Densah Bur, What Can Go Wrong
The patient is 61 years old presented 3 m post extraction of # 14. Significant maxillary sinus pneumatization with sinus floor at 5 mm from crest. Tx plan was to perform Densah lift and immediately place a 6/11.5 mm implant.
Maxillary sinus membrane crestal perforation was caused by the pilot drill at 5mm depth.
1- I used Densah Burs with vertical stop at 4 mm depth, which was 1 mm below the perforation level.
2- New sub-floor was established below the perforation utilizing Densah Burs in OD mode to compact autogenous bone and gradually seal the perforation.
3- The new working depth stayed at 4 mm at all times
3- Additional allograft was propelled into the sinus to facilitate additional membrane lift.
4- 6/11.5 mm implant was placed.