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It appears that 2.5 mm 1-piece implants (Fig.3) fit the atrophic ridge at the site of #8 better than 3.0 mm one (Fig.2). The palatal plate (Fig.2 P) is usually denser and thicker than the buccal one. The osteotomy for the implant is initiated palatally; the implant is placed below the buccal crest (Fig.2 >). The exposed lingual thread will be covered by bone graft (Fig.3 pink circles) and collagen dressing.
Since the implant is placed deep as well as the thick gingiva, 4 mm cuff will be most likely chosen.
Xin Wei, DDS, PhD, MS 1st edition 01/21/2017, last revision 01/19/2018