Knowledge, Attitude and Practice (KAP) for Egyptian Pediatric Dentists Regarding Usage of Stainless Steel Crown on Primary Molars Using Hall Technique: A Cross Sectional Study

The first study on the Hall Technique was published in 2006 . It was a retrospective study which analysed the practice records of a general dental practitioner from Scotland, Dr. Norna Hall. Dr. Hall simplified the standard technique to restore primary teeth using preformed SSCs and used it with her patients. This retrospective study involved a total of 978 crowns fitted in 259 children using her novel technique (today known as the Hall Technique). Most crowns were placed when there was clinical evidence of a proximal carious lesion into dentine and marginal ridge breakdown. This study showed the Hall Technique to have comparable outcomes to those achieved with other more conventional restorations.

Since then, growing understanding that caries is essentially a biofilm driven disease rather than an infectious disease, explains why the Hall Technique, and other 'sealing in' carious lesion techniques, are successful. The intervening ten years has seen robust evidence from several randomised control trials that are either completed or underway. These have found the Hall Technique superior to comparator treatments, with success rates (no pain or infection) of 99% (UK study) and 100% (Germany) at one year, 98% and 93% over two years (UK and Germany) and 97% over five years (UK). The Hall Technique is now regarded as one of several biological management options for carious lesions in primary molars.