Perform the Osteotomy
Takeaways
Osteotomy – Key Points
- Using a physio dispenser, drill with a contra-angle handpiece at a speed ranging between 800-1600 RPM at a high torque and constant saline cooling.
- The speed depends on the hardness in the drilling area.
- Initial drilling begins with a pilot drill for 2mm below the estimated bone height.
- After the initial drilling with the pilot drill, use the consequent B.Y. diamond milling bur.
- Check with the osteotome for a breach of the membrane – if a gap is detected it means there is no breach.
- Every 2 clockwise rotations of the stopper adds 1mm in length. For example – If B.Y. 5 is reached, set the osteotome to 6mm when checking for a breach.
- When there is no gap, and the sinus has been breached, it is time to elevate the membrane.
Scenario B Table
| B.Y. Used | Osteotome Length |
| B.Y.4 | 5mm |
| B.Y.5 | 6mm |
| B.Y.6 | 7mm |
| B.Y.7 | 8mm |
| B.Y.8 | 9mm |
| B.Y.9 | 10mm |
| B.Y.10 | 11mm |
Additional Information
Use of a pilot drill for initiating the osteotomy.
Gap example on a model
No gap = breach
