Effect of head positioning in panoramic radiography on vertical measurements: an in vitro study

Dento Maxillo Facial Radiology
Q XieA Ainamo

Abstract

To assess whether it is possible to make accurate vertical measurements of the jaws from panoramic radiographs. Five dry skulls were shifted 5 mm forwards and backwards and tilted 5 degrees up and down in the sagittal plane. Panoramic radiographs of each skull were obtained in nine different positions. In the maxilla, three reference lines were used and vertical measurements were made at the distal surfaces of the first premolar and first molar and in the midline. In the mandible, measurements were made at the distal surfaces of the first premolar and first molar, and at the mental foramen on both sides, and in the midline. The points and lines were marked manually and the radiographs were digitized, magnified and measured. Sagittal shifting and tilting had only a slight effect on measurements in the mandible. Sagittal tilting of the head had the greatest effect on all the measurements made from the line between the articular eminences to the alveolar crest, as well as measurements in the maxillary midline. The line between the articular eminences is unsuitable as a reference line for measurements of the tooth-bearing areas. A slight misalignment of the head does not significantly affect the vertical measurements in the mandibl...Continue Reading

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Citations

Feb 21, 2014·Indian Journal of Dental Research : Official Publication of Indian Society for Dental Research·Emre BodrumluCihad Dundar
Dec 9, 2004·Dento Maxillo Facial Radiology·V DutraC Susin
Oct 18, 2005·Dento Maxillo Facial Radiology·W S LasterH Garland Hershey
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