FREE DENTISTRY AND STUDY GAMES ABOUT INTRAORAL

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FREE DENTISTRY AND STUDY GAMES ABOUT INTRAORAL

XRAYS CH41 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -68 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: why would we need radiographs on an edentulous patient

Answer:

detect retained root tips,impacted teeth,and lesions (cysts , tumors) to identify objects embedded in the bone, and to observe the quantity and health of the bone

Question 2: what is very critical in the bitewing technique

Answer:

the angulation of the PID Question 3: with the bisecting technique the vertical angulation is determined by what

Answer:

the imaginary bisector, then central ray is directed perpendicular to the imaginary bisector

Question 4: what does edentulous mean

Answer:

without teeth

Question 5: intraoral technique of exposing periapical films

Answer:

bisecting ( bisection of the angle ) technique

Question 6: what is the major disadvantage of using the bisecting technique

Answer:

the image on the film is dimensionaly distorted

Question 7: intersecting at or forming a right angle

Answer:

perpendicular

Question 8: what happens to your radiograph if unexposed

Answer:

will be clear

Question 9: what is the occlusal technique used for

Answer:

to examine large areas of the upper or lower jaw Question 10: what is the basic rule for film position when using the paralleling technique

Answer:

the film must be positioned parallel to the long axis of the tooth. The film, in the film hlder, must be placed away from the teeth and toward the middle of the mouth Question 11: with the paralleling technique the vertical angulation of the central ray is

Answer:

directed perpendicular to the film and the long axis of the tooth Question 12: impairment of mental or physical functioning that usually occurs before adulthood and lasts indefinitely

Answer:

developmental disability

Question 13: when using the bisecting technique or the paralleling technique what angulation doesnt change

Answer:

horizontal angualtion Question 14: in extreme gag reflex patients what is another way of getting radiographs if you can not take them intraorally

Answer:

extraoral radiographs , panoramic or lateral jaw films Question 15: moving or lying in the same plane always separated by the same distance

Answer:

parallel Question 16: angel of 90 degrees formed by two lines perpendicular to each other

Answer:

right angle

Question 17: what does elongated mean

Answer:

the image appears longer on the xray than it is Question 18: what is the basic rule for vertical angulation when using the paralleling technique

Answer:

the central ray of the x-ray beam must be directed perpendicular ( at a right angle) to the film and the long axis of the tooth

Question 19: cutting across or through

Answer:

intersecting

Question 20: what is the labial method of mounting xrays

Answer:

films are placed in the mounth with the raised dots facing up, they are viewed as if the viewer is looking diretly at the patient

Question 21: what size of film do we use on adults when taking an occlusal radiograph

Answer:

4 Question 22: what happens to your radiograph if exposed to light before processing

Answer:

turns black Question 23: what technique is also known as the extension cone paralleling (XCP), right angle, or long -cone technique

Answer:

paralleling Question 24: what technique provides the most accurat image with the least amount of radiation exposure to the patient

Answer:

paralleling

Question 25: between two adjacent surfaces

Answer:

interproximal Question 26: when exposing periapical films with the paralleling technique where should you always start

Answer:

with the anterior teeth ( canines and incisors ) Question 27: how do you know if your XCP instrument ( RINN, ring and rod ect ) is correctly assembled

Answer:

when the film is seen centered in the middle of the aiming ring

Question 28: when using the bisecting technique where do you place the film

Answer:

place the film directly against the teeth to be radiographed