Great summaries. Thanks. I do have a question tho. 12:55 when I take pano, there's no problem, but the anterior area often comes out being cutted off on CBCT although I didn't change the patient's position. what should I do?
You could but only if there is a perfect distortion scaled along all axis. Which is usually not the case. Btw, the mismatch of measurements from this video (CBCT vs dental cast model) are due to improper geometric calibration of the device. Manufacturers recommend calibrations periodically (some days, some weeks...), or when the machine has suffered a physical bump, an electromagnetic current above normals or high temperature fluctuations among other insults.
Great video! Thank you for uploading, I've learned a lot within these 15 minutes.
Great summaries. Thanks. I do have a question tho. 12:55 when I take pano, there's no problem, but the anterior area often comes out being cutted off on CBCT although I didn't change the patient's position. what should I do?
If it is something with FOV size, recommend you to search some information like 'CBCT FOV sizes'
Thanks! Very helpful
How can we prevent the bouncing of light reflected from too much metal in the patients mouth?
you can check this video
ruclips.net/video/xklYQTfyXzs/видео.html
Instead of taking another CT, you can correct the dicom with the actual measurements?
You could but only if there is a perfect distortion scaled along all axis. Which is usually not the case.
Btw, the mismatch of measurements from this video (CBCT vs dental cast model) are due to improper geometric calibration of the device. Manufacturers recommend calibrations periodically (some days, some weeks...), or when the machine has suffered a physical bump, an electromagnetic current above normals or high temperature fluctuations among other insults.