In fact 1 cc of cortical and cancellous bone mixture is used; after heavy debridement the bone graft is deposited on the distal root surface of the tooth #14 (Fig.4 arrow).  The bone increases not only coronally, but also apically (Fig.5 blue lines, as compared to red lines denoting the original bone height).

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Xin Wei, DDS, PhD, MS 1st edition 03/20/2019, last revision 02/27/2020