The overall objectives of this study is to assess the contributions of diagnostic devices in dentists' decision-making processes surrounding suspicious occlusal carious lesions (SOCL), an assessment that has not yet been attempted, despite the growing popularity of these devices. SOCLs can be defined as occlusal surface areas where visual, tactile, and radiographic signs are insufficient to definitively diagnose caries but where some of these signs are present.This study examines the use of two diagnostic devices on dental practitioners' identification and treatment of SOCLs.