Occlusion 1 Flashcards
What is a realistic definition of occlusion?
The dynamic morphological and physiologic relationships among all components of the mastication system include the neuromusculature, TMJs, and teeth
What is the importance of occlusion?
Essential to both general and dental health
Mastication
Ability to speak
Enjoy food
Aesthetics
What is the position called when there is complete intercuspation of the opposing teeth INDEPENDENT of condylar position?
Maximum intercuspal position (MIP)
How would you define centric occlusion?
The occlusion of opposing teeth when the mandible is in centric relation
May or may not coincide with the MIP
An important principle in prosthodontics is that until the ________ and ________ of the _______ are precisely determined, an accurate ________ relationship cannot be verified
Position, condition, TMJ, maxillomandibular
Centric relation is ____ of tooth contact
Independent
Centric relation is a maxillomandibular relationship in which the _____ articulate in the _____ against the _____ sloped of the _________
Condyles, anterior-superior, posterior slopes, articular eminences
In the position of centric relation, the patient can make ____, ____, or ____ movements
Is this strained or unstrained?
Vertical, lateral, protrusive
Unstrained
What are the most important things to understand about centric relation (when using it in a clinical setting)
Unstrained and repeatable!
With the loss and or wear of teeth, the mandible tends to take a _________
Protrusive posture
When teeth interfere with CR and or MIP, they may be _______ , resulting in __________
Subject to overload
Occlusal trauma
What can happen if there is occlusal trauma?
Excessive wear, mobility , sensitivity or pain, fractured cusps
Nociceptor and proprioceptor signals may be increased that effect neuromuscular control - may “reroute” mandibular closure
Which arch is normally slightly larger?
Max
what are the general shapes of arch forms?
Do they have to match within a patient?
Square, ovoid, tapering
No
Anatomical abnormality may be further compromised by ____, compensatory __________, ____ beyond the occlusal ____, or loss of ______
Occlusal wear, dental-alveolar eruption, extrusion, plane, periodontal attachment
Maxillary posterior teeth have a horizontal overlap on the ____ aspect, while mand posterior teeth have a horizontal overlap on the ___ aspect
Buccal, lingual
The occlusal plane is generally _________ antero-posteriorly relative to the ___________ by approx ___ degrees
Elevated, natural horizontal plane (when pt is standing), 8-10
Normally, the max incisal edges show from ___ to ___ mm at the resting lip length with ______ showing at high smile
0-2
Free gingival margin