Question 210 · LDEK · Fixed appliances
The use of pilot drill before placing the microimplant is recommended when the cortical layer is thicker than:
- A. 1 mm.
- B. 1.5 mm.
- C. 2 mm.
- D. 3 mm.
- E. using a pilot drill in placing microimplants is not recommended.
Hint
Self-drilling insertion is the default; pre-drilling is kept for unusually thick, dense cortex such as that of the posterior mandible.
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