Name the technique  in which  the part of the root is preserved for implant placement

a. Socket shield technique

b. Root hemisection

c. Ridge preservation

d. Bone regeneration

Ans: Socket shield technique

Socket Shield Technique

After extraction of a tooth, loss of supporting bone and apical migration of soft tissues causes unesthetic black triangles after implant placement.

This socket shield technique helps prevent bone loss. This method is also known as partial extraction therapy, root membrane technique, and partial root retention. It aims at preserving the buccal two-third of the root in socket so that the periodontium, along with the bundle bone and the buccal bone remains, intact. The buccal bone has bilateral blood supply from the gingiva above and the periodontium below.

The root section preserves the periodontal attachment apparatus that includes periodontal ligament (PDL), attachment fibers, vascularization, root cementum, bundle bone, and alveolar bone. The root fragment remains vital and undamaged and prevents the expected postextraction socket remodeling and also supports the buccal/facial tissue