Is the material cost for a bridge simply three times a crown?

Not exactly. A 3-unit bridge uses more material than a single crown, but the connectors between units don't require the same amount of disk as three separate crowns would. In practice material cost scales with the number of units, but not perfectly linearly: it should be measured against the disk actually used, not estimated with a fixed multiplier.

Is the bridge production time per abutment or for the whole bridge?

In the reference study (Mühlemann et al., 2019), time was measured for the entire 3-unit bridge, not divided per abutment. It shouldn't be divided by 3 to estimate single-unit time: aligning, connecting, and finishing the bridge takes additional time that doesn't exist when producing an isolated crown.

Does the crown remake rate (3.8%) also apply to bridges?

No equivalent study specific to multi-unit bridges exists. The 3.8% figure (McCracken et al., 2018) covers single-unit crowns only. For bridges, with more connection points and more surfaces that must fit simultaneously, remake risk is generally considered higher, but without a verified number to cite we don't state it as fact.

Is it worth milling a bridge in-house or outsourcing it to a milling center?

An outsourced 3-unit zirconia bridge costs around $102 total on average (industry data, 2026). The break-even calculation against in-house milling depends on monthly bridge volume: at low monthly volumes, outsourcing often remains cheaper than the equipment's depreciation cost.

How to calculate the production cost of a bridge in a dental lab

Multi-unit zirconia bridge on a dental lab workbench

A bridge isn't simply "three crowns joined together." It has connectors to design, a fit across multiple abutments at once, and a production time that isn't obtained by multiplying a single crown's time by three. Treating it that way on the price list is the most common way to underestimate its real cost.

What bridge production cost actually is

As with a single unit, production cost is the sum of materials, labor time, and any outsourcing. The difference is that each component carries more weight: more material for the connectors, more time to align across abutments, more risk that something won't fit on the first try.

Bridge cost = Material cost (multi-unit) + (production time × technician hourly rate) + outsourcing cost

How much material a 3-unit bridge costs

A 98mm zirconia disk costs roughly $120 and yields about 20 single crowns on average (source: David Sipperly, Dentsply Sirona, Dental Products Report, 2021), around $6 per crown. A 3-unit bridge doesn't simply consume 3 times that share: connectors add mass, but they share part of the disk more efficiently than 3 separate crowns would. The real material cost should be measured against the disk actually used for that specific bridge, not estimated with a fixed multiplier.

Move the sliders to see how cost and margin change as production time and list price vary.

Material cost (3-unit bridge, example)$16.00

Production time (minutes, whole bridge)240 min

List price$220

Labor cost

$100.00

Total cost

$116.00

Margin

47%

Example technician hourly rate: $25/h. Time is for the whole bridge, not per abutment.

Digital vs traditional lab: how much time matters on a bridge

A two-part peer-reviewed study from the University of Zurich (Mühlemann, Benic, Fehmer, Hämmerle, Sailer, Journal of Prosthetic Dentistry, 2019;121(2):252-257, Part II, specifically dedicated to lab time) measured technician time to produce a 3-unit tooth-supported zirconia bridge: 217-262 minutes with a digital CAD/CAM workflow, versus 370 minutes with the traditional lost-wax method. The absolute gap is wider than for a single crown: on bridges, the time saved by going digital counts even more.

This isn't an isolated finding: two more recent systematic reviews (Bessadet et al., Journal of Prosthetic Dentistry, 2025, on tooth- and implant-supported prostheses) confirm the same direction across a broader set of studies, even though they don't produce new direct time measurements. No study since 2019 repeats the original measurement with newer data: this remains the best available number.

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