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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)

1,344 questions in 217 reviews · Oral Health

current versions
No studies 1,344 · 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
1400/250 ppm F (amine F/SnF2) toothpaste + mouthrinse, daily vs 1400/250 ppm F (NaF) toothpaste + 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
Additional SoF Table 2. Number of participants with more severe DLs: none of the trials reported this outcome.0 studiesNo studies
1400/250 ppm F (amine F/SnF2) toothpaste + mouthrinse, daily vs 1400/250 ppm F (NaF) toothpaste + 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
Additional SoF Table 2. Adverse effects: none of the trials reported this outcome.0 studiesNo studies
Antifibrinolytic therapy (tranexamic acid or epsilon aminocaproic acid) vs Placebo, no intervention or usual care (with or without placebo)
Outcome NR · People with Von Willebrand disease undergoing minor oral surgery or dental extractions
Antifibrinolytic therapy for preventing oral bleeding in patients with haemophilia or Von Willebrand disease… (2019) · Cochrane
No randomised or quasi-randomised controlled trials in people with Von Willebrand disease met the inclusion criteria; no eligible VWD trials were identified.0 studiesNo studies
0.6% eucalyptus chewing gum vs Placebo chewing gum
Patient-reported OLT score · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 4 weeks
Interventions for managing halitosis (2019) · Cochrane
Patient-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.0 studiesNo studies
Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported adverse effects.0 studiesNo studies
Acupressure at P6 point with sea band vs Sham (dummy) acupressure
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported adverse effects.0 studiesNo studies
1450 ppm F toothpaste vs 440 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
Laser enamel preparation vs Enameloplasty
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
1000 mg champignon extract vs Placebo
Adverse events · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 2 weeks
Interventions for managing halitosis (2019) · Cochrane
Adverse events: listed in the Summary of findings table but no data reported. No data were reported for adverse events.0 studiesNo studies
Intraoral fluoride-releasing glass bead device attached to the brace vs 250 ppm F (daily) fluoride mouthrinse
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
Additional SoF Table 3. Number of participants with more severe DLs: none of the trials reported this outcome.0 studiesNo studies
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
Mechanical tongue cleaning (tongue scraper) vs No tongue cleaning
Quality of life · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced…
Interventions for managing halitosis (2019) · Cochrane
Quality of life was a prespecified secondary outcome. None of the 44 included studies in the review (across all comparisons) reported quality-of-life data (review-wide evidence gap).0 studiesNo studies
Treatment with antibiotics vs No antibiotics, placebo, or different types of antibiotics
Outcome NR · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
no estimate extracted0 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
Laser (low-level laser) at P6 point vs Control (sham/dummy laser)
Completion of dental treatment · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
Completion of dental treatment: none of the trials reported this outcome.0 studiesNo studies
Hinokitiol gel vs Placebo gel
Patient-reported OLT score · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 4 weeks
Interventions for managing halitosis (2019) · Cochrane
Patient-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.0 studiesNo studies
Systemic antibiotic (oral penicillin 500 mg) plus analgesic vs Placebo plus analgesic
Number of adverse events · Adults over 18 years presenting with a single tooth with a clinical diagnosis of irreversible pulpitis
Antibiotic use for irreversible pulpitis (2019) · Cochrane
Number of adverse events: Outcome not reported.NRNo 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
Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported presence or absence of gagging.0 studiesNo studies
Chlorhexidine + zinc acetate mouthwash vs Placebo mouthwash
Patient-reported OLT score · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 3 months
Interventions for managing halitosis (2019) · Cochrane
Patient-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.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
Antifibrinolytic therapy (tranexamic acid or epsilon aminocaproic acid) vs Placebo, no intervention or usual care (with or without placebo)
Bleeding duration · People with haemophilia (A or B) undergoing minor oral surgery or dental extractions
Antifibrinolytic therapy for preventing oral bleeding in patients with haemophilia or Von Willebrand disease… (2019) · Cochrane
This outcome was not reported in either of the trials.0 studiesNo studies
Acupressure at P6 point with device vs Sham (dummy) acupressure
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported adverse effects.0 studiesNo studies
Acupressure at P6 point with device plus sedation vs Sham (dummy) acupressure with sedation
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported adverse effects.0 studiesNo studies
Acupressure at P6 point with thumb plus sedation vs Sham (dummy) acupressure with sedation
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported presence or absence of gagging.0 studiesNo studies
Acupressure at P6 point with device plus sedation vs Sham (dummy) acupressure with sedation
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported presence or absence of gagging.0 studiesNo studies
1000 mg champignon extract vs Placebo
Dentist-reported OLT score · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 2 weeks
Interventions for managing halitosis (2019) · Cochrane
Dentist-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for dentist-reported OLT score.0 studiesNo studies
Laser (low-level laser) at P6 point vs Control (sham/dummy laser)
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
Adverse effects: none of the trials reported adverse effects.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
Acupressure at P6 point with thumb plus sedation vs Sham (dummy) acupressure with sedation
Adverse effects · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported 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
Antifibrinolytic therapy (tranexamic acid or epsilon aminocaproic acid) vs Placebo, no intervention or usual care (with or without placebo)
Any postoperative complication except bleeding (such as wound infection) · People with haemophilia (A or B) undergoing minor oral surgery or dental extractions
Antifibrinolytic therapy for preventing oral bleeding in patients with haemophilia or Von Willebrand disease… (2019) · Cochrane
This outcome was not reported in either of the trials.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
Toothbrushing + 0.075% cetylpyridinium chloride mouthwash vs Toothbrushing
Patient-reported OLT score · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 3 weeks
Interventions for managing halitosis (2019) · Cochrane
Patient-reported OLT score: listed in the Summary of findings table but no data reported. No data were reported for patient-reported OLT score.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
Acupressure at P6 point with thumb vs Sham (dummy) acupressure
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported presence or absence of gagging.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
Acupressure at P6 point with sea band vs Sham (dummy) acupressure
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
None of the trials comparing acupressure with thumb, device or sea band to sham acupressure with or without sedation reported presence or absence of gagging.0 studiesNo studies
0.6% eucalyptus chewing gum vs Placebo chewing gum
Adverse events · Adolescents and adults aged over 16 years with clinical or self-assessed halitosis of oral origin; excluding induced… · mean 4 weeks
Interventions for managing halitosis (2019) · Cochrane
Adverse events: listed in the Summary of findings table but no data reported. No data were reported for adverse events.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
Storage of the tooth prior to replantation (storage medium) vs Different storage medium or dry storage
Outcome NR · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
no estimate extracted0 studiesNo studies
Acupuncture at P6 point vs Sham acupuncture
Presence or absence of gagging · People (older than four years) classified as having gagging that interfered with dental treatment; included trials…
Management of gag reflex for patients undergoing dental treatment (2019) · Cochrane
Presence or absence of gagging: none of the trials reported this 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