Abstract
Objectives
The overall pooled success rate of the Hall Technique (HT) in various types of studies has not been investigated. The present study aims to evaluate the success rate of HT to restore carious primary molars.
Methods
A systematic search was carried out in the MEDLINE/PubMed, Excerpta Medica Database (EMBASE), Scopus, Web of Science, and LIVIVO electronic databases, as well as the ProQuest database for grey literature review. A search was carried out up to September 2023 for studies meeting the eligibility criteria: Randomised Clinical Trials (RCTs) and Non-Randomised Studies of Interventions (NRSIs); children with primary molars treated using HT; and reporting success for at least 1-month post-treatment. Single-arm meta-analysis assessed the pooled proportion (95% CI) of HT success rates. Risk of bias and certainty of evidence using the GRADE approach were assessed.
Results
Searching identified 665 studies, with 25 (15 RCTs and 10 NRSIs) meeting the eligibility criteria. In meta-analyses of RCTs, the pooled proportion success rate was 98% (95% CI: 97–99%) at 12-month follow-up. For NRSIs, the pooled proportion success rate was 95% (95% CI: 91–100%) up to 89 months.
Conclusions
HT presents a high success rate, even though the primary studies had “low” to “high” risk of bias and demonstrated “moderate” to “low” certainty of evidence. One of the main reasons for downgrading was related to blinding, which was generally unfeasible due to visibly different restorative materials. The systematic review protocol was registered in PROSPERO (ID: CRD42021204415).
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Data availability
The datasets used and/or analysed during the current study are available in the Appendix.
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Funding
This study was partially supported by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Coordination for the Improvement of Higher Education Personnel) (CAPES). Conselho Nacional de Desenvolvimento Científico e Tecnológico (National Council for Scientific and Technological Development) (CNPq) provides scholarship awards for research productivity in Brazil to Dr. Braga, and Dr. Raggio. The funders had no role in the design and conduct of the study; collection, management, analysis and interpretation of the data; preparation, review or approval of the manuscript; or decision to submit the manuscript for publication.
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DPR, TKT and NPI were involved in conception and design of the study. DPR, CLG and GSS were involved in data acquisition. TKT, NPI, TG, MMB, MPA and DPR were involved in data analysis and interpretation. TKT, NPI, WA and DPR drafted the manuscript. TKT, NPI, CLG, GSS, TG, MMB, MPA, JJ, WA and DPR revised and gave final approval of the manuscript.
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Tedesco, T.K., Innes, N.P., Gallegos, C.L. et al. Success rate of Hall Technique for restoring carious primary molars - systematic review and meta-analysis. Evid Based Dent 26, 65–66 (2025). https://doi.org/10.1038/s41432-024-01044-0
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DOI: https://doi.org/10.1038/s41432-024-01044-0
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