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Orthogonal panoramic X-ray shows that the implant at #3 and the root of #4 are critically close (Fig.4). If PA were taken with parallel pins after initial osteotomy, correction would be easy. The patient is doing fine postop without pain or nasal hemorrhage.
Xin Wei, DDS, PhD, MS 1st edition 04/24/2018, last revision 01/03/2020