METHOD FOR CORRECTING THE POSITION OF HEADS OF LOWER JAW IN PATIENTS WITH REDUCED INTERALVEOLAR HEIGHT Russian patent published in 2021 - IPC A61C7/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to dentistry, and is intended for use in correcting the position of the heads of the lower jaw in patients with reduced interalveolar height. At the first clinical visit, the attending dentist takes optical impressions from the upper and lower jaws using the Medit i500 intraoral scanner from Medit, South Korea. Next, the dental technician models the hardware bases and tables of the gnathometer using the Exocad DentalCAD software, Germany, upon completion of the modeling, the intraoral recording device-gnatometer is printed on a FormLabs Form2 3D printer, FormLabs, USA, while the substrate for 3D printing is FormLabs photopolymer resin, after creating plastic models and hardware bases with tables, the writing pin is screwed into the hole that was previously virtually simulated in the program on the table of the upper dentition model. At the second clinical visit, the dentist conducts, firstly, the study of the biomechanics of the lower jaw using an intraoral recording device - a gnatometer and, secondly, determining the DFS and interalveolar height using a gnathometer - they ask the patient to move the lower jaw forward - backward, to the right - to the starting point, to the left - to the starting point, after finding the interalveolar height and the DFS, the hardware bases of the gnathometer installed on the upper and lower dentition are fastened together in the patient's oral cavity using silicone material Bisico Regidur, Germany, after it has hardened, the gnathometer is removed from the oral cavity, then the dental technician scans the gnathometer using a laboratory scanner ZirkonZahn, Italy, in the Amann Girrbach virtual articulator of the Exocad DentalCad software, the dental technician orients virtual scans - models of the patient's dentition taking into account the data obtained using the gnatometer, after which, taking into account the vertical size of the DFS, obtained using the gnatometer, the dental technician makes a mouthguard, then additionally, CBCT is performed with a gnathometer in the oral cavity: according to the orthopantomogram, the determination of the CSF and interalveolar height is monitored by the position of the joint heads in the mandibular fossae, after which, if necessary, the aligners are corrected until the physiological position of the mandibular heads is obtained, then permanent prostheses are made.

EFFECT: method, due to the combination of the anatomical and instrumental method with CBCT, makes it possible to quickly correct the position of the heads of the lower jaw and thereby shorten the treatment time and eliminate the likelihood of displacement of the heads of the lower jaw from the normal position.

1 cl, 4 dwg, 1 ex