In the case of dental anomalies of the formation of retention of the upper permanent canines, new views on the methods of its diagnosis are presented in the article. Both foreign and domestic a wide review of the literature of scientists was presented by the author, as well as various diagnostic methods were described in detail about this pathology. Various methods of evaluation of X-ray examinations and modern approaches to the diagnosis of retention of the upper permanent canines, which are currently used in practice by an orthodontist to make a final diagnosis, are described
