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Abstract
Twelve block sections of mandibles containing incisors, canines, premolars, and molars
were dissected from human cadavers (total, 26 teeth). Endodontic access was achieved,
and a No. 10 k-type endodontic file was inserted to a point approximately 1 to 2 mm
short of the radiographic apex.
By securing the mandible and Rinn instrument with plaster mounts, exposures were made
from identical angles and film and jaw placement remained constant in both techniques.
Conventional film images were recorded on Kodak Ultraspeed film with six to eight
impulses. Xeroradiographic images were recorded with four to five impulses. Radiographs
and xeroradiographs were evaluated with the use of light from a masked view☐. A magnifying
glass was used to evaluate visualization of the following entities: the root apex;
the periodontal ligament; the trabecular pattern; and the measuring instruments. The
images were examined and categorized by three examiners, who used the following scores:
3, optimal for diagnostic information; 2, adequate for diagnostic information; 1,
poor but providing diagnostic information; and 0, unacceptably poor.
In all categories examined, the information provided by xeroradiographs was significantly
greater than that provided by conventional radiographs (p < .05). In terms of diagnostic value and lower patient dose, xeroradiographs are
preferred to conventional radiographs.
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References
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Article info
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Copyright
© 1987 The C. V. Mosby Company. Published by Elsevier Inc.
