A Study of Factors Associated with Orthodontic Treatment Outcome

Taylor, Philip John Stockley (1994) A Study of Factors Associated with Orthodontic Treatment Outcome. MSc(R) thesis, University of Glasgow.

Abstract

Objective measures of malocclusion have been developed in response to concerns over treatment standards and provision of unnecessary treatment, the rise in the level of clinical audit and the need for effective use of health resources. To determine which factors, including treatment need and severity of malocclusion measured by occlusal indices, have most influence on quality of result, improvement, and resource commitment in terms of treatment duration, case notes and pre- and post-treatment study casts of 161 cases treated within a dental hospital orthodontic department were examined and assessed. Differences were found between cases treated with full fixed appliances and other appliance types with regard to severity of malocclusion, extraction pattern, duration of treatment and number of appointments required to complete treatment. There was evidence that different criteria in appliance selection were in use for males and females. Stepwise multiple linear regression analysis identified the initial severity of malocclusion as being highly influential and predictive for fixed appliance therapy in all the outcomes under study. Other important information included whether or not the treatment plan had been altered through poor co-operation, whether a first permanent molar had been extracted, and whether or not an anterior crossbite had been present initially. Accurately predictive models were produced for improvement as measured by change in PAR score, but predictive models for post-treatment PAR and duration of treatment were less accurate.

• Item Type: Thesis (MSc(R))
• Qualification Level: Masters
• Additional Information: Adviser: W J S Kerr
• Keywords: Dentistry
• Date of Award: 1994
• Depositing User: Enlighten Team
• Unique ID: glathesis:1994-74833
• Copyright: Copyright of this thesis is held by the author.
• Date Deposited: 27 Sep 2019 15:56
• Last Modified: 27 Sep 2019 15:56
• URI: https://theses.gla.ac.uk/id/eprint/74833