Which muscle brings the mandible forward so the anterior teeth bite tip to tip?

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Study for the City and Guilds Dental Nursing Block 2 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare effectively. Get ready for your exam!

Multiple Choice

Which muscle brings the mandible forward so the anterior teeth bite tip to tip?

Explanation:
Protrusion of the mandible, bringing the anterior teeth into tip-to-tip contact, is produced mainly by the lateral pterygoid. When this muscle contracts on both sides, the inferior head pulls the mandible forward, while the superior head guides the articular disc and condyle forward, aligning the teeth in that forward position so the front teeth bite tip to tip. The other muscles mainly elevate or retract the jaw and contribute less to forward movement; the medial pterygoid can assist with protrusion but is not the primary driver. So the lateral pterygoid is the muscle that brings the mandible forward to achieve anterior teeth tip-to-tip contact.

Protrusion of the mandible, bringing the anterior teeth into tip-to-tip contact, is produced mainly by the lateral pterygoid. When this muscle contracts on both sides, the inferior head pulls the mandible forward, while the superior head guides the articular disc and condyle forward, aligning the teeth in that forward position so the front teeth bite tip to tip. The other muscles mainly elevate or retract the jaw and contribute less to forward movement; the medial pterygoid can assist with protrusion but is not the primary driver. So the lateral pterygoid is the muscle that brings the mandible forward to achieve anterior teeth tip-to-tip contact.

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