Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,227 questions · 2,562 findings · 156 reviews · All outcomes

No studies found 297 · 11.6%GRADE not reported 1,616 · 63.1%Very low 405 · 15.8%Low 144 · 5.6%Moderate 81 · 3.2%High 19 · 0.7%

Epidermal growth factor (EGF), oral spray vs placebo

Interruptions to cancer treatment (radiotherapy breaks longer than two days) · Adults with cancer receiving treatment

Epidermal growth factor (EGF), oral spray showed no clear difference in interruptions to cancer treatment (radiotherapy breaks longer than… compared with placebo; GRADE not reported.

1 finding from 1 review

Epidermal growth factor (EGF), oral spray vs placebo

Normalcy of diet (total parenteral nutrition) · Adults with cancer receiving treatment

Epidermal growth factor (EGF), oral spray showed no clear difference in normalcy of diet (total parenteral nutrition) compared with placebo; GRADE not reported.

1 finding from 1 review

Preterm birth (oral health / enamel defects) vs Full-term children

Caries (DMFT) and enamel defects · Preterm children (about 8 years old) in the United Arab Emirates (Dubai)

One study found preterm children had higher DMFT and a fourfold higher prevalence of enamel defects than full-term children (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Oral cytology (e.g. OralCDx brush biopsy, CytID) vs Reference standard: examination and clinical evaluation by a physician/clinician with specialist knowledge or training (long-term follow-up accepted for those screened negative)

Outcome not reported · Apparently healthy adults not reporting symptoms of OPMD or OSCC, attending an organised screening or surveillance programme, or screened…

The review found no eligible studies for this question.

1 finding from 1 review

Any form of one-to-one oral hygiene advice (OHA) vs No OHA

Dental caries · Children or adults (fit and healthy, or with a well-defined medical condition)

It is very uncertain whether any form of one-to-one oral hygiene advice (OHA) changes dental caries compared with no OHA (very low certainty).

1 finding from 1 review

Any form of one-to-one oral hygiene advice (OHA) vs No OHA

Gingivitis · Children or adults (fit and healthy, or with a well-defined medical condition)

It is very uncertain whether any form of one-to-one oral hygiene advice (OHA) changes periodontal health: gingivitis compared with no OHA (very low certainty).

1 finding from 1 review

Any form of one-to-one oral hygiene advice (OHA) vs No OHA

Patient-reported changes in knowledge, attitudes and quality of life · Children or adults (fit and healthy, or with a well-defined medical condition)
1 finding from 1 review

Any form of one-to-one oral hygiene advice (OHA) vs No OHA

Plaque · Children or adults (fit and healthy, or with a well-defined medical condition)

Any form of one-to-one oral hygiene advice (OHA) showed no clear difference in periodontal health: plaque levels compared with no OHA (low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Daytime symptom: thirstiness in the morning (questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

Oral appliance or functional orthopaedic appliance showed no clear difference in daytime symptom: thirstiness in the morning (questionnaire) compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Reduction of apnoea episodes (apnoea-hypopnoea index) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes reduction of apnoea episodes (apnoea-hypopnoea index) compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Nocturnal symptom: nightmares (questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

Oral appliance or functional orthopaedic appliance showed no clear difference in nocturnal symptom: nightmares (questionnaire) compared with placebo or no treatment; GRADE not reported.

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Tiredness · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes daytime symptom: tiredness (Brouillette questionnaire) compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Oral appliance or functional orthopaedic appliance vs placebo or no treatment

Nocturnal symptom: habitual snoring (questionnaire) · Children with obstructive sleep apnoea (aged 15 years or younger)

It is very uncertain whether oral appliance or functional orthopaedic appliance changes nocturnal symptom: habitual snoring (questionnaire) compared with placebo or no treatment (very low certainty).

1 finding from 1 review