Occlusion

Question 1

Define: occlusion

Answer 1

the STATIC contact relationship bw the incisal/occlusal surfaces of opposing teeth
-checking wax up contacts in MIP

Question 2

Define: articulation

Answer 2

the DYNAMIC contact relationship bw the occlusal surfaces of teeth during function- MANDIBULAR MOVEMENTS

• checking wax up with excursive movements

Question 3

Define: Maximal Intercuspal position (MIP)

-when is it used?

Answer 3

1. the complete intercuspation of opposing teeth independent of the condylar position
2. It is a highly reproducible guide for restoring the shape of natural teeth and for aligning and shaping artificial teeth for partially edentulous arches

Question 4

Define: Centric Relation (GPT)

Answer 4

The maxilla-mandibular relationship in which the condyles articulate with the thinnest, avascular part of their respective disks with the condylar-disc complex in the ANTERIOR SUPERIOR POSITION against the slopes of the articulators eminences
-this position is INDEPENDENT of TOOTH CONTACT

Question 5

Define: Centric Relation (Dawson)

Answer 5

CR is the relationship of the mandible to the maxilla, when properly aligned, condyle-disc assemblies are in the most superior position against the eminentiae, irrespective of vertical dimension or tooth position

• at the most superior position, the condyle-disc assemblies are braced medially, thus CR is also at the midmost position
• a properly aligned condyle-disc assembly in CR can resist maximum loading by the elevator muscles with no sign of discomfort

Question 6

The TMJ is a ______joint.

Define

Answer 6

Ginglymoarthrodial

Both a ginglymus (hinge joint)
Arthrodial (sliding joint)