Abstract: Dental apparatus for recording the interdental relationship of anterior teeth has an open frame and a handle. A bite tray (9) is secured within the frame so that impression material applied to the bite tray can be readily manipulated between a patient's anterior teeth. The frame may be formed from upper and lower pivotally interconnected arcuate parts (2, 5) and the bite tray (9) has an arcuate segmental body of flexible perforated supporting material with a stiffened strip (10) around its curved periphery. This strip (10) is clamped between confronting faces (15, 16) of the parts (2, 5) and is located in position by engagement of pins (8) on the lower part (2) with holes (11) in the strip (10).

Abstract: Dental apparatus for recording the interdental relationship of posterior teeth has spaced apart longitudinal supports (1, 2) between which longitudinal side members (7, 8) of a bite tray (5) are releasably engaged. The bite tray has supporting material (6) for supporting impression material, between the side members (7, 8). The side members (7, 8) may extend over inner faces of the longitudinal supports (1, 2) to protect against contact between the impression material and the supports (1, 2). The longitudinal members (7, 8) may be channel members which slide along or snap-fit over rail-shaped supports (1, 2). In an alternative embodiment the side members may engage slots (13, 14 or 18, 19) in the supports (11, 12 or 16, 17).

Abstract: A dental measuring apparatus is provided for accurately measuring dentures, models, bite blocks and the like, and comprises a table, a support and a probe. On the table is marked a datum point and a scale indicating distances from the datum point. The probe is movable relative to the support axially of itself towards and away from the datum point. A scale is marked on the support to indicate the height of the probe above the datum point.