The lingual plate is thick and dense (Fig.2 L). To prevent drill and implant deviation buccally, a 5x11.5 mm implant will be placed as lingual as possible. A 5 mm cortical drill will be used before 2.2-4.5 mm ones being used for depth. The 4.0 mm drill will reach the final depth (apical underprep). A 17 mm long tissue-level implant will be placed. 17-5.5=11.5 mm (thread portion); 1.2 mm drill tip for the rough surface.
Lingual Overprep Last Next Guide
Xin Wei, DDS, PhD, MS 1st edition 12/21/2019, last revision 04/14/2020