Trial reportBMC oral health2026
Two-year outcomes of hall technique and modified hall technique in deep carious lesions of primary molars: a randomized clinical trial.
Trial report in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05220865 (Hall Technique or Modified Hall Technique of Deep Carious Lesions in Primary Molars), which is not on this map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Hall Technique or Modified Hall Technique of Deep Carious Lesions in Primary Molars: A Randomized Clinical Trial
Who cites it
2 citing papers in PubMed.
- Marginal Fit, Internal Adaptation, and Microleakage of Preformed Metal Crowns: Impact of Three Preparation Techniques and Three Ion-Releasing Cements.Children (Basel, Switzerland) · 2026Article
- Microstructural Analysis of Carious Lesion Progression Beneath Hall Technique and Conventional Stainless-Steel Crowns in Children.International journal of paediatric dentistry · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
Abstract
backgroundThe Hall Technique (HT) is a minimally invasive restorative approach for managing carious primary molars, in which stainless steel crowns (SSCs) are cemented over the tooth without local anaesthesia, tooth preparation, or carious tissue removal. The aim of this study was to compare the success of the HT and the modified HT in primary molars with deep dentine caries over a 24-month follow-up period.
methodsThis prospective longitudinal randomized controlled study included 268 primary molars with deep carious lesions. The teeth were randomly allocated into 2 study arms: HT (n = 134) and modified HT (n = 134). In the modified HT group, unlike those in the HT group, the necrotic and contaminated outermost layer of the carious lesion was removed with an excavator to soft dentine. Clinical and radiographic follow-ups were performed by a blinded evaluator after 3, 6, 12, 18, and 24 months. In addition, the 24-month treatment outcome was evaluated according to tooth group, surfaces affected by caries, preoperative pain, and SSC fit. Categorical variables were compared using Pearson chi-square, Fisher's exact, and Fisher-Freeman-Halton tests. Success and failure rates were compared with the two-proportion z test. A p-value < 0.05 was considered statistically significant.
resultsAt the 24-month follow-up, there was no statistically significant difference in treatment success rates between the HT group (86.6%) and the modified HT group (92.8%) (p = 0.121). Within the HT group, teeth with insufficient SSC fit showed a significantly higher rate of major failures and a significantly lower success rate compared to those with sufficient fit (p = 0.005). In the modified HT group, first primary molars exhibited a significantly higher rate of minor failures, whereas second primary molars demonstrated a significantly higher treatment success rate (p = 0.034).
conclusionsBoth the HT and the modified HT exhibited high success rates over a 24-month follow-up period, with no statistically significant difference observed between the two methods. In the HT group, proper SSC fit is important for reducing failure rates.
trial registrationClinical trial registration number NCT05220865, date of registration 22.01.2022.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.