Most buyers ask which mill is best. The useful question is which mill fits the work you are already taking in.
A lab doing mostly single units has a different answer than one moving into full-arch. Buying for the work you hope to win in two years is how equipment ends up underused. Before comparing machines, establish your monthly unit count, your current outsourced cost per unit, and your remake rate.
Wet, dry, or both
| Configuration | Best suited to | The trade-off |
|---|---|---|
| Dry only | Zirconia, PMMA, wax. High-volume single-material labs. | No glass ceramics, no metal. Dust extraction becomes mandatory infrastructure, not an accessory. |
| Wet only | Glass ceramics, lithium disilicate, titanium abutments. | Slower on zirconia, and the coolant system is a maintenance item you now own. |
| Wet and dry | Mixed case mix, labs that cannot predict the next 12 months. | Higher price and both maintenance burdens. Justified only if you genuinely run both. |
If more than 80 percent of your work is one material family, a dedicated machine will outperform a combination unit at the same price. Combination units earn their premium in genuinely mixed labs.
Spindles are wear items
This is the largest post-purchase cost in the category and almost nobody asks about it before signing. Spindles have a rated service life and a replacement price. Ask for both. A vendor who has actually supported the machine answers immediately; one who sells boxes will tell you it does not fail.
A worn bur does not break. It still cuts, and the mill still finishes the job. Fit drifts a few microns per unit until it is caught at seating — and by then it is twenty units, not one. Replace on a tool-life counter, not when the fit tells you to.
The full guide, including the blank three-year cost-of-ownership table you can take to any vendor.
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The complete series — all 6 guides
- 1. Capital equipment — The three numbers before any purchase
- 2. Milling units — Wet, dry or both (you are here)
- 3. 3D printers — Why print speed is the wrong number
- 4. Intraoral scanners — Open STL or their portal
- 5. Sintering furnaces — The program, not the furnace
- 6. Choosing a distributor — Ten questions for any distributor
← Part 1: Capital equipmentPart 3: 3D printers →
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