Measuring Intra-Oral Scanner Accuracy and How Accurate is the Medit Scanner?

it’s a good thing, because the world just changed. it is irresponsible to extrapolate research done outside the mouth on stone models or impressions into clinical significance with intra-oral scanning. There are parameters that are impossible to quantify like focal distance throughout the scan (unlike desktop scanners with known focal distances), the codes use to do the algorithms, the scan patterns, and also how light is treated by enamel, dentin, and restored materials.

i can’t believe people still use terms like trueness and accuracy when they really don’t even exist when you scan intra-orally. Like analog impressions, it is impossible to judge digital impression accuracy LIVE while it is happening.

Enter Medit! There are a few distinct ways to demonstrate an accurate scan live while it is happening. One way is to import a geometric shape that doesn’t alter its form while models are being rendered. That’s what’s demonstrated here. To my knowledge no one has ever studied this approach because no other camera lets you do this. i did see some publications where the authors attached objects like radiographic markers and after it was processed, they could measure that object and see if it distorted or not, but nothing at this level.