In this study, applications of 3D printing techniques in dentistry sector are explained. In 3D applications, there are single tooth coating, bridge, implant tooth making, partial and prosthetic tooth making studies. These applications, which are made with 3d instead of manual according to the mouth of the patient, are longer lasting and useful. Therefore, 3d printing technology has started to be important and necessary in dentistry. It is preferred to use an abrasion resistant plastic material and porcelain material. The important point here is that a carcinogenic material should not be used as it is a study of oral and dental health. Such a study should be done by health and chemistry society.