OSSEOTITE ® Tapered Depth Indicator (NTDI)
Introduction

The OSSEOTITE Tapered Depth Indicators are used to simulate the implant platform position prior to placing the implant.

A.  When using the NTDI, verify the osteotomy is clear of bone debris.

B.  Verify the NTDI platform position in reference to the crest of the bone. (This also verifies the depth of the osteotomy that has been created) The NTDI platform should be at the level you desire the implant platform to attain. If the NTDI platform is too high versus the desired position, then re-drilling to the appropriate depth is required. If the NTDI platform is too deep versus the desired position, this indicates some degree of osteotomy over preparation has taken place. To ensure proper engagement of the implant, it must be seated to the depth demonstrated by the NTDI. A longer implant can be considered. The clinician may consider verifying the position of the NTDI with a radiograph.

C.  When placing the implant, the implant platform should reach the same position that the NTDI platform previously attained. If the implant platform is positioned higher in relation to the crest of the bone than the platform of the NTDI previously demonstrated, then final hand ratcheting of the implant into the osteotomy is required. If the surgical motor stalls prior to full placement of the implant due to insufficient torque generation, the clinician should consider hand ratcheting for final positioning.

These guidelines will help ensure good bone-to-implant contact and primary stability of the implant.