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Dental General f0c41c8f

Hinge movement is produce by the action of:

A
Lateral pterygoid.
B
Supra hyoid muscles.
C
Both.
D
Temporalis.
High-Yield Explanation
Hinge movement is a purely rotational movement of the joint which takes place around a horizontal axis till the patient opens his mouth to about 20-25 mm. This movement is produced by the action of the lateral pterygoid and suprahyoid muscles and is aided by gravity. The condyle begins to glide (translate) beyond 13° rotation.

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