Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,411 questions · 5,986 findings · 226 reviews · Oral Health

No studies found 1,305 · 21.8%GRADE not reported 2,988 · 49.9%Very low 1,030 · 17.2%Low 476 · 8%Moderate 156 · 2.6%High 31 · 0.5%

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Metal-free single crowns (full-contour zirconia) vs Cast gold (conventional metal) single crowns

Crown failure · Adults (18 years or older) needing a single crown in the molar or premolar region

It is very uncertain whether metal-free single crowns (full-contour zirconia) changes crown failure compared with cast gold (conventional metal) single crowns (very low certainty).

2 findings from 1 review

Periodontal treatment (scaling and root planing, polishing, or surgery), alone or with oral hygiene counselling, antiseptics, or antimicrobials vs no treatment

Preterm birth < 35 weeks · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination

It is very uncertain whether periodontal treatment (scaling and root planing, polishing, or… changes preterm birth < 35 weeks compared with no treatment (very low certainty).

1 finding from 1 review

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) vs placebo or control

Quality of life or participant satisfaction · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)
1 finding from 1 review

High-viscosity glass-ionomer ART restorations vs Conventional treatment using composite (with local anaesthetic)

Restoration failure (primary dentition) · Children with carious primary teeth

ART using H-GIC led to higher restoration failure (primary teeth) compared with conventional treatment using composite (with local anaesthetic); GRADE not reported.

1 finding from 1 review

Amifostine vs no treatment/placebo

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

Amifostine showed no clear difference in disease-free survival compared with no treatment/placebo; GRADE not reported.

1 finding from 1 review

New types of fissure sealant (e.g. ormocer-based) vs No sealant (control)

Outcome not reported · Children and adolescents (general population, aged under 20 years)

The review found no eligible studies for this question.

1 finding from 1 review

Amifostine vs no treatment/placebo

Quality of life · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

Amifostine showed no clear difference in quality of life compared with no treatment/placebo; GRADE not reported.

1 finding from 1 review

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

Number of days unable to take medicine orally · Adults with cancer receiving treatment

The review found no eligible studies for this question.

1 finding from 1 review

Amifostine vs no treatment/placebo

Salivary flow rate (unstimulated) · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

It is very uncertain whether amifostine changes salivary flow rate (mg/5 min, unstimulated) compared with no treatment/placebo (very low certainty).

2 findings from 1 review

Amifostine vs no treatment/placebo

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

Amifostine showed no clear difference in progression-free survival compared with no treatment/placebo; GRADE not reported.

1 finding from 1 review

High-viscosity glass-ionomer ART restorations vs Conventional treatment using H-GIC (rotary instruments)

Pain (during procedure, primary dentition) · People with dental caries in primary teeth (mainly children)

ART using high-viscosity glass ionomer cement (H-GIC), hand… showed no clear difference in pain (during procedure, primary dentition) compared with conventional treatment using H-GIC (rotary instruments) (low certainty).

1 finding from 1 review

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

Filled 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 filled primary surfaces at 5 years compared with placebo or no treatment; GRADE not reported.

2 findings from 1 review

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

Adverse events · Adults with cancer receiving treatment
1 finding from 1 review

Granulocyte-colony stimulating factor (G-CSF; pegfilgrastim, single dose) vs Granulocyte-colony stimulating factor (G-CSF; filgrastim, multiple doses)

Oral mucositis (any severity) · Children receiving bone marrow/stem cell transplantation after conditioning therapy for mixed cancers

Granulocyte-colony stimulating factor (G-CSF; pegfilgrastim, single… showed no clear difference in oral mucositis (any severity) compared with granulocyte-colony stimulating factor (G-CSF; filgrastim, multiple…; GRADE not reported.

1 finding from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Cantilevered bridge failure · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis
1 finding from 1 review

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

Salivary flow rate · Patients receiving radiotherapy on its own or in addition to chemotherapy to the head and neck region

The review found no eligible studies for this question.

1 finding from 1 review

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

Caries presence in primary teeth · Pregnant women (for preventing dental caries in the primary teeth of their children)

It is very uncertain whether fluoride supplementation (tablets, drops, lozenges or chewing gum) changes children with caries in the primary teeth at 3 years compared with placebo or no treatment (very low certainty).

2 findings from 1 review