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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

321 questions in 77 reviews · Dental caries

current versions
No studies 321 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
1450 ppm F toothpaste vs 250 ppm F toothpaste
Adverse effects of toothpaste · Young children with primary (deciduous) dentition (aged 1 to 6 years at study start)
Fluoride toothpastes of different concentrations for preventing dental caries (2019) · Cochrane
Adverse effects of toothpaste: no studies reported this outcome.0 studiesNo studies
Rubber/elastomeric cleaning stick plus toothbrushing vs Flossing plus toothbrushing
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Interdental brushing plus toothbrushing vs Toothbrushing alone
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Patient-used 250 ppm F mouthrinse (100 ppm amine F/150 ppm NaF), daily vs 0 ppm F placebo mouthrinse, daily
Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond) · At debond (end of orthodontic treatment)
Fluorides for preventing early tooth decay (demineralised lesions) during fixed brace treatment (2019) · Cochrane
SoF 4. Adverse effects: none of the trials reported this outcome.0 studiesNo studies
1000 or 1100 ppm F toothpaste vs Non-fluoride (0 ppm F) placebo toothpaste
Proportion developing new caries · Adults with mature permanent dentition (aged 18 to 93 years at study start)
Fluoride toothpastes of different concentrations for preventing dental caries (2019) · Cochrane
Proportion of adults developing new caries: no studies reported this outcome.0 studiesNo studies
Rubber/elastomeric cleaning stick plus toothbrushing vs Toothbrushing alone
Harms and adverse effects · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
Harms and adverse outcomes: Not reported (neither study reported on adverse effects).0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Toothbrushing alone
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Patient-used 250 ppm F mouthrinse (100 ppm amine F/150 ppm NaF), daily vs 0 ppm F placebo mouthrinse, daily
Number of participants with more severe DLs (severity of DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond) · At debond (end of orthodontic treatment)
Fluorides for preventing early tooth decay (demineralised lesions) during fixed brace treatment (2019) · Cochrane
SoF 4. Number of participants with more severe DLs: none of the trials reported this outcome.0 studiesNo studies
Laser enamel preparation vs Air abrasion
Any planned outcome (sealant retention, caries, etc.) · Patients with premolars/molars requiring pit-and-fissure sealants
The clinical effects of laser preparation of tooth surfaces for fissure sealants placement: a systematic… (2019)
no estimate extracted0 studiesNo studies
Interdental brushing plus toothbrushing vs Flossing plus toothbrushing
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Flossing plus toothbrushing
Gingivitis (gingival index) · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
Gingivitis measured by gingival index: Not measured.0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Flossing plus toothbrushing
Harms and adverse effects · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
Harms and adverse outcomes: Not reported (neither study reported on adverse effects).0 studiesNo studies
Juvenile idiopathic arthritis (JIA) vs Children and adolescents without JIA (healthy peers)
Dental erosive wear · Children and adolescents with juvenile idiopathic arthritis (JIA)
Oral health in children and adolescents with juvenile idiopathic arthritis - a systematic review and… (2019)
The present review lacked studies with focus on erosive wear; it concluded that for dental erosive wear there is no scientific evidence to answer the posed research questions.0 studiesNo studies
1000 or 1100 ppm F toothpaste vs Non-fluoride (0 ppm F) placebo toothpaste
Adverse effects of toothpaste · Adults with mature permanent dentition (aged 18 to 93 years at study start)
Fluoride toothpastes of different concentrations for preventing dental caries (2019) · Cochrane
Adverse effects of toothpaste: no studies reported this outcome.0 studiesNo studies
Rubber/elastomeric cleaning stick plus toothbrushing vs Interdental brushing plus toothbrushing
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Toothbrushing alone
Harms and adverse effects · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
Harms and adverse outcomes: Not reported (neither study reported on adverse effects).0 studiesNo studies
Oral irrigation plus toothbrushing vs Toothbrushing alone
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Rubber/elastomeric cleaning stick plus toothbrushing vs Toothbrushing alone
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Patient-used 5000 ppm F toothpaste, daily vs 1450 ppm F (conventional) toothpaste, daily
Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond) · At debond (end of orthodontic treatment)
Fluorides for preventing early tooth decay (demineralised lesions) during fixed brace treatment (2019) · Cochrane
SoF 3. Adverse effects: none of the trials reported this outcome.0 studiesNo studies
Dental cavity liner (e.g. calcium hydroxide, glass ionomer, resin-modified glass ionomer, or flowable composite) placed under the restoration vs No liner (resin-based composite bonded directly to the tooth)
Adverse events · Adults or children with a Class I or Class II resin-based composite restoration in a permanent posterior tooth
Dental cavity liners for Class I and Class II resin‐based composite restorations (2019) · Cochrane
None reported. No adverse events were reported in any of the included studies (0 studies contributed adverse-events data).0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Toothbrushing alone
Periodontitis (probing pocket depth) · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed periodontitis as an outcome.0 studiesNo studies
Professionally-applied 12,300 ppm F APF foam, every 2 months vs 0 ppm F placebo foam
Number of participants with more severe DLs (severity of DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond) · At debond (end of orthodontic treatment)
Fluorides for preventing early tooth decay (demineralised lesions) during fixed brace treatment (2019) · Cochrane
SoF 2. Number of participants with more severe DLs: none of the trials reported this outcome.0 studiesNo studies
Oral irrigation plus toothbrushing vs Flossing plus toothbrushing
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Wooden cleaning stick plus toothbrushing vs Flossing plus toothbrushing
Interproximal caries · Adults, 16 years and older (dentate)
Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling… (2019) · Cochrane
No included study assessed caries as an outcome.0 studiesNo studies
Professionally-applied 12,300 ppm F APF foam, every 2 months vs 0 ppm F placebo foam
Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond) · At debond (end of orthodontic treatment)
Fluorides for preventing early tooth decay (demineralised lesions) during fixed brace treatment (2019) · Cochrane
SoF 2. Adverse effects: none of the trials reported this outcome.0 studiesNo studies
Zinc oxide and eugenol (ZOE) vs Zinc oxide and propolis (ZOP)
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
3Mix (ciprofloxacin + metronidazole + minocycline) vs Ciprofloxacin + ornidazole + minocycline
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
Slow-release fluoride device (fluoride glass beads) vs Placebo or usual care (control)
Progression of caries lesion through enamel or into dentine · Children with high risk of dental decay
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
No evidence found0 studiesNo studies
Mineral trioxide aggregate (MTA) vs Gutta-percha / AH-Plus
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
Slow-release fluoride devices vs Alternative fluoride therapy (topical fluoride: toothpaste, mouthrinse, gel, or varnish)
Outcome NR · Children or adults
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
We found no studies comparing a slow-release fluoride device versus alternative fluoride therapy0 studiesNo studies
Zinc oxide and eugenol (ZOE) vs Ozonated sesame oil-zinc oxide (ZO)
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
Prenatal passive tobacco exposure (maternal smoking during pregnancy / in the womb) vs No passive tobacco exposure (non-exposed children)
Dental caries in permanent dentition (presence) · Children and adolescents (permanent dentition) · Prenatal exposure; permanent dentition
Association between passive tobacco exposure and caries in children and adolescents. A systematic review and… (2018)
no estimate extracted0 studiesNo studies
Slow-release fluoride device (fluoride glass beads) vs Placebo or usual care (control)
Dental pain due to decay · Children with high risk of dental decay
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
No evidence found0 studiesNo studies
Formocresol (FC) pulpotomy vs Calcium hydroxide pulpectomy
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Coser 2008 randomised 51 teeth; no data provided for any outcome0 studiesNo studies
Slow-release fluoride device (fluoride glass beads) vs Placebo or usual care (control)
Use of healthcare resources (cost effectiveness, time taken to fit, number of dental visits) · Children with high risk of dental decay
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
The study reported no data on use of healthcare resources0 studiesNo studies
Slow-release fluoride device (fluoride glass beads) vs Placebo or usual care (control)
Participant satisfaction · Children with high risk of dental decay
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
No RCT evidence found0 studiesNo studies
Zinc oxide and eugenol (ZOE) vs RC Fill
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
Endoflas (CH + ZOE + iodoform) vs RC Fill
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison but no extractable outcome data reported in this version0 studiesNo studies
Mineral trioxide aggregate (MTA) vs IRM (intermediate restorative material)
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Listed as a pulpectomy comparison; no extractable outcome data reported in this version0 studiesNo studies
ART using resin-modified glass ionomer cement (RM-GIC) vs Conventional treatment using RM-GIC
Participant experience · Older adults with root caries in permanent (mature) teeth (mean age 75 years)
Atraumatic restorative treatment versus conventional restorative treatment for managing dental caries (2017) · Cochrane
No studies reported on participant experience for this comparison.0 studiesNo studies
Metal-free implant-supported FDPs (zirconia-toughened alumina; In-Ceram Zirconia) vs Metal-free implant-supported FDPs (yttria-stabilized tetragonal zirconia; Denzir)
Periodontal/peri-implant status (secondary outcomes) · Adults (18 years or older) needing an implant-supported fixed dental prosthesis in the posterior region
Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane
No data were presented for any of the pre-specified secondary outcomes. Follow-up visits registered pocket depth, bleeding on probing and mobility but the data were not reported.0 studiesNo studies
Metal-free FDPs (lithium disilicate) vs Metal-ceramic FDPs
Aesthetic evaluation · Adults (18 years or older) needing a three-unit fixed dental prosthesis (FDP)
Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane
No data were presented with regard to aesthetics.0 studiesNo studies
New types of fissure sealant (e.g. ormocer-based) vs No sealant (control)
Outcome NR · Children and adolescents (general population, aged under 20 years)
Pit and fissure sealants for preventing dental decay in permanent teeth (2017) · Cochrane
No studies comparing new types of fissure sealants with no sealant were included.NRNo studies
ART using high-viscosity glass ionomer cement (H-GIC), hand instruments vs Conventional treatment using H-GIC (rotary instruments)
Costs (direct and indirect) · People with dental caries in primary teeth (mainly children)
Atraumatic restorative treatment versus conventional restorative treatment for managing dental caries (2017) · Cochrane
No studies reported on costs for this comparison.0 studiesNo studies
Fluoride supplementation (tablets, drops, lozenges or chewing gum) vs Placebo or no treatment
Decayed, missing and filled primary teeth (dmft) · Pregnant women (for preventing dental caries in the primary teeth of their children)
Fluoride supplementation (with tablets, drops, lozenges or chewing gum) in pregnant women for preventing… (2017) · Cochrane
no estimate extractedNRNo studies
ART using high-viscosity glass ionomer cement (H-GIC), hand instruments vs Conventional treatment using H-GIC (rotary instruments)
Adverse events · People with dental caries in primary teeth (mainly children)
Atraumatic restorative treatment versus conventional restorative treatment for managing dental caries (2017) · Cochrane
Adverse events: Not measured.0 studiesNo studies
ART using resin-modified glass ionomer cement (RM-GIC) vs Conventional treatment using RM-GIC
Costs (direct and indirect) · Older adults with root caries in permanent (mature) teeth (mean age 75 years)
Atraumatic restorative treatment versus conventional restorative treatment for managing dental caries (2017) · Cochrane
No studies reported on costs for this comparison.0 studiesNo studies
Fluoride supplementation (tablets, drops, lozenges or chewing gum) vs Placebo or no treatment
Missing primary surfaces (ms) · Pregnant women (for preventing dental caries in the primary teeth of their children)
Fluoride supplementation (with tablets, drops, lozenges or chewing gum) in pregnant women for preventing… (2017) · Cochrane
no estimate extractedNRNo studies
ART using composite resin vs Conventional treatment using composite resin
Pain · Children with dental caries in primary teeth (mean age 7 years)
Atraumatic restorative treatment versus conventional restorative treatment for managing dental caries (2017) · Cochrane
Pain: Not measured.0 studiesNo studies
Metal-free FDPs (zirconia ceramic) vs Metal-ceramic FDPs
Periodontal/peri-implant status (secondary outcomes) · Adults (18 years or older) needing a three-unit fixed dental prosthesis (FDP)
Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane
No data were presented for any of the pre-specified secondary outcomes. The trial registered pocket depth, bleeding on probing and mobility at follow-up visits but did not report the data.0 studiesNo studies