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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)

10,375 questions in 429 reviews · Oral Health

current versions
No studies 1,344 · 13%Ungraded 6,832 · 65.9%Very low 1,228 · 11.8%Low 613 · 5.9%Moderate 290 · 2.8%High 68 · 0.7%

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
High-viscosity glass-ionomer ART sealants vs No comparator
Sealant retention · Permanent teeth · 2 years, partially and fully retained high-viscosity glass-ionomer ART sealants in permanent dentitions, 2 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Survival percentage 82 [77, 86]2 studiesUngraded
Hypnosis vs Relaxation
Pain intensity (short term) · Adults over 18 years of age with chronic orofacial pain (temporomandibular disorder (TMD)) · Short term
Psychosocial interventions for the management of chronic orofacial pain (2011) · Cochrane
MD -1.84 [-3.26, -0.42]2 studies · 81 participantsUngraded
Artificial bone graft: InFuse (collagen matrix) impregnated with rhBMP-2 vs Traditional iliac crest cancellous bone graft
Number of participants discharged on the same day as surgery · Skeletally mature patients with unilateral cleft lip and palate and an alveolar cleft defect (>5 years; mean age 16.1…
Secondary bone grafting for alveolar cleft in children with cleft lip or cleft lip and palate (2011) · Cochrane
RR 201 study · 21 participantsUngraded
High-viscosity glass-ionomer ART sealants vs No comparator
Caries-free sealed pits and fissures · Permanent teeth with sealed pits and fissures · 5 years, permanent dentitions with high-viscosity glass-ionomer ART sealants, 5 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Caries-free percentage 90 [85, 94]2 studiesUngraded
Habit reversal vs Waiting list control
Pain intensity (short term / post-treatment) · Adults over 18 years of age with chronic orofacial pain (temporomandibular disorder (TMD)) · Short term (post-treatment)
Psychosocial interventions for the management of chronic orofacial pain (2011) · Cochrane
SMD -1.31 [-1.97, -0.65]1 studyUngraded
High-viscosity glass-ionomer ART sealants vs No comparator
Caries-free sealed pits and fissures · Permanent teeth with sealed pits and fissures · 2 years, permanent dentitions with high-viscosity glass-ionomer ART sealants, 2 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Caries-free percentage 100 [98, 100]3 studiesUngraded
Iseganan vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
no estimate extracted2 studiesUngraded
Xanthum gum-containing spray (Xialine) vs Placebo spray (base without xanthum)
Xerostomia (EORTC dry mouth score) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Jellema 2001 (crossover, n=30, post-radiotherapy): no statistically significant difference between Xialine (xanthum gum) spray and placebo on the EORTC dry mouth score (Analysis 1.2). van der Reijden 1996: xanthum…2 studies · 30 participantsUngraded
ART sealant using high-viscosity glass ionomer (press-finger technique) vs None (single-arm survival proportion; no comparator)
Sealant retention (partially and fully retained) · Pits and fissures of permanent (posterior) teeth · 6 years, partially and fully retained high-viscosity glass-ionomer ART sealants in permanent dentitions, 6 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Proportion 0.59 [0.51, 0.67]1 studyUngraded
Flossing plus toothbrushing (self-performed; manual or automated floss) vs Toothbrushing alone (with or without a negative-control/placebo rinse)
Bad breath (halitosis) · Dentate adults aged 16 years or older (excluding orthodontic patients and those with severe periodontal disease)
Flossing for the management of periodontal diseases and dental caries in adults (2011) · Cochrane
Not reported. No included study measured halitosis; the review notes it may be important to measure in future trials.0 studiesNo studies
Arthroscopy vs Open surgery
Clinical evaluations 12 months after surgery (6 pooled clinical signs) · Adults (older than 18 years) with a temporomandibular disorder (synovitis, disc displacement with or without… · 12 months
Arthroscopy for temporomandibular disorders (2011) · Cochrane
Peto OR 1.0 [0.45, 2.21]2 studies · 240 participantsUngraded
High-viscosity glass-ionomer ART sealants vs No comparator
Sealant retention · Permanent teeth · 5 years, partially and fully retained high-viscosity glass-ionomer ART sealants in permanent dentitions, 5 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Survival percentage 63 [56, 70]1 studyUngraded
Traditional iliac bone graft plus fibrin glue vs Traditional iliac bone graft alone
Radiographic assessment: coronal bone density (Hounsfield units) · Patients aged 7 to 16 years with unilateral or bilateral cleft lip and palate (alveolar cleft) · At least 3 months
Secondary bone grafting for alveolar cleft in children with cleft lip or cleft lip and palate (2011) · Cochrane
MD 150.89 [3.45, 298.33]1 study · 27 participantsUngraded
Polaprezinc vs Azulene
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.09 [0.01, 0.65]1 study · 31 participantsUngraded
Carboxymethylcellulose (CMC) spray vs Salinum linseed oil spray
Patient preference · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Statistically significant preference for linseed spray: of 17 with a preference, more favoured linseed (Chi2 4.77, df=1; P = 0.029); 3 expressed no preference.1 study · 20 participantsUngraded
CMC spray / aloe vera gel / canola oil spray vs Mucin spray (and between each other)
Xerostomia (mean xerostomia score) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Momm 2005 (crossover, n=123): all four treatments significantly reduced dryness vs baseline (mean xerostomia score, scale 1 to 6: baseline 4.5 +/- 0.11; post-treatment aloe vera 3.7 +/- 0.11, CMC 3.8 +/- 0.12, canola…1 study · 123 participantsUngraded
Honey vs No treatment
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.26 [0.13, 0.52]3 studiesUngraded
Oxygenated glycerol triester (OGT) spray vs Saliveeze (aqueous electrolyte) spray
Oral health (overall mouth condition) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Mouly 2007b: overall mouth condition improved in both groups; no significant differences between the treatment groups.1 studyUngraded
Hypnosis vs Relaxation
Depression (short term) · Adults over 18 years of age with chronic orofacial pain (temporomandibular disorder (TMD)) · Short term
Psychosocial interventions for the management of chronic orofacial pain (2011) · Cochrane
SMD -0.49 [-0.93, -0.04]2 studies · 81 participantsUngraded
Antibiotic pastille or paste (PTA) vs Placebo
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.87 [0.78, 0.96]2 studies · 356 participantsUngraded
Fluoride supplements (tablets, drops, lozenges or chewing gums) vs No fluoride supplement (placebo or no treatment)
Fluorosis (adverse effect; % of children with fluorotic teeth, questionable to severe) · Children and adolescents (aged 16 years or less at baseline) · 55 months
Fluoride supplements (tablets, drops, lozenges or chewing gums) for preventing dental caries in children (2011) · Cochrane
% of children with fluorotic teeth (questionable to severe), follow-up 55 months. Assumed risk 32/212 = 15%; corresponding risk 40/202 = 20% (APF once a day) and 43/197 = 22% (APF twice a day). Relative effect: Not…1 study · 611 participantsVery low
Epidermal growth factor vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.67 [0.45, 0.99]1 study · 103 participantsUngraded
Chewing gum vs No chewing gum
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.87 [0.71, 1.07]1 study · 140 participantsUngraded
Dentirol chewing gum (xylitol) vs Profylin lozenge (xylitol/sorbitol + CMC)
Xerostomia (dry mouth relief) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Risheim 1993 (crossover, high risk of bias, n=18, rheumatic patients): both products gave good subjective relief of dry mouth in slightly less than one third of participants; crossover design not accounted for, no…1 study · 18 participantsUngraded
High-viscosity glass-ionomer ART sealants vs No comparator
Sealant retention · Permanent teeth · 4 years, partially and fully retained high-viscosity glass-ionomer ART sealants in permanent dentitions, 4 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Survival percentage 68 [61, 75]1 studyUngraded
Oxygenated glycerol triester (OGT) spray vs Saliveeze (aqueous electrolyte) spray
Patient satisfaction · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Mouly 2007b: patient satisfaction measured by VAS for global acceptability (Analysis 3.4); no significant difference between treatments for overall oral condition. Satisfaction for taste favoured OGT (mean VAS…1 studyUngraded
Psychosocial interventions (cognitive behavioural therapy, biofeedback, combination CBT/biofeedback, physical self-regulation/posture self-control) vs Usual care (conservative treatment: education, counselling, intraoral flat plane appliance)
Depression (long term) · Adults over 18 years of age with chronic orofacial pain (temporomandibular disorder (TMD)) · Long term (more than 3 months)
Psychosocial interventions for the management of chronic orofacial pain (2011) · Cochrane
SMD -0.35 [-0.54, -0.16]6 studies · 455 participantsUngraded
High-viscosity glass-ionomer ART sealants vs No comparator
Caries-free sealed pits and fissures · Permanent teeth with sealed pits and fissures · 1 year, permanent dentitions with high-viscosity glass-ionomer ART sealants, 1 year
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Caries-free percentage 100 [99, 100]4 studiesUngraded
CMC/sorbitol pre-moistened swabs vs Lemon glycerin swabs
Xerostomia (oral dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Poland 1987 (crossover, high risk of bias, n=20): CMC/sorbitol reported superior to lemon glycerin for reducing oral dryness; brief report, incomplete data, period effect noted; not usable for meta-analysis.1 study · 20 participantsUngraded
Flossing plus toothbrushing (self-performed; manual or automated floss) vs Toothbrushing alone (with or without a negative-control/placebo rinse)
Calculus · Dentate adults aged 16 years or older (excluding orthodontic patients and those with severe periodontal disease)
Flossing for the management of periodontal diseases and dental caries in adults (2011) · Cochrane
Not estimable (0 studies). See comment: No included study assessed calculus as an outcome.0 studiesNo studies
Oral care protocol vs No treatment/usual care
Oral mucositis (severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.84 [0.69, 1.04]1 study · 150 participantsUngraded
Cryotherapy (ice chips) 30 minutes vs Cryotherapy (ice chips) 60 minutes
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.89 [0.62, 1.29]1 study · 178 participantsUngraded
Hypnosis vs Relaxation
Anxiety (short term) · Adults over 18 years of age with chronic orofacial pain (temporomandibular disorder (TMD)) · Short term
Psychosocial interventions for the management of chronic orofacial pain (2011) · Cochrane
SMD -0.42 [-0.86, 0.02]2 studies · 81 participantsUngraded
Pentoxifylline vs No treatment
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 1 [0.68, 1.47]1 study · 140 participantsUngraded
Glutamine vs Placebo/usual care
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.88 [0.69, 1.12]5 studiesUngraded
Squeezable (modified) feeding bottle vs Rigid feeding bottle
Quality of life and parental satisfaction (crying, feeding, sleeping, playing time; 24-hour parental log) · Infants up to 6 months (from term) born with cleft lip, cleft palate or cleft lip and palate (Pierre Robin sequence or… · up to 12 months
Feeding interventions for growth and development in infants with cleft lip, cleft palate or cleft lip and… (2011) · Cochrane
Quality of life and adverse events (crying, feeding, sleeping and playing time, 24-hour parental log; Shaw 1999): no statistically significant differences between bottle types. Parental satisfaction also reported.1 study · 101 participantsUngraded
Mucin-containing lozenge vs Placebo lozenge
Xerostomia (VAS mouth dryness) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Gravenmade 1993 (crossover, high risk of bias, n=42, Sjogren's syndrome): no statistically significant difference between mucin lozenge and placebo for mouth dryness on a VAS (Analysis 1.2).1 study · 42 participantsUngraded
Multiple-surface ART restoration using high-viscosity glass ionomer vs None (single-arm survival proportion; no comparator)
Restoration survival · Permanent posterior teeth with multiple-surface cavities · 2 years, multiple-surface permanent posterior teeth, 2 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Proportion 0.41 [0.18, 0.67]1 studyUngraded
ART sealant using high-viscosity glass ionomer (press-finger technique) vs None (single-arm survival proportion; no comparator)
Caries-free sealed pits and fissures · Pits and fissures of permanent (posterior) teeth · 3 years, permanent dentitions with high-viscosity glass-ionomer ART sealants, 3 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Proportion 0.97 [0.96, 0.98]3 studiesUngraded
Indomethacin vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 1 [0.82, 1.23]1 study · 18 participantsUngraded
Oral care protocol vs No treatment/usual care
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.62 [0.43, 0.91]1 study · 30 participantsUngraded
Flossing plus toothbrushing (self-performed; manual or automated floss) vs Toothbrushing alone (with or without a negative-control/placebo rinse)
Quality of life · Dentate adults aged 16 years or older (excluding orthodontic patients and those with severe periodontal disease)
Flossing for the management of periodontal diseases and dental caries in adults (2011) · Cochrane
Not estimable (0 studies). See comment: No included study assessed quality of life as an outcome.0 studiesNo studies
Cryotherapy (ice chips) vs No treatment
Oral mucositis (any severity) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.74 [0.57, 0.95]5 studies · 472 participantsLow
Fluoride supplements (tablets, drops, lozenges or chewing gums) vs Other preventive measures (xylitol lozenges)
Caries increment on permanent tooth surfaces (DMFS, approximal surfaces) · Children and adolescents (aged 16 years or less at baseline) · 24-36 months
Fluoride supplements (tablets, drops, lozenges or chewing gums) for preventing dental caries in children (2011) · Cochrane
PF 0.00 [-0.59, 0.59]1 study · 115 participantsLow
Arthroscopy vs Nonsurgical treatment
Pain after 6 months · Adults (older than 18 years) with a temporomandibular disorder (synovitis, disc displacement with or without… · 6 months
Arthroscopy for temporomandibular disorders (2011) · Cochrane
SMD 0.004 [-0.46, 0.55]2 studies · 62 participantsUngraded
ART sealant using high-viscosity glass ionomer (press-finger technique) vs None (single-arm survival proportion; no comparator)
Caries-free sealed pits and fissures · Pits and fissures of permanent (posterior) teeth · 5 years, permanent dentitions with high-viscosity glass-ionomer ART sealants, 5 years
Survival of atraumatic restorative treatment (ART) sealants and restorations: a meta-analysis. (2011)
Proportion 0.90 [0.85, 0.94]2 studiesUngraded
Carbopol (polyacrylic acid/acetate) spray vs Placebo spray
Patient preference · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Patient preference for active sprays vs placebo nearly attained significance (Chi2 7.259, df=3; P = 0.064); 15/43 participants expressed no desire to continue any spray after the trial.1 study · 43 participantsUngraded
Arthroscopy vs Open surgery
Pain (VAS/SSI) after 12 months · Adults (older than 18 years) with a temporomandibular disorder (synovitis, disc displacement with or without… · 12 months
Arthroscopy for temporomandibular disorders (2011) · Cochrane
SMD 0.45 [0.01, 0.89]3 studies · 81 participantsUngraded
Physostigmine gel (1.8 mg) vs Placebo gel
Salivary flow (saliva secretion) · Adults seeking treatment for the symptom of dry mouth (xerostomia) due to any cause (e.g. medication, Sjogren's…
Interventions for the management of dry mouth: topical therapies (2011) · Cochrane
Approximately fivefold increase in saliva secretion; mean AUC salivary volume 43.4 +/- 9.4 (physostigmine) vs 8.3 +/- 6.6 (placebo), P < 0.001. Adverse effects: 8 mild gastrointestinal upsets, 1 sweating.1 study · 17 participantsUngraded
Prednisone vs Placebo
Oral mucositis (moderate to severe) · Patients with cancer receiving radiotherapy, chemotherapy or targeted therapies · Median 28 days
Interventions for preventing oral mucositis for patients with cancer receiving treatment (2011) · Cochrane
RR 0.71 [0.47, 1.07]1 study · 66 participantsUngraded