Preparation Objectives For Cement Fills

1. Thorough Cleansing and Shaping

2. Apex as small as Possible

3. Enlarge to size 30 within 1mm of apex

4. Maintain Patency

5. Avoiding Ledges

6. Avoiding Perforations

7. Elimination of The Smeared Layer

8. Avoiding Blocking Canals

9. Avoid Zipping

10. Avoid Stripping

11. Avoiding Broken Instruments

12. Avoid Creating "Aneurism"

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