Lecturers/Educators/Presenters are welcome to use these animations.  They will play independantly on PowerPoint 2000 (but not PowerPoint '97).
Simply right click on any animation and select "save as" to your computer.
Animated Tutorial of the Temporomandibular System
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How and why lateral pterygoids become naturally programmed to avoid functional interferences
             







Vigorous chewing (function) can therefore fatigue an otherwise healthy lateral pterygoid.
If the lateral pterygoid is involved in nocturnal parafunction, it displays varying degrees of dysfunction.  The interference is not the cause of the dysfunction, but is a modifier of the sypmtoms caused by the parafunction.
Next: Non-working posterior inference causes non-working side joint and disc strain
1. Introduction of normal function versus parafunction
2. The simultaneous combination of condylar rotation and translation
3. Normal unilateral activity and effect of a Lateral Pterygoid muscle
4.  Parafunctional clenching activity of the Temporalis
5.  How various occlusal schemes alter Temporalis clenching intensity
6.  The maximum clenching intensity occurs in the musculoskeletally stable position
7. How "canine rise" serves to diffuse parafunction
8. Working posterior interference causes non-working side joint strain during occluding
9.  Non-working posterior inference causes non-working side joint and disc strain and CLASS III complications
10. Comparing the NTI's occluding scheme with other occluding schemes.
11. How excess vertical dimension provided by the NTI can be straining to a joint
12. Clenching in a protrusive position can cause/perpetuate facial/sinus symptoms and cervical tension.
13. The  Parafunctional Nature of Articulators