METHOD FOR JAW IMMOBILISATION BY MEANS OF CUSTOM-MADE 3D SPLINTS Russian patent published in 2025 - IPC A61B17/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to maxillofacial surgery, surgical and orthopaedic dentistry, and is intended for use in fixing jaw fragments. Splints are fixed on the vestibular surface of the dentitions of the lower and upper jaws to the teeth with metal ligatures, and tightened together with rubber rings by means of loops on the splints. If observing a mandibular fracture without fragment displacement, the patient’s upper and lower jaws are imprinted with using an impression tray and an alginate impression compound. Produced impressions are transferred to a dental laboratory where a technician makes cast models of the upper and lower jaws using the latter. Then cast models are scanned separately and in occlusion in optical infrared scanner Dentsply Sirona inEosX5. Scanned models are converted in InLab software. Then they are recorded in occlusion. Obtained data from InLab software are exported to Exocad software, where design of future individual splints with locking loops in projection of teeth 2, 4, 6 is simulated. Then data of simulated tires are sent to Asiga 3D printer, where printing takes place. Obtained 3D model is placed in polymerizer Asiga Flash for 4 minutes, followed by post-processing tires. Then, under the conduction and/or infiltration anaesthesia, individual 3D-printed splints of a light-curable polymer having 8 to 12 hooking loops are applied on the teeth of the upper and lower jaws from the vestibular surface, 4-6 loops per one jaw in projection 2, 4, 6 teeth. Splints are fixed to each tooth preserved on the jaws and arranged within the structure with metal ligatures; an intermandibular extension is performed by means of rubber rings.

EFFECT: by making the splints of the light-curable polymer having the intimate adjacency to the anatomical structures of the lower and upper jaws and to the teeth, the method enables reducing the number of retention points for food, ensures more effective oral hygiene while wearing them.

1 cl, 16 dwg, 3 ex