A 67-year-old man (bruxer) had endo failure at #31.  Coronal CT section of the distal root shows that a 7x14 mm gingiva-level implant can be placed (Fig.2 (C: Inferior Alveolar Canal)).

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Xin Wei, DDS, PhD, MS 1st edition 09/07/2015, last revision 07/16/2019