insertion depth insertion angle insertion timing
1)Mx.5 &6 7-8mm 1)oblique angle(30~45度) after safety distance has been created
(上顎5-6間) to long axis of adjacent teeth
2)perpendicular angle to the
long axis of adjacent teeth
2)palate 3-4mm opposite to the upper molar any time
3)IZ crest 6-7mm oblique angle (15~30度) to any time
long axis of adjacent teeth
4)Md. buccal shelf 5-6mm oblique angle (10~20度) to any time
long axis of adjacent teeth