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Title: The management of sleep-related breathing disorders utilising mandibular repositioning splints
Author: Bates, Claire J.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2006
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This prospective cross sectional cohort study examined management of sleep related breathing disorders with mandibular repositioning splints (MRS). There aspects were examined; 1. The relationship between severity of sleep related breathing disorders and lateral cephalometric radiograph values. 2. Patients’ perspectives on treatment of sleep disordered breathing with a mandibular repositioning splint. 3. Comparisons of treatment success with severity of sleep disordered breathing and patients anatomical dimensions. One hundred and twenty one lateral cephalometric radiographs were traced under uniform conditions and a series of 56 landmarks identified, from which 48 angular and linear measurements were made. Significant differences were seen when comparisons of these measurements with the severity of sleep related breathing disorders were investigated. Body Mass Index, the Maxillary-Mandibular Plane angle and the pharyngeal dimension increased significantly in some subjects as Epworth Sleepiness Score (ESS) increased in severity. Overjet, lower lip length, and the distance from the Hyoid bone to B point on the mandible increased significantly in some subjects as OSAHS, as measured by the Apnoea/Hypopnoea Index (AHI), increased in severity. The Hyoid bone was found to rotate counter clockwise as severity of AHI increased, as a result the distance between the most anterior superior point on Hyoid bone and the maxillary plane was seen to decrease as severity of AHI increased. Investigation of patients and sleeping partners perspectives on treatment was undertaken with the use of a questionnaire based study. ESS score for both patents and partners decreased significantly after treatment, but the mean decrease was not clinically significant. No correlation was found between AHI and ESS score. No predictors for success or failure of treatment were found.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (D.D.S.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available