Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,066 questions · 3,346 findings · 178 reviews · Dental caries

No studies found 48 · 1.4%GRADE not reported 2,789 · 83.4%Very low 208 · 6.2%Low 129 · 3.9%Moderate 136 · 4.1%High 36 · 1.1%

Composite strip crowns with composite, fiber, or reverse metal posts vs Alternative post type

Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy

In one RCT, composite strip crowns with composite posts had an annual failure rate of 2.3% after 1 year.

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Cost of the intervention · People with a permanent tooth that has undergone endodontic (root canal) treatment

The review found no eligible studies for this question.

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Patient satisfaction / quality of life (validated measure) · People with a permanent tooth that has undergone endodontic (root canal) treatment

The review found no eligible studies for this question.

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Catastrophic failure of the restored tooth or restoration leading directly to extraction · People with a permanent tooth that has undergone endodontic (root canal) treatment
1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Periodontal health status · People with a permanent tooth that has undergone endodontic (root canal) treatment

The review found no eligible studies for this question.

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Non-catastrophic failure of the post · People with a permanent tooth that has undergone endodontic (root canal) treatment

It is very uncertain whether single full-coverage metal-ceramic crown over composite core and post changes non-catastrophic failure of the post compared with direct adhesive composite restoration with post (conventional… (very low certainty).

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Incidence or recurrence of caries (assessed clinically or by radiographs) · People with a permanent tooth that has undergone endodontic (root canal) treatment

The review found no eligible studies for this question.

1 finding from 1 review

Single full-coverage metal-ceramic crown over composite core and post vs Direct adhesive composite restoration with post (conventional filling, no crown)

Non-catastrophic failure of the restoration (requiring further treatment) · People with a permanent tooth that has undergone endodontic (root canal) treatment

It is very uncertain whether single full-coverage metal-ceramic crown over composite core and post changes non-catastrophic failure of the restoration (requiring further… compared with direct adhesive composite restoration with post (conventional… (very low certainty).

1 finding from 1 review

Potassium nitrate/dimethyl isosorbide/polycarboxylate cement (KNO3/DMI/PCa) vs Potassium nitrate/polycarboxylate cement (KNO3/PCa)

Clinical success (absence of periapical pathology, tenderness to pressure and fistula formation) at 24 months · Adults with asymptomatic teeth with vital carious pulp exposures
1 finding from 1 review
  • Hodosh 2003 (Analysis 3.1): all 18 patients receiving KNO3/DMI/PCa responded favourably (0/18 developed clinical symptoms) versus 9/17 in the KNO3/PCa group; symptomatic teeth required endodontic therapy or extraction.…
    1 study · 35 participants
    GRADE not reported

Potassium nitrate/dimethyl isosorbide/polycarboxylate cement (KNO3/DMI/PCa) vs Polycarboxylate cement (PCa) alone

Clinical success (absence of periapical pathology, tenderness to pressure and fistula formation) at 24 months · Adults with asymptomatic teeth with vital carious pulp exposures
1 finding from 1 review
  • Hodosh 2003 (Analysis 3.1): all 18 patients receiving KNO3/DMI/PCa responded favourably (0/18 developed clinical symptoms) versus 10/12 in the PCa group. "The results in groups two and three were statistically…
    1 study · 30 participants
    GRADE not reported

Experimental adhesive containing ammonium-based methacrylate monomer (MADQUAT) vs Conventional/control orthodontic adhesive (e.g., Transbond XT) or negative control

Enamel remineralization / carious lesion development · Human enamel specimens around orthodontic brackets (in vitro)

In vitro, an ammonium-based methacrylate-containing adhesive showed significant remineralization/anti-demineralization versus control in a single study (ungraded).

1 finding from 1 review

Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)

Sensitivity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
17 findings from 1 review
Show 14 more findings

Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)

Specificity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
17 findings from 1 review
Show 14 more findings

Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)

Diagnostic accuracy on surfaces with pit and fissure sealants · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…

The review found no eligible studies for this question.

1 finding from 1 review
  • Imaging modalities to inform the detection and diagnosis of early caries 2021 · Cochrane All outcomes
    Up to 3 months between index test and reference standard (in vivo studies) · Pit and fissure sealants
    Pre-specified heterogeneity investigation of surfaces with pit and fissure sealants: no study reported the inclusion of sealants that would allow evaluation of early caries lesions.
    0 studies
    No studies found

Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)

Diagnostic accuracy in previously restored teeth (secondary caries) · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…

The review found no eligible studies for this question.

1 finding from 1 review
  • Imaging modalities to inform the detection and diagnosis of early caries 2021 · Cochrane All outcomes
    Up to 3 months between index test and reference standard (in vivo studies) · Restorations (secondary caries)
    Pre-specified heterogeneity investigation of teeth with previously applied restorations (secondary caries): no study intentionally included restored teeth in its sample. Studies evaluating secondary caries were…
    0 studies
    No studies found

No dentinal caries removal (caries sealed under a preformed metal crown or restoration without removing dentinal caries) vs Complete caries removal

Restoration failure · Patients with carious teeth, affecting any tooth surface(s), in unrestored primary and permanent teeth

No dentinal caries removal (caries sealed under a preformed metal… probably leads to lower failure of restorations compared with complete caries removal (moderate certainty).

1 finding from 1 review

No dentinal caries removal (caries sealed under a preformed metal crown or restoration without removing dentinal caries) vs Complete caries removal

Signs or symptoms of pulpal disease · Patients with carious teeth, affecting any tooth surface(s), in unrestored primary and permanent teeth

No dentinal caries removal (caries sealed under a preformed metal… showed no clear difference in signs or symptoms of pulpal disease compared with complete caries removal (moderate certainty).

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 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

Electronic cigarette use vs Non-smokers

Peri-implant clinical and radiographic parameters (plaque index, probing depth, bone loss, pro-inflammatory profile) · Adult e-cigarette (ENDS) users with dental implants (incl. male implant-supported prosthesis patients)

Among dental implant patients, e-cigarette users show worse peri-implant parameters (more plaque, worse clinical and radiographic outcomes) than non-smokers (narrative synthesis; ungraded).

1 finding from 1 review
  • An Umbrella Review of E-Cigarettes' Impact on Oral Microbiota and Biofilm Buildup. 2025 All outcomes
    Dental implant / peri-implant care · Implant/peri-implant populations: Vamos (implant patients), Youssef (male implant patients only), Yang (broad SR incl. peri-implant)
    Narrative synthesis: e-cigarette users with dental implants showed a higher peri-implant plaque index and worse clinico-radiographic and immunological peri-implant parameters than non-smokers (worse than non-smokers…
    3 studies
    GRADE not reported