mandible, sinuses, temporal bone wynn harrison, med

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MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

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Page 1: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

MANDIBLE, SINUSES, TEMPORAL BONE

Wynn Harrison, MEd

Page 2: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

NEW WORDS

• Sinusitis: Inflammation of the sinuses

• Mucocele: Enlargement of the lacrimal sac. Cystic disease of the air cavities – causes erosion of the bone

Page 3: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

• Retention Cyst: A cyst retaining the secretion of a gland, ie: mucosal or sebaceous cyst

Mastoiditis: Inflammation of the mastoid sinus

Page 4: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

• Otitis: Inflammation of the ear: ie: otitis media; can be internal or external

• Acoustic Neuroma: benign tumor of the eighth cranial nerve. Symptoms = hearing loss, pain, headache, balance problems.

Page 5: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Mandible

Page 6: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

AP Axial (Townes)

• OML = 30 degrees• IOML = 37

degrees

• Center mid-ramus

Page 7: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

PA Mandible

• OML perpendicular to IR

• Center mid-mandible

Page 8: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Axiolateral Mandible

• Head tilt 15 degrees

• CR 15 degrees cephalic

Page 9: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 10: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

SMV Mandible

• IOML parallel to IR and perpendicular to CR.

• Image mentum skimming frontal bone

• Merrill’s p. 389-390

Page 11: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 12: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Temporomandibular joints

Page 13: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Cone-Down of TMJ

• Relaxed Lateral with 15 degree caudal angulation

Merrill’s p. 396

Page 14: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 15: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Schullers Projection

• The Schullers Projection can be used to evaluate the temporal mandibular joints and mastoid air cells and inner ear.

Page 16: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Schullers Protection for TMJ• Open and closed

mouth view are taken of both TM joints.

• The TMJ closest to the Bucky will be the one seen at the center or top of the film.

• Accurate positioning is essential to being able to compare joints.

Page 17: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 18: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

TMJ Syndrome

• Clicking, pain in TMJ• May indicate dysfunction of the

TMJ• Caused by inflammation, stress,

muscle spasm, etc.

Page 19: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Paranasal Sinuses

Page 20: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 21: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd
Page 22: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Lateral Sinus

Page 23: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Sinuses: Caldwell

Frontal

Ethmoid

Maxillary

Page 24: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Water’s view (sinuses)

Maxillary Sinus

Petrous Pyramids

Page 25: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

What sinuses can you see?

Page 26: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Waters Projection

• Waters projection demonstrates:• Cloudy maxillary

sinuses worse on left.

• Sinus infection that needed antibiotics.

Page 27: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

SMV - Sinuses

• Demonstrates sphenoid sinus

• Merrill’s p. 418

Page 28: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Temporal Mandibular Bone

• Law Method• Shuller Method• Stenver’s Method• Arcelin Method• Mayer Method• Hickey Method

Page 29: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

• These projections will not be on your boards … but review Merrill’s p 430-452

Page 30: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

PATHOLOGY

Page 31: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Fracture to Mandible and Zygomatic Arches

Page 32: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Mandibular Ramus Fracture

Page 33: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Bilateral Fractures of the Mandible

Page 34: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Film critique

Page 35: MANDIBLE, SINUSES, TEMPORAL BONE Wynn Harrison, MEd

Critical thinking