Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,556 questions · 2,794 findings · 119 reviews · All outcomes

No studies found 489 · 17.5%GRADE not reported 1,719 · 61.5%Very low 399 · 14.3%Low 128 · 4.6%Moderate 58 · 2.1%High 1 · 0%

Low‐level laser therapy 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

It is very uncertain whether electromagnetic radiation (low-level laser therapy) changes relief of burning/discomfort (symptom relief; pain intensity) compared with placebo (very low certainty).

1 finding from 1 review

NSAIDs (ketorolac oral rinse; systemic celecoxib) vs placebo or no treatment

Improvement of histological features (not improved) · People with a diagnosis of oral leukoplakia

The review found no eligible studies for this question.

1 finding from 1 review

Hyperbaric oxygen therapy plus standard care (surgery, antibiotics, oral rinse) vs Standard care alone (surgery, antibiotics, oral rinse)

Healing of osteonecrosis - improvement ('healed' or 'improved' vs 'unchanged' or 'worse') · People with BRONJ (mean age ~66 years; most treated with bisphosphonates for cancer (multiple myeloma, breast cancer) or osteoporosis)

Hyperbaric oxygen therapy plus standard care (surgery, antibiotics,… showed no clear difference in healing of osteonecrosis - improvement ('healed' or 'improved' vs… compared with standard care alone (surgery, antibiotics, oral rinse); GRADE not reported.

5 findings from 1 review
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Low‐level laser therapy vs Placebo (or no irradiation)

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · Adolescents and adults undergoing orthodontic treatment

Low‐level laser therapy (LLLT) showed no clear difference in patient‐reported pain intensity or pain relief (VAS, NRS or… compared with placebo (or no irradiation); GRADE not reported.

5 findings from 1 review
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Antidepressants (trazodone 200 mg/day) vs placebo

Adverse event: tremor · 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: tremor compared with placebo (very low certainty).

1 finding from 1 review

Experimental chewing adjuncts (bite wafers or chewing gum) vs No chewing gum, placebo, or control (no adjunct)

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · Adolescents/teenagers undergoing orthodontic treatment

Experimental chewing adjuncts (bite wafers or chewing gum) showed no clear difference in patient‐reported pain intensity or pain relief (VAS, NRS or… compared with no chewing gum, placebo, or control (no adjunct); GRADE not reported.

5 findings from 1 review
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Benzodiazepines (systemic clonazepam 0.5 mg/day) 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

It is very uncertain whether benzodiazepines (systemic clonazepam 0.5 mg/day) changes relief of burning/discomfort (symptom relief; pain intensity) compared with placebo (very low certainty).

1 finding from 1 review

Hyperbaric oxygen therapy plus standard care (surgery, antibiotics, oral rinse) vs Standard care alone (surgery, antibiotics, oral rinse)

Healing of osteonecrosis - healed ('healed' vs 'improved', 'unchanged' or 'worse') · People with BRONJ (mean age ~66 years; most treated with bisphosphonates for cancer (multiple myeloma, breast cancer) or osteoporosis)

Hyperbaric oxygen therapy plus standard care (surgery, antibiotics,… showed no clear difference in healing of osteonecrosis - healed ('healed' vs 'improved',… compared with standard care alone (surgery, antibiotics, oral rinse); GRADE not reported.

5 findings from 1 review
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Topical treatments (benzydamine hydrochloride oral rinse) vs placebo

Adverse effects · 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) · benzydamine hydrochloride
    SoF9. Adverse effects: single study narratively reported that no adverse effects occurred from benzydamine hydrochloride oral rinse; 20 participants (1 RCT); very low.
    1 study · 20 participants
    Very low

Dietary supplements (Catuama herbal compound) vs placebo

Adverse effects: exacerbation of symptoms · 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 (Catuama herbal compound) changes adverse effects: exacerbation of symptoms compared with placebo (very low certainty).

1 finding from 1 review

Vitamin A or retinoids (systemic or topical; incl. 13-cis-retinoic acid, acitretin) vs placebo or no treatment

Clinical resolution (oral lesion not completely resolved) · 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
    4 to 12 months
    SoF 1, Clinical resolution (not completely resolved) at 4 to 12 months: 'Studies could not be combined in meta-analysis. One study evaluated topical treatment and did not find evidence of benefit; 3 studies of systemic…
    4 studies
    GRADE not reported

Dietary supplements (Catuama herbal compound) 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 (Catuama herbal compound) changes adverse effects: drowsiness compared with placebo (very low certainty).

1 finding from 1 review

Post‐treatment communication (text messaging) vs No communication (no text message)

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)
1 finding from 1 review

Vibratory stimulation (vibratory adjuncts) vs No vibration or placebo vibration

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · Adolescents and adults undergoing orthodontic treatment

Vibratory stimulation (vibratory adjuncts) showed no clear difference in patient‐reported pain intensity or pain relief (VAS, NRS or… compared with no vibration or placebo vibration; GRADE not reported.

5 findings from 1 review
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Benzodiazepines (topical clonazepam) 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 benzodiazepines (topical clonazepam) changes adverse effects: drowsiness 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

Clinical resolution (oral lesion not completely resolved) · People with a diagnosis of oral leukoplakia
1 finding from 1 review
  • SoF 4, Clinical resolution (not completely resolved) at 3 to 6 months: '3 studies (freeze-dried black raspberry gel, green tea extract capsules, mixed tea) did not find evidence of benefit.' No GRADE. Effects text:…
    4 studies
    GRADE not reported