摘要:
In a device (51) for holding an in particular plate-like implement (52) serving for forming teeth, in particular a positioning calotte, in an articulator (1), having a holder (55) for the implement (52) which is held on the articulator (1), upon employment of an articulator (1) with a detachable upper part (37) and upon employment of only the lower part (35) of the articulator (1) the holder (55) is mounted on the joint parts (36) of the lower part (35) pivotably about the pivot axis (5) containing the joint parts (36).
摘要:
A dental face-bow comprising a base part, two side arms that extend from the base part and two positioning elements, for example ear pieces for positioning the face-bow on the head of the patient. The positioning elements are situated on the side arms and can be displaced in relation to the side arms. The face-bow is also provided with a displacement device which is used to simultaneously displace the two positioning elements in relation to the side arms. To drive the positioning elements, a dial, which is situated on the base part, can be used for example to turn a flexible shaft that is rotatably mounted inside the two side arms. the two ends of the shaft are equipped with gears that co-operate with gear rods on the positioning elements. This arrangement permits the face-bow to be placed on a patient extremely gently, as there is in particular no relative displacement of the side arms. The face-bow is also provided with a nose support, which can not only be displaced in the longitudinal direction in relation to the base part, but can also be pivoted about a horizontal axis that runs laterally. The face-bow can thus be aligned in a particularly accurate manner with the infra-orbital point in accordance with the shape and size of each patient's head.
摘要:
The invention concerns methods and a device for the determination of the centric position of a human set of teeth with improved precision. This is needed for the adjustment of an articulator in the production of dentures. For this purpose a plurality of successive bite movements or displacement movements of the lower jaw are recorded in form of electronic signal data and evaluated for the determination of the centric position.
摘要:
The invention concerns methods and a device for the determination of the centric position of a human set of teeth with improved precision. This is needed for the adjustment of an articulator in the production of dentures. For this purpose a plurality of successive bite movements or displacement movements of the lower jaw are recorded in form of electronic signal data and evaluated for the determination of the centric position.