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RAD ch. 18
Terms in this set (32)
The primary benefit of using film holders with the bisecting technique is:
Reducing the patient's exposure to radiation
The recommended posterior periapical exposure sequence for the bisecting technique is to begin with the:
Maxillary right quadrant
According to the text, the disadvantages of the bisecting technique outweigh the advantages. Therefore, the paralleling technique is preferred over the bisecting technique for exposure of periapical films and should be used whenever possible.
Both statements are true.
With size 2 film, a total of ____ anterior film placements are used in the bisecting technique.
With the bite-wing technique, the vertical angulation is predetermined; the central ray is directed at ____ degrees to the occlusal plane
When Rinn BAI instruments are used, "BAI" refers to which of the following?
Bisecting, angle, instrument
With the ____ technique, the vertical angulation is determined by the imaginary bisector; the central ray is directed perpendicular to the imaginary bisector.
Which of the following commercially available film holders are recommended for use with either the paralleling or the bisecting technique?
1. Rinn XCP instruments
2. Rinn BAI instruments
3. Precision film holder
4. Stabe bite-block
5. EEZEE-Grip film holder
2, 4, 5
With the bisecting technique, the recommended vertical angulation range for mandibular molars is ____ degrees.
-5 to 0
The rule of isometry states that two triangles are equal if they have ____ equal angles and share a common side.
When the bisecting technique is used, the central ray is directed at 90 degrees to the:
Which of the following techniques use the same principles of horizontal angulation?
1, 2, 3
Horizontal angulation refers to the placement of the position-indicating device (PID) in a(n) ____ plane. Vertical angulation refers to the positioning of the PID in a(n) ____ plane.
The primary disadvantage of the bisecting technique when contrasted with the paralleling technique is:
Foreshortened images refer to images of the teeth that appear ____. Foreshortening of images results from ____ vertical angulation.
With the bisecting technique, the recommended vertical angulation range for maxillary canines is ____ degrees.
+45 to +55
Which size film is traditionally used with the bisecting technique?
#2 film for anterior teeth and for posterior teeth
When the bisecting technique is used, which of the following angles is bisected?
The angle formed by the film and the long axis of the tooth
With the finger-holding method, which of the following would be used to hold the maxillary right molar film?
Which of the following commercially available film holders can be used with the bisecting technique?
Both a and c
When the ____ is/are used, the patient may use excessive force to stabilize the film, causing the film to bend and resulting in image distortion.
For the maxillary premolar exposure, the front edge of the film should be aligned with the midline of the maxillary:
Film should be placed approximately ____ inch beyond the incisal or occlusal surfaces when using the bisecting technique
Elongated images refer to images of the teeth that appear ____. Elongation of images results from ____ vertical angulation.
Too long; insufficient
According to the text, when exposing a complete mouth radiographic series (CMRS) using the bisecting technique, there are ____ recommended size 2 periapical film placements.
The recommended anterior periapical exposure sequence for the bisecting technique starts with the:
Maxillary right canine
When the bisecting technique is used, the film must be placed along the ____ surface of the tooth.
For the mandibular molar exposure, the front edge of the film should be aligned with the midline of the:
According to the authors, in the bisecting technique, film-holding instruments or the patient's finger may be used to position and stabilize the film. With the bisecting technique, using film holders is recommended because it eliminates use of the patient's finger to stabilize the film.
Both statements are true.
According to the recommended posterior periapical exposure sequence for the bisecting technique, the second posterior quadrant exposed should be the:
Mandibular right quadrant.
When the bisecting technique is used, foreshortening will occur if the central ray is directed perpendicular to the:
Plane of the film.
Which of the following commercially available film holders is/are recommended for one-time use only?
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