1,000+
Cycle bone testing
Bovine rib, pig rib, and bovine tibia at 22°C. No visible wear observed across internal testing.
In-house bench testCrown Down
You record every implant.What about the osteotomy drill?
Every implant chart records the implant that goes in. Almost none record the drill that shaped the site. So what happens by the 50th osteotomy on the same drill?
One Idea · Three Lenses
Which question can your practice answer today?
The same blind spot, viewed from three angles. Pick the lens that matches how your practice actually thinks.
Your implant drill has no odometer.
Do you have a current tracking method for your drill use?
Some practices log per-drill hole counts in the chart or on the cassette label. Most rely on the sterile-processing team to eyeball wear. Either is a legitimate answer. Not having one is also an answer.
Do you know what the manufacturer suggests for drill retirement?
Retirement rules differ by manufacturer and by drill type. Some publish a use count. Some publish an autoclave count. Some publish nothing. What does the drill kit you use today say, and where is it documented?
Do you know what “one use” means, per patient or per site drilled?
A single implant case can be one hole or four. If the manufacturer counts by patient, four adjacent osteotomies count as one use. If they count by site, the same case counts as four. Same drill, very different retirement math.
All three lenses
- Do you have a current tracking method for your drill use? Some practices log per-drill hole counts in the chart or on the cassette label. Most rely on the sterile-processing team to eyeball wear. Either is a legitimate answer. Not having one is also an answer.
- Do you know what the manufacturer suggests for drill retirement? Retirement rules differ by manufacturer and by drill type. Some publish a use count. Some publish an autoclave count. Some publish nothing. What does the drill kit you use today say, and where is it documented?
- Do you know what “one use” means, per patient or per site drilled? A single implant case can be one hole or four. If the manufacturer counts by patient, four adjacent osteotomies count as one use. If they count by site, the same case counts as four. Same drill, very different retirement math.
- One number from a peer-reviewed drilling study. Sorgato et al. (PLOS ONE, 2025) measured a ~20% higher temperature rise at the 50th osteotomy compared to the 1st on the same reused drill. In vitro on synthetic bone, so not a clinical outcome. Same drill, same protocol, more heat.
- The material story runs longer than one paper. Tungsten carbide is roughly 13× harder than surgical stainless steel by Vickers hardness. Industrial cutting tools swapped away from steel a generation ago on that basis. Dental oral-surgery burs followed the same path; osteotomy drills have been slower to catch up.
- An unknown drill history does not prove harm. What the current evidence establishes is that a used drill and a new drill are not the same instrument. What it does not establish is a patient-level outcome. An unknown drill history identifies a workflow variable most practices cannot confidently reconstruct, not a proven clinical harm.
- Replacement intervals, sequences, and staff tracking time. The cost of a reusable drill isn't the sticker price. It's the replacement interval, the number of sequence positions in the tray, and the sterile-processing time spent tracking which drill goes where.
- Transparent math, using your practice's inputs. For a practice placing 20 implants a month, a conservative retirement rule turns into 4-6 drill replacements a year per position. The line item is easy to miss because it isn't billed on a single invoice.
- How much of your annual supply spend is drill replacement? The drill life check gives you a transparent annual replacement-cost estimate for your implant system, so the recurring line item becomes visible next to the one-time alternatives worth comparing.
The Kit
We built the drill without the blind spot.
Eight solid tungsten carbide drills. A 2-drill protocol that runs guided or freehand. No replacement cycle to plan around, no drill-life math to reconstruct after the fact.
- 01
No replacement cycle
Cutting performance guaranteed for the life of the kit. No blind spot to worry about.
- 02
Solid tungsten carbide
Eight drills, ~13× harder than surgical steel.
- 03
Universal compatibility
Fits every major implant system: Nobel Biocare, Straumann, Zimmer Biomet, Neodent, BioHorizons, Dentsply Sirona, MegaGen, Osstem, and more.
- 04
15 or 20 mm lengths
Same 2-drill protocol, matched to your osteotomy depth.
- 05
Guided or freehand
3D depth stoppers lock into sleeved guides for planned cases. The same 2-drill sequence runs freehand when you don't have a guide. One kit, either workflow.
Or shop by SKU
- Crown Down 15 mm kit$3,495
- Crown Down 20 mm kit$3,495
- Individual drills$395 each
- 3D drill stoppers$95 each
Testing & Research
Bench testing, peer-reviewed research, and documented cases.
Three different classes of evidence, kept separate: in-house bench testing of Crown Down drills, independent peer-reviewed research on drill wear and heat, and documented clinical cases.
4
Peer-reviewed studies
Koo 2015, Mendes 2014, Harris & Kohles 2001, Yalcin 2025 on drill material, osteotomy heat, and repeated clinical use.
Independent research5yr
Documented case follow-up
One documented Neodent GM case placed with the Crown Down protocol in a medically-compromised patient. Single-case observation, not systematic cohort follow-up.
Published case historyThe Drill Life Check
Can you tell me how many uses your osteotomy drill has left?
Most practices can’t answer that without checking. Four workflow questions. No patient information.
7 clinician reviews and counting
“Two years in and I haven't replaced a single drill.”
“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 DiederichLuxembourg
“My assistants noticed the difference on day one.”
“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 FromovichIsrael
“18 months of daily use and the drills still cut like new.”
“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 TejadaDominican Republic
“That line item is simply gone now.”
“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 BertrandMontreal, Canada
“My team adapted to the protocol within a week.”
“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 MirmoojiPierrefonds, Canada
“The thermal difference is something I can feel through the handpiece.”
“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
“Same torque, different bone, different biology.”
“This is one of the principles behind the Crown-Down technique: by selectively reducing cortical interference, insertion torque may better reflect the true mechanical contribution of the medullary bone while reducing excessive crestal compression. Same torque, different bone, different biology.”
Dr. Alberto Miselli, DDSVenezuela
Live Clinical Case
Watch it cut dense D1 bone.
Two implant sites at lower right #45 and #47, prepared live with two tungsten carbide drills. No ascending sequence, no drill swaps between diameters.
- Case
- #45-47
- Bone type
- D1 cortical
- Sites
- Two premolar
- Region
- Dom. Republic
Case by Dr. Ernesto Antonio Pichardo Tejada, DDS · 18+ months of daily Crown Down use
- 01·0:00
Cortical entry
Matched-diameter drill clears the dense crestal cortex in seconds.
- 02·0:45
Drill to depth
Trabecular drill completes the site, no ascending sequence.
- 03·1:20
Dense D1 site
The hardest bone type most clinicians will ever prepare.
- 04·1:55
Both sites done
Two adjacent osteotomies prepared with the same 2-drill sequence.
Buy With Confidence
Try it on your first cases. Full refund if it doesn’t outperform your current drills.
60-day clinical trial
Use the kit on your first cases. If Crown Down doesn't outperform your current drills, full refund - we pay return shipping.
Wear-performance for life
After the trial, drills are guaranteed against loss of cutting performance under normal clinical use.
FDA cleared
Class II surgical instrument. Regulatory documentation ships with every order.
Ships worldwide
$100 flat-rate shipping to every country we deliver to. Stripe checkout, tax at cart.
About Crown Down
Built to make an implant osteotomy simpler.
Crown Down was designed by an implant surgeon to solve his own tray - fewer drills, no saline dependency, and cutting geometry that holds its edge across every osteotomy he places.
Meet the Founder
Dr. Zvi Fudim, DDS
Founder & CEO · 30+ years, 6+ patents
Dental surgeon and inventor with three decades in implant dentistry. Crown Down is a system he built chair-side to solve a problem he kept running into himself - too many drills per site, too much saline, and steel edges that dulled long before the practice was ready to replace them.
Read the full bio30+
Years of implant surgery, patents, and chair-side iteration behind every drill.
1,000+
Cycle bone-block tests across bovine rib, pig rib, and bovine tibia at 22°C.
All majors
Universal compatibility across every major implant system, guided or freehand.
The Team
Dr. Zvi FudimFounder & CEO
John Ter-MesropianCo-Founder
Ron FudimCTO
The Drill Life Check
Take the check. Only if it’s useful.
Four workflow inputs. Guidance located for your implant system, a transparent replacement-cost estimate, and one tracking gap worth discussing with your team. Sent back as a written summary, not a demo pitch.
Anonymous · No follow-up unless you ask
Contact
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