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Why do we take x-rays?
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What is a periapical (PA)
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DAMB RHS EXAM

QuestionAnswer
Why do we take x-rays? To determine the dental health status of a patient beyond the oral exam (clinical exam).
What is a periapical (PA) The tissues surrounding the apex of the root of a tooth 2-3mm
Who benefits from dental x-rays? Patient, Practice, Insurance
What is the primary benefit of an xray? To detect disease. Decay and Periodontal disease
What can be found in an xray Developing teeth, missing teeth, supernumary teeth (extra), impacted teeth, caries, recurrent caries, periodontal disease, dilacerated roots (abnormal curves), retained root tips, periapical lesions/infections
Define radiopaque The light or white areas of the film. The more dense the tissue or material, the whiter it will appear
Radiolucent Dark areas that x-rays pass through easily
Difference between interpretation and diagnosis Interpretation- ability to read and explain what is revealed by a radiograph. Diagnosis- Giving a disease or condition to the image that is seen
Define Density The overall darkness of the x-ray picture
Define contrast Level of differentation between the black/white/gray areas of the film. Higher contrast is very black and white, lower contrast has more shades of gray
What are the three factors for an x-ray Time, kilovoltage, and miliamperage
Within the x-ray tube, electrons are generated by the tungsten filament in the cathode
The "Guidelines for Prescribing Dental Radiographs" states that Dentulous adult recall patients who are not at increased risk for caries should have posterior bite-wing examinations at 24-36 month intervals
You are going to take dental images on your patient/ He is larger than average. What machine setting adjustment should you make prior to taking dental images Increase impulses
Stochastic biologic effects from radiation occur as a result of exposure, but severity is not determines by dose
When the film exits the film processor, you notic that is appears foggy and tacks detail. What could be a possible solution to prevent this from occuring with the next patient's film Eliminate light leaks
The stepwedge technique for evaluating developer strength relies on exposing one exposed stepwedge film each day
To test the automatic film processor, {BLANK} in the automatic processor. Unwrap two unexposed films, expose one to light and then process both films
What is true about the development step in film processing Developing is the first step in processing film
The overall apperance of your film is too dark. Which of the following is the cause of this error Film was in the developer too long
To create a reference radiograph, what needs to be fresh FIlm, developer, fixer
In order to perform the safelighting test, you would use {BLANK} a coin
When a stepwedge technique is used to evaluate developer strength, and the density on the daily radiograph differs from that on the standard radiograph by more than one {blank} steps, the developer solution is depleted Two
Generally, there are {blank} elements to informed consent Four
Your former patient has moved and would like his records including the original radiographs sent to his new dentist. What would you do? Keep the original films, and send the news dentist a duplicate set
The bite-wing image is used in the interproximal examination
Your patient has no clinical sign of disease, how frequently should you take a CMS on your patient You CANNOT take a CMS
your new adult patient has no clinical sign of disease and no restorations. What type of images should you take Bite-Wings
Mounted radiographs increase accessibility for interpretation
In the labial mounting method, radiographs are placed with the {blank} side of the identification dot facing the viewer. They are then viewed from the {blank} aspect Raised Labial
According to your text , when viewing radiographs in sequential order, the third step in viewing radiographs should begin with the mandibular left side
Which of the following areas would appear the most radiopaque on a dental image Enamel
If the operating kilovoltage is increased, the receptor density {blank} because the average energy of the x-rays is raised increases
A stepwedge will reveal that images taken at a lowes kV will have {BLANK} than images taken at a higher kV a higher contrast
the geometric characteristic of {BLANK} referes to an image that appears larger than the actual size of the object it represents Magnification
What are the influencing factors would degrade sharpess Larger silver halide crystal size AND Larger focal spot
What is a true statemtnt reguarding the use of lead aprons and throid collars The apron should cover from the neck to just above the patient's knees
A dental assistant experiencences an occupational exposure. A patient's blood has splased into the employee's eye. What is an appropriate step to take? Document the incident, including the source individual, the employee, route of exposure, and how it happened
What is flase regarding handwashing Alcohol-based hand gel can be used in place of soap and water on hands that are visibly dirty
A new patient has recently moved to the area and arrives for her first appointment in the detal practice. She is 6 months pregnant. She is complaining of a tootache. She does not bring dental records with her. What would be the most appropriate? Only x-ray the area she is complaining about using the lead apron and thyroid collar for protection
How does the use of photostimulable storage phosphor (PSP) plates affect digital radiography PSP plates do not offer immeditate access to the digital image
What would NOT be a reason for the dental x-ray image to come out black? Processing time is too short
What will happen to an x-ray film that is left in the processing solution too long The image with be either partially or completely missing
During manual processing, how long should the film remain in the developer solution if the temperature of the solution is 65F 6 minutes
What can be disposed of in the regular trash or down the drain Developer
What do NOT include anatomical landmarks of the mandible Incisive foramen, mental foramen, genial tubercle
When identifying anatomical structures and dental materials on radiograph, what is TRUE The dentin is not as radiopaque as enamel
For manual duplication of x-ray films, what conditions is incorrect Film duplication can be done in the regular office setting without any special conditions
What is the function of the collimator It forms the shape and size of the x-ray beam upon leaving the tubehead
What best describes the effects of long-term low-dose radiation exposure The effect of long-term low-dose radiation exposure can cause changes at the cellular level in the human body that would b be observed for many years
A young patient is having difficulty holding still for x-rays. What is the most appropriate step for the dental assistant to take? Ask the parent to have the child sit on his or her lap with both covered by the lead apron
Created by: bobbijean2020
 

 



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