Findings

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Evidence found and GRADE certainty

550 questions · 606 findings · 25 reviews · Oral medicine and oral cancer

No studies found 62 · 10.2%GRADE not reported 428 · 70.6%Very low 69 · 11.4%Low 30 · 5%Moderate 16 · 2.6%High 1 · 0.2%

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

Vitamin A or retinoids (systemic or topical; incl. 13-cis-retinoic acid, acitretin) 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
    4 to 12 months
    SoF 1, Safety of the intervention at 4 to 12 months: '3 studies (1 each evaluating topical acitretin, topical 13-cis-retinoic acid, 200,000 IU per week of vitamin A) found no adverse effects. Systemic 13-cis-retinoic…
    4 studies
    GRADE not reported

Bowman-Birk inhibitor 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 6 months
    SoF 6, Safety of the intervention up to 6 months: 'Trial authors reported that there were no significant adverse effects. 33 participants in the intervention group reported 75 adverse effects. 25 participants in the…
    1 study
    GRADE not reported

Systemic beta carotene or carotenoids (incl. lycopene) 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
    5 to 12 months
    SoF 2, Clinical resolution (not completely resolved) at 5 to 12 months: 'The 3 studies could not be combined in meta-analysis. 2 found benefit for systemic beta carotene, and 1 did not.' No GRADE rating. Effects text…
    3 studies
    GRADE not reported

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Oral mucositis (severe) · All patients with cancer who are receiving treatment

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… probably leads to lower oral mucositis (severe) compared with control (no treatment or standard/usual oral care, e.g. saline rinse) (moderate certainty).

3 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs High-dose leucovorin rinse

Oral mucositis (severe) · Patients with osteosarcoma (bone cancer) receiving high-dose methotrexate, vincristine and leucovorin
1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Number of days of treatment with opioid analgesics · All patients with cancer who are receiving treatment

The review found no eligible studies for this question.

2 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Quality of life · All patients with cancer who are receiving treatment
2 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Adverse events · All patients with cancer who are receiving treatment
2 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs Low-dose leucovorin rinse

Oral mucositis (severe) · Patients with osteosarcoma (bone cancer) receiving high-dose methotrexate, vincristine and leucovorin
1 finding from 1 review

Cryotherapy (ice chips) 30 minutes vs Cryotherapy (ice chips) 60 minutes

Oral mucositis (moderate to severe) · Adults with solid cancers receiving fluorouracil (5FU) and leucovorin

It is very uncertain whether oral cryotherapy for 30 minutes changes oral mucositis (moderate to severe) compared with oral cryotherapy for 60 minutes (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Oral mucositis (mean severity on WHO 0 to 4 scale) · All patients with cancer who are receiving treatment

It is very uncertain whether oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… changes oral mucositis (mean severity on WHO 0 to 4 scale) compared with control (no treatment or standard/usual oral care, e.g. saline rinse) (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Oral pain · All patients with cancer who are receiving treatment
3 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Oral mucositis (any severity) · All patients with cancer who are receiving treatment

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… showed no clear difference in oral mucositis (any severity) compared with control (no treatment or standard/usual oral care, e.g. saline rinse) (low certainty).

3 findings from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs no intervention or control intervention (control)

Number of days in hospital (duration of hospitalisation) · All patients with cancer who are receiving treatment

The review found no eligible studies for this question.

2 findings from 1 review

Cryotherapy (ice chips) 30 minutes vs Cryotherapy (ice chips) 60 minutes

Oral mucositis (severe) · Adults with solid cancers receiving fluorouracil (5FU) and leucovorin

It is very uncertain whether oral cryotherapy for 30 minutes changes oral mucositis (severe) compared with oral cryotherapy for 60 minutes (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs Chlorhexidine rinse

Oral mucositis (any severity) · Adults with solid cancers receiving fluorouracil (5FU) and leucovorin

It is very uncertain whether oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… changes oral mucositis (any severity) compared with chlorhexidine rinse (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs Low-dose leucovorin rinse

Oral mucositis (any severity) · Patients with osteosarcoma (bone cancer) receiving high-dose methotrexate, vincristine and leucovorin

It is very uncertain whether oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… changes oral mucositis (any severity) compared with low-dose leucovorin rinse (very low certainty).

1 finding from 1 review

Oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed ice held in the mouth during cancer treatment) vs Low-dose leucovorin rinse

Oral mucositis (moderate to severe) · Patients with osteosarcoma (bone cancer) receiving high-dose methotrexate, vincristine and leucovorin

It is very uncertain whether oral cryotherapy (ice chips, ice-cold water, ice cubes or crushed… changes oral mucositis (moderate to severe) compared with low-dose leucovorin rinse (very low certainty).

1 finding from 1 review