facial/nasal bones, mandible, TMJ

how many facial bones?

14

list facial bones

R/L nasal

R/L lacrimal

R/L maxillary

R/L zygomatic

R/L palantine

R/L inferior nasal conchae

Vomer

Mandible

2 __ bones form the bridge of the nose

nasal

2 __ are the smallest bones in the skull

lacrimal

each lacrimal bone contains a __ through which a tear duct passes

lacrimal foramen

2 __ bones are the largest of the immovable bones of the face

maxillary

each maxillary bone articulates with all other facial bones except

mandible

each maxillary sinus and an

infraorbital foramen

__supports roots of the teeth is at inferior border of maxillae

alveolar process

at anterior midsagittal border, maxilla join at

anterior nasal spine

midpoint of anterior nasal spine

acanthion

__ bones form the prominence of the cheeks

zygomatic

temporal process extends posteriorly and joins zygomatic process of temporal bone to form

zygomatic arch

2 __ bones composed of vertical and horizontal plates

palatine

2 __ extend from the lateral walls of the lower third of nasal cavity

inferior nasal conchae

inferior nasal conchae are easily distinguished due to their

scroll like appearance

a thin plate of bone which forms the inferior part of the nasal septum

vomer

largest and densest bone of the face

mandible

small and U-shaped. It is the only bone that does not articulate with any other bone

hyoid

hyoid bone divided into

-body

-two greater cornua

-two lesser cornea

orbit made of how many different bones

7

bilateral horizontal fractures of the maxillae

le fort fracture

fracture of the zygomatic arch and orbital floor or rim and dislocation of the frontozygomatic suture

tripod fracture

dysfunction of the temporomandibular joint

TMJ syndrome

largest and densest bone of face

mandible

curved horizontal portion

body of mandible

two vertical portions on each side of body

mandibular rami

junction of body and ramus

angle of mandible, gonion

anterior, triangular prominence

mental protuberance

most anterior and central part where left and right halves of
mandible fuse

symphysis

superior border of body; consists of spongy bone that support roots of teeth

alveolar process

small openings on each side below the second premolar; transmits nerves and blood vessels

mental foramina

anterior process on top of ramus

coronoid process

posterior process on top of ramus; articulates with mandibular
fossa of temporal bone to form temporomandibular joint

condylar process

concave area at top of ramus between coronoid and condylar
processes

mandibular notch

panoramic tomography also called

pantomography

rotational tomography

panoramic tomography are techniques to produce

tomograms of curved surfaces

panoramic tomography provides a panoramic image of the

-entire mandible

-both dental arches

only structures near __ are sharply defined (panoramic tomography)

axis of rotation

-A specially designed chair mounted on a turntable
-A second turntable to support a 4x10 inch IR
-Seated patient and the film are rotated in opposite directions at the same speed

stationary tube

in both types of panoramic, beam is collimated at

tube aperture by lead diaphragm

a corresponding slit is fixed between the patient and the IR so that

the patient and IR rotate

rotation times vary from __ so a long exposure time is needed

10-20 seconds

radiation exposure is limited to

the skin surface that is passing by the narrow vertical slit aperture

the procedure provides a distortion free lateral image of the

entire mandible

in TMJ, closed mouth projection __ should be in contact not __

posterior teeth

incisors

TMJ, open mouth projection, mouth open wide without

mandible jutted forward

if pt is trauma, pt is examined how?

tomography