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%

Aciclovir (oral or intravenous) for treatment vs placebo

Adverse effects · Patients being treated for cancer with established oral HSV infection (bone marrow transplant recipients / immunocompromised)
1 finding from 1 review

Aciclovir (oral or intravenous) for treatment vs placebo

Cost of oral care · Patients being treated for cancer with established oral HSV infection (bone marrow transplant recipients / immunocompromised)

The review found no eligible studies for this question.

1 finding from 1 review

Transforming growth factor-beta(2) (TGF-beta2) vs placebo

Oral mucositis (any severity) · Adults receiving chemotherapy alone for colorectal cancer

Transforming growth factor-beta(2) (TGF-beta2) showed no clear difference in oral mucositis (any severity) compared with placebo; GRADE not reported.

1 finding from 1 review

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) vs placebo

Average duration of RAS episode (days) · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) led to lower average duration of RAS episode (days) compared with placebo; GRADE not reported.

1 finding from 1 review

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) vs placebo

Pain score · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) led to lower pain score compared with placebo; GRADE not reported.

1 finding from 1 review

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) vs placebo

'No ulcer' status during last 2 months of treatment · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) led to higher 'No ulcer' status during last 2 months of treatment compared with placebo; GRADE not reported.

1 finding from 1 review

Pentoxifylline vs placebo

Pain, number of ulcers, ulcer-free days and ulcer size · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes
    60 days (plus 60-day follow-up)
    A single trial at high risk of bias compared pentoxifylline 400 mg three times daily (n=14) with placebo (n=12). No statistically significant differences were reported for pain, number of ulcers and ulcer-free days at…
    1 study · 26 participants
    GRADE not reported

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) vs placebo

Frequency of outbreaks per month · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Vitamin B12 (sublingual, 1000 mcg daily for 6 months) led to lower frequency of outbreaks per month compared with placebo; GRADE not reported.

1 finding from 1 review

Pentoxifylline vs placebo

Adverse effects · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • Systemic interventions for recurrent aphthous stomatitis (mouth ulcers) 2012 · Cochrane All outcomes
    60 days (plus 60-day follow-up)
    Patients receiving pentoxifylline reported more adverse events than those in the placebo group but this was not statistically significant (69% reported adverse effects: dizziness, headaches, stomach upset, increased…
    1 study · 26 participants
    GRADE not reported

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

Beta-glucan (1.3/1.6 beta-glucan 10 mg twice daily for 20 days) vs placebo

Ulcer severity score (USS) · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Beta-glucan (1.3/1.6 beta-glucan 10 mg twice daily for 20 days) led to lower ulcer severity score (USS) compared with placebo; GRADE not reported.

1 finding from 1 review

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) vs placebo

Mean VAS pain per day · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) showed no clear difference in mean VAS pain per day compared with placebo; GRADE not reported.

1 finding from 1 review

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) vs placebo

Total number of new ulcers over 90 days · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) led to lower total number of new ulcers over 90 days compared with placebo; GRADE not reported.

1 finding from 1 review

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) vs placebo

Number of ulcers at end of 90-day treatment · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) showed no clear difference in number of ulcers at end of 90-day treatment compared with placebo; GRADE not reported.

1 finding from 1 review

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) vs placebo

Average number of new lesions per week · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…

Subantimicrobial dose doxycycline (20 mg twice daily for 90 days) led to lower number of new lesions per day compared with placebo; GRADE not reported.

1 finding from 1 review

Clofazimine (100 mg daily for 30 days, then 100 mg every other day) vs placebo

Complete remission (no further aphthous episodes to 6 months) · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review
  • One trial at high risk of bias compared clofazimine (n=23) with placebo (n=20). The number of individuals in the clofazimine group who had no further aphthous episodes from beginning treatment until completion at 6…
    1 study · 43 participants
    GRADE not reported

Clofazimine (100 mg daily for 30 days, then 100 mg every other day) vs placebo

Adverse effects · Participants with a previous or current history of recurrent aphthous stomatitis (RAS), diagnosed on history and clinical examination;…
1 finding from 1 review