BIOMET 3i Depth Marking System
Parallel Walled Implants 

The BIOMET 3i Depth Marks measurement system provides a mark on the drill that corresponds to the placement of the implant via a well-established procedure. BIOMET 3i’s Original Protocol follows the principles of protecting the implant from premature loading by placing the implant subcrestally.

The length of the drill tip is not included in the depth mark measurement. The drill tip length should be considered when preparing the osteotomy.

The length of the drill tip varies with the diameter of the drill.

The drill depth marks do not indicate implant lengths. Rather, the marks represent the length of the implant with the cover screw in place. As a result, to place an implant and cover screw subcrestally requires drilling to the middle of the single line depth mark or the beginning or end of the broad band depth mark on ACT Drills. For crestal placement, drill halfway before the corresponding depth mark for the implant length. For supracrestal placement, the drill depth mark should remain above the bone by 1mm for the cover screw plus the implant collar height. Refer to the diagram on the bottom of page 10 for more information.

Drilling Depth

The drilling depth with the Twist Drill will vary depending on the type of placement related to the bone crest.

The depth marks are specific for subcrestal implant placement only. There are no specific depth marks on the drills for crestal or supracrestal placement.