Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,104 questions · 1,200 findings · 23 reviews · Oral medicine and oral cancer

No studies found 143 · 11.9%GRADE not reported 760 · 63.3%Very low 201 · 16.8%Low 66 · 5.5%Moderate 29 · 2.4%High 1 · 0.1%

Antidepressants (trazodone 200 mg/day) vs placebo

Adverse effects: palpitations · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether antidepressants (trazodone 200 mg/day) changes adverse effects: palpitations compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (alpha lipoic acid +/- adjunctive ingredients) vs placebo

Somnolence · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (alpha lipoic acid +/- adjunctive ingredients) changes adverse effects: drowsiness compared with placebo (very low certainty).

1 finding from 1 review

Low‐level laser therapy vs placebo

QoL · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether electromagnetic radiation (low-level laser therapy) changes change in quality of life (QoL) compared with placebo (very low certainty).

1 finding from 1 review

Herbal extracts (tea components; Chinese herbal mixture; freeze-dried black raspberry gel) vs placebo or no treatment

Improvement of histological features (not improved) · People with a diagnosis of oral leukoplakia
1 finding from 1 review
  • SoF 4, Histological changes (not improved) at 3 months: '2 studies (green tea extract capsules and freeze-dried raspberry gel) did not find evidence of benefit.' No GRADE. Effects text: Mallery raspberry RR 0.97…
    2 studies
    GRADE not reported

Dietary supplements (lycopene) vs placebo

Change in QoL - depression (surrogate marker) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (lycopene) changes change in QoL - depression (surrogate marker) compared with placebo (very low certainty).

1 finding from 1 review

Surgical removal of the lesion (surgical excision, laser surgery, cryotherapy) vs Placebo or no treatment

Outcome not reported · People with a diagnosis of oral leukoplakia

The review found no eligible studies for this question.

1 finding from 1 review
  • 'We did not identify any RCTs that compared surgical treatments with placebo or no treatment.' Three surgical RCTs were found (Chee 2013, Lopez-Jornet 2013, Schwarz 2005) but all excluded because they did not include a…
    Studies not reported
    No studies found

Benzodiazepines (topical clonazepam) vs placebo

Adverse effects: spasmophilia · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether benzodiazepines (topical clonazepam) changes adverse effects: spasmophilia compared with placebo (very low certainty).

1 finding from 1 review

Trazodone vs placebo

Change in taste · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

The review found no eligible studies for this question.

1 finding from 1 review

Anticonvulsants (gabapentin 300 mg/day) vs placebo

Adverse effects: drowsiness (gabapentin alone) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether anticonvulsants (gabapentin 300 mg/day) changes adverse effects: drowsiness (gabapentin alone) compared with placebo (very low certainty).

1 finding from 1 review

Topical treatments (topical urea 10%) vs placebo

Change in feeling of dryness · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months) · topical urea 10%
    SoF9. Change in feeling of dryness short-term (xerostomia questionnaire, 1-5, lower better): single study narratively reported no difference before or after treatment; 38 participants (1 RCT, topical urea); very low.
    1 study · 38 participants
    Very low

Antidepressants (trazodone 200 mg/day) vs placebo

Adverse effects: dry mouth · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether antidepressants (trazodone 200 mg/day) changes adverse effects: dry mouth compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (hypericum perforatum / St John's Wort) vs placebo

Relief of burning/discomfort (symptom relief; pain intensity) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months) · hypericum perforatum
    Hypericum perforatum extract (Sardella 2008, the only low-risk-of-bias study) contributes to the dietary supplements short-term symptom-relief comparison (insufficient/contradictory); no separate estimate reported.
    1 study · 43 participants
    GRADE not reported

Herbal extracts (tea components; Chinese herbal mixture; freeze-dried black raspberry gel) vs placebo or no treatment

Safety of the intervention (adverse effects) · People with a diagnosis of oral leukoplakia
1 finding from 1 review
  • Interventions for treating oral leukoplakia to prevent oral cancer 2016 · Cochrane All outcomes
    up to 3 months
    SoF 4, Safety of the intervention up to 3 months: '3 studies measured adverse effects: green tea extract capsules caused high frequency (93%) of adverse effects of varying severity in 1 study; the mixed tea study did…
    3 studies
    GRADE not reported

Paroxetine vs placebo

Relief of burning/discomfort (symptom relief; pain intensity) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review

Dietary supplements (hypericum perforatum / St John's Wort) vs placebo

QoL · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months) · hypericum perforatum
    Sardella 2008 (43 participants) evaluated QoL from patient self-reports and narratively indicated that both intervention and placebo participants were better able to cope at trial completion.
    1 study · 43 participants
    GRADE not reported

Dietary supplements (lycopene) vs placebo

QoL · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether dietary supplements (lycopene) changes change in quality of life (QoL) compared with placebo (very low certainty).

1 finding from 1 review

Benzodiazepines (topical clonazepam) vs placebo

Adverse effects: euphoric behaviour · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms

It is very uncertain whether benzodiazepines (topical clonazepam) changes adverse effects: euphoric behaviour compared with placebo (very low certainty).

1 finding from 1 review

Topical treatments (topical urea 10%) vs placebo

Change in taste · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months) · topical urea 10%
    SoF9. Change in taste short-term (Quantitative Sensory Testing gustative threshold): single study narratively reported no difference in short-term gustation thresholds; 38 participants (1 RCT, topical urea); very low.
    1 study · 38 participants
    Very low