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19Endo TribuneJuly 19-25, 2010United Kingdom Edition Fig 6: CBCT lower molar Fig 7: shows a suspected horizontal frac- ture of the bicuspid (arrow) Fig 8: CBCT shows that only the palatal root is fractured (arrow) Fig 9: PA EIRR mesial of first molar (arrow) Fig 11: CBCT EIRR (arrows) location and extent of root frac- tures. Bernardes et al concluded that: CBCT provides enhanced and accurate information for the diagnosis of root fractures, thereby constituting an excellent alternative for diagnosis in the dental practice. (3) Hassan et al (4) found CBCT better than periapi- cal radiographs in detecting ver- tical root fractures. Although one can’t predictably demonstrate incomplete root fractures on CBCT, I have seen some rather dramatic cases. Fig 3 shows a periapical im- age of an upper cuspid with a lateral bony lesion mid root. Lateral periodontal cyst, lateral canal, non-healing endo, and fractured root were included in my differential diagnosis. CBCT (Fig 4) clearly shows a fractured root was the cause of the lesion. Even if you can’t see the frac- ture on CBCT, you can often see the amount and location of bone loss caused by them. Fig 5 shows a PA that is inconclusive. Fig 6 shows bone loss on the second molar consistent with vertical root fracture. (arrow) Internal or external resorption Fortunately, resorption is much rarer that fractures; it can be no less frustrating to demon- strate the location and extent of the defect on conventional two Fig 10: CBCT EIRR (arrows) Comes with free High End PC and Monitor offer valid until 31 August 2010 page 20DTà