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What do systematic reviews say?

1,333 questions · 1,344 findings · 217 reviews · All outcomes

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No studies found 1,344 · 100%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Cast post and core with a diaphragm vs Cast post and core without a diaphragm

Outcome not reported · Participants with permanent endodontically-treated (root-filled) teeth for which a post is indicated to retain the final restoration

The review found no eligible studies for this question.

1 finding from 1 review

Root canal posts for the restoration of root filled teeth 2007 · Cochrane All outcomes
Minimum 6 months (planned)
No included trial evaluated the presence of a diaphragm in cast posts (a planned secondary comparison); no eligible study identified.
0 studies
No studies found

Antifungal drugs absorbed from GI tract (fluconazole, ketoconazole, itraconazole) vs placebo or no treatment

Amount of analgesia · Patients with cancer receiving chemotherapy and/or radiotherapy

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for preventing oral candidiasis for patients with cancer receiving treatment 2007 · Cochrane All outcomes
No trial reported this planned secondary outcome for any comparison in this review
Studies not reported
No studies found

Post and core restoration with a ferrule vs Post and core restoration without a ferrule

Outcome not reported · Participants with permanent endodontically-treated (root-filled) teeth for which a post is indicated to retain the final restoration

The review found no eligible studies for this question.

1 finding from 1 review

Root canal posts for the restoration of root filled teeth 2007 · Cochrane All outcomes
Minimum 6 months (planned)
No included trial evaluated the presence of a ferrule (a planned secondary comparison); no eligible study identified.
0 studies
No studies found

Antifungal drugs absorbed from GI tract (fluconazole, ketoconazole, itraconazole) vs placebo or no treatment

Relief of pain · Patients with cancer receiving chemotherapy and/or radiotherapy

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for preventing oral candidiasis for patients with cancer receiving treatment 2007 · Cochrane All outcomes
No trial reported this planned secondary outcome for any comparison in this review
Studies not reported
No studies found

Guided tissue regeneration (GTR) with barrier membrane (resorbable or non-resorbable) vs Open flap debridement (access flap surgery)

Aesthetics · Patients with chronic periodontitis (aged 21 years or older) with periodontal infra-bony defects; furcation-involved teeth and aggressive…

The review found no eligible studies for this question.

1 finding from 1 review

Guided tissue regeneration for periodontal infra-bony defects 2006 · Cochrane All outcomes
No data were found for this outcome (listed under 'Other outcomes: No data were found for the following outcomes').
0 studies
No studies found

Tongue scraping (mechanical tongue cleaning) vs Placebo or no intervention (nothing)

Outcome not reported · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis

The review found no eligible studies for this question.

1 finding from 1 review

Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
Minimum 4 weeks (planned)
No eligible randomized controlled trials comparing tongue scraping with placebo or no intervention were identified.
0 studies
No studies found

Guided tissue regeneration (GTR) with barrier membrane (resorbable or non-resorbable) vs Open flap debridement (access flap surgery)

Cost/benefit (treatment time plus estimated material costs) · Patients with chronic periodontitis (aged 21 years or older) with periodontal infra-bony defects; furcation-involved teeth and aggressive…

The review found no eligible studies for this question.

1 finding from 1 review

Guided tissue regeneration for periodontal infra-bony defects 2006 · Cochrane All outcomes
No data were found for this outcome (listed under 'Other outcomes: No data were found for the following outcomes').
0 studies
No studies found

Tongue scraper or tongue cleaner (One Drop Only tongue cleaner; Tongue-Putzer scraper; polystyrene scraper) vs Toothbrush (used to clean the tongue)

Self-expressed (perceived) or organoleptic (human nose) assessment of halitosis · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis

The review found no eligible studies for this question.

1 finding from 1 review

Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
Minimum 4 weeks (planned)
Neither of the two included trials provided any self expressed (perceived) or organoleptic (human nose) assessments of halitosis (the review's primary outcomes); no data.
0 studies
No studies found

Guided tissue regeneration (GTR) with barrier membrane (resorbable or non-resorbable) vs Open flap debridement (access flap surgery)

Disease recurrence (% sites with >=2 mm loss of probing attachment from 12 months after treatment) · Patients with chronic periodontitis (aged 21 years or older) with periodontal infra-bony defects; furcation-involved teeth and aggressive…

The review found no eligible studies for this question.

1 finding from 1 review

Guided tissue regeneration for periodontal infra-bony defects 2006 · Cochrane All outcomes
No data were found for this outcome (listed under 'Other outcomes: No data were found for the following outcomes').
0 studies
No studies found

Guided tissue regeneration (GTR) with barrier membrane (resorbable or non-resorbable) vs Open flap debridement (access flap surgery)

Ease of maintenance (% of sites with <4 mm probing depth) · Patients with chronic periodontitis (aged 21 years or older) with periodontal infra-bony defects; furcation-involved teeth and aggressive…

The review found no eligible studies for this question.

1 finding from 1 review

Guided tissue regeneration for periodontal infra-bony defects 2006 · Cochrane All outcomes
No data were found for this outcome (listed under 'Other outcomes: No data were found for the following outcomes').
0 studies
No studies found

Tongue scraping (mechanical tongue cleaning) vs Mouthwash or other chemical intervention

Outcome not reported · Adults (over 18 years) with a clinical or self-assessed diagnosis of halitosis

The review found no eligible studies for this question.

1 finding from 1 review

Tongue scraping for treating halitosis 2006 · Cochrane All outcomes
Minimum 4 weeks (planned)
No randomized controlled trials comparing mechanical tongue cleaning with mouthwashes were identified; the review notes "the somewhat unexpected lack of randomized controlled trials comparing the effectiveness of…
0 studies
No studies found

Lingualised teeth (maxillary anatomic + mandibular non-anatomic; lingualised occlusion scheme) vs Zero-degree teeth (non-anatomic, cuspless)

Comfort · Edentulous adult patients requiring complete dentures

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for replacing missing teeth: denture chewing surface designs in edentulous people 2005 · Cochrane All outcomes
no estimate extracted
Studies not reported
No studies found

Lingualised teeth (maxillary anatomic + mandibular non-anatomic; lingualised occlusion scheme) vs Zero-degree teeth (non-anatomic, cuspless)

Patient perceived chewing efficiency · Edentulous adult patients requiring complete dentures

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for replacing missing teeth: denture chewing surface designs in edentulous people 2005 · Cochrane All outcomes
no estimate extracted
Studies not reported
No studies found

Lingualised teeth (maxillary anatomic + mandibular non-anatomic; lingualised occlusion scheme) vs Zero-degree teeth (non-anatomic, cuspless)

Patient perceived chewing function · Edentulous adult patients requiring complete dentures

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for replacing missing teeth: denture chewing surface designs in edentulous people 2005 · Cochrane All outcomes
no estimate extracted
Studies not reported
No studies found

Direct resin composite veneer vs Indirect resin composite veneer

Adverse drug reactions · Patients with permanent anterior teeth with intrinsic staining suitable for laminate veneer restorations

The review found no eligible studies for this question.

1 finding from 1 review

Direct versus indirect veneer restorations for intrinsic dental stains 2004 · Cochrane All outcomes
Planned outcome; no adverse-reaction data were reported by the included trial.
0 studies
No studies found

Fluoride mouthrinse, gel or varnish combined with fluoride toothpaste (any combined regimen) vs Fluoride toothpaste alone

Adverse effects: dental fluorosis · Children and adolescents aged 16 years or less

The review found no eligible studies for this question.

1 finding from 1 review

Combinations of topical fluoride (toothpastes, mouthrinses, gels, varnishes) versus single topical fluoride for… 2004 · Cochrane All outcomes
Fluorosis data have not been reported in any of the trials.
0 studies
No studies found

Direct resin composite veneer vs Indirect resin composite veneer

Pain following treatment · Patients with permanent anterior teeth with intrinsic staining suitable for laminate veneer restorations

The review found no eligible studies for this question.

1 finding from 1 review

Direct versus indirect veneer restorations for intrinsic dental stains 2004 · Cochrane All outcomes
Planned outcome; pain following treatment was not reported by the included trial (earlier trial publications reported treatment times, not pain).
0 studies
No studies found

Direct resin composite veneer vs Indirect resin composite veneer

Costs · Patients with permanent anterior teeth with intrinsic staining suitable for laminate veneer restorations

The review found no eligible studies for this question.

1 finding from 1 review

Direct versus indirect veneer restorations for intrinsic dental stains 2004 · Cochrane All outcomes
Planned outcome; cost of treatment was not reported by the included trial.
0 studies
No studies found

Ozone applied to the carious lesion (10 or 40 seconds), with a fluoride reductant and oral hygiene/preventive advice vs No ozone, with a fluoride reductant and oral hygiene/preventive advice (as in the intervention group)

Further conventional dental treatment (filling and drilling) (binary yes/no) · People of any age with caries (including demineralisation in non-cavitated carious lesions); the caries may affect any single tooth…

The review found no eligible studies for this question.

1 finding from 1 review

Ozone therapy for the treatment of dental caries 2004 · Cochrane All outcomes
Data were not provided by any study on the number of lesions requiring restorations to 6 months or later; no data on any further conventional treatment or other dental interventions.
Studies not reported
No studies found

Ozone applied to the carious lesion (10 or 40 seconds), with a fluoride reductant and oral hygiene/preventive advice vs No ozone, with a fluoride reductant and oral hygiene/preventive advice (as in the intervention group)

Costs · People of any age with caries (including demineralisation in non-cavitated carious lesions); the caries may affect any single tooth…

The review found no eligible studies for this question.

1 finding from 1 review

Ozone therapy for the treatment of dental caries 2004 · Cochrane All outcomes
No data were provided in any of the included trials on costs.
Studies not reported
No studies found