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This study reports on a retrospective survey of 1001 panoramic radiographs in a dental
school population of persons with impacted third molars. The objective was to determine
the association between pathologic conditions visible on radiographs and third molar
teeth. In the series 2872 impacted third molars were examined. The most common problem
seen on radiographs was dental caries, followed by supernumerary teeth, decreased
alveolar bone height, and coronal radiolucencies. Other than caries, occurrence rates
were low. Statistically significant differences in occurrences rates were seen within
and between jaws for various pathologic conditions. The low rates did not offer support
for the likely presence of pathologic conditions to be an indication for third molar
removal.
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© 1995 Mosby-Year Book, Inc. Published by Elsevier Inc.
