METHOD FOR MEASURING MANDIBULAR INCLINATION AND DEVICE FOR CAST MODEL TRANSFER INTO ARTICULATOR SPACE Russian patent published in 2014 - IPC A61C13/00 A61C11/00 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dental orthopaedics and can be used to locate the mandible within the skull and to transfer cast models in the articulator space considering this location. Measuring the mandibular inclination uses prominent X-ray contrast markers fixed on the lower teeth; standard software - a computed tomography viewer - is used to transfer a projection of a standard articulatory mandibular axis on a projection of the individual mandibular axis of the head of the mandible; a virtual system of coordinates is constructed to pass through the projection of the articulatory mandibular axis, and length of segments connecting the X-ray contrast markers and the centres of the system of coordinates and the angles of the above segments and the vertical axis of coordinates is calculated. The presented device for the cast models transfer to the articulator space is provided with telescopic indicators, length and angles of which are adjusted according to the data obtained by analysing the cone-beam computed tomography images; what is also integrated is a platform comprising the mandibular cast model provided with a base hinge to locate the model in the pre-set position and at a specific angle to the standard articulatory mandibular axis. The developed sequential algorithm for calculating the primary parameters of the mandibular inclination according to the cone-beam computed tomography images and transferring the cast models to the articulator space in the same way as the patient's dental arches are arranged within the skull in relation to the mandibular axis passing through the centres of the head of the mandible under an occlusion habit.

EFFECT: presented method and device enable measuring the mandibular inclination in relation to the standard articulatory mandibular axis projected on the individual mandibular axis within the skull, and transferring this position to the articulator.