Factors for Successful Crowns

Précis:

This study examines patient, dentist, and laboratory factors associated with the fabrication of successful crowns. Each year, dentists must re-do thousands of crowns that are returned from the dental laboratory but are not clinically acceptable. It is not clear why some of these crowns are unsatisfactory. This study will be conducted in two stages. The first stage is a questionnaire that will document current practices among clinicians making crowns, such as material choices and impression techniques. The second stage is a clinical study that will analyze dentist and clinical variables to find predictors for crown success. Data from dental laboratories will also be collected in the clinical study to determine the prevalence of acceptable impressions, crown preparations and jaw relation records sent to labs for crown fabrication.