Bitewings
What is a bitewing
This type of radiograph is primarily used to detect interproximal caries.
What is a PA?
This radiograph shows the entire tooth from crown to apex.
Teeth appear stretched or longer than normal due to this error.
What is elongation?
This radiograph shows the entire maxilla and mandible in one image
Panoramic
When taking a FMX how many x-rays do you take?
18-20
What is the effect of incorrect horizontal angulation?
Overlapping
This part of the tooth must be visible on a properly taken PA?
root/apex
Teeth appear short and stubby due to this error.
Fore-shortening
This radiograph is commonly used to evaluate sinuses and facial bones.
Cephalometric
When mounting the patients right side appears on what side?
On the viewers left
If the patient does not bite fully on the xcp, the contacts may appear like this?
Teeth will not be in occlusion
This error appears as a white zone on the edge of a radiograph.
cone cut
What can happen if a patient leaves glasses, earrings on during an X-ray?
Ghost image
What happens when you position your patient to far forward when taking a pano?
Teeth appear narrow and blurred.
Mounting maxillary Pa's where should the root be?
Superior
A 4-year-old patient has tight contacts and small arches. The best receptor size to use is this.
0 or 1, use a smaller digital sensor.
PA's are commonly used to evaluate this type of infection at the root tip.
Abscess
If an image is to dark its usually cause by this?
Over exposure, to much kvp
If a patient's chin is too low during a pano this error will appear?
Exaggerated smile line.
What anatomical landmark will help you distinguish maxillary molars vs mandibular molars?
Your maxillary sinuses.
If a child is not accorporating during bitewing images what is the next best resort.
Take a panoramic x-ray
When using the paralleling technique, the PID must be positioned this way in relation to the receptor and the tooth?
parallel to the axis
If roots appear curved unnaturally, what type of error is most likely present?
shape distortion, receptor bent.
If a patient is scared of radiation when you are taking X-rays what can you tell them.
1. Radiation is very low.
2. The ADA does not require lead aprons anymore.
3. You receive more radiation eating a banana and being out in the sun.
When mounting a FMX how do you know you did it correclty?
The smile line should be up.