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DA 115 Oral Anatomy

Nerves of the Face and Neck

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4 Cranial nerves are in the face and oral cavity

• Trigeminal• Facial• Glossopharyngeal• Hypoglossal

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Trigeminal Nerve

• 1. Largest• 2. Runs through the

Mandibular and Maxillary

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MAXILLARY NERVE

• IS DIVIDED INTO FOUR BRANCHES

1. Zygomatic 2. Infraorbital3. Posterior Superior Alveolar4. Pterygopalatine

Is a sensory nerve.

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Maxillary Nerve Branch

Zygomatic Nerve Supplies • Area around the eye• Behind the Zygomatic

arch (cheek bone)

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Maxillary Nerve Branch

INFRORBITAL NERVE SUPPLIES • Side walls of the Max.

Sinus• Gingiva• Mesial buccal root of

the fist molar and bicuspids

• Cuspids• Laterals• Centrals

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Posterior Superior Alveolar Nerve Supplies

• Gingiva• Maxillary Sinus• Cheeks• Maxillary molars

(except the mesial buccal root of 1st molar)

Maxillary Nerve Branch

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Mandibular Nerve Branch

• Is the Largest Division of the Trigeminal Nerve

• Has both sensory and motor neurons• Is divided into three branches * Buccal * Lingual * Inferior Alveolar

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Mandibular Nerve Branch

• Buccal Nerve Branch

• Supplies

Buccal mucosaBuccal GingivaBuccal of the mand.

Molars

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Mandibular Nerve Branch

• Lingual Nerve Branch

• Supplies• Floor of the mouth• Top of the tongue• Taste buds • Lingual Gingiva

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Mandibular Nerve Branch

• Inferior Alveolar Nerve

• Supplies• Mylohyoid muscle• Mandibular canal• Mandibular teeth • Chin• Lower lip