Radiation protection in cone-beam computed tomography

Since the introduction of CBCT in dentistry, there has been a proliferation in its use. This is reflected by the steady growth in the number of scientific articles published year on year. In general terms, this equipment is associated with lower radiation doses to the patient when compared to conventional computed tomography. However, doses are higher in comparison with conventional dental radiographic techniques. It has been established that it is possible to reduce doses in CBCT examinations without significant loss of diagnostic image quality. This is especially important in children and adolescents due to their higher radiosensitivity. The present literature review shows general concepts related to dose and risks of ionising radiation. The principles of radiation protection are reviewed and the current situation regarding dental CBCT is described. Furthermore, a series of factors which affect radiation doses and which can be taken into account for dose optimisation are described.