Customer have reported that their uploaded images are pixilated and grainy. In addition, the tooth image on the device goes black while targeting.
ShadeVision user experiences an LCD image that becomes increasingly darker with subsequent measurements to the point that the targeted tooth is very tough to see on the display.
Uploaded images that appear pixilated and grainy.
Fogging of the optics glass is most likely the cause for the aforementioned symptoms. While this is a rare occurrence for ShadeVision users, it can happen. An example of uploaded images in progressively fogged condition is shown below:
In image #1, there is virtually no pixilation in the black area of the image. As you progress from image #1 thru image #5, not only does the black area of the image become increasingly pixilated or grainy, but the entire image becomes distorted as well. Fogging will always alter an image in this fashion and will also cause the resulting color data to be inaccurate.
How to avoid this phenomenon:
Have the patient seated upright as opposed to lying down.
Make sure that the patient's mouth is fully open while targeting. If the patient closes down around the tip while being targeted, any exhaled breath will go directly up the instrument's tip and gather on the optics glass.
After targeting is completed for one tooth, pull the instrument away from the patient's mouth to select the next tooth. Place the instrument against the patient's tooth only during the targeting process.
In very rare cases, a patient might appear to be a heavy mouth breather. This might require the user to ask the patient to either breathe thru their nose or hold their breath during targeting.
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