The Department of Stomatology of the Fourth Affiliated Hospital of Zheng Da University is the best, ranking in the top ten in China. Hospital stomatology is a key clinical specialty determined by the Health Department of Henan Province. Dental filling, endodontic treatment, root canal treatment and plasticizing treatment have been carried out in the stomatology department. Dental surgery has carried out dental implants, comprehensive treatment of cleft lip and palate, repair of acquired deformity and surgical treatment of maxillofacial tumors; Porcelain crown and bridge restoration, precision casting bracket and artificial dental implant restoration carried out by prosthodontics department are at the leading level in China; Orthodontics is the first in the province to carry out fixed orthodontics, magnetic orthodontics and early orthopedic treatment of skeletal deformities, and some of them have reached the international advanced level.