[Individual protective crown]

Protection of the worked out live teeth's crowns by covering them with protective crowns should be routine procedure when performing, stable prosthetic restoration. Carrying out of individual protective crown by the "intermediate" method, i.e. basing on plaster cast, is preceded by grinding operation in the mouth of the patient. Protective crown is made of quick-polymerizable acryl introduced into alginate impression and pressed against plaster cast prepared previously. Mechanically worked out crown is precise, esthetic and durable. The method of carrying out is simple, effective and safe for the patient in comparison with the methods used til now because there is no contact of the quick-polymerizable plastics with the tissues of polished teeth and with parodontium.