Dental Vacuum Formers Compared: Keystone, Meta and Handler

A dental vacuum former heats a thermoplastic sheet and pulls it tight over a stone model to make trays, mouthguards, splints and retainers, and the right one depends on how many appliances you make and what air or vacuum source you have. Chase Dental Supply carries five models from Keystone Industries, Meta Dental Corp and Handler Manufacturing, compared below using only what each manufacturer states.

Key Takeaways

• The Keystone and Meta models are built around standard 5×5 inch thermoplastic sheets, and the Proline Air Vac 2000 also accepts round resin sheets.
• The Keystone Machine III, Pro-Form 1 and Proline Air Vac 2000 each list a 5-year warranty on parts and labor and are made in the U.S.A.
• The Proline Air Vac 2000 has no motor: it uses the lab or operatory compressed air supply, so it is compact and quiet.
• The Meta #908 lists a heavy-duty spring and latch, a rotating heater hood and an 11 1/2 x 7 x 8 1/2 inch footprint.
• The Handler 55VF is described as handling nearly all dental vacuum forming applications.

What does a dental vacuum former do?

A dental vacuum former softens a sheet of thermoplastic under a heating element, then lowers it over a stone model while suction pulls the plastic tight against every contour. The result is a thin, accurate shell that becomes a tray, guard or appliance after trimming.

In a general practice or dental lab, vacuum formed appliances typically include:

• Bleaching trays for take-home whitening, usually in thin, soft sheet.
• Sports mouthguards in thicker EVA or laminated material.
• Night guards and occlusal splints in hard, soft or dual laminate sheet.
• Clear retainers and orthodontic appliances.
• Custom impression trays, base plates and spacers.
• Temporary crowns and bridges using a formed matrix over a model.

For sheet thickness and material guidance, see our guides to Keystone tray, retainer and spacer sheets and Keystone custom mouthguard materials.

Vacuum vs pressure forming: what’s the difference?

Vacuum forming pulls softened plastic down onto the model with suction from below, while pressure forming pushes it down with compressed air from above. Both make good dental appliances; pressure forming is generally associated with tighter adaptation on thicker sheets.

A self-contained vacuum former has its own vacuum motor, so it plugs in and runs anywhere.

Keystone describes the Proline Air Vac 2000 as a pressure unit that uses laboratory or operatory compressed air, and states that office compressor pressure is usually greater than what smaller vacuum units generate. If you are planning that connection, our dental utility room compressor and vacuum guide covers central compressed air options.

Dental vacuum former comparison: Keystone, Meta and Handler side by side

The table lists only what each manufacturer states. Where a detail is not listed, call to confirm.

How do the five vacuum former models differ?

The three Keystone units share a 5×5 sheet format, symmetrical heating, an aluminum frame and a 5-year warranty, and differ mainly in chamber design and vacuum source.

Keystone Vacuum Former Machine III

The Keystone Vacuum Former Machine III is the fully featured Keystone vacuum unit, listed for everything from bleaching trays and sports mouthguards to implant stints, denture bases and orthodontic appliances. It weighs 22 lbs and carries a 5-year guarantee on parts and labor.

Keystone Pro-Form 1 Single Chambered

The Keystone Pro-Form 1 Single Chambered vacuum former is Keystone’s entry-level option, described as an economical unit that can still fabricate most thermoplastic appliances. A hexagonal post keeps the frame from rotating or sliding during forming.

Keystone Proline Air Vac 2000

The Keystone Proline Air Vac 2000 uses laboratory or operatory compressed air instead of an onboard motor, which Keystone says makes it compact and very quiet. It can be used to layer appliances and accepts 5×5 or round resin sheets.

Meta Dental Corp Vacuum Former #908

The Meta Dental Corp Heavy Duty Vacuum Former #908 is a compact unit designed specifically for dental applications. Meta lists a heavy-duty spring and latch to hold all types of thermoplastics, uniform heat distribution, a heater hood that rotates behind the center post and a powerful vacuum for immediate suction.

It takes 5 x 5 inch material, comes in 110V or 220V and ships with a bag of steel grits.

Handler 55VF Vacuum Former

The Handler 55VF Vacuum Former is described as an economical way to process bleaching trays, mouthguards, splints, impression trays, denture bases, copings, temporaries and orthodontic appliances. Handler states it can accommodate nearly all dental vacuum forming applications. For power and dimensions, see the product page or call to confirm.

Which vacuum former should you choose?

Match the machine to your daily volume, appliance mix and the utilities already in the room.

Dental office making chairside trays

A general practice making bleaching trays and the occasional night guard needs a self-contained unit that plugs in and runs. The Keystone Pro-Form 1 or Machine III fits that role, and the Meta #908 suits a tight countertop given its stated footprint.

Ortho lab with steady volume

Labs forming retainers and orthodontic appliances all day should look at the Keystone Machine III for its long application list and 5-year guarantee. If the lab already runs a compressor, the Proline Air Vac 2000 is a quiet, motor-free option that also layers appliances.

Mouthguard and splint heavy workflows

Thick EVA guards and laminated splints benefit from strong adaptation, which Keystone attributes to the higher pressure of office compressed air on the Proline Air Vac 2000. Pair it with the right sheet from our Keystone night guard and splint materials guide.

Small budget, buying by features

If you want the essentials without extras, the Keystone Pro-Form 1 is described as the economical Keystone unit, and Handler describes the 55VF as an economical way to process most appliances. Call for current pricing on each.

For a deeper look at the Keystone lineup alone, read Choosing a Keystone Vacuum Former.

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Frequently Asked Questions

What can you make with a dental vacuum former?

A dental vacuum former makes bleaching trays, sports mouthguards, night guards, occlusal splints, clear retainers, custom impression trays, base plates and matrices for temporary crowns and bridges. The Keystone Machine III and Handler 55VF listings also name implant stints or splints, denture bases, copings and orthodontic appliances.

What sheet size do these vacuum formers use?

The Keystone Machine III, Pro-Form 1 and Proline Air Vac 2000 use 5×5 resin sheets, and the Proline Air Vac 2000 also takes round resin sheets. The Meta #908 takes 5 x 5 inch thermoforming material. For the Handler 55VF, see the product page or call to confirm.

Does the Keystone Proline Air Vac 2000 need a compressor?

Yes. Keystone describes it as a pressure unit that uses laboratory or operatory compressed air and has no motor, which keeps it compact and very quiet. Your office or lab compressor must be able to supply it.

Which vacuum formers come with a 5-year warranty?

The Keystone Machine III, Keystone Pro-Form 1 and Keystone Proline Air Vac 2000 each list a 5-year warranty on parts and labor. For warranty terms on the Meta #908 and Handler 55VF, call Chase Dental Supply to confirm.

Are these vacuum formers available in 220V?

The three Keystone models are available in 110 Volt and 220 Volt versions, and the Meta #908 is listed for 110V or 220V. Call 888-548-7582 to confirm the correct voltage version before ordering.

The deciding factors are volume, appliance mix and whether you want a self-contained vacuum or a compressed air unit. Browse Keystone Industries, Meta Dental Corp and Handler Manufacturing at Chase Dental Supply, or email sales@chasedentalsupply.com with questions.