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Search review questions

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)

664 questions in 25 reviews · Endodontics and dental trauma

current versions
No studies 111 · 16.7%Ungraded 417 · 62.8%Very low 69 · 10.4%Low 50 · 7.5%Moderate 16 · 2.4%High 1 · 0.2%

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
Mineral trioxide aggregate (MTA) vs Super ethoxybenzoic acid (Super-EBA)
Success rate at 1 year · Patients needing retrograde filling in root canal therapy (orthograde root canal filling or retreatment not possible;… · 1 year
Materials for retrograde filling in root canal therapy (2021) · Cochrane
RR 1.03 [0.96, 1.10]1 studyVery low
Super ethoxybenzoic acid (Super-EBA) vs Intermediate restorative material (IRM)
Adverse events · Patients needing retrograde filling in root canal therapy (orthograde root canal filling or retreatment not possible;…
Materials for retrograde filling in root canal therapy (2021) · Cochrane
Adverse events: outcome was not assessed by the included studies0 studiesNo studies
Pulpotomy vs Pulpectomy
Tooth survival · Children with carious vital pulp exposure in primary incisors · 18-24 months
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
Survival rate 0.94 (95% CI 0.89 to 0.97) for pulpotomy and 0.97 for pulpectomy at 18 months (Nguyen et al.); 63% for pulpotomy and 85% for pulpectomy at 2 years (Casas et al.). Not pooled.2 studiesUngraded
Fixation and stabilisation (splint type/duration) vs Different splint, no splint, or different splinting duration
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
Hyperbaric oxygen (following replantation) vs Control
Tooth survival at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 1.21 [1.07, 1.36]1 study · 69 participantsVery low
Intervention NR
Clinical and radiographic success · MTA vs CH, 3 months (El-Meligy 2006)
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
no estimate extracted1 studyUngraded
Ledermix root canal medicament (day 0 to 10) vs Ultracal root canal medicament (day 7 to 10)
Adverse effects · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
Day 2012 used a formal methodology to identify and report adverse effects, with none identified.1 study · 22 participantsUngraded
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Platelet-rich fibrin (PRF)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 6, 12 and 24 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
Single RCT (Keswani 2014, 62 teeth): 100% clinical and radiographic success in both MTA and PRF at 6, 12 and 24 months (MTA 29/29, 27/27, 26/26; PRF 30/30, 29/29, 27/27); no difference between groups; not pooled1 study · 62 participantsUngraded
Thymosin alpha 1 (10-minute soak prior to replantation) vs Control (saline)
Tooth survival at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 1.46 [1.11, 1.91]1 study · 73 participantsVery low
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Calcium hydroxide (CH)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 6 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
RR 1.00 [0.94, 1.06]2 studies · 109 participantsUngraded
Extra-oral pulp extirpation at day 0 vs Intra-oral pulp extirpation at day 7
Adverse effects · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
Giannetti 2006 did not report this outcome; following email correspondence, authors reported no adverse effects were seen (uncertain whether formally assessed).1 studyUngraded
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Calcium-enriched mixture (CEM) cement
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 6 and 12 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
Single RCT (Nosrat 2012, 118 roots): 100% clinical and radiographic success in both MTA and CEM at 6 and 12 months (MTA 53/53 then 54/54 roots; CEM 55/55 then 57/57 roots); no statistical difference between groups at…1 study · 118 participantsUngraded
Ledermix root canal medicament (day 0 to 10) vs Ultracal root canal medicament (day 7 to 10)
Aesthetics (discolouration) at 12 months (patient level) · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 7.20 [1.03, 50.28]1 study · 22 participantsVery low
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
Systemic antibiotic (oral penicillin 500 mg) plus analgesic vs Placebo plus analgesic
Total number of ibuprofen tablets · Adults over 18 years presenting with a single tooth with a clinical diagnosis of irreversible pulpitis · 7 days
Antibiotic use for irreversible pulpitis (2019) · Cochrane
MD -0.40 [-4.23, 3.43]1 study · 40 participantsLow
Thymosin alpha 1 (10-minute soak prior to replantation) vs Control (saline)
Pain · People with avulsed and replanted permanent (front) teeth · day 1
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
A benefit in pain scores was reported on day 1 in favour of the thymosin alpha 1 group; no difference found on days 2 and 5.1 study · 73 participantsUngraded
Triple antibiotic paste (TAP) vs Abscess remedy (AR)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 3 to 24 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
Single RCT (Eppa 2018, 3-arm; 20 TAP and 20 AR teeth): TAP 100% (20/20) vs abscess remedy 80% (16/20) clinical and radiographic success; difference statistically significant at 3, 6, 9, 12, 18 and 24 months (P<0.05);…1 study · 40 participantsUngraded
Pulpotomy vs Pulpectomy
Pathological periapical radiolucency · Children with carious vital pulp exposure in primary incisors · Longest follow-up
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
The results of two trials showed considerable statistical heterogeneity so no meta-analysis was performed for this outcome.2 studiesUngraded
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
Pulpotomy vs Pulpectomy
Clinical failure · Children with carious vital pulp exposure in primary incisors · Longest follow-up: 18 to 24 months; 15 to 23 months in Howley et al., Overall
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 2.63 [0.76, 9.58]2 studies · 264 participantsUngraded
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Calcium hydroxide (CH)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 12 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
RR 1.04 [0.96, 1.13]2 studies · 109 participantsUngraded
Intervention NR
Calcific metamorphosis (adverse event) · MTA vs CH (El-Meligy 2006)
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
no estimate extracted1 studyUngraded
Hyperbaric oxygen (following replantation) vs Control
Adverse effects · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
Chen 2000 did not report this outcome; following email correspondence, authors reported no adverse effects were seen (uncertain whether formally assessed).1 studyUngraded
Pulpotomy vs Pulpectomy
Soft tissue pathology · Children with carious vital pulp exposure in primary incisors · Longest follow-up
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 3.11 [0.54, 17.7]NRUngraded
Pulpotomy vs Pulpectomy
Pathological mobility · Children with carious vital pulp exposure in primary incisors · Longest follow-up
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
Pathologic mobility was not reported for any tooth in three trials (Howley, Aminabadi, Casas); only one tooth with pathological mobility was reported by Nguyen et al. Not pooled.4 studiesUngraded
Systemic antibiotic (oral penicillin 500 mg) plus analgesic vs Placebo plus analgesic
Patient-reported pain intensity (sum of pain intensity difference (SPID) and sum of pain percussion intensity difference (SPPID)) · Adults over 18 years presenting with a single tooth with a clinical diagnosis of irreversible pulpitis · 7 days
Antibiotic use for irreversible pulpitis (2019) · Cochrane
Corresponding risk (Antibiotics): The in between-group differences (median +/- IQR) in SPID for the penicillin group were 6.0 +/- 10.5, and for placebo 6.0 +/- 9.5. The SPPID for the penicillin group was 3.5 +/- 7.5…1 study · 40 participantsLow
Thymosin alpha 1 (10-minute soak prior to replantation) vs Control (saline)
Adverse effects · People with avulsed and replanted permanent (front) teeth
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
Loo 2008 did not report this outcome; following email correspondence, authors reported no adverse effects were seen (uncertain whether formally assessed).1 studyUngraded
Pulpotomy vs Pulpectomy
Pathological root resorption · Children with carious vital pulp exposure in primary incisors · Longest follow-up
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 1.5 [0.56, 4.04]2 studiesUngraded
Ledermix root canal medicament (day 0 to 10) vs Ultracal root canal medicament (day 7 to 10)
Tooth survival at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
Tooth survival at 12 months: Not estimable (due to no events in either arm); 27 teeth in 22 patients (1 RCT). At 12 months, no teeth were lost. 1 tooth was lost at 16 months in the Ultracal group.1 study · 22 participantsVery low
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Abscess remedy (AR)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 3 to 24 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
Single RCT (Eppa 2018, 3-arm; 20 MTA and 20 AR teeth): MTA 100% (20/20) vs abscess remedy 80% (16/20) clinical and radiographic success; the 4 abscess-remedy failures occurred at 3 months; difference statistically…1 study · 40 participantsUngraded
Pulpotomy vs Pulpectomy
Radiographic failure · Children with carious vital pulp exposure in primary incisors · Longest follow-up (15-24 months)
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 0.79 [0.25, 2.42]3 studies · 338 participantsUngraded
Systemic antibiotic (oral penicillin 500 mg) plus analgesic vs Placebo plus analgesic
Total number of paracetamol (acetaminophen) with codeine (Tylenol) tablets · Adults over 18 years presenting with a single tooth with a clinical diagnosis of irreversible pulpitis · 7 days
Antibiotic use for irreversible pulpitis (2019) · Cochrane
MD 2.45 [-1.23, 6.13]1 study · 40 participantsLow
Mineral trioxide aggregate (MTA) pulpotomy dressing vs Triple antibiotic paste (TAP)
Clinical and radiographic success · Immature (young) permanent teeth with open apex and vital pulp exposed to dental caries or trauma, in children aged… · 1 to 24 months
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
Single RCT (Eppa 2018, 3-arm; 20 MTA and 20 TAP teeth): 100% clinical and radiographic success in both MTA and TAP at all follow-ups (1-24 months); no difference between groups; not pooled1 study · 40 participantsUngraded
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
Intervention NR
Marginal restoration discoloration (adverse event) · MTA vs CH (Ozgur 2017)
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
no estimate extracted1 studyUngraded
Extra-oral pulp extirpation at day 0 vs Intra-oral pulp extirpation at day 7
Radiographic resorption (proxy measure for periodontal healing) at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 1.35 [0.81, 2.24]1 study · 19 participantsVery low
Pulpotomy vs Pulpectomy
Pain · Children with carious vital pulp exposure in primary incisors · Longest follow-up
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 2.06 [0.31, 13.8]NRUngraded
Hyperbaric oxygen (following replantation) vs Control
Pulpal healing at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 1.25 [1.06, 1.48]1 study · 69 participantsVery low
Pulpotomy vs Pulpectomy
Pulp canal obliteration · Children with carious vital pulp exposure in primary incisors · 23-24 months
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
Pulp canal obliteration seen in 18 teeth (60%) in the pulpotomy group at 23 months (Howley et al.); none at 2 years (Aminabadi et al.); 3 teeth (25%) in the pulpotomy group at 2 years (Casas et al.). Not pooled.3 studiesUngraded
Intervention NR
Clinical and radiographic success · MTA vs CH, 18 and 24 months (Ozgur 2017)
Materials for pulpotomy in immature permanent teeth: a systematic review and meta-analysis. (2019)
no estimate extracted1 studyUngraded
Hyperbaric oxygen (following replantation) vs Control
Periodontal healing at 12 months · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 2.04 [1.52, 2.73]1 study · 69 participantsVery low
Thymosin alpha 1 (10-minute soak prior to replantation) vs Control (saline)
Periodontal healing at 48 months · People with avulsed and replanted permanent (front) teeth · 48 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 5.60 [2.22, 14.11]1 study · 73 participantsVery low
Systemic antibiotic (oral penicillin 500 mg) plus analgesic vs Placebo plus analgesic
Patient-reported pain relief · Adults over 18 years presenting with a single tooth with a clinical diagnosis of irreversible pulpitis
Antibiotic use for irreversible pulpitis (2019) · Cochrane
Patient-reported pain relief: Outcome not reported.NRNo studies
Pulpotomy vs Pulpectomy
Radiographic failure · Children with carious vital pulp exposure in primary incisors · Longest follow-up (18-23 months), Sensitivity analysis excluding Aminabadi et al. (outlier)
Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review… (2019)
RR 0.45 [0.25, 0.83]2 studies · 246 participantsUngraded
Ledermix root canal medicament (day 0 to 10) vs Ultracal root canal medicament (day 7 to 10)
Periodontal healing at 12 months (tooth level) · People with avulsed and replanted permanent (front) teeth · 12 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 1.67 [0.80, 3.49]1 study · 22 participantsVery low
Thymosin alpha 1 (10-minute soak prior to replantation) vs Control (saline)
Tooth survival at 48 months · People with avulsed and replanted permanent (front) teeth · 48 months
Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted (2019) · Cochrane
RR 3.58 [1.86, 6.89]1 study · 73 participantsVery low
Glutaraldehyde + zinc oxide and eugenol (ZOE) vs Full strength formocresol (FC)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 3 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.46 [0.04, 4.74]1 study · 48 participantsUngraded
Metapex (calcium hydroxide/iodoform) vs Endoflas chlorophenol free (Endoflas-CF)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.33 [0.35, 5.03]1 study · 32 participantsUngraded
Low-level laser therapy (LLLT) + calcium hydroxide vs Formocresol (FC)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 7.00 [0.39, 124.83]1 study · 30 participantsUngraded
Biodentine vs Calcium hydroxide (CH)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.33 [0.01, 7.72]1 study · 62 participantsUngraded