Accessory device for a dental articulator for three-dimensional determination of the differences

摘要

The present invention relates to an accessory device for a dental articulator by means of which the differences of the joint positions between central occlusion (intercuspidal occlusion position) and central relation (retral contact position) can be measured in all three dimensions. The accessory device consists of an upper frame portion for a dental articulator which, in lieu of the ball sockets, has measuring means mounted on the bearing shafts 12 so as to be laterally shiftable, said measuring means 60 having a ball contacting face 61 provided with a measuring label for determining the deviations on the x and z axes, and each bearing shaft 12 having an axial point 62 capable of extending through a bore 63 in the ball contacting face 61 in order to mark the central relation on the adhered measuring label by perforation thereof, said measuring means additionally having a distance measuring surface 64 disposed parallel to the ball contacting face 61 for measurement of the transversal shift on the y axis.