What Is CAD/CAM Technology in Dentistry?
Computer-Aided Design and Computer-Aided Manufacturing (CAD/CAM) technology has fundamentally transformed how dental restorations are designed and fabricated. Rather than relying entirely on manual sculpting and casting, dental laboratories now use sophisticated software and milling machines to produce highly accurate crowns, bridges, veneers, and more.
For dental technicians, understanding the CAD/CAM workflow is no longer optional — it is a core competency in any modern laboratory environment.
The Core Components of a CAD/CAM System
A complete CAD/CAM setup in a dental lab typically involves three main components working in sequence:
- Scanning: A desktop lab scanner or intraoral scanner captures the geometry of the tooth preparation or model, producing a precise 3D digital file.
- Design Software: Dedicated dental CAD software (such as exocad, 3Shape Dental Designer, or Cerec) allows the technician to design the restoration in a virtual environment, adjusting occlusion, contours, and margins.
- Milling / Manufacturing: The design file is sent to a milling machine or, in some cases, a 3D printer to produce the physical restoration from a material block or resin.
Open vs. Closed Systems
One of the most important distinctions in CAD/CAM dentistry is between open and closed systems:
- Closed systems (e.g., Cerec by Dentsply Sirona) keep scanning, design, and milling within one proprietary ecosystem. They offer seamless integration but limit flexibility in material and equipment choices.
- Open systems allow labs to mix and match scanners, software, and mills from different manufacturers. This offers greater flexibility and often better cost control.
Most large commercial dental labs favor open systems for their adaptability, while smaller or chairside setups may prefer the simplicity of a closed system.
Common Materials Milled with CAD/CAM
CAD/CAM systems are compatible with a wide range of dental materials, including:
- Zirconia (various translucency grades)
- Lithium disilicate glass-ceramic (e.g., IPS e.max CAD)
- PMMA (acrylic) for temporaries and full-arch prosthetics
- Composite resin blocks
- Wax blocks for cast frameworks
Benefits for the Dental Laboratory
- Precision and consistency: Digital workflows reduce human error and produce restorations with highly repeatable accuracy.
- Speed: Same-day or next-day turnaround becomes achievable for many restoration types.
- Digital case storage: Cases can be archived digitally, enabling remakes without rescanning.
- Reduced material waste: Milling from precise blocks minimizes excess material use.
Getting Started: What Labs Should Consider
If your lab is transitioning to CAD/CAM, start by evaluating your case volume, budget, and the types of restorations you produce most frequently. Entry-level scanners paired with open software platforms can be a cost-effective starting point before investing in a full milling solution.
Training is equally critical — most CAD software vendors offer formal certification courses, and hands-on practice is essential for technicians to become proficient.
The Future of CAD/CAM in Dental Labs
With ongoing advances in AI-assisted design, multi-axis milling, and hybrid manufacturing (combining milling with 3D printing), CAD/CAM technology continues to evolve rapidly. Dental technicians who invest in learning these platforms position themselves at the forefront of the industry.