Which item is used to register the bite by relating the upper model to the lower model?

Which item is used to register the bite by relating the upper model to the lower model?

• A. Bite Rims
• B. Final Model
• C. Custom Tray
• D. Impression

Answer: (A)

Bite rims provide the stable base for capturing how the upper and lower arches relate in occlusion. When bite registration material is placed on or between the rims and the patient closes, it records the relationship between the maxillary and mandibular models, allowing you to mount them with the correct vertical dimension in the articulator. The final model is simply the completed cast, not used to register the bite; a custom tray is for holding impression material during fabrication; an impression records the teeth and tissues but doesn’t establish the upper-lower relationship between models.

Bite rims provide the stable base for capturing how the upper and lower arches relate in occlusion. When bite registration material is placed on or between the rims and the patient closes, it records the relationship between the maxillary and mandibular models, allowing you to mount them with the correct vertical dimension in the articulator. The final model is simply the completed cast, not used to register the bite; a custom tray is for holding impression material during fabrication; an impression records the teeth and tissues but doesn’t establish the upper-lower relationship between models.