Optimization Analysis of Two-Factor Continuous Variable between Thread Depth and Pitch of Microimplant under Toque Force

Figure 2

The effects of the continuous changes of and on the Max EQV in cortical bone can be seen in the response surface cloud chart and sensitivity analysis pie chart. (a) With the increase in within the range (: 0.4 mm-1.0 mm), the Max EQV in cortical bone declined by 38.61%; it decreased initially followed by a small increase, but the level in which it was decreased tends to be larger than the increasing range. As increased within the range ( 0.1 mm-0.4 mm), no variation in the values of the Max EQV. (b) The sensitivity analysis of Max EQV in cortical bone. Pitch was sensitive to the Max EQV compared to the depth.

(a)

(b)