During a four-week pre-intervention period, 90 practitioners will collect and record descriptive and treatment information for the SOCLs they identify. Practitioners will then be randomized into one of 3 study arms: no diagnostic device, DIAGNOdent®, and Spectra®, and will collect and record similar information as the pre-intervention period for another six weeks, enrolling an additional 20 SOCLs. They will also complete diagnostic vignettes at the beginning and end of the study, as well as a post-study questionnaire on the utility of the devices, if assigned to a device arm. Analyses will examine differences in proportion of SOCLs treated surgically in the groups with and without the diagnostic device; and, for those treated surgically, differences in the proportions of SOCLs with extension into dentin. Differences in pre- and post-study responses on the vignettes will suggest which components of the decision-making process involved in SOCL identification and management have been modified by use of the diagnostic devices.