CBCT Is Mainstream Now. Here's What That Costs You.

A 72-month note on a mid-range CBCT runs about $1,300 a month before you've taken a single scan, and at the four to six scans a month a typical general practice actually produces, that machine loses money every month for six consecutive years. One general dentist walked through exactly that arithmetic in the Academy of General Dentistry's purchasing guide: $1,300 a month financed, offset by billing $250 a scan on four to six scans, with dental insurance covering the scan in only "one or two cases" he had ever seen. The scan fee does not pay for the box. It never did. A CBCT doesn't earn money, it stops money from walking out your door on a referral slip, and if you can't name the cases that are walking, you shouldn't buy one.

Our view: if your CBCT pro forma has a line item called "scan revenue," you're justifying the wrong purchase, and we'd drop the plan. The only version of this that pencils for a general practice is a referral-retention purchase, justified by the implant, molar endo, and third-molar cases you're currently diagnosing and sending away. That's a claim plenty of owners will argue with, and the rep selling you the unit will argue hardest.

Five Scans a Month Loses $717 a Month

Start with the honest carrying cost, because almost nobody models it fully. New small-to-midsize units run $50,000 to $100,000, per both the AGD and Renew Digital. Take the AGD's real-world note: $1,300 a month for 72 months, which is $93,600 in total payments.

Now add service. Annual maintenance contracts on the unit run $3,000 to $20,000 a year, according to The Pricer. Call it $8,000 for a mid-range unit with a reasonable contract, which is $667 a month.

So your fixed monthly cost to own the thing is $1,967 before overhead allocation, before the square footage it occupies, and before the training time.

Against that, five scans a month at $250 is $1,250 in revenue.

Which leaves you down $717 every month.

That's $8,604 a year of pure drag, repeated six times, or $51,624 over the term of the note.

And that $250 is optimistic in the other direction too. Practices typically charge patients $200 to $300 out of pocket per scan, per The Pricer, and "out of pocket" is the operative phrase. The AGD guide is blunt that insurance coverage for CBCT is close to nonexistent in general practice. Every scan is a cash conversation with a patient who did not come in expecting one. Your collection rate on scan fees is not 100%, your front desk will waive some of them to save a case, and in a PPO-heavy practice some of them get bundled into the surgical fee because fighting about a $250 add-on is a bad trade.

What Most Owners Get Wrong: Modeling the Scan, Not the Case

The specific mistake: the owner who builds the justification on scan volume. It's usually a solo GP or a two-doc group, five to twelve years out of school, being walked through a spreadsheet by a rep who has structured it so the scan fee covers the payment. Six scans at $250 is $1,500, the payment is $1,300, and the spreadsheet shows $200 a month of profit. That number is fiction. It ignores the service contract entirely, assumes full collection on a cash fee, and assumes volume that only materializes if your case mix already justified the machine.

The second mistake belongs to a different owner: the one who's already decided to buy, and buys the biggest field of view available because the incremental cost at the point of sale looks small. A large-FOV unit you use for single-site implant planning is $30,000 of capability you'll never bill for, and it comes with a bigger service contract, more training burden, and more interpretation risk on anatomy you weren't looking for and aren't qualified to read.

Both mistakes have the same root. They treat CBCT as a product you sell instead of a capability that changes which cases stay in your building.

Six Retained Implant Cases a Year Pays for the Whole Thing

Here's the model that actually works, with our assumptions stated plainly so you can swap in your own.

Assume a single implant case you currently refer out, where retaining the surgical and restorative phases in-house produces $4,000 of collected revenue. Your fixed carrying cost is the $1,967 a month from above, or $23,604 a year.

Break-even is 5.9 retained cases a year.

That's one case every other month. If you're currently referring out two implant cases a month and you keep them, you're producing $8,000 a month, or $96,000 a year, against $23,604 of carrying cost.

Net contribution of $72,396 a year, before the clinical time and lab cost to deliver it.

Notice what changed. The machine went from losing $8,604 a year to contributing $72,396, and not one input in the scan-fee model moved. The only thing that changed is what you're counting. If you cannot look at your referral log and point to six cases a year that stayed out of your practice specifically because you couldn't image them, the purchase doesn't clear. If you can point to twenty-four, stop reading and go get financing.

The hard part is that this test is falsifiable and the scan-fee test isn't. Pull twelve months of referral letters. Count the implant consults, the molar endos you sent out, the impacted thirds. Then ask, case by case, whether a scan in your own building would have kept it. Most owners who do this honestly find a number between four and ten, which is right at the line, which is exactly why the decision feels hard.

19.8% Is the Number That Should Move You

There's a clinical argument that's stronger than either financial model, and it rarely shows up in the sales conversation. In a four-year retrospective review of 1,409 CBCT referrals, published in a peer-reviewed analysis of use patterns, the diagnosis changed after CBCT imaging in 19.8% of cases overall, rising to 66.7% in orthodontic cases.

Read that as an operator, not a clinician. One in five times someone thought a scan was worth ordering, the scan changed the answer. That's a case-acceptance argument, a treatment-planning argument, and a documentation argument all at once. The patient who sees their own anatomy on screen signs differently than the patient looking at a PA. The redo you avoid is worth more than the scan fee by an order of magnitude.

The same study is also a warning. Oral and Maxillofacial Surgery generated 75.5% of all referrals in that dataset. The heaviest, most productive use of this technology concentrates in surgical planning, not in general diagnostics. If your practice is restorative and hygiene-driven with occasional surgery, you are not the high-use profile in that data, and you should not expect the use numbers that justify a new machine.

The Certified Pre-Owned Case at $29,995

If you've cleared the referral-retention test, the next decision is where most of the money actually is. Certified pre-owned units start at $29,995, which Renew Digital puts at 30% to 50% off new list, per their 2025 cost breakdown.

At $29,995 over 60 months, principal alone is about $500 a month, call it $610 with financing.

Add the same $667 service allocation and your carrying cost is $1,277 a month instead of $1,967.

That's $690 a month saved, or $8,280 a year.

Your break-even drops from 5.9 retained cases a year to 3.8.

We'd take the pre-owned unit in almost every general practice scenario. The reasons owners give for buying new mostly don't survive contact with the numbers:

• "Resale value." You're buying a depreciating imaging asset on a six-year note. You will not sell it into a strong market.
• "Latest software." Check whether the software license transfers and whether the version you need is a separate purchase. That's a contract question, not a new-versus-used question.
• "Warranty." Compare the actual service terms side by side, including sensor and tube coverage, because the $3,000-to-$20,000 spread on maintenance contracts is where the real variance lives.
• "The rep said financing is better on new." Sometimes true, and still usually not enough to close a $20,000 to $70,000 price gap.

The one place we'd pay for new: if your workflow depends on integration with a specific guided surgery or CAD system and the pre-owned unit's export format breaks that chain. Verify that before you shop price, because retrofitting it later costs more than the discount saved.

Why the 72-Month Note Is the Real Risk

The term worries us more than the price. Six years is a long time to be locked into an imaging platform, and it's longer than the gap between meaningful generational changes in sensors and reconstruction software. You can be three years into a $1,300 payment on a unit that's two generations behind, with a service contract renewing at the top of its range because parts are getting scarce.

Shorter terms on cheaper units are the defensive play. A $29,995 pre-owned unit on 48 months leaves you free in four years with a machine that still works and no residual obligation. A $93,600 commitment on 72 months leaves you with a sunk asset and a decision you've already made for yourself.

What Would Change Our Mind

Two things. First, meaningful insurance recognition of CBCT as a billable diagnostic in general practice. Right now the AGD guide's "one or two cases" is the honest picture, and the whole argument collapses into cash-fee economics. If a majority of plans started reimbursing scans at even $150, the scan-revenue model stops being fiction and the new-unit purchase gets defensible again.

Second, service contract pricing. That $3,000 to $20,000 annual range is doing enormous work in every calculation above, and it's the input owners investigate least. We're watching whether pre-owned service pricing converges toward new-unit pricing as these fleets age. If it does, the certified pre-owned discount gets eaten from the back end and our recommendation flips.

Three Things to Do This Week

Pull twelve months of referral letters and count the implant, molar endo, and third-molar cases you sent out, then mark the ones a scan in your own building would have kept. If that number is under four, close the file and revisit it in a year. If it's over eight, get written service contract quotes on two certified pre-owned units and one new unit before you look at a single financing term, because the maintenance line is where the decision actually gets made. And whatever the rep says, don't sign a 72-month note on a machine you haven't modeled at your real scan volume rather than theirs.

A $1,967 monthly carrying cost is a permanent change to your fixed overhead, and most owners add equipment payments without ever recalculating what their overhead percentage becomes afterward. Before you sign, run your own numbers through our free overhead calculator with the CBCT payment and service contract loaded in, and see what the new break-even looks like on the practice as a whole, not just on the machine.