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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

Publication:
August 1999
Volume 30 , Issue 8

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New radiographic programs for transverse conventional tomograms in the dentomaxillofacial region

Gabriele Kaeppler, DDS, Dr med dent

Pages: 541-549
PMID: 10635267

Using only 7 programs, Orthophos Plus permits transverse conventional tomograms of all maxillomandibular regions. The precision of the magnification factors of these programs is very high. Factors influencing the image quality of the 7 programs were assessed. Image quality depends on technical precision and on correct patient positioning, ie, jaw axis alignment to the direction of projection. This procedure with 7 programs is more demanding than the procedure for x-ray units that use many programs for the different projections. Especially for implantology, it is important that the patientís jaw be positioned in accordance with the projection to avoid oblique cuts and incorrect information about the jaw dimensions. The correct region is best selected by positioning a cast in the positioning aids prior to exposure and using the same setting for the patientís exposures. For correct implant planning, it is helpful to digitize the tomograms with Friacom so that, despite different magnification factors of the programs, the correct implant dimensions are determined. If these suggestions are followed, use of these programs in dental practice can be recommended.

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