Occlusal Compensation after the Hall Technique
Research type
Research Study
Full title
Occlusal compensation after the placement of preformed metal crowns using the Hall Technique for carious primary molars; where it occurs and clinical implications.
IRAS ID
255530
Contact name
Nicola Innes
Contact email
Sponsor organisation
University of Dundee
Duration of Study in the UK
1 years, 0 months, 0 days
Research summary
This is an observational study of children already undergoing a treatment (fitting a Hall Technique Preformed Metal Crown [HTPMC] over a decayed tooth). There is no intervention but we will take additional measurements to record changes following on from a pilot trial.\nHTPMCs are used to manage tooth decay in baby back teeth. The preformed crown is pushed over the tooth with no drilling to prepare the tooth shape for the crown. Although the correct size of crown is chosen, the crown sits on top of the tooth and increases the tooth’s height in the bite. The child’s bite is high for a few days, weeks or possibly months.\nThis study investigates how long it takes for child’s bite return to how it was before the crown was fitted. It also measures how much the child’s bite is increased and what the mechanisms are that return the bite to normal.\nThe child’s bite will be recorded and the changes measured using dental impressions (moulds) of the teeth taken before and after the crowns are fitted and then every 2 weeks for a further 4 appointments. The moulds will be made into stone models, scanned and converted into digital 3D images with changes analysed using 3D software.\nThe study involves taking additional measurements of children whose treatment already involves having a HTPMC placed a decayed baby back tooth.\nThis study will help clinicians and children/parents to understand what to expect when a stainless steel crown is placed using the Hall Technique. Children experiencing tooth decay tend to have more than one tooth with decay meaning that they will often need more than one crown fitted. By understanding how the bite returns to normal, clinicians planning further treatment will know when it is optimal to fit crown.
REC name
Yorkshire & The Humber - Leeds East Research Ethics Committee
REC reference
19/YH/0166
Date of REC Opinion
29 May 2019
REC opinion
Favourable Opinion