偏移预防：offset（金属袖远离牙槽嵴）；事先切开，必要时植骨，其实有意过度植骨。The implant may be deviated distopalatal due to the uneven crest with possible thread exposure.

牙槽嵴不平 导板  手术  Last     Next   导板

Xin Wei, DDS, PhD, MS 1st edition 10/09/2020, last revision 05/23/2021