Occlusion Flashcards
Define: occlusion
the STATIC contact relationship bw the incisal/occlusal surfaces of opposing teeth
-checking wax up contacts in MIP
Define: articulation
the DYNAMIC contact relationship bw the occlusal surfaces of teeth during function- MANDIBULAR MOVEMENTS
- checking wax up with excursive movements
Define: Maximal Intercuspal position (MIP)
-when is it used?
- the complete intercuspation of opposing teeth independent of the condylar position
- It is a highly reproducible guide for restoring the shape of natural teeth and for aligning and shaping artificial teeth for partially edentulous arches
Define: Centric Relation (GPT)
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
Define: Centric Relation (Dawson)
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
The TMJ is a ______joint.
Define
Ginglymoarthrodial
Both a ginglymus (hinge joint)
Arthrodial (sliding joint)