ARTIFICIAL TOOTH-SKULL MODEL FOR DENTAL USE

摘要

PURPOSE: To make it possible to fix a mandibular model to a correct position by disposing joint connecting balls latch-couplably in respective joint connecting boxes in a simple shape. CONSTITUTION: The joint connecting boxes 6 are fixed to an upper supporting plate 28 and the joint connecting balls 5 are coupled to lower supporting plates 29. The joint connecting balls 5 are held in the respective joint connecting boxes 6. The mandibular model 3 may be changed in its position at the turning angle restricted by stopper parts 8 disposed on the maxillary model 2 in the position where mandibular model is latched. As a result, the mandibular model 3 may be turned downward from the maxillary model 2 against the force of locking spring devices 9 formed of spiral springs and may be pressed to the stopper parts 8. The joint connecting balls 5 are pressed to joint connecting races 7 which are engaged therewith by these locking spring devices 9.