Project Description
Osteotomy depths are designed to be up to 1.5 mm longer than the corresponding implant insertion depth. We call this difference the “v-factor”. Not only does it vary by manufacturer, but it can also vary within any one manufacturer’s drill kits – tapered or straight, guided or non-guided, hub or no hub – all drill kits are built differently. Below is a table of V-factors taken from various manufacturer surgical manuals.
When drilling freehand, one must be aware that the depth marks correspond to implant insertion depth, even though in many cases the osteotomy depth will be deeper. When using a surgical guide, it is important to note that the virtual implant placed in the planning software may be short of the full osteotomy depth. And the manufacturer of the drill guide must account for the additional depth of the drill. If this is not accounted for, the drill will go only to the implant insertion depth, stopping short of the desired osteotomy depth.
Table 1: V-factors (drilling depth minus implant insertion depth)
Make/Model | V-Factor Length (mm) |
NobelReplace | 1.50 |
Keystone Straight | 1.35 |
Keystone Tapered | 1.27 |
3i ACT | 0.60 – 1.30 |
3i ITD/DTN/DT | 0.40 – 1.00 |
Zimmer | 1.00 |
Osstem Taper and Straight | 1.00 |
AlphaBio TEC | 0.00 – 1.00 |
MIS SEVEN | 0.20 – 0.95 |
MIS BiOCOM | 0.20 – 0.60 |
Hiossen HM | 0.60 |
Straumann | 0.40 |
BioHorizons Tapered Internal | 0.00 |
Implantium | 0.00 |
DENTSPLY XiVE | 0.00 |
DENTSPLY Ankylos | 0.00 |
Exhibit A
Figure 1 – NobelReplace
Figure 2 – Keystone Straight
Figure 3 – Keystone Tapered
Figure 4 – 3i (all)
Figure 5 – 3i (all)
Figure 6 – Zimmer drills (Driva shown below)
Figure 7 – Osstem Tapered
Figure 8 – Osstem Straight
Figure 9 – AlphaBio TEC
Figure 10 – MIS SEVEN
Figure 11 – MIS BiOCOM
Figure 12 – Hiossen HM
Figure 13 – Straumann
Figure 14 – BioHorizons Tapered Internal
Figure 15 – Implantium
Figure 16 – Dentsply XiVE
Figure 17 – Dentsply ANKYLOS
Project Details
- Date November 26, 2013
- Tags Resources
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