19 Questions
Which one of the following is a linear prominence or projection of bone?
Ridge
Which one of the following is a small bump or nodule of bone?
Tubercle
Which one of the following is a rounded prominence of bone?
Tuberosity
Which one of the following is an immovable joint that represents a line of union between adjoining bones of the skull?
Suture
Which type of bone in the human body is dense and appears radiopaque on a dental image?
Cortical bone
What is the composition of cancellous bone in the human body?
It is composed of numerous bony trabeculae that form a lattice-like network of intercommunicating spaces filled with bone marrow.
What enables the radiographer to accurately mount and interpret intraoral images?
Recognition of normal anatomic landmarks
Which one of the following statements is true about the coronoid process?
The coronoid process is not seen on a mandibular periapical image but may appear on a maxillary molar periapical image.
Which structure is the densest in the human body?
Enamel
What is the composition of the pulp cavity?
Blood vessels, nerves, and lymphatics
How does the alveolar crest appear in the anterior region?
Dense radiopaque line
Which of the following is true about the maxillary sinuses?
They are the size of a small pea at birth.
What is the appearance of the inferior nasal conchae on an anterior maxillary periapical image?
Radiolucent masses or projections within the nasal cavity
What is the composition of the floor of the maxillary sinus?
Dense cortical bone
Where are the genial tubercles located?
On the lingual aspect of the mandible
Which one of the following statements about the mental ridge is true?
The mental ridge is a linear prominence of bone located on the external surface of the mandible.
On a mandibular periapical image, how does the mental foramen appear?
As a small, ovoid or round radiolucent area located in the apical region of the mandibular premolar.
What is the appearance of the mandibular canal on a mandibular periapical image?
As a radiolucent band with two thin radiopaque lines outlining the canal.
Where is the mylohyoid ridge located and how does it appear on a mandibular periapical image?
On the internal surface of the mandible, appearing as a dense radiopaque band extending downward and forward from the third molar region.
Study Notes
Bony Structures
- A linear prominence or projection of bone is a crest.
- A small bump or nodule of bone is a tubercle.
- A rounded prominence of bone is a process.
Joints
- An immovable joint that represents a line of union between adjoining bones of the skull is a suture.
Bone Types
- Compact bone in the human body is dense and appears radiopaque on a dental image.
- Cancellous bone in the human body is composed of a spongy, porous structure.
Radiography
- Accurate mounting and interpretation of intraoral images are enabled by the use of a reference line.
Coronoid Process
- The coronoid process is a triangular-shaped projection of bone that serves as an attachment site for the temporalis muscle.
Density
- The densest structure in the human body is enamel.
Pulp Cavity
- The composition of the pulp cavity includes soft tissue, pulp, and nerves.
Alveolar Crest
- The alveolar crest appears as a thin, curved radiopacity in the anterior region.
Maxillary Sinuses
- The maxillary sinuses are the largest paranasal sinuses and are located in the maxillary bones.
Inferior Nasal Conchae
- The appearance of the inferior nasal conchae on an anterior maxillary periapical image is a curved, radiopaque structure.
Maxillary Sinus Floor
- The composition of the floor of the maxillary sinus is bone.
Genial Tubercles
- The genial tubercles are located on the lingual aspect of the mandible.
Mental Ridge
- The mental ridge is a bony prominence located on the labial aspect of the mandible, and it serves as an attachment site for the mentalis muscle.
Mental Foramen
- The mental foramen appears as a radiolucency on a mandibular periapical image.
Mandibular Canal
- The appearance of the mandibular canal on a mandibular periapical image is a radiolucent channel.
Mylohyoid Ridge
- The mylohyoid ridge is located on the lingual aspect of the mandible and appears as a radiopaque, curved structure on a mandibular periapical image.
Test your knowledge of maxillary periapical imaging and nasal anatomy in this quiz. Identify the radiopaque area known as the anterior nasal spine and understand the location and characteristics of the inferior nasal conchae within the nasal cavity.
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