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Publication Detail
A locking dental registration stent for use in image guided surgery of the anterior and lateral skull base
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Richards A, Edwards P, King A, Hill D, Gaston R, Maurer C, Fenlon M, Jusczyzck B, Pearce A, Hawkes DH, Gleeson MJ
  • Publication date:
    01/12/1999
  • Pagination:
    32, ?
  • Journal:
    Skull Base Surgery
  • Volume:
    9
  • Issue:
    SUPPL. 2
  • Status:
    Published
  • Print ISSN:
    1052-1453
Abstract
Objectives: To eliminate the need for bone-implanted fiducials and use of a Mayfield clamp to achieve accurate patient registration and tracking during image-guided surgery. Methods: A 3-piece, lockable acrylic dental splint was fitted to the patients maxillary dentition. The splint consisted of a base plate with attached pre-fabricated fork and frame carrying trackable, fiducial markers and locating devices. Results: The dental stent proved to be rigid, extremely retentive and stable in use. It was comfortable to wear. The position of the locating devices, visible in MR and CT, could be adjusted in order to maximally describe the volume of surgical interest. Relocation errors of = 1 mm were recorded in a group of 4 volunteers. The stent did not interfere with the delivery of anaesthesia. In clinical trials during surgery using bone implanted pins as a gold standard, location accuracy of s l ,5 mm was achieved. Conclusions: The stent offers a cost-effective and less traumatic alternative to bone implanted fiducial markers for image-guided surgery in the dentate patient. It facilitates a method of tracking which avoids the use of a Mayfield clamp and allows head movement.
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