A 2-piece implant (4.5x17 mm tissue-level) is placed at #10 after extraction, while 1-piece implants are placed at 11 (3x17 mm (tissue-level, 15 °) and 12 and 13 (bone-level, 2.5x14 and 2.5x12 mm; Fig.4,5).  In fact the 1 piece implant at #13 is not completely placed (Fig.5).  Arrowheads: sinus floor.所以10号牙处植入两段式植体（4.5x17 mm 牙龈水平），11-13分别植入一段式植体：3x17 mm (牙龈水平, 15 °，图四），2.5x14 and 2.5x12 mm（骨水平; 图四，五）。13号牙植体显得太长（当时诊所最短一段式植体（其实10毫米植体能买到，就是不敢买），图五（箭头：窦底））。

1-Piece Implants for Maxilla Last Next

Xin Wei, DDS, PhD, MS 1st edition 09/27/2015, last revision 02/09/2021