Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

17 questions · 18 findings · 5 reviews · Dental caries

No studies found 12 · 66.7%GRADE not reported 4 · 22.2%Very low 0 · 0%Low 2 · 11.1%Moderate 0 · 0%High 0 · 0%

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)

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 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 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 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

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

Marginal deterioration of the restoration and fracture of the remaining tooth tissue · 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

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

Restoration survival · 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

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

Economic data: direct costs of materials and any reported associated indirect costs · Adults and adolescents with permanent posterior molar and premolar teeth suitable for Class I and II, but excluding Class V, amalgam…

The review found no eligible studies for this question.

1 finding from 1 review

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

Adverse effects · Adults and adolescents with permanent posterior molar and premolar teeth suitable for Class I and II, but excluding Class V, amalgam…

The review found no eligible studies for this question.

1 finding from 1 review

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

Secondary caries · Adults and adolescents with permanent posterior molar and premolar teeth suitable for Class I and II, but excluding Class V, amalgam…

The review found no eligible studies for this question.

1 finding from 1 review

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

Amalgam vs Preformed metal crown (PMC)

Treatment failure (annual failure rate) · Children with carious primary molars treated by pulpotomy (vital pulp therapy)

Preformed metal crowns had a low annual failure rate (2.4%) in primary molars after pulpotomy, lower than amalgam in the same trial (single high-risk-of-bias RCT; low quality of evidence; not GRADE-rated).

2 findings from 1 review

A permanent restorative material or technique (e.g. amalgam; glass ionomer (type I-IV); composite resin (macrofilled, microfilled, hybrid, nanofilled); resin-modified glass ionomer (compomer, giomer); cement/cermet; stainless steel or nickel-chrome crown; pre-fabricated resin/porcelain veneer facing; microabrasion) vs A different permanent restorative material or technique

Outcome not reported · Children and adolescents under 18 years with amelogenesis imperfecta requiring restorative care of anterior teeth, irrespective of…

The review found no eligible studies for this question.

1 finding from 1 review

A permanent restorative material or technique (e.g. amalgam; glass ionomer (type I-IV); composite resin (macrofilled, microfilled, hybrid, nanofilled); resin-modified glass ionomer (compomer, giomer); cement/cermet; stainless steel or nickel-chrome crown; pre-fabricated resin/porcelain veneer facing; microabrasion) vs A different permanent restorative material or technique

Outcome not reported · Children and adolescents under 18 years with amelogenesis imperfecta requiring restorative care of posterior teeth, irrespective of…

The review found no eligible studies for this question.

1 finding from 1 review

Amalgam restoration vs Composite resin, compomer, conventional glass-ionomer cement, or resin-modified GIC (head-to-head RCT comparators)

Treatment failure (annual failure rate) · Children with previously unrestored, vital carious lesions in primary teeth (no pulp therapy); aged 1.5-11 years

Amalgam restorations in primary teeth showed a wide annual failure rate (1-28%) across 4 RCTs; the evidence is of low quality (high risk of bias; ungraded).

1 finding from 1 review