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%

Zinc vs placebo

Taste acuity improvement - objective outcome (continuous) - taste detection (cross-over trial) · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - objective outcome (continuous) - taste… compared with placebo (very low certainty).

1 finding from 1 review

Erythropoietin mouthwash vs placebo

Oral mucositis (severe) · Adults receiving bone marrow/stem cell transplantation after conditioning therapy for haematological cancers

Erythropoietin mouthwash showed no clear difference in oral mucositis (severe) compared with placebo; GRADE not reported.

1 finding from 1 review

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)

Gingival bleeding (various bleeding indices) · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures (some with medical…

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in… led to lower gingival bleeding (various bleeding indices) compared with placebo/control mouthrinse, or no mouthrinse (mechanical oral…; GRADE not reported.

2 findings from 1 review

Keratinocyte growth factor (KGF; palifermin or repifermin), intravenous vs placebo

Normalcy of diet (supplemental nutrition: TPN, PEG, nasogastric tube or IV hydration) · Adults with cancer receiving treatment

Keratinocyte growth factor (KGF; palifermin or repifermin),… showed no clear difference in normalcy of diet (supplemental nutrition: TPN, PEG, nasogastric tube… compared with placebo; GRADE not reported.

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

Zinc vs placebo

Taste acuity improvement - patient-reported outcome · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)

It is very uncertain whether zinc supplements (zinc sulphate, zinc gluconate, zinc picolinate,… changes taste acuity improvement - patient-reported outcome compared with placebo (very low certainty).

1 finding from 1 review

Periodontal treatment (scaling and root planing, alone or with antimicrobials) vs Alternative (less intensive) periodontal treatment, alone or with placebo

Low birth weight < 1500 g · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination

It is very uncertain whether periodontal treatment (scaling and root planing, alone or with… changes low birth weight < 1500 g compared with alternative (less intensive) periodontal treatment, alone or with… (very low certainty).

1 finding from 1 review

Periodontal treatment (scaling and root planing, alone or with antimicrobials) vs Alternative (less intensive) periodontal treatment, alone or with placebo

Percentage of bleeding on probing (BOP) · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination

Periodontal treatment (scaling and root planing, alone or with… led to lower bleeding on probing compared with alternative (less intensive) periodontal treatment, alone or with…; GRADE not reported.

1 finding from 1 review

GM-CSF vs placebo or no treatment

Oral mucositis (moderate to severe) · Adults with cancer receiving treatment

It is very uncertain whether granulocyte-macrophage colony-stimulating factor (GM-CSF) changes oral mucositis (moderate to severe) compared with placebo or no treatment (very low certainty).

2 findings from 1 review

GM-CSF vs placebo or no treatment

Oral pain · Adults with cancer receiving treatment

Granulocyte-macrophage colony-stimulating factor (GM-CSF) showed no clear difference in oral pain (mean pain score, 0 to 10 scale) compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Keratinocyte growth factor (KGF; palifermin or repifermin), intravenous vs placebo

Interruptions to cancer treatment (chemotherapy delays/discontinuations) · Adults with cancer receiving treatment

Keratinocyte growth factor (KGF; palifermin or repifermin),… showed no clear difference in interruptions to cancer treatment (chemotherapy… compared with placebo; GRADE not reported.

1 finding from 1 review

Intestinal trefoil factor (ITF), oral spray vs placebo

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

Intestinal trefoil factor (ITF), oral spray led to lower oral mucositis (any severity) compared with placebo; GRADE not reported.

1 finding from 1 review

Chinese medicine vs no treatment/placebo

Xerostomia (other Chinese medicines) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region
1 finding from 1 review

Pilocarpine vs no treatment/placebo

Overall survival · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

It is very uncertain whether pilocarpine changes overall survival compared with no treatment/placebo (very low certainty).

1 finding from 1 review

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)

Plaque · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures (some with medical…

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in… leads to lower dental plaque (various plaque indices) compared with placebo/control mouthrinse, or no mouthrinse (mechanical oral… (high certainty).

2 findings from 1 review

Fluoride supplementation (tablets, drops, lozenges or chewing gum) vs placebo or no treatment

Decayed primary surfaces at 3 years · Pregnant women (for preventing dental caries in the primary teeth of their children)

Fluoride supplementation (tablets, drops, lozenges or chewing gum) showed no clear difference in decayed primary surfaces at 3 years compared with placebo or no treatment; GRADE not reported.

2 findings from 1 review