Abstract
Literatures on the shortened dental arch (SDA) concept were reviewed. Clinical data demonstrated that the SDA is one option as a treatment goal in the majority of patients, meeting the requirement offunction, aesthetics, and stability. However, most of the data were obtained from limited types of SDA (OU: 3-5), in a rather small number of patients, and published by a certain research group.Future research is required with a large sample in a multi-center trial and with longitudinal design toimprove the scientific evidence.