Fixed dental prosthesis restores teeth which are missing or endodontically treated. It is considered as one of the best methods to replace the lost tooth or teeth and restore their functions because of retention and patient comfort. As the demand of fixed prostheses have increased the prevalence of failures of such prostheses have also increased. This study was done to assess the mean life span of such prostheses as well as the reasons of failures in order to help the clinician render better and successful treatment. In this study 103 subjects were evaluated and examined. It was concluded that Mean length of service of a fixed prosthesis was 7.33 years. Loss of retention was found to be the most common cause of failure followed by caries. The failure rate of dental bridge was more compared to any other types of prostheses. Porcelain fused to metal crowns showed more failure percentage than other types of prostheses.
