Scanning strategy with IOS

Discussion in 'Intra Oral Scanners' started by zDigitalDentist, Jun 23, 2015.

  1. Hi all :)
    I have posted a new blog post referring to "Scanning Stratey" with IOS....I am very curious about your comments :) Might be of interest for you as we are doing a lot of research concerning this subject....

    You will find the blog post here:

    http://zdigitaldentistry.com/en/about-scanning-strategy/

    Best regards
    MZ
     
    cadfan likes this.
  2. 2thm8kr

    2thm8kr ɹotɐɹʇsıuıɯqA Staff Member

    With the various scanner types we have used, we have found that they all have a unique scanning strategy specific to what you are trying to achieve. Quadrant scans are easy and almost impossible to get inaccuracies if you are using one of the newest scanners since you are not going cross arch. Full arch scans require following the strategy or path stringently.

    Still frame cameras require some overlap between images in a certain sequence for the software to be able to stitch the images together properly. Some of the still image scanners have a set pattern and the software guides you through the steps.

    Video scanners need the occlusals of the posteriors and the majority of the lingual surface as well as some of the palatal areas of the anterior region in one pass to give the software enough topography to stitch the files accurately. After getting data capture of the occlusal and palatal surfaces, rolling to the buccal and lingual surfaces to fill in these areas has worked exceptionally well for us.
    As the developers improve the algorithms of the scanning software and computers are utilizing the RAM resources more efficiently we are finding that following the suggested strategy is not as critical in most cases with HD video scanners.

    I always look forward to your posts Dr. Z
     
    cadfan likes this.
  3. Appreciate your feedback 2thm8kr :)

    Well to be more in detail for you:
    CEREC Omnicam works in a speed of 6 cm/s - there is an overlap of 0.3 cm per image....so you can easily imagine that there might be problems if you turn the camera too fast...that is the worst problem with intraoral scanning..you absolutely have to avoid fast movement and turnings in areas where there is little surface information like in the front area...

    Regards
     
    2thm8kr likes this.

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