Dental Milling Machines: Wet vs Dry Milling — Which Is Right for Your Dental Clinic?

Digital dentistry has changed how dental restorations can be designed and manufactured. With a modern CAD/CAM workflow, digital scan data can be converted into crowns, bridges, veneers, inlays, implant restorations and other prosthetic components through computer-controlled manufacturing.

At the center of the subtractive CAD/CAM workflow is the dental milling machine.

But when choosing a milling unit, one of the first questions is:

Should you choose a dry milling machine, a wet milling machine, or a system capable of both?

There is no single answer for every clinic or dental laboratory. The correct choice depends largely on the materials you intend to process, the types of restorations you produce and the flexibility you expect from your digital workflow.

A dental milling machine is a computer-controlled manufacturing unit that receives CAM data and mechanically removes material from a prefabricated block, disc or blank until the designed dental restoration is produced.

The milling strategy, cutting tools, spindle parameters and cooling conditions must be matched to the material being processed. Research has demonstrated that different CAD/CAM machining protocols can influence the surface topography and other characteristics of zirconia restorations.

Modern dental systems generally use one of two processing approaches:

Dry milling — machining without liquid coolant.

Wet milling — machining with liquid coolant continuously supplied around the cutting area.

Some advanced systems provide both wet and dry modes in the same machine, allowing the operator to change the manufacturing method according to the selected material.

Dry milling operates without liquid coolant and is especially common for materials such as:

• Zirconia
• PMMA
• Wax
• PEEK

Dry milling is particularly popular for pre-sintered zirconia. It also avoids the additional drying step that some zirconia materials may require after wet processing.

For clinics and laboratories mainly producing zirconia restorations, a dedicated dry milling machine can provide a simple and efficient workflow.

The ADAE iMini M1 is a 5-axis dry dental milling machine designed for:

Zirconia | PMMA | Wax | PEEK

It is a practical choice for clinics and dental laboratories primarily working with zirconia and other dry-milling materials.

Wet milling uses liquid coolant during machining.

It is commonly used for materials such as:

• Glass ceramics
• PMMA
• Titanium
• Premill abutments
• Co-Cr

Wet processing is particularly important for many glass-ceramic restorations and selected metallic materials.

The ADAE iMini M2 is a 5-axis wet milling machine designed for:

Glass Ceramic | PMMA | Premill Abutments | Titanium | Co-Cr

It is suitable for clinics and laboratories that want to produce glass-ceramic restorations, implant components, and other materials requiring wet processing.

Some clinics and laboratories want greater flexibility.

For example, you may want to dry mill zirconia for one restoration and then wet mill glass ceramic for another.

Instead of using two separate machines, a combined wet-and-dry system can handle a much wider range of materials.

The ADAE iMini Pro combines 5-axis wet and dry milling in one machine.

It supports materials including:

Zirconia | Glass Ceramics | PMMA | Wax | PEEK | Premill Titanium

This makes it particularly suitable for clinics and laboratories that want maximum flexibility from one milling system.

The easiest way to choose is to consider the materials you plan to manufacture.

Mainly zirconia?
Choose a dry milling system such as the ADAE iMini M1.

Glass ceramics, titanium, or premill abutments?
A wet milling system such as the ADAE iMini M2 may be more appropriate.

Want both wet and dry capabilities?
The ADAE iMini Pro provides both milling methods in one machine and offers the widest material flexibility.

Wet and dry dental milling each have specific advantages.

The best machine is not simply the one with the most features—it is the machine that matches your restorative materials, clinical workflow, and future requirements.

Whether your clinic requires dedicated dry milling, dedicated wet milling, or both, ADAE provides different milling solutions for modern digital dentistry.