
The full Crown Down 2-drill protocol in a 20 mm-length tungsten carbide kit, designed for longer osteotomies and deeper guided cases.
The Crown Down 20 mm implant drilling kit replaces a long steel drill sequence with two solid tungsten carbide drills per implant site, in 20 mm working lengths for longer osteotomies. Eight drill diameters from Ø 2.75 mm (#20) to Ø 6.0 mm (#60) cover deep guided cases and freehand surgery, with universal compatibility across major implant systems.
Cases that require more than 15 mm of working depth, including longer implants and demanding bone anatomy.
Fully guided implant placements where the surgical guide adds height above the osteotomy and longer drills are needed to reach planned depth.
Direct tactile feedback through bone with two carbide drills per site instead of a long steel sequence.
Works across major implant systems so you do not need a separate drill kit per implant brand.
Drill length guide
The 20 mm kit exists for cases where 15 mm of working depth does not reach the planned apex. There are three clinical scenarios where the extra length matters, and recognizing them before the procedure starts is what makes the kit choice predictable.
1. Fully guided surgery with a sleeve stack
A typical surgical guide adds 5 to 7 mm above the crestal bone once you account for the guide thickness and the drill shoulder. A 15 mm working length minus a 6 mm guide stack leaves only 9 mm of in-bone reach, which is short of most standard implant lengths. The 20 mm kit restores the full in-bone reach for guided cases regardless of guide thickness.
2. Long implants and full-arch reconstructions
Implants 13 mm and longer (common in posterior mandibular sites, All-on-X protocols, and tilted-implant rehabilitation) require enough drill length to safely reach the planned apex with clearance for the shoulder and stopper. The 20 mm kit is the default for any practice that places long implants regularly.
3. Thick keratinized tissue and deep alveolar anatomy
In sites with thick keratinized gingiva or a deep buccal shelf, the soft-tissue offset alone can consume 3 to 4 mm of drill length before the cortical pass even begins. The 20 mm length keeps the cutting flutes engaged through the full osteotomy rather than the shoulder running against the shank.
If your practice is split between standard and long osteotomies, the 20 mm kit covers both. The drill diameters and the 2-drill protocol are identical to the 15 mm kit, so there is no retraining and no procedural change. Only the apical reach differs.
Both kits run the same Crown Down 2-drill protocol with the same solid tungsten carbide drills. The only difference is drill working length.
| Specification | Crown Down 20 mm KitThis kit | Crown Down 15 mm Kit |
|---|---|---|
| SKU | CD-KIT-L020 | CD-KIT-L015 |
| Drill working length | 20 mm | 15 mm |
| Drill diameters | Ø 2.75 to 6.0 mm (#20 to #60) | Ø 2.75 to 6.0 mm (#20 to #60) |
| Drill count | 8 drills | 8 drills |
| Material | Solid tungsten carbide | Solid tungsten carbide |
| Protocol | 2-drill | 2-drill |
| Best for | Long osteotomies and deeper guided cases | Standard implant osteotomies |
| Guided surgery | Yes (extra clearance for guides) | Yes (with guide sleeves) |
| Lock mechanism | Morse taper 1.5° | Morse taper 1.5° |
| Price | $3,495 USD | $3,495 USD |
Tax calculated at checkout. Free shipping to the United States and European Union.
“I switched to Crown Down two years ago and haven't replaced a single drill. My implant site prep is noticeably faster and I have much better tactile feedback through the bone.”

Dr. Henri Diederich
Luxembourg
“The 2-drill protocol cut my osteotomy time significantly. My assistants noticed the difference on day one: fewer instruments to manage, faster turnover between patients.”

Dr. Ophir Framovich
Israel
“I was skeptical at first, but after 18 months of daily use the drills still cut like new. The heat reduction is real, and my patients report less post-op discomfort.”

Dr. Ernesto Antonio Pichardo Tejada
Dominican Republic
“What sold me was the economics. I used to budget for replacing dull drills every quarter, and that line item is simply gone now. The carbide holds its edge case after case, and the consistency that gives me during osteotomy prep is worth as much as the savings.”

Dr. Philippe Bertrand
Montreal, Canada
“Going from a full sequential tray down to two drills changed how my surgical days run. There is less to set up, less to track, and my guided cases flow faster without sacrificing accuracy. My team adapted to the protocol within a week.”

Dr. Ramin Mirmooji
Pierrefonds, Canada
“The thermal difference is something I can feel through the handpiece, and I see it in how cleanly the sites heal. Preserving bone vitality matters to me, and being able to collect autogenous chips on the same pass has made grafting in my practice far more straightforward.”

Dr. Gadi Kalihman
Kiryat Gat, Israel
Book a clinical demo to walk through pricing, the 2-drill protocol, and how this fits your workflow.
Keep reading
Explore related pages on the Crown Down dental implant drilling kit, protocol, and clinical science.
15 mm Kit
8 solid tungsten carbide drills in 15 mm length for standard implant osteotomies.
Read moreCompatibility
Drilling charts and user manuals for Nobel, Straumann, Zimmer, Astra Tech, Neodent, Camlog, and 20+ more.
Read moreClinical Evidence
1,000-cycle bone testing, peer-reviewed studies, and a 5-year clinical follow-up.
Read more