IM 104

Occlusal Registration 

Occlusal registration is an accurate registration of the normal centric relationship of the maxillary and mandibular arches. Also commonly referred to as the bite registration. 

Types of Occlusal Registration

• Wax bite
  • The wax bite is useful when the diagnostic casts are trimmed.
  • The most common technique involves the use of a softened baseplate wax.

Widely used.

 Does not require a heat source.

Wax Bite Registration

• Polysiloxane bite-registration paste:
  • Supplied both as a paste system and also as cartridges
  • Fast-setting
  • No resistance to biting forces
  • No odor or taste for the patient
  • Gains dimensional stability over time
  • Convenient to use

• Zinc oxide–eugenol (ZOE) bite-registration paste
  • ZOE paste offers little or no resistance to bite closure and is fast-setting material.
  • The material is supplied in a paste system and dispensed onto a paper pad, mixed, and placed on a gauze tray for the patient to bite into.   

  What is centric occlusion?

Equipment needed: laboratory knife and heat source.

  What type of heat source is used?

How long should the wax bite registration stay in the patient’s mouth?

  Does this impression need to be disinfected?