26 Questions
Which area is most likely to elicit the gag reflex when stimulated?
Soft palate
What reactions occur before the gag reflex is initiated?
Cessation of respiration and muscle contractions in the throat and abdomen
Which receptor placement is the most likely to elicit the gag reflex?
Maxillary molar
Which type of imaging is used to view large areas of the jaws and the skull?
Extraoral imaging
What is the most popular extraoral projection used in general dental practices?
Panoramic image
Which type of film is typically used for extraoral imaging?
8 × 10 inch film
What is the purpose of using a grid in extraoral imaging?
To reduce the amount of scatter radiation
Which type of dental image is preferred for children with primary or transitional dentition?
Periapical projection
Which technique is recommended for examining the edentulous patient with severely resorbed alveolar ridges?
Bisecting technique
Which type of dental image is commonly used for examining the edentulous jaw?
Panoramic image
What is the branch of dentistry concerned with the diagnosis and treatment of diseases of the dental pulp within the tooth?
Endodontics
Which of the following can help desensitize the tissues in the area and suppress the gag reflex during receptor placement and exposure?
Rubbing a finger along the tissues near the intended area
If a patient has an uncontrollable gag reflex, what type of image should the dental radiographer try to obtain?
Extraoral bite-wings
What should the dental radiographer do if the patient starts gagging upon receptor placement?
Remove the receptor as quickly as possible
How should the dental radiographer communicate with a patient who is blind or visually impaired?
Use gestures or sign language
Which structures are examined in temporomandibular joint tomography?
Condyle, articular eminence, and glenoid fossa
What does tomography technique accomplish in TMJ tomography?
Shows structures located within a selected plane of tissue
What determines the plane of the head that will be imaged in TMJ tomography?
Location of the rotation point
Which projection is used to evaluate the maxillary sinus area, as well as demonstrate the frontal and ethmoid sinuses, the orbits, and the nasal cavity?
Waters projection
What is the purpose of the submentovertex projection?
To identify the position of the condyles and evaluate fractures of the zygomatic arch
Which projection is used to identify fractures of the condylar neck and ramus area?
Reverse Towne projection
What is the purpose of the transcranial projection?
To evaluate the superior surface of the condyle and the articular eminence
Which projection is used to evaluate impacted teeth, fractures, and lesions located in the body of the mandible?
Lateral Jaw - Body of Mandible
Which projection is used to evaluate impacted third molars, large lesions, and fractures that extend into the ramus of the mandible?
Lateral Jaw - Ramus of Mandible
Which projection is used to evaluate facial growth and development, trauma, and disease and developmental abnormalities, and demonstrates the bones of the face and skull as well as the soft tissue profile of the face?
Lateral Cephalometric Projection
Which projection is used to evaluate facial growth and development, trauma, and disease and developmental abnormalities, and demonstrates the frontal and ethmoid sinuses, the orbits, and the nasal cavity?
Posteroanterior Projection
Test your knowledge about the Waters projection, a radiographic technique used to evaluate the maxillary sinus area, frontal and ethmoid sinuses, orbits, and nasal cavity. Learn about proper head positioning and receptor placement in this quiz.
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