Fig.3: Four months post implantation at the site of #3.  Although there is apparently bone loss at crest (>) and apex (*), the implant is stable.

The periodontal ligament space is increased for the tooth #4.

The tooth #5 has had root canal therapy and crown.  There is periapical radiolucency.

Fig.3': Extracted tooth #4 with crack line between the buccal (B) and lingual (L) portions (mesial view).

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Xin Wei, DDS, PhD, MS 1st edition 06/01/2013, last revision 10/31/2014