Chairside CAD/CAM Dentistry: Benefits and Drawbacks

The Core Benefits of Chairside CAD/CAM

Time Savings: Same-Day Restorations in One Visit

The most practical advantage of chairside CAD/CAM is straightforward: the patient comes in once and leaves with a final restoration. No temporary crown to cement and later remove, no second appointment to schedule, no risk of the provisional failing in between.

In practice, a single-visit crown typically runs 1.5 to 2 hours end-to-end. The doctor's active time — preparation, scanning, and final cementation — accounts for roughly 45 to 60 minutes. The remaining time is machine processing: CAD design, milling, and sintering or glazing, during which the patient waits in the reception area. It's a longer single appointment than a traditional prep visit, but it eliminates the return trip entirely.

Patient feedback tends to center on two things: no temporary crown to manage between visits, and only one injection. For patients who find the second appointment — and the second block of anesthesia — the most disruptive part of the process, same-day delivery is a meaningful improvement in experience, not just a scheduling convenience.

For high-volume practices, the efficiency compounds further. A single visit can accommodate multiple single-tooth restorations, and once assistants are trained to handle scanning, the doctor's time is freed up for other procedures running in parallel.

Improved Accuracy with Digital Impressions

Switching to digital impressions removes one of the more consistently problematic steps in traditional restorative workflow. Physical impressions are subject to distortion and shrinkage — errors that only show up at the seating appointment. Digital scans eliminate that variable.

If there's a gap or void in the scan, the affected area can be rescanned without starting over. That alone reduces the rate of remakes and the chair time that comes with them.

There are operational benefits beyond accuracy. Digital impressions can be archived indefinitely without physical storage space. There are no impression trays to stock, no materials to order, no shipping costs to the lab for impression transfer. For practices with a focus on reducing consumable overhead, this adds up.

Patient comfort is also a genuine improvement. The gag reflex response to traditional impression material is a real barrier for a meaningful portion of patients — particularly those with cognitive impairment or heightened sensitivity. Intraoral scanners have also become substantially smaller and faster over the past decade, reducing the time patients spend with their mouths open.

Supports a Wide Range of Restorative Procedures

Chairside CAD/CAM is not limited to single crowns. Depending on the system and scanner, it supports crowns, bridges, veneers, inlays, onlays, and implant surgical guides. Some scanners — iTero being the most commonly cited example — also support in-house fabrication of night guards and clear aligners.

It's worth noting that digital impressions don't require in-house milling to be useful. Scans can be sent directly to an external lab in STL format, which means a practice can adopt digital impressions as a first step and add milling capability later, once the workflow is established and the volume justifies the equipment.

Better Quality Control with Real-Time Margin Verification

One underappreciated clinical benefit is the ability to assess margin quality before the restoration is milled. The intraoral camera magnifies the prepared tooth, making it easier to identify issues with preparation form or margin at the design stage — not at the seating appointment.

Milling precision matters here in a concrete way. A 5-axis unit handles undercuts more accurately than a 4-axis unit because the additional rotational axes allow the bur to approach the workpiece from more angles — which directly affects how well the milled restoration fits complex geometries like deep margins or angled abutments. The difference shows up in adjustment time at seating and in long-term restoration fit.

The Real Drawbacks — What to Know Before You Invest

High Upfront Cost of CAD/CAM Equipment

Solo practices can make the investment work, but the math is more straightforward in group settings where case volume is higher and the equipment runs more hours per week. A useful way to frame the decision: estimate your current monthly lab fee spend on single-unit restorations, then calculate how long it would take in-house milling to offset the equipment cost. For most practices doing consistent crown volume, the equipment pays for itself — the question is the timeline and whether the cash flow during that period is manageable.

Requires Hands-On Training for Doctors and Staff

Adopting chairside CAD/CAM changes the workflow for almost everyone in the practice, not just the doctor. Assistants need to learn scanning technique and scan quality control. Front desk needs to adjust scheduling to account for longer single appointments. The doctor needs to become comfortable with CAD software and, eventually, with in-office staining and shade customization.

Most clinicians find that staining anterior restorations in-house takes time to get right. The common approach is to continue sending anterior cases to the lab during the initial period and bring them in-house once confidence with shade matching is established. This is a practical workaround, not a failure of the technology — but it's worth factoring into expectations for how quickly the full system pays off.

Software has improved significantly. Newer CAD platforms automate more of the design steps, reducing the number of decisions the clinician needs to make manually. But there's still a period of adjustment, and practices that underestimate it tend to get frustrated earlier than those that plan for it.

For a detailed breakdown of the software evaluation process, see our CAD/CAM Software Analysis and Selection Guide.

Not All Restorations Are Suitable for Chairside Milling

Chairside CAD/CAM handles single-unit posterior restorations well. It's less straightforwardly suited to everything else.

This doesn't mean chairside CAD/CAM is limited. It means the technology has a zone where it performs best, and understanding that zone before investing helps avoid the frustration of expecting it to replace every lab function it can't yet replace.

Is Chairside CAD/CAM Right for Your Practice?

The benefits are real. So are the costs and the adjustment period. The question isn't whether chairside CAD/CAM is good technology — it is — but whether it's the right investment for your practice at this point in time. Four factors tend to determine that.

Chairside vs. Lab Workflow — A Direct Comparison

For practices still weighing the two approaches, this is where the core tradeoffs sit:

Neither approach is categorically better. Many practices run both — using chairside CAD/CAM for routine crown and inlay work while continuing to send complex or aesthetic cases to the lab. That hybrid model captures most of the efficiency benefit without overextending the in-house system into cases it handles less well.

Chairside CAD/CAM delivers real clinical and operational value — but the decision to invest is not primarily about the technology. It's about whether your practice volume, team, and case mix create the conditions where that value actually compounds.

For practices that meet those conditions, the shift to in-house milling tends to pay off — in efficiency, in patient experience, and over time, in cost per restoration. For practices that don't yet meet them, starting with digital impressions alone is a lower-risk way to build toward it.

If you're evaluating milling equipment as part of that decision, Globaldentex's dental milling machine lineup covers chairside and lab configurations across 4-axis and 5-axis options, with full specification comparisons available. For a broader look at digital dentistry equipment solutions, the equipment solutions page is a useful starting point.