Introduction: At the late 1990s, cone-beam computed tomography (CBCT) was introduced in dentistry, and has applications in different specialities, including implant dentistry. Among the advantages of CBCT are its lower radiation dose in comparison with conventional medical computed tomography. However, these doses are higher than with conventional radiographic techniques. The aim of this study was to perform a narrative review of the guidelines developed by international organisations on the use of CBCT in the pre-surgical assessment in implant dentistry.