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Dental radiology Test | Questions with Answers Verified 100% Correct
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Dental radiology Test | Questions with Answers Verified 100% Correct
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Dental radiology Test | Questions with AnswersVerified 100% Correct
Anterior nasal septum - ✔✔a triangular projection from the floor of the nasal fossa located
at the junction of the nasal fossa and nasal septum. Appears as a v-shaped radiopaque area on
periapical radiographs of maxillary incisor region
Nasal septum - ✔✔Bone structure that divides the right and left nasal fossa. Portion that is
visible is the vomer bone.
submandibular fossa - ✔✔Depression in the bone on the lingual side of the mandible in
which the submandibular salivary glands are located. Appears as a large radiolucent area
proximal to the roots of the molar region on mandibular periapical radiographs.
mylohyoid ridge - ✔✔Linear prominence of the bone on the internal aspect of the mandible.
The muscle attatches to the ridge which extends inferior and anterior from the lower border of
the mandibular symphysis. Appears as radiopaque band that may be superimposed over the
roots of the mandibular teeth
genial tubercles - ✔✔small donut shaped rings of tiny spines of bone that surround the
lingual foramen and are located near the midline on the internal aspect of the mandible.
Appears radiopaque on mandibular incisor periapical radiographs
lingual foramen - ✔✔small opening located in the midline of the internal aspect of the
mandible through which a branch of the incisive artery travels. Appears as a small radiolucent
dot in the center of the radiopaque rings of the genial tubercles.
Incisive foramen - ✔✔Pear shaped opening in bone located at the midline of the anterior
hard palate, behind the central incisors. The nasopalatine nerve and vessels exit the maxilla
from the foramen. Appears radiolucent on maxillary incisor periapical radiographs.
, median palatal suture - ✔✔Line of fusion between the palatine process of the right and left
maxilla. Appears as a radiolucent vertical line between the roots of the maxillary incisors which
extends to the posterior area of the hard palate on maxillary periapical radiographs
hamulus/hamular process - ✔✔Small, hook-shaped portion of bone extending from the
sphenoid bone down and located behind the maxillary tuberosity region.
enamel - ✔✔the calcified structure that covers the crown of the tooth and protects the
dentin. The hardest calcified tissue in the human body.
dentin - ✔✔mineralized tissue that makes up the entire body of the tooth and extends the
entire length of the tooth to protect the pulp. Covered by enamel at the crown of the tooth and
by cementum at the root. Harder than bone and cementum but not as hard as enamel. Visible
in both the crown and root of the tooth.
- Appears less radiopaque than enamel.
dentinoenamel junction - ✔✔the line of demarcation where the enamel and dentin meet.
- Not distinguishabke on an x-ray
pulp - ✔✔the interior of the tooth that contains nerves, blood vessels, and lymphatic tissue.
- Appears radiolucent.
periodontal ligament - ✔✔connective tissue that supports and suspends the teeth in their
position within the dental arch. Generally the fibers attach to the lamina dura, lining bone of
the tooth socket (alveolus) and the cementum of the root.
- appears as a radiolucent line between the cementum and the lamina dura of the alveolar
bone.
alveolar bone - ✔✔bone that surrounds and supports the tooth in its potition in the jaw.
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