Unit 5 Facial Bone & Paranasal Sinuses

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- 1. Maxillae
- 2. Palatine
- 3. Zygomatic
- 4. Lacrimal
- 5. Nasal bones
- 6. Inferior nasal conchae
- 7. Vomer
- 8. Mandible
- 1. Nasal
- 2. Lacrimal
- 3. Zygoma
- 4. Inferior nasal concha
- 5. Maxilla
- 6. Mandible
- 7. Lacrimal
- 8. Nasal
- 9. Zygoma
- 10. Maxilla
- 11. Mandible
- Maxillary Bones
- Body
- 1. Maxillary sinuses
- 2. Roots of upper molars
- 3. Right maxilla
- 4. Left maxilla
- 1. Anterior nasal spine
- 2. Frontal
- 3. Zygomatic
- 4. Alveolar
- 5. Palatine
- 6. Frontal process
- 7. Zygomatic process
- 8. Body
- 9. Alveolar process
- 10. Acanthion
- 11. Anterior nasal spine
What bones?

- L-shaped bones that form the posterior part of the hard palate (roof of mouth)

- Articulate with palatine processes of the maxillae to form the entire hard palate

Palatine Bones
- 1. Right palatine process of right maxilla
- 2. Left palatine process of left maxilla
- 3. Palatine bones (horizontal portions)
- 4. Pterygoid hamulus of sphenoid (cranial bone)
What bones?

- Bones that form the prominence of the cheeks & make up the lower outer portion of the orbits

- _________ – slender process of bone that extends posteriorly to join with zygomatic process of temporal bone

- _________ – most prominent part of zygoma used as a positioning landmark
- Zygomatic bones
- Zygomatic arch
- Zygomatic prominence
- 1. Maxilla
- 2. Zygomatic bone
- 3. Zygomatic prominence
- 4. Zygomatic arch
- 1. Lacrimal
- 2. Nasal bone
- 3. Lacrimal bone
- 1. Nasal
- 2. Frontal process of maxilla
- 3. Nasion
- 4. Lacrimal bone
- 5. Nasal bones
Inferior nasal conchae
- 1. Crista galli
- 2. Superior nasal conchae
- 3. Cribriform plate
- 4. Sphenoid bone
- 5. Vertical portion of palatine
- 6. Horizontal portion of palatine
- 7. Palatine process of maxilla
- 8. Inferior nasal conchae
- 9. Middle nasal conchae
- 1. Superior and middle nasal conchae (ethmoid bone)
- 2. Inferior nasal conchae
Which bone?

Thin, triangular bone situated in the midsagittal plane of the floor of the nasal cavity

_______ – divides the nasal cavity into 2 halves. Made up of:
•Perpendicular plate of ethmoid - superior portion
•______ - inferoposterior portion
•______ - anterior portion
- Vomer
- Nasal septum
- vomer
- septal cartilage
- 1. Septal cartilage
- 2. Perpendicular plate of ethmoid
- 3. Vomer
Which bone?

Largest facial bone & only one that is moveable
2 main parts separated by the gonion (angle):
_____ – curved horizontal portion (u-shaped)
_____ (2) – vertical portions
- Mandible
- Body
- Ramus
- 1. Body
- 2. Body
- 3. Ramus
- 4. Rami
Mandible Body

________ – superior part of body; supports lower teeth

________ – union of each lateral half at anterior midline
________ – flat, triangular area below symphysis menti with knoblike projections; center is called “mental point”

________ – passageway for nerves & blood vessels (lower lip & chin)
- Alveolar process
- Symphysis menti
- Mental protuberance
- Mental foramina
- 1. Mental point
- 2. Symphysis menti
- 3. Alveolar process
- 4. Alveolar process
- 5. Mental protuberance
- 6. Mental foramen
____________?
- Madibular Rami
- 1. Mandibular notch
- 2. Coronoid process
- 3. Condyloid process
- 4. Condyle
- 5. Neck
- 6. Coronoid process
- 7. Mandibular notch
- 8. Condyloid process
- 9. Condyle (head)
- 10. Neck
- 11. Ramus
Articulations

Maxilla/mandible & teeth:
- _______

Mandible & Temporal bones:
- _______(__) - condyle of mandible & temporomandibular fossa of temporal bone
- _______ with a ______ movement type.
Amphiarthrodial
- Temporomandibular joint (TMJ)
- Diarthrodial, bicondylar
Orbits
Orbital Openings

_________ (sphenoid bone) – passageway for optic nerve from retina to brain

_________ (between lesser & greater wings of sphenoid bone) – passageway for 4 cranial nerves that serve eye

_________ – (between maxilla, zygoma & greater wing of sphenoid) – passageway for maxillary branch of cranial nerves that serve cheek, nose, upper lip & teeth

_________ – small space which is a portion of the lateral wall of the optic cana
- Optic foramen
- Superior orbital fissure
- Inferior orbital fissure
- Sphenoid strut
Orbital openings
- 1. Optic foramen
- 2. Sphenoid strut
- 3. Superior orbital fissure
- 4. Inferior orbital fissure
Sinuses

4 groups of air-filled cavities that communicate with each other & the nasal cavity:
- ______ (2) – within bodies of maxillae
- ______ (2) – within inner & outer tables of frontal bone
- ______ (many) – within lateral labyrinths of ethmoid
- ______ (1 or 2) – within body of sphenoid below sella turcica

Serve to:
- Lighten the skull
- Provide resonance for the voice
- Produce mucus to moisten inhaled air
- Maxillary
- Frontal
- Ethmoid
- Sphenoid
Sinuses
- 1. Right temporal bone
- 2. Frontal
- 3. Ethmoid
- 4. Sphenoid
- 5. Maxillary
- 6. Frontal
- 7. Ethmoid
- 8. Sphenoid
- 9. Maxillary
- 10. Left temporal bone
Radiographic Anatomy – PA Facial Bones & Sinuses
- 1. Crista galli
- 2. Petrous ridge
- 3. Maxillary sinus
- 4. Mandible
- 5. Anterior nasal spine
- 6. Ethmoid & Sphenoid sinuses
- 7. Supraorbital margin (SOM)
- 8. Frontal sinuses
Radiographic Anatomy – Waters Facial Bones & Sinuses
- 1. Bony nasal septum
- 2. Maxillary sinus
- 3. Petrous ridge
- 4. Mandible
- 5. Dens
- 6. Angle of mandible
- 7. Coronoid process
- 8. Zygoma
- 9. Zygomatic arch
- 10. Orbit
Radiographic Anatomy – Lateral Facial Bones & Sinuses
- 1. Frontal sinuses
- 2. Nasal bone
- 3. Ethmoid sinuses
- 4. Maxillary sinuses
- 5. Anterior nasal spine
- 6. Mentum
- 7. Hyoid bone
- 8. Angle (gonion)
- 9. Ramus of mandible
- 10. Greater wing of sphenoid
- 11. EAM
- 12. Sella turcica
- 13. Petrous portion of temporal bone
- 14. Sphenoid sinuses
- 15. Orbital roof
Radiographic Anatomy – SMV Facial Bones & Sinuses
- 1. Foramen ovale
- 2. Foramen spinosum
- 3. Foramen magnum
- 4. Petrous pyramid
- 5. Mastoid
- 6. Sphenoid sinus
- 7. Condyle
- 8. Posterior border palatine bones
- 9. Vomer
- 10. Maxillary sinus
- 11. Ethmoid sinuses
PA Axial Facial Bones(Caldwell Method)
PA Axial Facial Bones(Caldwell Method)
PA Parietoacanthial Facial Bones (Waters Method)
PA Parietoacanthial Facial Bones (Waters Method)
PA Modified Parietoacanthial Facial Bones (Modified Waters Method)
PA Modified Parietoacanthial Facial Bones (Modified Waters Method)
Lateral Facial Bones
Lateral Facial Bones
Lateral Nasal Bones
Lateral Nasal Bones
Submentovertical (SMV) Zygomatic Arches
Submentovertical (SMV) Zygomatic Arches
Oblique Inferosuperior Tangential Zygomatic Arches
Oblique Inferosuperior Tangential Zygomatic Arches
PA Mandible
PA Mandible