FIELD: medicine.
SUBSTANCE: invention relates to medicine, diagnostics in dentistry and lies in placing on-skin points from radiopaque substance or material on patient's skin and further registration of computer tomography in lateral projection of region of temporomandibular joint with reflection of said points. First on-skin point (I) is placed on line passing from Tragus medialis to the lowest point of eye socket, at the distance 11 mm from Tragus medialis towards eye socket. Second on-skin point (II) is placed at the distance 4 mm above I on the line originating from I and perpendicular to line, passing from Tragus medialis to the lowest point of eye socket. Third (III) and fourth (IV) on-skin points are placed at the distance 2 mm on the sides from II on line, parallel to line, passing from Tragus medialis to the lowest point of eye socket. On computer tomography first line is drawn from upper edge of auditory meatus to point, corresponding to lower edge of eye socket. From this line perpendicular line is drawn downwards tangent to posterior convex edge of articular head of lower jaw (LJ). Then perpendicular line is drawn downwards tangent to anterior convex edge of articular head of LJ, and lower line, passing through joint neck and parallel to first line. Within the delineated zone point of projection of LJ head axis is found and its coordinates are determined with respect to projections of on-skin points on hemogram. After that, projection of point of patient's LJ head axis on tomogram is transferred on patient's skin in region of previously applied on-skin points.
EFFECT: method ensures accuracy of finding LJ head axis and increase of accuracy of carried out treatment of any complexity in this region due to correct placement of projection of LJ head axis on patient's skin.
3 dwg
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Authors
Dates
2012-06-27—Published
2011-02-18—Filed