6 mm Implant for Lower Molar

After removal of the residual roots at #30 (Fig.1), a thin septum (Fig.2 *) is removed with Rongeur (Fig.3).  Following use of 4.8 mm Magic Drill, a 5x9 mm dummy implant is placed (Fig.4).  To reduce socket gap (*), a 6 mm IBS implant is inserted with >50 Ncm (Fig.5).  What is unexpected is heavy reduction in the height of a 6.5x4(3) mm abutment (A) because of the short crown height of the lower posterior teeth (Fig.1) and supraeruption of the tooth #3.  The immediate provisional is unstable postop.  The remade one dislodges soon, so does the abutment (Fig.6, 3 months postop).  It appears that bone pattern in the distal socket changes.

Return to Lower Molar Immediate Implant, Prevent Molar Periimplantitis (Protocols, Table)

Xin Wei, DDS, PhD, MS 1st edition 06/20/2017, last revision 09/22/2017