Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,411 questions · 1,474 findings · 170 reviews

No studies found 336 · 22.8%GRADE not reported 97 · 6.6%Very low 419 · 28.4%Low 395 · 26.8%Moderate 188 · 12.8%High 39 · 2.6%

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

Self-management (self-administered/self-monitored OHA) vs Professional OHA

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

It is very uncertain whether self-management (self-administered/self-monitored OHA) changes periodontal health: gingivitis compared with professional 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

Personalised one-to-one OHA vs Routine one-to-one OHA

Patient-reported behaviour changes and health indices · Children or adults (fit and healthy, or with a well-defined medical condition)
1 finding from 1 review

Self-management (self-administered/self-monitored OHA) vs Professional OHA

Patient-reported behaviour changes · Children or adults (fit and healthy, or with a well-defined medical condition)
1 finding from 1 review

Personalised one-to-one OHA vs Routine one-to-one OHA

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

It is very uncertain whether personalised one-to-one OHA changes periodontal health: gingivitis compared with routine one-to-one OHA (very low certainty).

1 finding from 1 review

Personalised one-to-one OHA vs Routine one-to-one OHA

Dental caries · 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

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

Enhanced one-to-one OHA vs Routine one-to-one OHA

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

It is very uncertain whether enhanced one-to-one OHA changes periodontal health: gingivitis compared with one-to-one OHA (standard) (very low certainty).

1 finding from 1 review

Sedation

Outcome not reported · Medically compromised children (ASA III+) or children with learning/behavioural difficulties needing dental treatment

The review found no eligible studies for this question.

1 finding from 1 review
  • 'Some of the techniques described may be useful in the management of medically compromised patients, but at present there are no studies carried out in these groups.' (Discussion) Explicit evidence gap.
    0 studies
    No studies found

Combined oral contraceptive pill vs any other medical treatment

Self‐reported pain (dysmenorrhoea) at the end of treatment (continuous data): dysmenorrhoea at 6 months' · women with endometriosis
2 findings from 1 review

Combined oral contraceptive pill vs any other medical treatment

Self‐reported pain (dysmenorrhoea) (dichotomous data) ‐ reduction of pain to zero at 6 months' · women with endometriosis

It is very uncertain whether combined oral contraceptive pill changes self‐reported pain (dysmenorrhoea) (dichotomous data): reduction of… compared with other medical treatment (very low certainty).

2 findings from 1 review