Question 239 (part 2) · LDEK · Physiology of the masticatory system and occlusion

Considering the action of masticatory force on mandible, it may be compared to lever:

  1. A. unilateral I class.
  2. B. unilateral III class.
  3. C. bilateral I class.
  4. D. bilateral III class.
  5. E. answers A and D are true.
Hint

Locate the fulcrum (TMJ), the effort (elevator muscles) and the load (food at the teeth) along the mandible.

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