Module 14 Flashcards
Recognition of normal landmarks on radiographs enables the clinician to?
Mount and Interpret images
What are the 2 types of bone in the human body
Cortical
Cancellous
Cortical (_____) means?
Compact bone
outer layer
Cortical bone is ______ and _____ passage of x-rays wh
dense
resists
Cortical bone appears ______ on a dental image
radiopaque (white)
Cancellous bone is the ___, ___ bone located between two layers of cortical bone
soft
spongy
Cancellous bone appears predominantly ______ on x-rays
radiolucent (black/gray)
Prominences of bone are composed of ___ bone and appear _____
dense
radiopaque
A Process is a marked __ or __ of bone
ex:
prominence
projection
coronoid process
A Ridge is a ___ prominence/projection
ex:
linear
internal oblique ridge
A Spine is a _, ___ projection
ex:
sharp
thornlike
anterior nasal spine
A turbercle is a small ____ or ____
ex:
bump
nodule
genial tubercules
A Tuberosity is a _____ prominence
ex:
rounded
Maxillary tuberosity
Spaces and Depressions in bone appear ____ due to?
radiolucent
not resisting x-rays penetration
A Canal is a ___ passageway that contians ____
ex:
tubelike
nerves/blood vessels
mandibular canal
A Foramen is a ___ in bone
ex:
hole
Mental/Lingual Foramen
A Fossa is a __, _____ _____area of bone
ex:
broad
shallow depresssed
submandibular fossa
A Sinus is a ___ space in bone
ex:
hollow
maxillary sinus
A Septum is a bony ___ that does what?
wall
divides two spaces/cavities
A septum appears ____
ex:
radiopaque
nasal septum
A Suture is an ______ _____ and is found in the ____
immovable joint
skull
A suture appears as a thin _____ line
ex:
radiolucent
palatine suture of maxilla
The upper jaw is composed of ______
two paired maxillae bones
The maxilla is described as the architectural?
corner stone of face
The Maxilla forms what 3 things
floor of orbit of eyes
sides and floor of nasal cavities
hard palate
What does Pneumatization mean?
When the floor of the sinus collapses in where a tooth is missing or has been removed.
The incisive foramen is also known as?
nasopalatine foramen
The incisive foramen is a ___ in bone located at the _____ of the ant. portion of the _____ directly ____ to the MX ______?
hole
midline
hard palate
post.
incisors
The incisive foramen is seen on an x-ray between the _____ of MX ______
roots
central incisors
What is the immovable joint between the 2 palatine processes of the maxilla
Median Palatal Suture
The Median Palatal Suture appears as a thin ____ line between MX _____
radiolucent
centrals
The median palatal suture becomes ___ with age
less distinct
What is found just inferior and medial to the infraorbital foarmen between MX canine and lateral incisors
Lateral Fossa
The lateral fossa is also called the?
Canine and incisive fossa
The Lateral Fossa appears ____ on x-rays
radiolucent
What anatomy is only visible with a MX occlusal film
Nasal Cavity or (Fossa)
Nasal Septum
Nasal Conchea
Anterior Nasal Spine
The Nasal Cavity is also called the ?
Nasal Fossa
The Nasal Cavity is __ shaped and locates __ to the maxilla
pear
superior
The Nasal Cavity appears as a large ___ area superior to the MX _____
radiolucent
incisors
What is the vertical bony wall that divides the nasal cavity left and right
nasal septum
The nasal septum appears as a _____, ___ partition and
can be superimposed over the?
Vertical
Radiopaque
Median palatal Suture
The floor of the nasal cavity is composed of ___ bone and defines the ____ border of the nasal cavity
dense cortical
inferior
The floor of the nasal cavity appears as a dense ______ band of bone superior to the _____
radiopaque
MX incisors
What is the sharp projections of the maxilla located at the inferior portion of the nasal cavity
nasal spine
The nasal spine appears as a ______ shape ___ area at teh intersection of the floor of the nasal cavity and the nasal septum
V
radiopaque
What are the wafer-thin, curved plates of bones extending from the lateral walls of the nasal cavity
Inferior Nasal Conchae
The Inferior Nasal Conchea are ______ shaped and appear as a ____ _____ mass or projection within the nasal cavity
Shell/Scroll
Diffuse Radiopaque
The Maxillary Sinuses are located Superior to Maxillary ____ and ____ teeth
premolar
molar
The floor of the maxillary sinus is composed of dense _____ bone and appears as a ____ line
cortical
radiopaque
What are the parts that supply maxillary teeth and interdental areas with blood?
Nutrient Canals
Nutrient Canals appear as ___ ____ bands surrounded by two thin ____ lines
narrow
radiolucent
radiopaque
What is the Inverted Y
intersection of the maxillary sinus and nasal cavity
The inverted Y appears as a ____ ____ Y
and is found superior to what?
radiopaque
upside-down
MX canine
What appears as a radiopaque bulge distal to the 3rd/2nd molar region on the Maxillary arch
Maxillary Tuberosity
What appears as a hooklike projection posterior to the Maxillary tuberosity region
Hamulus
What appears as a J or U shaped radiopacity above the 1st molar of the Maxillary Arch
Zygomatic Process of Maxilla
The zygoma is referred to as the ______
cheekbone
malar bone
The Ramus is the ____ portion of the mandible found posterior to ?
vertical
3rd molar
The body of the madible goes from ____ to ____ and is ___ shaped
ramus
ramus
U
What is the portion of the mandible that encases and supports the teeth
Alveolar Process
The Genial Tubercules are located on the ___ side of the madible and are __-_____ radiopacity inferior to the apices of?
lingual
ring-shaped
MN incisors
What is located near the midline and surrounded by genial tubercules
lingual foramen
The Mental Ridge extends from the _ region to the _ and slopes slightly ___
premolar
midline
upward
The Mental Ridge is seen as a __ ____ band and often is superimposed over MN ant. teeth
thick radiopaque
The mental fossa is located _ the mental ridge and is seen as a _ area
above
radiolucent
What is located on the external surface of the mandible in the region of mandibular premolars
HINT: often mistaken for periapical lesions
Mental Foramen
The mylohyoid ridge extends from the __ region ____ and ___ toward the lower border of the mandibular symphysis
molar
down
forward
What extends from the mandibular foramen to the mental foramen
Mandibular Canal
Teh Mandibular Canal is often seen _ or __ over the apices of Mandibular Molar teeth
below
superimposed
The internal oblique ridge goes from the ____ to the _ region or may continue on as the _____ ____
ramus
3rd molar
Mylohyoid Ridge
The Submandibular Fossa is located inferior to what?
Mylohyoid ridge
What bone (image) is not seeno n a mandibular PA but does appear on a maxillary molar PA
Coronoid Process of the Mandible
The Alveolar Crest is located __ to _ mm below the CEJ on an x-ray
- 5
- 0
The PDL is about ___mm wide and sits between what 2 structures?
0.5
root of tooth and Lamina dura
The Alveolar bone is __ between anterior teeth and ___ and _____between posterior teeth
pointed
flat and smooth
Is the Alveolar Crest Less Dense in Posterior region or Anterior region of mouth
Posterior