CBVT Scan: How much trust do you put in it?

cbvt-scanI’d like to start a discussion on CBVT scans. How much can you trust your CBCT scan? Have you found that the surgical guides are accurate? Have you entered the surgical field and found that things are not as they appeared in the CBVT scan?

6 thoughts on “CBVT Scan: How much trust do you put in it?

  1. Dennis Flanagan DS MSc says:

    I have occasionally found the dimension measurements don’t correspond with the actual anatomical dimensions. At first I thought it was the alignment rotation of the area but that wasn’t the reason. Just CBCT error.
    Dennis Flanagan DDS MSc

  2. himakshu says:

    Great point of discussion
    These days it is the most accurate method of getting measurements…
    Also, medico-legally, it is what will protect you in a law suit even if things don’t quite work out as planned.
    The fact one has a CBVT shows one has gone to great lengths to exercise a fair amount of care, attention and planning prior to any invasive techniques
    Hope this is of use
    Himakshu Vyas

    • Sajjad A.Khan D.D.S,B.D.S says:

      Any diagnostic method should be considered in medical point of view and clinician’s need base. Minimizing radiation is a very important factor to be considered . After 20 years of surgical placing and restoring implants, When I look back, I had few failures, for which I blame my case selection as the main reason. Creating unreasonable guidelines of standard of care and making CBVT a part of it is harmful to the profession and public health. It is not the lawyer , it is us digging our grave.

  3. steve says:

    Without question, CBCT surgical guides are seldom 100% accurate, but in select cases, 90% accurate is better than no guide at all. In most cases the guide makes life easier and does facilitate correct implant size and more accurate implant placement.

  4. Agim Hymer says:

    Brought up in the day of only an OPG and finger/scaler pinching of a ridge to see the width. The CBCT isn’t perfect but a much nicer way to approach an implant. Implants in the those days are the only think in dentistry where the word “abort” was used. I couldn’t believe it when I first started. So the patient was told that that we may have to abort the procedure in the middle of the operation if not enough bone. I think the word isn’t used anymore now we have CBCT.

  5. David Levitt says:

    It depends on which scanner you are using. The original Serona with its old plate technology was very inaccurate to the point of being useless. ICAT is excellent but does distort the cortical plates slightly. NewTom is also excellent but not 100%. Perti et. al. showed a mean width distortion of .3mm with a range of -1.5mm to 0.8mm. Both these numbers are clinically significant as they could lead to the placement of an implant that is too small or too large in diameter respectively. Surgical guides are certainly an aid in placement but should not be relied on completely.

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