Because accurate post fit is important to maximize both retention and support, the screw post should be used with the matched post/reamer syste;and accurate contrangle drilling should be maintained.

• 3.；由于根柱和根柱孔的精密吻合，对于固位及力量传递的支持有重要的影响，因此打桩时要精确做到根柱孔的乡钻制，对于偏斜的弯机要避免使用，而且要选用同号组合配对的钻针。