Fig.4 (preop PA): The upper central incisor (#9) and lateral (#10) have severe bone loss.
Fig.5 (intraop PA, taken 5 months after Fig.4 above): The periapical (periradical) radiolucency increases (#10).
A 2 mm pilot drill (P) is used to initiate osteotomy after the tooth #9 is extracted.
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Xin Wei, DDS, PhD, MS 1st edition 02/21/2013, last revision 01/19/2018