Pulpotomy versus pulpectomy in the treatment of vital pulp exposure in primary incisors. A systematic review and meta-analysis.
Gadallah Lamia, Hamdy Mahmoud, El Bardissy Adel, et al. · F1000Research · 2018 · PubMed · doi:10.12688/f1000research.16142.3
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.
Review question
| Element | Planned (methods) | Found (results) |
|---|---|---|
| Population | Children with carious vital pulp exposure in primary incisors | Children aged 18-60 months with carious vital pulp exposure in primary incisors (4 RCTs; 3 meta-analyzed, 338 teeth) |
| Intervention | Pulpotomy (techniques with different medicaments) | Pulpotomy (formocresol; ferric sulfate; or ferric sulfate + mineral trioxide aggregate) |
| Comparison | Pulpectomy / root canal treatment (techniques with different medicaments) | Pulpectomy (zinc oxide eugenol; or vitapex / calcium hydroxide-iodoform paste) |
| Outcomes | Primary: clinical failure; radiological failure. Secondary clinical: pain, soft tissue pathology, pathological mobility, tooth survival. Secondary radiographic: pathological radiolucency, pathological root resorption, pulp canal obliteration | Clinical failure RR 2.69 (0.76-9.58); radiographic failure RR 0.79 (0.25-2.42), sensitivity RR 0.45 (0.25-0.83); pain RR 2.06 (0.31-13.8); soft tissue pathology RR 3.11 (0.54-17.7); pathological root resorption RR 1.5 (0.56-4.04); periapical radiolucency, mobility, tooth survival, pulp canal obliteration reported narratively (not pooled) |
| Study designs | Randomized controlled trials | 4 RCTs (Nguyen 2017, Howley 2012, Aminabadi 2008, Casas 2004); 3 in meta-analysis (Casas excluded for high risk of bias) |
| Timing | Not specified | Longest follow-up 15-24 months |
Search date: March 2018 (databases searched to 1 March 2018). Databases: PubMed; Cochrane Library; OpenGrey (grey literature); ClinicalTrials.gov (ongoing trials); hand-searching of reference lists
Questions and results
Pulpotomy vs Pulpectomy
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Pathological mobility Longest follow-up Pathological mobility was rare (one tooth in one of four trials) and was not pooled. Source: Results (Pathological mobility) · same question in other reviews | 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 studies | Ungraded |
Soft tissue pathology Longest follow-up No statistically significant difference in soft tissue pathology between pulpotomy and pulpectomy (RR 3.11, 95% CI 0.54 to 17.7; ungraded). Source: Results (Synthesis of results; Soft tissue pathology) · same question in other reviews | RR 3.11 [0.54, 17.7] | NR | Ungraded |
Clinical failure Longest follow-up: 18 to 24 months; 15 to 23 months in Howley et al. · Overall Pulpotomy may not differ from pulpectomy for clinical failure; no GRADE rating was reported. Source: Figure 3; Results: Synthesis of results · same question in other reviews | RR 2.63 [0.76, 9.58] | 2 studies · 264 participants | Ungraded |
Pathological root resorption Longest follow-up No statistically significant difference in pathological root resorption between pulpotomy and pulpectomy (RR 1.5, 95% CI 0.56 to 4.04; ungraded). Source: Results (Synthesis of results; Pathological root resorption) · same question in other reviews | RR 1.5 [0.56, 4.04] | 2 studies | Ungraded |
Tooth survival 18-24 months Tooth survival was reported narratively in two trials and was not pooled. Source: Results (Tooth survival) · same question in other reviews | 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 studies | Ungraded |
Pathological periapical radiolucency Longest follow-up Two trials reported periapical radiolucency but results were not pooled owing to considerable heterogeneity. Source: Results (Synthesis of results; Pathological radiolucency) · same question in other reviews | The results of two trials showed considerable statistical heterogeneity so no meta-analysis was performed for this outcome. | 2 studies | Ungraded |
Radiographic failure Longest follow-up (15-24 months) No statistically significant difference in radiographic failure between pulpotomy and pulpectomy in the main analysis (RR 0.79, 95% CI 0.25 to 2.42), with considerable heterogeneity (I2=76%; ungraded). Source: Figure 4; Results (Synthesis of results); Discussion · same question in other reviews | RR 0.79 [0.25, 2.42] | 3 studies · 338 participants | Ungraded |
Pain Longest follow-up No statistically significant difference in pain between pulpotomy and pulpectomy (RR 2.06, 95% CI 0.31 to 13.8; ungraded). Source: Results (Synthesis of results; Pain) · same question in other reviews | RR 2.06 [0.31, 13.8] | NR | Ungraded |
Pulp canal obliteration 23-24 months Pulp canal obliteration was reported narratively (mainly in the pulpotomy group) and was not pooled. Source: Results (Pulp canal obliteration) · same question in other reviews | 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 studies | Ungraded |
Radiographic failure Longest follow-up (18-23 months) · Sensitivity analysis excluding Aminabadi et al. (outlier) Excluding one outlying trial, pulpectomy had a significantly higher risk of radiographic failure than pulpotomy (RR 0.45, 95% CI 0.25 to 0.83; ungraded). Source: Table 8; Results (Synthesis of results); Abstract · same question in other reviews | RR 0.45 [0.25, 0.83] | 2 studies · 246 participants | Ungraded |
Comparison
| Outcome | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Overall failure | no estimate extracted | 2 studies | Ungraded |
AMSTAR 2 appraisal
Two independent extractors rated each item. Their ratings are shown side by side because they have not been reconciled yet. The overall rating follows Shea et al. 2017: one critical flaw gives Low, more than one gives Critically Low.
| Item | Extractor A | Extractor B | Agree |
|---|---|---|---|
| 1Research question includes PICO components | Yes | Yes | yes |
| 2Protocol established before the reviewcritical | No | No | yes |
| 3Choice of study designs explained | No | No | yes |
| 4Comprehensive literature searchcritical | Yes | Yes | yes |
| 5Study selection in duplicate | Yes | Yes | yes |
| 6Data extraction in duplicate | Yes | Yes | yes |
| 7List of excluded studies with reasonscritical | No | No | yes |
| 8Included studies described in detail | Yes | Yes | yes |
| 9Risk of bias assessed satisfactorilycritical | RCT: Yes · NRSI: N/A | NRSI: N/A · RCT: Yes | no |
| 10Funding of included studies reported | No | No | yes |
| 11Appropriate meta-analysis methodscritical | NRSI: N/A · RCT: Yes | RCT: Yes · NRSI: N/A | no |
| 12Impact of risk of bias on the pooled results | Yes | Yes | yes |
| 13Risk of bias accounted for in interpretationcritical | Yes | Yes | yes |
| 14Heterogeneity explained | Yes | Yes | yes |
| 15Publication bias investigatedcritical | No | No | yes |
| 16Conflicts of interest reported | Yes | No | no |
| Overall | Critically Low | Critically Low | yes |
Included primary studies 4
Open as a trial list| Study | Also included by | Outcomes it informs here | Trial PICO | Results |
|---|---|---|---|---|
| Aminabadi 2008 A clinical study of formocresol pulpotomy versus root canal therapy of vital primary incisors. PMID:18524271 | this review only | not stated | not extracted yet | not extracted yet |
| Casas 2004 Outcomes of vital primary incisor ferric sulfate pulpotomy and root canal therapy. PMID:14709254 | this review only | not stated | not extracted yet | not extracted yet |
| Howley 2012 Pulpotomy versus pulpectomy for carious vital primary incisors: randomized controlled trial. PMID:23211895 | this review only | not stated | not extracted yet | not extracted yet |
| Nguyen 2017 Comparison of Ferric Sulfate Combined Mineral Trioxide Aggregate Pulpotomy and Zinc Oxide Eugenol Pulpectomy of Primary Maxillary… PMID:28292339 | this review only | not stated | not extracted yet | not extracted yet |