Hall Technique for carious primary molars outperformed standard restorations at 5 years

shutterstock_3275732-caries -9-10yr old

In the Hall Technique  carious primary molars are managed by sealing decay under preformed metal crowns without any caries removal, tooth preparation, or local anaesthesia.  The aim of the study was to compare the clinical/radiographic failure rates of the Hall Technique (HT) against General Dental Practitioners’ (GDPs) standard (control) restorations.

This split-mouth study involved 132 children, aged 3-10 yrs and GDPs in Scotland. Teeth were randomized to HT (intervention) or GDPs’ usual treatment (control). There were 264 study teeth with initial lesions, 42% of which were radiographically > half-way into dentin, and 67% of which had Class II restorations.  Annual clinical/radiographic follow-up data were recorded. Ninety-one patients (69%) had 48 months’ minimum follow-up.

Falure at 60 months are shown in the table.

[table id=8 /]

Overall, there were follow-up data for 130 patients (2-60 mos): ‘Major’ failures: HT, 3 (2%); control restorations, 22 (17%) (p = 0.000004; NNT 7); and ‘Minor’ failures, HT, 7 (5%); control restorations, 60 (46%) (p < 0.000001; NNT 3).

They concluded

Sealing in caries by the Hall Technique statistically, and clinically, significantly outperformed GDPs’ standard restorations in the long term.

Innes NP, Evans DJ, Stirrups DR. Sealing Caries in Primary Molars: Randomized Control Trial, 5-year Results. J Dent Res. 2011 Sep 15. [Epub ahead of print]PubMed PMID: 21921249

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Derek Richards

Derek Richards is a specialist in dental public health, Director of the Centre for Evidence-Based Dentistry and Specialist Advisor to the Scottish Dental Clinical Effectiveness Programme (SDCEP) Development Team. A former editor of the Evidence-Based Dentistry Journal and chief blogger for the Dental Elf website until December 2023. Derek has been involved with a wide range of evidence-based initiatives both nationally and internationally since 1994. Derek retired from the NHS in 2019 remaining as a part-time senior lecturer at Dundee Dental School until the end of 2023.

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