CDCA Exam with all Correct & 100% Verified Answers |
Actual Complete Exam |Already Graded A+
Dens invaginatus (dens in dente) ✔Correct Answer-"tooth with in a tooth"- conditions found
in teeth where the outer surface folds inward (inside)
Dens Evaginatus ✔Correct Answer-condition found in teeth where the outer surface appears
to form an extra bump or cusp. (premolars are most likely to be affected) (outside)
indicator of Perio through radiographs ✔Correct Answer--HZ bone loss
-VA bone loss
-or thin or none lamina dura
Recurrent decay ✔Correct Answer-Visible as a radiolucency present under an already placed
restoration
Condyle and Coronoid process ✔Correct Answer-from outside in- alphabetical
coN
coR
Zygomatic process ✔Correct Answer-"molar bone" also known as the U shape or Zygoma
(dont get confused with border or maxillary sinus)
Externat oblique ridge ✔Correct Answer-Radiopaque line visible on mandible typically seen
when 3rd molars are in the shot
genial tubercles ✔Correct Answer-A ring-shaped radiopacity below the apices of the
mandibular incisors
Recent extraction site ✔Correct Answer-Following normal tooth extraction, the extraction
socket is clearly demarcated by the radiopaque bundle bone into which the periodontal
ligaments had anchored the tooth. A radiographic image of. Note the clear outline of the root
socket. With healing, new bone is deposited into the socket, and, with time, the bundle bone
slowly fades. After about 18 months, it can no longer be distinguished from the surrounding
tissues.
Palatal and Mandibular Tori ✔Correct Answer-seen radiographically as a radiopaque images
above maxillary incisors and mandibular lateral incisors
Mesiodens ✔Correct Answer--supernumerary tooth present in the midline between the two
central incisors
,- Mesiodens usually results in oral problems such as malocclusion, food impaction, poor
aesthetics, and cyst formation
Concrescence ✔Correct Answer-A condition of teeth where the cementum overlying the
roots of at least two teeth join together
-The cause can sometimes be attributed to trauma or crowding of teeth
-Surgical separation of the teeth may be necessary if one needs to be extracted
Taurodontism ✔Correct Answer-A condition found in the molar teeth whereby the body of
the tooth and pulp chamber is enlarged vertically at the expense of the roots
-As a result, the floor of the pulp and the furcation of the tooth is moved apically down the root
-The underlying mechanism of taurodontism is the failure or late invagination of Hertwig's
epithelial root sheath, which is responsible for root formation and shaping causing an apical
shift of the root furcation
mental foramen ✔Correct Answer-radiolucency often seen below or near the apex of the
mandibular premolars
lateral periodontal cyst/abscess ✔Correct Answer-often between the two mandibular
premolars or on the mesial side of the mandibular first premolar. The lateral periodontal cyst is
higher on the root than the mental foramen and CANNOT be probed
(seems to be much darker)
Common radiology errors ✔Correct Answer-Examples of errors that you may need to identify
on the exam:
Film too light
Film too dark
Cone-cut
Overlap
Patient Movement
Too much air space (from tongue not touching the palate)
Pan- When the chin is tipped too high this results in ✔Correct Answer-Flat occlusal plane
Pan- when the chin is tipped too low this results in ✔Correct Answer-excessive curving of the
occlusal plane (looks like the joker)
Pan- when in a slumped position this results in ✔Correct Answer-Ghost image (you can see
their spine over the teeth)
Superimposition ✔Correct Answer-(most common on lower anteriors)
Same thing as double exposure
-when the receptor is exposed twice and two images appear superimposed onto each other
, Film placed backwards in the mouth ✔Correct Answer-appearance of a Herringbone, or tire
track pattern
Film is too light ✔Correct Answer--*Insufficient radiation exposure*
-Insufficient developing time
-Use of an overused developing solution
-Use of a developing solution that is too cold
Film that is dark (can be on one side rather than entire film) ✔Correct Answer-due to light
exposure
patient movement ✔Correct Answer-causes a blurry or fuzzy image
-Prevention of this error can be aided by continuing to inform the patient, throughout the
exposure, of the progress of the unit around their head while instructing the patient to remain
still
Penumbra ✔Correct Answer-A blurred edge to an image, a halo effect, in an x-ray film caused
usually by an overlarge focal spot exacerbated by a long object-to-film distance
Thyroid collar ✔Correct Answer-If you are taking a panoramic radiograph on a patient, they
should NOT be wearing a thyroid collar
Digital film is ✔Correct Answer-faster than F speed film
What can a panoramic radiograph best detect? ✔Correct Answer-3rd molars, or cysts/tumors
Incisive canal Vs. Incisive formen ✔Correct Answer-Incisive canal is above Foramen and is
radiopaque while foramen is radiolucent
If #8 and #9 are present, and so are the permanent first molars, then the patient is ✔Correct
Answer-at least 6 years old in most cases
If the lower permanent canines are erupted ✔Correct Answer-the patient is most likely
around age 9 to 10
impacted vs. not erupted ✔Correct Answer-If the adjacent teeth are blocking the tooth from
erupting, then the tooth is impacted. If the tooth is not impacted the answer will be delayed
eruption
If you see permanent premolars erupting into the mouth and the primary molars have
exfoliated or are near exfoliation, then the approximate age is ✔Correct Answer-10-12
Enamel ✔Correct Answer-Makes up the protective outer surface of the crown of the tooth
Actual Complete Exam |Already Graded A+
Dens invaginatus (dens in dente) ✔Correct Answer-"tooth with in a tooth"- conditions found
in teeth where the outer surface folds inward (inside)
Dens Evaginatus ✔Correct Answer-condition found in teeth where the outer surface appears
to form an extra bump or cusp. (premolars are most likely to be affected) (outside)
indicator of Perio through radiographs ✔Correct Answer--HZ bone loss
-VA bone loss
-or thin or none lamina dura
Recurrent decay ✔Correct Answer-Visible as a radiolucency present under an already placed
restoration
Condyle and Coronoid process ✔Correct Answer-from outside in- alphabetical
coN
coR
Zygomatic process ✔Correct Answer-"molar bone" also known as the U shape or Zygoma
(dont get confused with border or maxillary sinus)
Externat oblique ridge ✔Correct Answer-Radiopaque line visible on mandible typically seen
when 3rd molars are in the shot
genial tubercles ✔Correct Answer-A ring-shaped radiopacity below the apices of the
mandibular incisors
Recent extraction site ✔Correct Answer-Following normal tooth extraction, the extraction
socket is clearly demarcated by the radiopaque bundle bone into which the periodontal
ligaments had anchored the tooth. A radiographic image of. Note the clear outline of the root
socket. With healing, new bone is deposited into the socket, and, with time, the bundle bone
slowly fades. After about 18 months, it can no longer be distinguished from the surrounding
tissues.
Palatal and Mandibular Tori ✔Correct Answer-seen radiographically as a radiopaque images
above maxillary incisors and mandibular lateral incisors
Mesiodens ✔Correct Answer--supernumerary tooth present in the midline between the two
central incisors
,- Mesiodens usually results in oral problems such as malocclusion, food impaction, poor
aesthetics, and cyst formation
Concrescence ✔Correct Answer-A condition of teeth where the cementum overlying the
roots of at least two teeth join together
-The cause can sometimes be attributed to trauma or crowding of teeth
-Surgical separation of the teeth may be necessary if one needs to be extracted
Taurodontism ✔Correct Answer-A condition found in the molar teeth whereby the body of
the tooth and pulp chamber is enlarged vertically at the expense of the roots
-As a result, the floor of the pulp and the furcation of the tooth is moved apically down the root
-The underlying mechanism of taurodontism is the failure or late invagination of Hertwig's
epithelial root sheath, which is responsible for root formation and shaping causing an apical
shift of the root furcation
mental foramen ✔Correct Answer-radiolucency often seen below or near the apex of the
mandibular premolars
lateral periodontal cyst/abscess ✔Correct Answer-often between the two mandibular
premolars or on the mesial side of the mandibular first premolar. The lateral periodontal cyst is
higher on the root than the mental foramen and CANNOT be probed
(seems to be much darker)
Common radiology errors ✔Correct Answer-Examples of errors that you may need to identify
on the exam:
Film too light
Film too dark
Cone-cut
Overlap
Patient Movement
Too much air space (from tongue not touching the palate)
Pan- When the chin is tipped too high this results in ✔Correct Answer-Flat occlusal plane
Pan- when the chin is tipped too low this results in ✔Correct Answer-excessive curving of the
occlusal plane (looks like the joker)
Pan- when in a slumped position this results in ✔Correct Answer-Ghost image (you can see
their spine over the teeth)
Superimposition ✔Correct Answer-(most common on lower anteriors)
Same thing as double exposure
-when the receptor is exposed twice and two images appear superimposed onto each other
, Film placed backwards in the mouth ✔Correct Answer-appearance of a Herringbone, or tire
track pattern
Film is too light ✔Correct Answer--*Insufficient radiation exposure*
-Insufficient developing time
-Use of an overused developing solution
-Use of a developing solution that is too cold
Film that is dark (can be on one side rather than entire film) ✔Correct Answer-due to light
exposure
patient movement ✔Correct Answer-causes a blurry or fuzzy image
-Prevention of this error can be aided by continuing to inform the patient, throughout the
exposure, of the progress of the unit around their head while instructing the patient to remain
still
Penumbra ✔Correct Answer-A blurred edge to an image, a halo effect, in an x-ray film caused
usually by an overlarge focal spot exacerbated by a long object-to-film distance
Thyroid collar ✔Correct Answer-If you are taking a panoramic radiograph on a patient, they
should NOT be wearing a thyroid collar
Digital film is ✔Correct Answer-faster than F speed film
What can a panoramic radiograph best detect? ✔Correct Answer-3rd molars, or cysts/tumors
Incisive canal Vs. Incisive formen ✔Correct Answer-Incisive canal is above Foramen and is
radiopaque while foramen is radiolucent
If #8 and #9 are present, and so are the permanent first molars, then the patient is ✔Correct
Answer-at least 6 years old in most cases
If the lower permanent canines are erupted ✔Correct Answer-the patient is most likely
around age 9 to 10
impacted vs. not erupted ✔Correct Answer-If the adjacent teeth are blocking the tooth from
erupting, then the tooth is impacted. If the tooth is not impacted the answer will be delayed
eruption
If you see permanent premolars erupting into the mouth and the primary molars have
exfoliated or are near exfoliation, then the approximate age is ✔Correct Answer-10-12
Enamel ✔Correct Answer-Makes up the protective outer surface of the crown of the tooth
