The wax dike records the upper and lower (occlusal) relationship, which is applicable to those with unilateral or bilateral free loss, continuous loss of more than two teeth on each side, or the missing teeth of upper and lower dentition without opposite (occlusal) teeth. (Yahe) dike is wax dike. The wax occlusal record upper and lower (occlusal) relationship is applicable to the posterior teeth that can still maintain the vertical relationship between upper and lower (occlusal) in the mouth, but it is difficult to determine the accurate 

(occlusal) relationship in the model.