Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,338 questions · 2,104 findings · 136 reviews · Dental caries

No studies found 159 · 7.6%GRADE not reported 1,657 · 78.8%Very low 138 · 6.6%Low 111 · 5.3%Moderate 36 · 1.7%High 3 · 0.1%

Adhesively bonded amalgam restorations in conventional preparations utilising deliberate retention (all bonding agents) vs Amalgam restoration

Post‐insertion sensitivity or pain assessed by a validated pain scale · Adults and adolescents with permanent posterior molar and premolar teeth suitable for Class I and II, but excluding Class V, amalgam…
1 finding from 1 review

Fluoride mouthrinse (any fluoride agent, concentration, volume, frequency or technique; swished and expectorated, not swallowed) vs placebo or no treatment

Tooth staining/discolouration (adverse effect) · Children and adolescents aged 16 years or less
1 finding from 1 review

Fluoride gel (topically applied; operator- or self-applied; any fluoride agent/concentration; frequency at least once a year) vs placebo or no treatment

Unacceptability of treatment (dropouts/exclusions during the trial) · Children and adolescents aged 16 years or less

Fluoride gel (topically applied; operator- or self-applied; any… showed no clear difference in unacceptability of treatment (dropouts/exclusions during the trial) compared with placebo or no treatment; GRADE not reported.

3 findings from 1 review

Xylitol syrup (high dose, 8 g/day) vs Control (low-dose xylitol, 2.67 g/day) syrup

Adverse effects (loose stools, diarrhoea) · Infants (primary teeth; baseline about 9 to 15 months)
1 finding from 1 review

Fluoride gel (topically applied; operator- or self-applied; any fluoride agent/concentration; frequency at least once a year) vs placebo or no treatment

Mucosal irritation / oral soft tissue allergic reaction (signs of sensitivity) · Children and adolescents aged 16 years or less

The review found no eligible studies for this question.

1 finding from 1 review

Xylitol lozenges (5 g/day) vs placebo control

Adverse effects (sores in the mouth, cramps, bloating, constipation, flatulence, loose stool or diarrhoea) · adults
1 finding from 1 review

Fluoride gel (topically applied; operator- or self-applied; any fluoride agent/concentration; frequency at least once a year) vs placebo or no treatment

Staining · Children and adolescents aged 16 years or less

The review found no eligible studies for this question.

1 finding from 1 review

Fluoride gel (topically applied; operator- or self-applied; any fluoride agent/concentration; frequency at least once a year) vs placebo or no treatment

Signs of acute toxicity during gel application (nausea, gagging, vomiting) · Children and adolescents aged 16 years or less

It is very uncertain whether fluoride gel (topically applied; operator- or self-applied; any… changes signs of acute toxicity during gel application (nausea, gagging,… compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Xylitol chewing gum vs No treatment or non-cariogenic control

Outcome not reported · Children and adults

The review found no eligible studies for this question.

1 finding from 1 review

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

Costs (direct costs of interventions) · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in the primary dentition

The review found no eligible studies for this question.

1 finding from 1 review

Fluoride varnish vs placebo or no treatment

Adverse effects / specific side effects (oral allergic reactions, mucosal irritation, adverse symptoms such as nausea, gagging, vomiting) · Children and adolescents aged 16 years or less
1 finding from 1 review

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

Patient's view and satisfaction with the treatment · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in the primary dentition

The review found no eligible studies for this question.

1 finding from 1 review

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

Adverse effects · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in the primary dentition

The review found no eligible studies for this question.

1 finding from 1 review

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

Postoperative sensitivity, marginal adaptation, anatomic form and other clinical outcomes (USPHS restoration quality; includes tooth vitality and pulpitis) · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in the primary dentition

The review found no eligible studies for this question.

1 finding from 1 review

Resin composite restorations containing antibacterial agents vs Non-antibacterial containing composite restorations

Restoration survival · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in the primary dentition

The review found no eligible studies for this question.

1 finding from 1 review

Flossing plus toothbrushing (self-performed; manual or automated floss) vs Toothbrushing alone

Plaque · Dentate adults aged 16 years or older (excluding orthodontic patients and those with severe periodontal disease)

It is very uncertain whether flossing plus toothbrushing (self-performed; manual or automated… changes plaque (Turesky-modified Quigley-Hein/other plaque indices; SMD) compared with toothbrushing alone (with or without a negative-control/placebo rinse) (very low certainty).

3 findings from 1 review