Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

107 questions · 138 findings · 18 reviews · Dental caries

No studies found 23 · 16.7%GRADE not reported 94 · 68.1%Very low 14 · 10.1%Low 6 · 4.3%Moderate 1 · 0.7%High 0 · 0%

Problem-driven / less regular dental visiting vs More frequent / regular dental visits

Dental caries · Healthy children and adolescents in the United Arab Emirates

A higher frequency of dental visits was associated with lower caries, while problem-driven visiting was associated with higher severe early childhood caries (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Less frequent tooth brushing (< twice daily) vs More frequent tooth brushing (>= twice daily)

Dental caries · Healthy children and adolescents in the United Arab Emirates

More frequent tooth brushing was generally protective against caries, though findings were somewhat inconsistent across studies (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Low birth weight (<2500 g) vs Normal birth weight (2500 g or more)

Early childhood caries (ECC) · Children aged 6 years or younger (preschool children)

Adjusted analyses also showed no association between low birth weight and early childhood caries (adjusted OR 1.05, 95% CI 0.71 to 1.57); certainty not graded.

3 findings from 1 review

Preterm birth (<37 weeks gestation) vs Full-term birth (37 weeks or more gestation)

Early childhood caries (ECC) · Children aged 6 years or younger (preschool children)

In children aged 3 years or younger, preterm birth was not associated with early childhood caries (OR 0.90, 95% CI 0.59 to 1.37); certainty not graded.

2 findings from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Presence of clinical symptoms (pain, swelling, diagnosis of pulpitis, abscess formation) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Patient satisfaction (measured by patient satisfaction or aesthetic scales) · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Success or failure of restoration (as defined by the USPHS criteria) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Adverse events · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Perioperative or postoperative pain or discomfort · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Further restoration required (repair, restoration, placement of crown/inlay, root filling) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Success or failure of restoration (as defined by the USPHS criteria) · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Extraction of tooth (due to decay) · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Adverse events · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Perioperative or postoperative pain or discomfort · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Extraction of tooth (due to decay) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Presence of clinical symptoms (pain, swelling, diagnosis of pulpitis, abscess formation) · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam) vs Replacement of a defective amalgam restoration in a permanent molar or premolar tooth (with amalgam)

Further restoration required (repair, restoration, placement of crown/inlay, root filling) · Adults (16 years or over) with one or more defective amalgam restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Repair of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite) vs Replacement of a defective resin composite restoration in a permanent molar or premolar tooth (with resin composite)

Patient satisfaction (measured by patient satisfaction or aesthetic scales) · Adults (16 years or over) with one or more defective resin composite restoration(s) in a molar or premolar tooth/teeth

The review found no eligible studies for this question.

1 finding from 1 review

Mixed beam (neutron and photon) radiotherapy vs Conventional photon radiotherapy

Locoregional control · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Mixed beam (neutron and photon) radiotherapy showed no clear difference in locoregional control compared with conventional photon radiotherapy; GRADE not reported.

1 finding from 1 review

Altered fractionation radiotherapy (hyperfractionated and/or accelerated) vs Conventional (standard) fractionation radiotherapy

Locoregional control · People with primary squamous cell carcinoma of the oral cavity (ICD-O C01-C06) or oropharynx (ICD-O C09-C10); head and neck cancer trials…

Hyperfractionated/accelerated radiotherapy led to lower locoregional control compared with conventional (standard) fractionation radiotherapy; GRADE not reported.

2 findings from 1 review