A Pilot Study Clinically Testing a Prediction Model for Single Crowns, Fixed- and Removable Partial Dentures
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
To the present day there is no standardised method to anticipate the survival of a prosthetic treatment, the clinician has to make an assessment based on clinical experience. A prediction model has been developed as an aid to set a prognosis for the survival of single crowns, fixed- and removable partial dentures. To achieve this goal the prediction model includes many variables possibly affecting the outcome of the prosthetic treatment. The aim of this pilot study was to clinically test this prediction model by making a retrospective study on single crowns, fixed- and removable partial dentures. Data from patient records at the undergraduate clinic at the Dental School, Umeå University from the years 2008-2009 were searched for prosthetic treatments with single crowns, fixed- and removable partial dentures. By applying the prediction model a prognosis was set for each prosthetic treatment. Approximately five years later, the prostheses and abutment teeth were re-examined and compared to the outcome. Forty patients were asked to participate in the study, of whom twenty-five patients responded. 18 prostheses in eleven patients were examined clinically, seven prostheses in six patients were only analysed through dental records. Out of 165 assessments, 147 corresponded to the outcome after five to six years, that is 89 %. Out of the 25 prostheses four had failed within five years, whereof all were predicted. However, failure was expected in fourteen more prostheses. The model proved to be useful, but tends to overstate the risk for failure.
Place, publisher, year, edition, pages
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:umu:diva-114877OAI: oai:DiVA.org:umu-114877DiVA: diva2:898667