Abstract
Objective: The objective of this study was to determine the degree to which trabecular bone
contributes to the radiographic visibility of lamina dura. Study Design: Segments of human cadaver mandible were obtained and split longitudinally. Two identical
radiographs were made of each segment (1) before the removal of any additional bone
and after (2) the removal of a small amount of the lamina dura at the apex of a tooth,
(3) block removal of trabecular bone, and (4) smoothing of the endosteal surface of
the external cortex. The radiographs were projected in random pairs for each sample.
Six dentists judged whether a difference in the amount of lamina dura could be detected
between 2 sets of radiographs. Results: Chi-square analysis revealed a significant radiographic difference between radiographs
made initially and after removal of the lamina dura and trabecular bone. Conclusions: Fewer than half of the changes of lamina dura loss alone could be detected radiographically
by the observing dentists, whereas nearly all cases of the loss of periapical lamina
dura in conjunction with loss of trabecular bone could be detected. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;93:118-22)
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Article info
Publication history
Accepted:
August 19,
2001
Received in revised form:
July 18,
2001
Received:
June 5,
2001
Footnotes
*Supported by grants from CNPq (National Council for Research and Development), Brazil, and the Dows Institute of Dental Research, College of Dentistry, and the Department of Anatomy and Cell Biology, College of Medicine, The University of Iowa.
**Reprint requests: Marcelo G. P. Cavalcanti, DDS, MS, PhD, University of São Paulo, Faculty of Odontology, Department of Radiology, Av. Prof. Lineu Prestes, 2227, 05508-900, São Paulo, SP, Brazil,[email protected]
Identification
Copyright
© 2002 Mosby, Inc. Published by Elsevier Inc. All rights reserved.
