Flashcards in Radiology Roulette Deck (90):
What color are dental Caries clinically?
What is the best Radiograph to use for Interproximal Caries in the Anterior?
3 very Radiopaque hard tissues in Pano:
Very Radiolucent soft tissue in Pano:
Cranial Bone, Cortical Bone, Teeth
A minimum of ____% demineralization must occur before it shows up on Radiographs
Incipient caries can be seen on Radiographs
How far into the Dentin does Caries have to be before we see it clinically?
Incipient caries are ____ thickness of Enamel
Moderate caries are _____ thickness of Enamel and do not involve the ______
Advanced Caries are _____ distance to Pulp Cavity
Severe Caries are _____ distance to Pulp Cavity
less than 1/2
more than 1/2
less than 1/2 (Enamel + Dentin)
more than 1/2
Clinically, Severe Caries appears as a _______
3 limitations of Radiographs for a Perio diagnosis:
No soft tissue of periodontium
Cemento-enamel Junction used as landmark for measuring bone loss
Cemento-enamel Junction (CEJ) can't be used as diagnostic in imagery if what has occurred?
Image limitations for Perio: radiographs ____ dimensional
Details lost due to _______
Radiographs don't demonstrate ______ disease (need 55-60% demineralization)
Radiographs don't show ______
CEJ not valid if ______ has occurred
What image is best to show the bone height?
Vertical or Horizontal Bitewings
The Crest of Bone is normally ____ mm below the CEJ
A little bit of inflammation will cause moderate deposition/resorption, causing...
Lots' of inflammation will cause lots of Deposition/Resorption, causing...
Deposition of Bone in Perio disease will lead to what?
Body laying down bone (sclerosis)
Apical perio will cause _____, which will create _____ on an image
Localized Aggressive Perio will present how radiographically?
Usually seen in _____ decade
Happens to what 2 teeth?
____ bone loss and minimal amounts of _____
Mn 1M, CI's
LAP (Localized Aggressive Perio) is known for what type of Bone Loss?
***localized and vertical
Uncontrolled Diabetes will result in what on a radiograph?
Alveolar bone loss
*"bone loss and destruction of alveolar bone"
Supernumerary teeth are more likely to occur in what Dentition?
Mx incisors (mesiodens)
Supernumerary teeth occur in ___% of the pop. and are 2x more common in _____ (gender)
What syndrome should you associate with Supernumerary Teeth?
Name 2 more:
Cleidocranial Dysplasia, pykodysostosis
Most common missing teeth
Larger than normal teeth, rarely affects entire dentition
Macrodontia in the Molars is usually increased ____ dimension
M/D and coronal/apical
Single tooth attempts to divide (normal tooth count if treated as one)
Union of two adjacent teeth:
Roots of 2 or more primary or permanent teeth are fused by Cementum
Disturbance is the tooth formation that produces a sharp bend or curve in the tooth anywhere in the Crown or Root:
Tooth inside a Tooth:
Risk of what?
Extra enamel tubercle, usually located in the Central Occlusal Area
Elongated body and short Roots, with pulp chamber extending apically throughout
Taurodontism can happen to any tooth
Clinically, the distinguishing features of Taurodontism are NOT visible
**short "bull" roots
Taurodontism occurs with greater frequency w/ Trisomy 21, AI, and Klinefelters
There is Tx for Taurodontism
Amelogenesis Imperfecta is an anomaly arising in _____ genes involved in enamel formation
1 of 4
What are the 4 types of Amelogenesis Imperfecta?
Hypoplastic A.I. the enamel fails to develop to normal ______
Color of the Dentis is _____
Enamel can be rough, pitted, smooth, or glossy, but thre is loss of _____
Cusps are _____
Hypomaturation A.I. the enamel looks _______ and has ____- thickness
*may break away from crown, "snow capped"
Hypocalcification A.I. crown is ______ but the enamel is poorly ______
A normal explorer can penetrate Hypocalcification A.I. enamel
Hypocalcification A.I stains more b/c of more porous
Hypocalcification/Hypomaturation A.I. combo has enamel that is the same radiopacity of _______
Radiographically, A.I. has what 4 features?
thin radiopaque layer Enamel
multiple open contacts
4 (radiographic) characteristics of Dentinogenesis Imperfecta
Constriction at CEJ
Reduced size of pulp chamber
Clinically, D.I. has ____ like translucency with Yellow to Blue Gray
Regional Odontodysplasia has a ______ appearance radiographically
A localized arrest in tooth development with Ghost like appearance:
Regional odontodysplasia affects both enamel and dentin (hypoplastic/hypocalcified)
Regional odontodysplasia is hereditary
3 Radiographic features of Regional Odontodysplasia:
Appear to be resorbing
Localized, radiolucent, round, oval, elongated, Sharply Defined, expansion
pulp canal same shape, surfaces affected
Once inside, it is difficult to tell if resorption began internally or externally
What is the hallmark sign of Osteomyelitis?
*internal piece of dead bone
Apical lesions, Sclerosis will appear...
What will be the most Radiolucent?
The most Radiolucent periapical lesion is...
Acute Osteomyelitis is from an infection that spread where?
Originating in a ____ tooth, ____, or _____
non-vital, trauma, hematogenous
Chronic Osteomyelitis may be sequelae of _______ or may arise ____
inadequately Tx acute osteomyelitis
Chronic osteomyelitis in which metabolism tips toward increased bone formation - Sclerotic radiographs:
Diffuse sclerosing osteomyelitis
3 diseases that can cause Osteomyelitis:
Osteomyelitis is most likely to occur where?
Osteoradionecrosis may cause Osteomyelitis
Bisphosphonates inhibit what?
Cysts cause what 3 things?
tipping of an involved Molar
Cysts are Radiolucent with well defined Margins and are ___ to ____ in size
*can displace or resorb roots
What is the most common type of cyst found in the jaw that a dentist will see?
A Radicular Granuloma is more common where?
What is the more common cyst, Radicular Granuyloma or KCOT?
KCOT is a Cyst derived from ______
Keratocystic odontogenic tumor
KCOT can be found anywhere, anytime
KCOT has mild expansion, male predominance, and a high ____ rate
*is highly aggressive
*related to Gorlin Syndrome
KCOT is diagnosed by the appearance of a ___ , not its contents
% time KCOT found Posterior body of Mn:
% time KCOT found in the Ramus:
Where is KCOT found in relation to the IA canal?
*similar to dentigerous cyst
The borders of KCOT are ____ defined
The internal structure of KCOT is _______ despite its keratin
while the borders are ____ and well defined
A Simple Bone Cyst is lined with what?
No ____ lining, so not a True Cyst
empty or fluid
Simple Bone Cyst may be seen as a _______aberration in normal bone remodeling or metabolism
Enostosis = Idiopahtic focal osteosclerosis = dense bony island
What is associated with Apical Root Resorption of a vital tooth and the Perio Membrane Spce is uniform?
Enostosis/idiopathic focal osteosclerosis/DBI
Benign tumors spread by ____ extension, so they are NOT metastases
Because Benign Tumors enlarge slowly, their borders are relatively ______ and well defined and *sometimes ________
Benign tumors can be radiolucent, radiopaque, or mixed
The rare exception of a Benign Tumor that metastasizes:
*can spread to the brain
Enostosis (DBI) has apical root resorption and uniform ____
Exostosis is a Radiopacity ____ the jaw
Homogenous, well define Radiopacity Outside the jaw:
What are the 2 lesions that have a Sunray, Speckled bone pattern