FREE AND STUDY GAMES ABOUT BISECTING-THE-ANGLE.

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FREE AND STUDY GAMES ABOUT BISECTING-THE-ANGLE.

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -60 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: BW Technique. Uphill/downhill is caused by

Answer:

dropped receptor corner

Question 2: Disadvantages of Bisecting-the-Angle Technique

Answer:

The image projected on the receptor has dimensional distortion; More bodily tissues are exposed as a result of greater vertical angulation (lens of the eye, thyroid)

Question 3: Definition of Bisecting-the-angle technique

Answer:

An intraoral radiographic technique that provides a complete image of the tooth or teeth and 3-4 mm of surrounding tissue;

Question 4: Correct Horizontal Angulation

Answer:

Central ray is directed through the contact areas of the teeth to open the contacts (Paralleling, bisecting, and bitewing techniques all follow this principle)

Question 5: Common Errors associated w/the BW technique. INCORRECT RECEPTOR

PLACEMENT

Answer:

*Mesial surfaces of 1st premolars are missed; *Distal surfaces of most posterior molars are missed; *"uphill/downhill" caused by receptor rotation;

Question 6: BW Technique. Overlapping is caused by...

Answer:

incorrect horizontal angulation

Question 7: The central ray in bisecting-the-angle technique is directed...

Answer:

perpendicular to the imaginary bisector Question 8: Bisecting-the-Angle Technique: Patient Positioning

Answer:

Occlusal plane parallel with the floor for both maxillary and mandibular films

Question 9: Bitewing Radiographs, definition

Answer:

Intraoral radiographic technique that produces an image of the maxillary and mandibular teeth in occlusion, and the crestal alveolar bone

Question 10: Receptor Positioning

Answer:

Film is positioned close to the tooth with the incisal or occlusal end of the film touching the tip of the tooth

Question 11: Receptor Positioning for premolar bitewing

Answer:

Include at least the distal surfaces of the cuspid (entire mandibular cuspid if possible)

Question 12: Bitewing; Cone (PID) Positioning

Answer:

Vertical Angulation, cone points slightly downward;

Question 13: How is horizontal angulation determined for premolar bitewing

Answer:

Determined by using a Q-tip positioned between guide teeth; Place Q-tip between mandibular premolars

Question 14: Interproximal, define

Answer:

between two adjacent surfaces Question 15: This describes what type of error: Entire receptor was not covered by PID; The border can appear fuzzy or have a distinct line;

Answer:

Cone Cutting, it is a Technique Error

Question 16: Bitewing Radiographs, purpose

Answer:

To detect interproximal caries and examine the interproximal crestal bone levels

Question 17: Film creasing (crease - ???????, ?????,) caused by

Answer:

Creased conventional film caused by cracked film emulsion

Question 18: Bisect, Definition

Answer:

To divide into two equal parts;

Question 19: Bitewing image, define

Answer:

Receptor used in the interproximal examination that has a "wing" or tab

Question 20: Cone (PID) Positioning, Premolar BW; Covering the Entire Receptor

Answer:

Premolar BW: Position the PID anteriorly enough to cover the maxillary and mandibular cuspids and lateral incisors; /commisure in the middle of the cone; *middle of the cone directed @ the level of the occlusal plane;

Question 21: Patient Positioning for Posterior Bitewing Technique

Answer:

Occlusal plane of the maxilla parallel w/the floor

Question 22: Dimensional Distortion with the Bisecting-the-Angle Technique

Answer:

Paralleling: dimensional accuracy; Bisecting-the-angle: *dimensional distortion; *foreshortening of objects farthest from the film Question 23: Common Errors associated w/the BW technique. CONE POSITIONING ERRORS

Answer:

*Overlapping (superimposition of tooth surfaces caused by incorrect horizontal angulation); *Negative vertical angulation

Question 24: Bitewing; Horizontal angulation (Cone (PID) positioning) must

Answer:

open the contact areas between the teeth; determined by using the q-tip positioned between the guide teeth; Question 25: A conventional film exposed to light appears black after processing is... (what type of error? cause)

Answer:

Exposure error. Cause: exposure to white light

Question 26: Error characterized as such is caused by: *Mesial surfaces of 1st premolars are missed; *Distal surfaces of most posterior molars are missed; *"uphill/downhill" caused by receptor rotation;

Answer:

BW Technique. Incorrect Receptor Placement Question 27: BW Technique. Negative Vertical Angulation, error characterized as:

Answer:

*Cone (PID) was pointed upward; *Occlusal surfaces of maxillary teeth can be viewed; *Apical areas of mandibular teeth may be seen