FIELD: medicine; dentistry.
SUBSTANCE: invention can be used for restoration of hard tissue of crown part of teeth. Child undergoes digital scanning of both jaws, and the results are sent to the laboratory, where a digital wax-up with individual modeling is performed. After that, the obtained model is printed on 3D printer from a composite resin and an individual rigid tray is made using an adaptive layer of transparent fluid silicone. Corrugations are formed on the entire surface of the tray for better fixation of the tray in the doctor’s hand. Tray is made on a jaw segment or on a full dentition. Finished tray is perforated on the occlusal surface in the area of each tooth with a hole diameter of 1–1.5 mm, wherein one of the holes has the shape of a truncated cone directed upwards, and is intended for the introduction of the composite material by means of a cannula, and the second hole has the shape of a truncated cone directed downwards, and is intended for release of excess composite material and displaced air. Distances between the holes in the tray for one tooth are located at a proportional distance from each other in relation to the anatomical edges of the restored tooth. Further, adjacent teeth are isolated, the tray is fitted in the oral cavity, the cannula is inserted into one of the holes and the composite material is supplied, excess material coming out of the second hole is removed. Restoration is polymerised, the tray is removed, and if necessary, the shape of the restored crown portion of the tooth is corrected.
EFFECT: method, due to preliminary digital simulation and a rigid tray made on its basis using an adaptive layer, allows to increase accuracy and efficiency of restoration of crown part of hard dental tissue in children.
3 cl, 8 dwg, 2 ex
