The field of view of or scan area is probably the most important factor to keep in mind with ios. i don’t know of a single study that discusses this. Admittedly i don’t read any studies on digital dentistry because they are riddled with errors and nonsense 
here i demonstrate how a small field of view set deliberately affects our results and introduces errors. what happens when you scan an edentulous area, the buccal and lingual vestibule are out of focal distance which dramatically reduces the scan area.
here i demonstrate how a small field of view set deliberately affects our results and introduces errors. what happens when you scan an edentulous area, the buccal and lingual vestibule are out of focal distance which dramatically reduces the scan area.This is precisely why ios can veer off track and introduce errors in your models. to drive the point home, if you scan the intaglio of a physical impression, the same vestibular areas provide solid landmarks and data that help keep the scanner on track
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