Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,348 questions · 1,514 findings · 111 reviews · All outcomes

No studies found 287 · 19%GRADE not reported 823 · 54.4%Very low 243 · 16.1%Low 104 · 6.9%Moderate 49 · 3.2%High 8 · 0.5%

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Reduction of upper airway resistance syndrome (UARS) and body-weight/BMI development (polysomnography) · Children with obstructive sleep apnoea (aged 15 years or younger)

The review found no eligible studies for this question.

1 finding from 1 review

Bethanechol 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

The review found no eligible studies for this question.

1 finding from 1 review

Antidepressants (trazodone 200 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 antidepressants (trazodone 200 mg/day) changes relief of burning/discomfort (symptom relief; pain intensity) compared with placebo (very low certainty).

1 finding from 1 review

Perioperative infraorbital nerve block vs Placebo (sham/placebo device)

Pain measured by valid instruments (mean postoperative pain score) · Children up to 13 years of age, undergoing cleft lip repair surgery

It is very uncertain whether perioperative infraorbital nerve block changes pain measured by valid instruments (mean postoperative pain score) compared with placebo (sham block) (very low certainty).

1 finding from 1 review

Fluoride mouthrinse (any fluoride agent, concentration, volume, frequency or technique; swished and expectorated, not swallowed) vs placebo or no treatment

Dental caries: dmfs increment (primary teeth) · Children and adolescents aged 16 years or less

The review found no eligible studies for this question.

1 finding from 1 review

Physical barriers (tongue protector) vs placebo

Adverse effects (narrative) · 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)
    SoF7. Adverse effects: single study narratively reported that no adverse events occurred from the use of tongue protectors; 50 participants (1 RCT); low.
    1 study · 50 participants
    Low

Benzodiazepines (systemic clordemetildiazepam 1 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
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months) · clordemetildiazepam
    Bogetto 1999 (clordemetildiazepam) included in the benzodiazepine comparison but data not presented (79% placebo-arm attrition).
    1 study
    GRADE not reported

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Daytime symptom: morning headache (Brouillette questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes daytime symptom: morning headache (Brouillette questionnaire) compared with placebo or no treatment (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

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

Vitamin A or retinoids (systemic or topical; incl. 13-cis-retinoic… probably leads to lower improvement of histological features (not improved) compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Systemic beta carotene or carotenoids (incl. lycopene) 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
    5 to 12 months
    SoF 2, Safety of the intervention at 5 to 12 months: 'Systemic beta carotene did not cause any adverse effects in 1 study supplementing 10 mg/d (Nagao), and caused adverse effects of varying severity in 9% of…
    3 studies
    GRADE not reported

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

Dose/intensity and frequency of pain relief needed (analgesic/rescue medication use) · Adolescents and adults undergoing orthodontic treatment

Vibratory stimulation (vibratory adjuncts) led to lower dose/intensity and frequency of pain relief needed (analgesic/rescue… compared with no vibration or placebo vibration; GRADE not reported.

1 finding from 1 review

Bethanechol vs placebo

QoL · 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

Antidepressants (trazodone 200 mg/day) vs placebo

Abdominal pain · 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: abdominal pains compared with placebo (very low certainty).

1 finding from 1 review

Dietary supplements (Catuama herbal compound) 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) · Catuama
    'Catuama' herbal compound (Spanemberg 2012) contributes to the dietary supplements short-term symptom-relief comparison (insufficient/contradictory); no separate estimate reported.
    1 study · 72 participants
    GRADE not reported

Fluoride mouthrinse (any fluoride agent, concentration, volume, frequency or technique; swished and expectorated, not swallowed) vs placebo or no treatment

Proportion developing new caries · Children and adolescents aged 16 years or less

Fluoride mouthrinse (any fluoride agent, concentration, volume,… showed no clear difference in proportion of children developing one or more new caries compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Physical barriers (tongue protector + reinforced self-control instruction) 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 physical barriers (tongue protector + reinforced self-control… changes relief of burning/discomfort (symptom relief; pain intensity) compared with placebo (very low certainty).

1 finding from 1 review