danish Center for Healthcare Improvements)
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