Everything you need to know before buying a second-hand cone beam tomography unit
CBCT (Cone Beam Computed Tomography) is a three-dimensional imaging system designed specifically for dental and maxillofacial diagnostics. Unlike traditional medical CT, a CBCT unit rotates around the patient emitting a cone-shaped X-ray beam, capturing the entire volume of interest in a single rotation.
In dentistry, CBCT is now considered the standard for implantology, guided surgery, complex endodontics, orthodontics and diagnosis of bone pathologies. The ability to visualize structures in 3D with radiation doses significantly lower than conventional CT has made it the reference point in modern dental radiology.
CBCT systems are mainly distinguished by field of view (FOV), i.e. the acquisition volume:
| Type | FOV | Main use | Indicative used price |
|---|---|---|---|
| Small FOV | 4×4 cm – 8×8 cm | Endodontics, single tooth/quadrant | €8,000 – €18,000 |
| Medium FOV | 10×10 cm – 13×13 cm | Implantology, guided surgery | €15,000 – €35,000 |
| Large FOV | 15×15 cm – 24×19 cm | Orthodontics, maxillofacial | €25,000 – €55,000 |
The most common manufacturers on the European used market are Planmeca, Carestream, Morita, Vatech, NewTom and Sirona (now Dentsply). All of them guarantee spare parts and technical support even for 5–8 year old models.
The voxel is the volumetric unit of the 3D image. Endodontics requires voxels of 0.07–0.1 mm; implantology needs only 0.15–0.2 mm; orthodontics can accept even 0.3–0.4 mm. Buying a system with higher resolution than necessary increases the cost with no clinical benefit.
Always check the certified DAP (Dose Area Product) value. Modern systems with low-dose protocols are preferable, especially for pediatric patients. Ask the seller for the most recent calibration report.
Every CBCT comes with 3D visualization software. Check that the licenses are transferable and that the software is still supported by the manufacturer. Software such as Planmeca Romexis, CS 3D, OnDemand3D has annual update costs to factor into your budget.
The used CBCT market has grown steadily since 2020, driven by rising new-equipment costs and the availability of quality units decommissioned by leading practices. Prices vary based on brand, FOV, year of manufacture and maintenance condition.
As a general reference: a mid-range CBCT (10×10 cm, major manufacturer, 5–7 years old) in good condition is typically purchased between €18,000 and €30,000, compared to an equivalent new unit that often exceeds €60,000.
The CBCT is the starting point of the digital workflow in implantology: the DICOM data acquired integrates with digital impressions from intraoral scanners (IOS) and with surgical planning software to generate surgical guides that are 3D printed or milled with CAD/CAM systems. Buying a CBCT compatible with these workflows is a strategic choice today.
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