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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
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
Orthodontic treatment without extraction of permanent teeth (removable, fixed, or functional braces, or headgear) vs No treatment (or delayed treatment)
Cephalometric measurements (ANB change and front teeth inclination changes) · Children (80% aged <= 16 years) with a Class II division 2 malocclusion (deep bite and retroclined upper front teeth)
Orthodontic treatment for deep bite and retroclined upper front teeth in children (2018) · Cochrane
no estimate extracted0 studiesNo studies
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
Wax (fluid wax), two stage-two step selective pressure final impression vs Polysulfide rubber (elastomer)
Participant-reported oral health-related quality of life (OHIP-EDENT) · Completely edentulous people
Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane
Not measured0 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
Wax (fluid wax), two stage-two step selective pressure final impression vs Polysulfide rubber (elastomer)
Participant-reported quality of the denture · Completely edentulous people
Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane
Not measured0 studiesNo studies
3% prilocaine, 0.03 IU felypressin vs 2% lidocaine, 1:100,000 epinephrine
Adverse effects: pain on injection (solution deposition) · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Speed of onset of anaesthesia · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 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
SPT provided at one time interval vs SPT provided at a different time interval
Outcome NR · Adults treated for periodontitis and receiving supportive periodontal therapy (SPT)
Supportive periodontal therapy (SPT) for maintaining the dentition in adults treated for periodontitis (2018) · Cochrane
no estimate extracted0 studiesNo studies
Antifibrinolytic therapy - locally-applied tranexamic acid (TXA) mouthwash/solution (SoF eligibility: TXA or EACA; all included trials used topical TXA) vs Placebo (placebo solution/mouthwash)
Bleeding duration (minutes, all types of bleeding, minor and major) · People on continuous VKA treatment undergoing minor oral surgery or dental extractions (eligibility included DOACs and…
Antifibrinolytic therapy for preventing oral bleeding in people on anticoagulants undergoing minor oral… (2018) · Cochrane
no estimate extracted0 studiesNo studies
Supportive periodontal therapy (SPT) including mechanical debridement vs Monitoring only, or alternative interventions that do not include mechanical debridement
Outcome NR · Adults treated for periodontitis and receiving supportive periodontal therapy (SPT)
Supportive periodontal therapy (SPT) for maintaining the dentition in adults treated for periodontitis (2018) · Cochrane
no estimate extracted0 studiesNo studies
Autologous platelet concentrates (APC) + guided tissue regeneration (GTR) vs GTR (guided tissue regeneration) alone
Oral health-related quality of life · Patients affected by infrabony defects requiring surgical treatment, regardless of their age or gender
Autologous platelet concentrates for treating periodontal infrabony defects (2018) · Cochrane
No quantitative analysis regarding patients' quality of life was possible (no data).0 studiesNo studies
Orthodontic treatment without extraction of permanent teeth vs Orthodontic treatment involving extraction of permanent teeth
Side effects · Children (80% aged <= 16 years) with a Class II division 2 malocclusion (deep bite and retroclined upper front teeth)
Orthodontic treatment for deep bite and retroclined upper front teeth in children (2018) · Cochrane
no estimate extracted0 studiesNo studies
Routine scale and polish provided by a dentist vs Routine scale and polish provided by a dental care professional (dental therapist or hygienist)
Probing depth · Dentate adults without severe periodontitis, regularly attending for dental care in primary care (UK general dental…
Routine scale and polish for periodontal health in adults (2018) · Cochrane
no estimate extracted0 studiesNo studies
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Adverse effects: allergy to local anaesthetic · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
4% articaine, 1:200,000 epinephrine vs 4% articaine, 1:100,000 epinephrine
Duration of anaesthesia · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
4% articaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Adverse effects: paraesthesia following injection · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
Orthodontic treatment without extraction of permanent teeth vs Orthodontic treatment involving extraction of permanent teeth
Cephalometric measurements (ANB change and front teeth inclination changes) · Children (80% aged <= 16 years) with a Class II division 2 malocclusion (deep bite and retroclined upper front teeth)
Orthodontic treatment for deep bite and retroclined upper front teeth in children (2018) · Cochrane
no estimate extracted0 studiesNo studies
0.5% bupivacaine, 1:200,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Adverse effects: pain following injection · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
4% articaine, 1:200,000 epinephrine vs 0.5% bupivacaine, 1:200,000 epinephrine
Adverse effects: pain following injection · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
GTR rm + CAF vs SCTG + CAF
Aesthetic condition change related to patient's opinion · Adult patients with single (localised) recession-type defects (Miller Class I/II, at least 3 mm) · Short term (6 to 12 months)
Root coverage procedures for treating localised and multiple recession‐type defects (2018) · Cochrane
Aesthetic condition change related to patient's opinion: Not reported (SoF 5)0 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
4% articaine, 1:200,000 epinephrine vs 4% articaine, 1:100,000 epinephrine
Adverse effects: paraesthesia following injection · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
PRF + CAF vs SCTG + CAF
Aesthetic condition change related to patient's opinion · Adult patients with multiple recession-type defects (Miller Class I/II, at least 3 mm) · Short term (6 to 12 months)
Root coverage procedures for treating localised and multiple recession‐type defects (2018) · Cochrane
Aesthetic condition change was not reported for this comparison0 studiesNo studies
Ball (stud) attachment system vs Telescopic attachment system
Cost (treatment time and/or material costs) · Edentulous adults receiving mandibular implant overdentures (opposing conventional complete maxillary dentures)
Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws (2018) · Cochrane
no estimate extractedNRNo studies
Non-surgical technique vs No treatment
Outcome NR · People of any age with oro-antral communications, fistulae, or both caused by dental procedures
Interventions for treating oro‐antral communications and fistulae due to dental procedures (2018) · Cochrane
no estimate extracted0 studiesNo studies
Planned, regular routine scale and polish (6-monthly; 12-monthly parallel) vs No scheduled scale and polish treatment
Adverse events · Dentate adults without severe periodontitis, regularly attending for dental care in primary care (UK general dental…
Routine scale and polish for periodontal health in adults (2018) · Cochrane
no estimate extracted0 studiesNo studies
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Adverse effects: pain on injection (solution deposition) · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
ADMG + CAF vs SCTG + CAF
Aesthetic condition change related to patient's opinion · Adult patients with single (localised) recession-type defects (Miller Class I/II, at least 3 mm) · Short term (6 to 12 months)
Root coverage procedures for treating localised and multiple recession‐type defects (2018) · Cochrane
Aesthetic condition change related to patient's opinion: Not reported (SoF main comparison)0 studiesNo studies
Composite (chemical or light cured) vs Resin-modified glass ionomer cement
Outcome NR · Patients with fixed orthodontic appliances attached to their teeth · To end of appliance treatment
Adhesives for fixed orthodontic brackets (2018) · Cochrane
No included studies involved a comparison with resin-modified glass ionomer cement (a planned adhesive group). The authors recommended future randomised controlled trials involving resin-modified light cured glass…0 studiesNo studies
SPT performed by non-specialist clinicians (general dental practitioners under specialist prescription) vs SPT performed by specialists (specialist practice)
Tooth loss · Adults treated for periodontitis and receiving supportive periodontal therapy (SPT)
Supportive periodontal therapy (SPT) for maintaining the dentition in adults treated for periodontitis (2018) · Cochrane
Not measured0 studiesNo studies
Orthodontic treatment without extraction of permanent teeth (removable, fixed, or functional braces, or headgear) vs No treatment (or delayed treatment)
Gingival and TMJ symptoms · Children (80% aged <= 16 years) with a Class II division 2 malocclusion (deep bite and retroclined upper front teeth)
Orthodontic treatment for deep bite and retroclined upper front teeth in children (2018) · Cochrane
no estimate extracted0 studiesNo studies
Antifibrinolytic therapy - locally-applied tranexamic acid (TXA) mouthwash/solution (SoF eligibility: TXA or EACA; all included trials used topical TXA) vs Placebo (placebo solution/mouthwash)
Change in haemoglobin level from baseline · People on continuous VKA treatment undergoing minor oral surgery or dental extractions (eligibility included DOACs and…
Antifibrinolytic therapy for preventing oral bleeding in people on anticoagulants undergoing minor oral… (2018) · Cochrane
no estimate extracted0 studiesNo studies
Altered-cast impression technique (ACIP), polyether vs One-piece cast technique (OPC), polyether
Participant-reported oral health-related quality of life · Partially edentulous people requiring a tooth- and tissue-supported (distal-extension) removable partial denture
Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane
Not measured0 studiesNo studies
Autologous platelet concentrates (APC) + enamel matrix derivative (EMD) vs EMD (enamel matrix derivative) alone
Oral health-related quality of life · Patients affected by infrabony defects requiring surgical treatment, regardless of their age or gender
Autologous platelet concentrates for treating periodontal infrabony defects (2018) · Cochrane
No quantitative analysis regarding patients' quality of life was possible (no data).0 studiesNo studies
3% prilocaine, 0.03 IU felypressin vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
SHMP chewing gum vs Placebo
Adverse effects · Adults (>=18 years) undergoing home-based bleaching (including tetracycline- and smoking-stained teeth, any baseline…
Home‐based chemically‐induced whitening (bleaching) of teeth in adults (2018) · Cochrane
Not reportedNRNo studies
Orthodontic treatment without extraction of permanent teeth (removable, fixed, or functional braces, or headgear) vs No treatment (or delayed treatment)
Participant discomfort · Children (80% aged <= 16 years) with a Class II division 2 malocclusion (deep bite and retroclined upper front teeth)
Orthodontic treatment for deep bite and retroclined upper front teeth in children (2018) · Cochrane
no estimate extracted0 studiesNo studies
Antifibrinolytic agents (tranexamic acid (TXA) or epsilon aminocaproic acid (EACA)) vs Placebo, no intervention, or usual care
Outcome NR · People on continuous direct oral anticoagulant (DOAC) treatment undergoing oral or dental procedures
Antifibrinolytic therapy for preventing oral bleeding in people on anticoagulants undergoing minor oral… (2018) · Cochrane
no estimate extracted0 studiesNo studies
Late treatment (one-phase) with removable functional appliance vs No treatment
Incidence of incisal trauma · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II… · End of orthodontic treatment
Orthodontic treatment for prominent upper front teeth (Class II malocclusion) in children and adolescents (2018) · Cochrane
Incidence of incisal trauma: Not measuredNRNo studies
CP paint-on gel vs HP paint-on gel
Adverse effects · Adults (>=18 years) undergoing home-based bleaching (including tetracycline- and smoking-stained teeth, any baseline…
Home‐based chemically‐induced whitening (bleaching) of teeth in adults (2018) · Cochrane
Not reportedNRNo studies
Laterally positioned flap (LPF) vs Any other root coverage procedure
Outcome NR · Adult patients with single (localised) recession-type defects (Miller Class I/II, at least 3 mm)
Root coverage procedures for treating localised and multiple recession‐type defects (2018) · Cochrane
We did not find any RCTs evaluating laterally positioned flaps (LPF)0 studiesNo studies
4% articaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario…
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
SoF: Not measured.0 studiesNo studies
Tooth-supported removable partial denture: same impression material, different final-impression technique vs The same material with an alternative final-impression technique
Outcome NR · Partially edentulous people requiring a removable partial denture
Final‐impression techniques and materials for making complete and removable partial dentures (2018) · Cochrane
We did not find any trials for this comparison.0 studiesNo studies
Any surgical or non-surgical technique or material used for the treatment of post-extraction bleeding vs Another active intervention, placebo, or no treatment
Patient-reported outcomes related to pain or discomfort during the procedure · People of any age and either gender with post-extraction bleeding, regardless of type of teeth (anterior or posterior,…
Interventions for treating post‐extraction bleeding (2018) · Cochrane
No data are available as no RCTs have been conducted on interventions to treat post-extraction bleeding0 studiesNo studies
GTR rm + CAF vs GTR nrm + CAF
Aesthetic condition change related to patient's opinion · Adult patients with single (localised) recession-type defects (Miller Class I/II, at least 3 mm) · Short term (6 to 12 months)
Root coverage procedures for treating localised and multiple recession‐type defects (2018) · Cochrane
Aesthetic condition change was not reported for this comparison0 studiesNo studies
Autologous platelet concentrates (APC) + open flap debridement (OFD) + bone graft (BG) vs OFD + BG (open flap debridement + bone graft)
Oral health-related quality of life · Patients affected by infrabony defects requiring surgical treatment, regardless of their age or gender
Autologous platelet concentrates for treating periodontal infrabony defects (2018) · Cochrane
No quantitative analysis regarding patients' quality of life was possible (no data).0 studiesNo studies
Pedicled buccal fat pad flap (PBFPF) vs Buccal flap (BF)
Time required for healing · People of any age with oro-antral communications, fistulae, or both caused by dental procedures
Interventions for treating oro‐antral communications and fistulae due to dental procedures (2018) · Cochrane
no estimate extracted0 studiesNo studies