METHOD FOR SIMULATING ANAESTHETIC ADMINISTRATION DIRECTION IN INFRAORBITAL ANAESTHESIA Russian patent published in 2025 - IPC A61B6/03 A61B6/50 G09B23/28 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to dentistry, and can be used in infraorbital anaesthesia. On a sagittal section of the patient’s skull by cone-beam computed tomography in 3Diagnosys program, point A is found as intersection of 3 planes: X – sagittal, Y – axial and Z – coronal, located on the lower edge of the infraorbital opening on the anterior surface of the body of the upper jaw. On a sagittal section from point A along the Z axis down by 10-12 mm, point A₁ is obtained on an anterior surface of the upper jaw. From point A₁ along axis Y to bone tissue of upper jaw point A₂ is marked, parallel to axis Y, distance A₁A₂ in millimetres is determined and point A₂ is estimated as border of needle sticking. Points A, A₁ and A₂ are connected, and the obtained angle A₂AA₁ is the point of the desired angle of needle sticking with the carpule anaesthetic. From the base A₁A₂ of the triangle AA₁A₂ in the continuation of the side AA₁, the triangle is rotated parallel to the axis Y – axial, through 180 degrees and through the obtained conditional vertex A₃ of the triangle A₃A₂A₁, the hypotenuse is extended to the alveolar process of the upper jaw and is designated as A₄, which is taken as the point of needle insertion.

EFFECT: method enables reducing the risk of injuring the patient’s hard and soft tissues, increasing the safety of infraorbital anaesthesia, eliminating the risk of nerve and blood vessel damage by taking into account the individual anatomical parameters of the patient.

1 cl, 2 dwg, 2 ex