DARBY EXAM REVIEW QUESTIONS AND
100% CORRECT ANSWERS
1. Which type of caries is visible on teeth #3 and 14?
a. Interproximal
b. Occlusal
c. Buccal/lingual
d. Root
B. Severe occlusal caries is visible on teeth #3 and 14; large radiolucencies are visible in the
center of the crowns of these teeth.
A. The interproximal region does not appear to reveal caries.
C. The buccal/lingual regions do not appear to reveal caries.
D. Root caries does not involve enamel, and that is not the situation with this patient.
2. Which type of caries is visible on tooth #29?
a. No caries are visible.
b. Interproximal
c. Occlusal
d. Root
B. An interproximal carious lesion is present on the mesial of tooth #29.
.
3. Which restorative material is seen on tooth #9?
a. Guttapercha and metal crown
b. Silver points and all-porcelain crown
c. Guttapercha and composite
d. Post-and-core restoration
A. Gutta percha and a metal crown are the restorative materials seen on tooth #9. The endodontic
filling material is clay-like and slightly less radiopaque, which is indicative of gutta percha. The
crown is mostly radiopaque, indicating a type of metal.
,4. The arrow is pointing to which radiopaque structure?
a. Internal oblique ridge
b. Mandibular canal
c. Condensing bone
d. Descending ramus
A. The arrow is pointing to the internal oblique ridge, a radiopaque prominence of bone seen on
the lingual surface of the mandible that extends downward and forward from the ramus.
B. The mandibular canal is a radiolucent structure.
C. Condensing bone is not visible on this panoramic image.
D. The descending ramus is located posterior to the arrow in this image.
5. In addition to the panoramic image, which intraoral radiographs would be most
beneficial for the total care of this patient?
a. Maxillary and mandibular occlusal radiographs
b. Four horizontal bite-wing radiographs
c. Four vertical bite-wing radiographs
d. A full-mouth series
Use Fig. 6-35 to answer questions 6 and 7.
. D. Because of the caries, periodontal disease, missing teeth, and numerous restorations, a full-
mouth series would be required to completely evaluate this patient.
A. Occlusal radiographs would not give enough information regarding this patient's dental
condition.
B and C. Bite-wing radiographs would not give enough information regarding this patient's
dental condition.
6. All the anatomical landmarks may be viewed on this radiograph EXCEPT
a. incisive foramen.
b. median palatal suture.
c. maxillary torus.
d. inferior nasal conchae.
, C. The maxillary torus is not visible on this periapical image.
A. The radiolucent incisive foramen is visible between the roots of teeth #8 and #9.
B. The median palatal suture is the vertical radiolucent line between the roots of teeth #8 and #9.
D. The inferior nasal conchae are the diffuse radiopacities seen within the nasal cavity
7. The yellow arrow is pointing to a V-shaped radiopacity. What is this radiographic
finding?
a. Anterior nasal spine
b. Nasal septum
c. Nutrient canal
d. Root fracture
A. The anterior nasal spine is a V-shaped radiopacity visible on maxillary anterior periapical
images.
B. The nasal septum is a vertical radiopaque division of the nasal cavity.
C. Nutrient canals are not visible in this area of the maxilla.
D. A root fracture is not present but would appear as a radiolucent line.
Use Fig. 6-36 to answer questions 8 to 10.
8. Which tooth has been extracted and is not visible on this periapical image?
a. #4
b. #5
c. #12
d. #13
C. Tooth #12 has been extracted.
A. This periapical image is a view of the maxillary left quadrant; therefore, tooth #4 is not
visible.
B. This periapical image is a view of the maxillary left quadrant; therefore, tooth #5 is not
visible.
D. The maxillary premolar that is seen on this image demonstrates one root, which is tooth #13.
100% CORRECT ANSWERS
1. Which type of caries is visible on teeth #3 and 14?
a. Interproximal
b. Occlusal
c. Buccal/lingual
d. Root
B. Severe occlusal caries is visible on teeth #3 and 14; large radiolucencies are visible in the
center of the crowns of these teeth.
A. The interproximal region does not appear to reveal caries.
C. The buccal/lingual regions do not appear to reveal caries.
D. Root caries does not involve enamel, and that is not the situation with this patient.
2. Which type of caries is visible on tooth #29?
a. No caries are visible.
b. Interproximal
c. Occlusal
d. Root
B. An interproximal carious lesion is present on the mesial of tooth #29.
.
3. Which restorative material is seen on tooth #9?
a. Guttapercha and metal crown
b. Silver points and all-porcelain crown
c. Guttapercha and composite
d. Post-and-core restoration
A. Gutta percha and a metal crown are the restorative materials seen on tooth #9. The endodontic
filling material is clay-like and slightly less radiopaque, which is indicative of gutta percha. The
crown is mostly radiopaque, indicating a type of metal.
,4. The arrow is pointing to which radiopaque structure?
a. Internal oblique ridge
b. Mandibular canal
c. Condensing bone
d. Descending ramus
A. The arrow is pointing to the internal oblique ridge, a radiopaque prominence of bone seen on
the lingual surface of the mandible that extends downward and forward from the ramus.
B. The mandibular canal is a radiolucent structure.
C. Condensing bone is not visible on this panoramic image.
D. The descending ramus is located posterior to the arrow in this image.
5. In addition to the panoramic image, which intraoral radiographs would be most
beneficial for the total care of this patient?
a. Maxillary and mandibular occlusal radiographs
b. Four horizontal bite-wing radiographs
c. Four vertical bite-wing radiographs
d. A full-mouth series
Use Fig. 6-35 to answer questions 6 and 7.
. D. Because of the caries, periodontal disease, missing teeth, and numerous restorations, a full-
mouth series would be required to completely evaluate this patient.
A. Occlusal radiographs would not give enough information regarding this patient's dental
condition.
B and C. Bite-wing radiographs would not give enough information regarding this patient's
dental condition.
6. All the anatomical landmarks may be viewed on this radiograph EXCEPT
a. incisive foramen.
b. median palatal suture.
c. maxillary torus.
d. inferior nasal conchae.
, C. The maxillary torus is not visible on this periapical image.
A. The radiolucent incisive foramen is visible between the roots of teeth #8 and #9.
B. The median palatal suture is the vertical radiolucent line between the roots of teeth #8 and #9.
D. The inferior nasal conchae are the diffuse radiopacities seen within the nasal cavity
7. The yellow arrow is pointing to a V-shaped radiopacity. What is this radiographic
finding?
a. Anterior nasal spine
b. Nasal septum
c. Nutrient canal
d. Root fracture
A. The anterior nasal spine is a V-shaped radiopacity visible on maxillary anterior periapical
images.
B. The nasal septum is a vertical radiopaque division of the nasal cavity.
C. Nutrient canals are not visible in this area of the maxilla.
D. A root fracture is not present but would appear as a radiolucent line.
Use Fig. 6-36 to answer questions 8 to 10.
8. Which tooth has been extracted and is not visible on this periapical image?
a. #4
b. #5
c. #12
d. #13
C. Tooth #12 has been extracted.
A. This periapical image is a view of the maxillary left quadrant; therefore, tooth #4 is not
visible.
B. This periapical image is a view of the maxillary left quadrant; therefore, tooth #5 is not
visible.
D. The maxillary premolar that is seen on this image demonstrates one root, which is tooth #13.
