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Sinuses

Sinuses. Oral Anatomy, DA102. Purpose of the Sinuses:. Purpose: Hollow cavities of the nasal sinuses function to lighten the overall bone weight of the skull Increase ability to breathe Provide voice tone. Four Pairs of Sinuses (bilateral).

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Sinuses

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  1. Sinuses Oral Anatomy, DA102

  2. Purpose of the Sinuses: • Purpose: Hollow cavities of the nasal sinuses function to lighten the overall bone weight of the skull • Increase ability to breathe • Provide voice tone

  3. Four Pairs of Sinuses (bilateral) • 1) Frontal: just above the orbital cavity (eyebrows). • 2)Sphenoid: deep in the highest and most posterior part of the nasal cavity.

  4. Sinuses (con’t) • 3) Ethmoid: between the eyes • 4) Maxillary: • Largest in adults, the sinus covers area from maxillary canine to 3rd molar and upwards

  5. Paranasal Sinuses:

  6. Please note the location of the sinuses on this x ray. If a patient loses a tooth in the sinus region, the sinus cavity will extend down into the location were the tooth was.

  7. This x ray is of a patient that has implants for every tooth. Observe how close the implants are to the maxillary sinuses.

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