After 2.2 mm drill, a parallel pin is placed; it appears that the initial osteotomy is palatal (Fig.1).  徒手初步钻洞偏腭侧，需要纠正，费时费脑

Why Not Guide Ortho Upright Next  3个月后

Xin Wei, DDS, PhD, MS 1st edition 12/14/2018, last revision 01/05/2021