In fact blood drawing fails. When the tooth is extracted, it is sensitive to remove granulation tissue. Socket preservation is done with Vanilla graft at #18 (Fig.8); there is ~3.5 mm bone between the bottom of the single socket and the Inferior Alveolar Canal (red dashed line).
Xin Wei, DDS, PhD, MS 1st edition 11/17/2018, last revision 03/16/2019