Radiology Roulette Flashcards
What color are dental Caries clinically?
Chalky White
*also brown
What is the best Radiograph to use for Interproximal Caries in the Anterior?
Posterior?
Periapicals
Bitewings
3 very Radiopaque hard tissues in Pano:
Very Radiolucent soft tissue in Pano:
Cranial Bone, Cortical Bone, Teeth
Airway
A minimum of ____% demineralization must occur before it shows up on Radiographs
55-60%
T/F
Incipient caries can be seen on Radiographs
False
How far into the Dentin does Caries have to be before we see it clinically?
1/2
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 _______
Cavitation
3 limitations of Radiographs for a Perio diagnosis:
Superimposition
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?
Supraeruption
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
2
superimposition
incipient
soft tissue
supraeruption
What image is best to show the bone height?
Vertical or Horizontal Bitewings
The Crest of Bone is normally ____ mm below the CEJ
1-2 mm
A little bit of inflammation will cause moderate deposition/resorption, causing…
Lots’ of inflammation will cause lots of Deposition/Resorption, causing…
Radiolucencies
Radiopacities
Deposition of Bone in Perio disease will lead to what?
Body laying down bone (sclerosis)
*radiopaque
Apical perio will cause _____, which will create _____ on an image
sclerosis
radiopacities
Localized Aggressive Perio will present how radiographically?
Usually seen in _____ decade
Happens to what 2 teeth?
____ bone loss and minimal amounts of _____
Vertical Defects
2nd
Mn 1M, CI’s
rapid, plaque
LAP (Localized Aggressive Perio) is known for what type of Bone Loss?
Vertical
***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?
Where?
Permanent
Mx incisors (mesiodens)
Supernumerary teeth occur in ___% of the pop. and are 2x more common in _____ (gender)
1-4%
males
What syndrome should you associate with Supernumerary Teeth?
Name 2 more:
Gardner’s Syndrome
Cleidocranial Dysplasia, pykodysostosis
Most common missing teeth
and then…
and then…
and then…
3rd molars
2nd premolars
Mx LI
Mn CI
Larger than normal teeth, rarely affects entire dentition
Macrodontia
Macrodontia in the Molars is usually increased ____ dimension
Centrals?
M/D
M/D and coronal/apical
Single tooth attempts to divide (normal tooth count if treated as one)
Gemination
Union of two adjacent teeth:
Fusion
Roots of 2 or more primary or permanent teeth are fused by Cementum
Concrescence
Disturbance is the tooth formation that produces a sharp bend or curve in the tooth anywhere in the Crown or Root:
Dilaceration
Tooth inside a Tooth:
Risk of what?
Dens Invaginatus
pulpal inflammation
Extra enamel tubercle, usually located in the Central Occlusal Area
Dens Evaginatus
Elongated body and short Roots, with pulp chamber extending apically throughout
Taurodontism
T/F
Taurodontism can happen to any tooth
True
T/F
Clinically, the distinguishing features of Taurodontism are NOT visible
True
**short “bull” roots
T/F
Taurodontism occurs with greater frequency w/ Trisomy 21, AI, and Klinefelters
True
T/F
There is Tx for Taurodontism
False
Amelogenesis Imperfecta is an anomaly arising in _____ genes involved in enamel formation
1 of 4
What are the 4 types of Amelogenesis Imperfecta?
Hypoplastic
Hypomaturation
Hypocalcification
Hypomaturation/Hypocalcification
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 _____
Thickness
yellowish brown
interproximal contact
flat
Hypomaturation A.I. the enamel looks _______ and has ____- thickness
mottled
normal
*may break away from crown, “snow capped”
Hypocalcification A.I. crown is ______ but the enamel is poorly ______
normal
mineralized
T/F
A normal explorer can penetrate Hypocalcification A.I. enamel
True
Hypocalcification A.I stains more b/c of more porous
True
Hypocalcification/Hypomaturation A.I. combo has enamel that is the same radiopacity of _______
dentin
Radiographically, A.I. has what 4 features?
Square crown
thin radiopaque layer Enamel
Low/absent cusps
multiple open contacts
4 (radiographic) characteristics of Dentinogenesis Imperfecta
Bulbous crowns
Constriction at CEJ
Short Roots
Reduced size of pulp chamber
Clinically, D.I. has ____ like translucency with Yellow to Blue Gray
Amber
Regional Odontodysplasia has a ______ appearance radiographically
Ghost like
A localized arrest in tooth development with Ghost like appearance:
Regional odontodysplasia
T/F
Regional odontodysplasia affects both enamel and dentin (hypoplastic/hypocalcified)
True
T/F
Regional odontodysplasia is hereditary
False
3 Radiographic features of Regional Odontodysplasia:
Ghost like
Thin enamel/dentin
Appear to be resorbing
Localized, radiolucent, round, oval, elongated, Sharply Defined, expansion
pulp canal same shape, surfaces affected
Internal resorption
External resorption
T/F
Once inside, it is difficult to tell if resorption began internally or externally
True
What is the hallmark sign of Osteomyelitis?
Sequestra
*internal piece of dead bone
Apical lesions, Sclerosis will appear…
What will be the most Radiolucent?
Radiopaque
Rarifying
The most Radiolucent periapical lesion is…
Radiopaque is…
Rarifying
Sclerotic
Acute Osteomyelitis is from an infection that spread where?
Originating in a ____ tooth, ____, or _____
marrow
non-vital, trauma, hematogenous
Chronic Osteomyelitis may be sequelae of _______ or may arise ____
inadequately Tx acute osteomyelitis
de novo
Chronic osteomyelitis in which metabolism tips toward increased bone formation - Sclerotic radiographs:
Diffuse sclerosing osteomyelitis
3 diseases that can cause Osteomyelitis:
Fibrous dysplasia
Paget’s
Osteosarcoma
Osteomyelitis is most likely to occur where?
Posterior Mandible
T/F
Osteoradionecrosis may cause Osteomyelitis
True
Bisphosphonates, aka…
pyrophosphates
Bisphosphonates inhibit what?
Osteoclasts
Cysts cause what 3 things?
Resorption
tipping of an involved Molar
Expansion
Cysts are Radiolucent with well defined Margins and are ___ to ____ in size
5 mm
several cm
*can displace or resorb roots
What is the most common type of cyst found in the jaw that a dentist will see?
Radicular Granuloma/Cyst
A Radicular Granuloma is more common where?
Maxilla
What is the more common cyst, Radicular Granuyloma or KCOT?
Radicular Granuloma
KCOT is a Cyst derived from ______
KCOT, aka…
Dental Lamina
Keratocystic odontogenic tumor
KCOT can be found anywhere, anytime
True
KCOT has mild expansion, male predominance, and a high ____ rate
Recurrence
- is highly aggressive
- related to Gorlin Syndrome
KCOT is diagnosed by the appearance of a ___ , not its contents
cyst wall
% time KCOT found Posterior body of Mn:
% time KCOT found in the Ramus:
90%
50%
Where is KCOT found in relation to the IA canal?
superior
*similar to dentigerous cyst
The borders of KCOT are ____ defined
well
*corticated
The internal structure of KCOT is _______ despite its keratin
while the borders are ____ and well defined
Radiolucent
corticated
A Simple Bone Cyst is lined with what?
contents:
No ____ lining, so not a True Cyst
Connective Tissue
empty or fluid
epithelial
Simple Bone Cyst may be seen as a _______aberration in normal bone remodeling or metabolism
localized
Enostosis = Idiopahtic focal osteosclerosis = dense bony island
True
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
Direct
Because Benign Tumors enlarge slowly, their borders are relatively ______ and well defined and *sometimes ________
smooth
*sometimes corticated
T/F
Benign tumors can be radiolucent, radiopaque, or mixed
True
The rare exception of a Benign Tumor that metastasizes:
*can spread to the brain
Ameloblastoma
Enostosis (DBI) has apical root resorption and uniform ____
Exostosis is a Radiopacity ____ the jaw
PDL
Outside
Homogenous, well define Radiopacity Outside the jaw:
Exostosis
What are the 2 lesions that have a Sunray, Speckled bone pattern
Osteogenic sarcoma
Hemangioma
An osteoblastoma may be a well defined ______
*along with Hemangioma, it is _____
osteogenic sarcoma
*sunray, speckled
