Dental implantology based on osseointegration is among the most significant advances in dental science in the last 50 years. Imaging technology contributes to all stages of implant treatment, from presurgical site evaluation to postoperative assessment of integration, and long-term periodic evaluation of implant status. Various imaging modalities have been used for dental implant assessment in the different stages of implant treatment. These include intraoral radiography (film-based and digital), panoramic radiography, computed tomography, cone-beam computed tomography, and others. Selection of the specific imaging technique should be based on its suitability for providing the diagnostic information required by the implant team at different stages of treatment. This article reviews the applications of different imaging technologies and their diagnostic contribution to presurgical evaluation, treatment planning, and postoperative assessment of dental implants.