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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)

342 questions in 11 reviews · Pain control and patient management

current versions
No studies 158 · 46.2%Ungraded 53 · 15.5%Very low 87 · 25.4%Low 30 · 8.8%Moderate 10 · 2.9%High 4 · 1.2%

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
Acupressure at P6 point with sea band vs Sham (dummy) acupressure
Reduction in gagging (patient-reported) · 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
RR 2.70 [0.72, 10.14]1 study · 19 participantsVery low
Acupressure at P6 point with thumb 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
Acupuncture at P6 point with sedation vs Sham (dummy) acupuncture with sedation
Reduction in gagging (patient-reported – dichotomous) · 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
RR 1.09 [0.87, 1.37]1 study · 34 participantsVery low
Acupressure at P6 point with sea band vs Sham (dummy) acupressure
Completion of dental procedure · 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
RR 1.80 [0.63, 5.16]1 study · 19 participantsVery low
Acupressure at P6 point with sea band plus sedation vs Sham (dummy) acupressure with sedation
Reduction in gagging (patient-reported) · 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
RR 0.88 [0.67, 1.17]1 study · 21 participantsVery low
Acupressure at P6 point with thumb plus sedation vs Sham (dummy) acupressure with sedation
Completion of dental procedure · 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
RR 0.96 [0.84, 1.10]1 study · 39 participantsVery low
Acupressure at P6 point with device 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
Acupuncture at P6 point with sedation vs Sham (dummy) acupuncture 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
Presence or absence of gagging: none of the trials reported this outcome.0 studiesNo studies
Acupuncture at P6 point vs Sham acupuncture
Reduction in gagging (patient-reported – VAS) · 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
MD 0.86 [-1.13, 2.85]1 study · 33 participantsUngraded
Acupuncture at P6 point with sedation vs Sham (dummy) acupuncture 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
Adverse effects: none of the trials reported this outcome (Lu 2000 did not report adverse events).0 studiesNo studies
Acupressure at P6 point with thumb vs Sham (dummy) acupressure
Reduction in gagging (patient-reported) · 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
RR 0.92 [0.60, 1.41]1 study · 30 participantsVery low
2% mepivacaine, 1:20,000 levonordefrin vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia (soft tissue, simulated) · 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
MD 4.43 [-10.63, 19.48]2 studies · 458 participantsVery low
4% prilocaine plain 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, 1:100,000 epinephrine vs 2% mepivacaine, 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
Rectal midazolam vs A different sedative agent
Behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
Any behavioural score - Rectal midazolam versus (other sedatives): 90 (1); VERY LOW1 study · 90 participantsVery low
4% articaine, 1:100,000 epinephrine vs 2% mepivacaine, 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
3% mepivacaine plain vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia (soft tissue, self-reported; 100% success in all studies) · 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
'100% success' (lidocaine 1:100,000 vs 3% mepivacaine plain): infraorbital block - Berberich 2009 40/40 vs 40/40; IANB - Cohen 1993 27/27 vs 34/34, McLean 1993 30/30 vs 30/30. Both 100% successful.3 studies · 121 participantsUngraded
4% articaine, 1:200,000 epinephrine vs 4% articaine, 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: See comment (orphan study); 86 participants, 172 interventions (1 study). Not pooled/graded.1 study · 86 participantsUngraded
4% articaine, 1:200,000 epinephrine vs 4% articaine, 1:100,000 epinephrine
Duration of anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
MD -8.98 [-15.17, -2.79]5 studies · 162 participantsVery low
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
RR 0.93 [0.75, 1.17]2 studies · 60 participantsLow
0.5% bupivacaine, 1:200,000 epinephrine 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
2% mepivacaine, 1:100,000 epinephrine 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
4% articaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia, absence of pain (clinical testing of diseased pulps with irreversible pulpitis) · Participants of any age and gender undergoing dental procedures, and volunteers who took part in simulated scenario… · 10 minutes post-injection to end of clinical procedure
Injectable local anaesthetic agents for dental anaesthesia (2018) · Cochrane
RR 1.6 [1.1, 2.32]4 studies · 203 participantsLow
4% articaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Participants' experience of the procedures · 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
No data from the included studies were available.0 studiesNo studies
4% articaine plain vs 4% articaine, 1:200,000 epinephrine
Success of local anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
RR 0.58 [0.33, 1.01]2 studies · 134 participantsVery low
4% articaine, 1:100,000 epinephrine vs 2% mepivacaine, 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
Chloral hydrate vs Placebo (including no intervention)
Good or better behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
RR 1.33 [0.80, 2.22]1 study · 60 participantsVery low
Intravenous midazolam vs A different sedative agent
Behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
Any behavioural score - Intravenous midazolam versus (other sedatives): 70 (2); VERY LOW2 studies · 70 participantsVery low
2% mepivacaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia (soft tissue, self-reported; 100% success in all studies) · 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
'Other comparisons with 100% success': IANB - Allegretti 2016 22/22 vs 22/22; Visconti 2016 21/21 vs 21/21. Both formulations 100% successful; no meta-analysis (no difference).2 studies · 43 participantsUngraded
4% articaine, 1:200,000 epinephrine vs 0.5% bupivacaine, 1:200,000 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
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia (soft tissue, simulated) · 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
MD -33.95 [-48.05, -19.84]3 studies · 698 participantsVery low
4% articaine, 1:100,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Speed of onset of anaesthesia (soft tissue, simulated) · 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
MD -0.23 [-0.45, -0.01]6 studies · 637 participantsVery low
4% prilocaine, 1:200,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Speed of onset of anaesthesia (soft tissue, simulated) · 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
MD -0.01 [-0.14, 0.11]2 studies · 421 participantsLow
4% articaine, 1:100,000 epinephrine vs 2% mepivacaine, 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
4% articaine, 1:200,000 epinephrine vs 0.5% bupivacaine, 1:200,000 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
2% lidocaine, 1:50,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
RR 0.99 [0.88, 1.12]7 studies · 210 participantsVery low
4% articaine, 1:200,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Duration of anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
MD 10.33 [-22.08, 42.74]2 studies · 40 participantsVery low
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
4% prilocaine plain vs 2% lidocaine, 1:100,000 epinephrine
Speed of onset of anaesthesia (soft tissue, simulated) · 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
MD 0.02 [-0.10, 0.14]2 studies · 406 participantsLow
4% articaine plain vs 4% articaine, 1:100,000 epinephrine
Speed of onset of anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
MD 0.13 [-0.54, 0.80]2 studies · 100 participantsVery low
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
4% articaine, 1:100,000 epinephrine vs 2% mepivacaine, 1:100,000 epinephrine
Success of local anaesthesia (soft tissue, self-reported) · 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
RR 1.07 [0.73, 1.59]2 studies · 68 participantsVery low
4% articaine plain vs 4% articaine, 1:100,000 epinephrine
Success of local anaesthesia (pulpal, electric pulp tester; healthy pulps) · 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
RR 0.61 [0.38, 0.97]2 studies · 134 participantsVery low
Hydroxyzine vs Different dosage/timing of hydroxyzine
Behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
Any behavioural score - Hydroxyzine: 30 (1 study); VERY LOW. Insufficient evidence to determine whether any specific dose of hydroxyzine is effective.1 study · 30 participantsVery low
4% articaine, 1:200,000 epinephrine vs 0.5% bupivacaine, 1:200,000 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: See comment (orphan study; unclear whether data relate to just solution deposition; SDs not reported); 18 participants, 36 interventions (1 study). Not pooled/graded.1 study · 18 participantsUngraded
Meperidine (intramuscular) vs Placebo (including no intervention)
Good or better behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
RR 5.33 [1.45, 19.64]1 study · 60 participantsLow
2% lidocaine, 1:50,000 epinephrine vs 2% lidocaine, 1:100,000 epinephrine
Success of local anaesthesia (soft tissue, self-reported; 100% success in all studies) · 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
'100% success' (lidocaine 1:100,000 vs 1:50,000): infraorbital block - Berberich 2009 40/40 vs 40/40; mandibular BI - Dagher 1997 30/30, Yonchak 2001 40/40; IANB - Yared 1997 30/30, Wali 2010 30/30. Both 100% successful.5 studies · 170 participantsUngraded
Midazolam/ketamine vs Placebo (including no intervention)
Behaviour · Children and adolescents (0 to 16 years) needing dental treatment
Sedation of children undergoing dental treatment (2018) · Cochrane
Moreira 2013: 0.5 mg/kg midazolam + 3 mg/kg ketamine produced significantly better behaviour than placebo and oral midazolam (P=0.03); not included in meta-analysis / not GRADE-rated. Narrative.1 studyUngraded
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