Top 10 Amalgamators & Parts for Dentistry.

How to Choose a Capsule Mixer (and When You Only Need a Part)

The machine on this list is a high-speed triturator. It shakes or rotates a predosed capsule so amalgam, glass ionomer, resin-modified GIC, or a luting cement actually mixes. Two of the ten SKUs are not mixers at all: a replacement cover and a Silamat fork arm. Those belong here because that is how offices buy this category — the motor dies last; the lid and the fork die first.

Mixing physics splits the drawer. Most units (Patterson, Silamat S6, Ultramat 2, VOCO GIC Mixer, GC CM-II) use a fast figure-eight or oscillating arm. Ivoclar publishes 4,500 rpm and a figure-eight path for the Silamat S6. SDI Ultramat 2 and VOCO GIC Mixer II advertise about 4,600 oscillations per minute. 3M’s RotoMix does something different: the capsule rotates in more than one plane, then a centrifuge cycle throws air out of the mix. That is why RotoMix times are written as “mix plus centrifuge,” not as a single shake time.

Timer range has to cover the capsules you stock. SDI amalgam and Riva capsules often want 6–10 seconds; some GICs want longer. Silamat S6 and VOCO go to 30 seconds. Patterson and Ultramat 2 top out at 16. Dentsply’s older capsule mixer used 6 / 8 / 10 presets. ProMix one is a one-button mixer aimed at Surefil one and Calibra Bio — a specialist, not a universal triturator.

Buying criteria that prevent a grainy mix

• Follow the capsule, not the machine’s ego — triturate for the seconds on the capsule foil. A 4,600 rpm mixer run twice as long is how you get a hot, crumbly GIC.
• Universal vs dedicated — Silamat, Ultramat, CM-II, and VOCO claim broad capsule compatibility (type I/II, amalgam, GIC, luting). ProMix one is built around specific Dentsply materials. Do not assume every white box shakes every capsule.
• Lid safety — Ultramat 2 stops when the lid lifts. That is an infection-control and finger feature. A missing cover (item 2) is not a “faster workflow.”
• Service parts — fork arms and covers are consumables. If the office already owns a Silamat S6, a fork SKU is the correct buy, not a second mixer.
• Warranty vs physics — Patterson and SDI publish 5-year warranties; Ivoclar Silamat S6 publishes 3 years. Warranty is not mix quality. RotoMix’s extra centrifuge is the quality claim that needs a different motion, not a longer warranty card.

Mixer and parts comparison

Item	Maker	Motion	Timer	Speed (published)	Warranty	What it is
Patterson amalgamator	Patterson	Conventional trituration	1–16 s programmable	Not published on the house spec	5 years	Compact alloy / GIC mixer (8.5" W; 6.8" D closed / 9.1" D open)
Amalgamator cover	Varies by unit	—	—	—	—	Replacement lid — not a mixer
Silamat S6	Ivoclar	Figure-eight	1–30 s	4,500 rpm	3 years	Universal capsule / injection-capsule mixer, removable cover
Capsule Mixer CM-II	GC America	High-speed digital trituration	Manual + pre-set modes	High-speed (GC does not lead with an rpm number)	—	Works with virtually all encapsulated materials including amalgam
RotoMix	3M / Solventum	Multi-axis rotation + centrifuge	Example: 8 s mix + 3 s centrifuge	Dealer listings ~2,850 mix / ~2,950 centrifuge	—	Different physics — denser, lower-void mix vs a horizontal shake
GIC Mixer (VOCO II)	VOCO	Oscillating	1–30 s, two time settings	4,600 rpm	—	Type I and II capsules (GIC, amalgam, MTA-style)
Ultramat 2	SDI	High-speed oscillation	1–16 s crystal timer	4,600 osc/min ±2%	5 years	Multi-use; lid micro-switch stops the cycle
Dentsply capsule mixer	Dentsply Sirona	Conventional	6 / 8 / 10 s presets	~4,550 (dealer listings)	—	Amalgam and GIC capsules, transparent lid
ProMix one	Dentsply	One-button trituration	Dedicated cycle	—	3 years (dealer)	Aimed at Surefil one and Calibra Bio, not a universal amalgamator
Silamat S6 fork arm	Ivoclar	Same as S6	—	—	Follows the unit	Replacement fork only

Amalgam capsules · Capsule mixers

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1. Patterson® Amalgamator Unit

Patterson’s house amalgamator is a compact triturator with a 1–16 second programmable timer, low-vibration motor, and a five-year warranty. Published footprint: 8.5" wide, 7.1" high × 6.8" deep closed, 8.6" × 9.1" open. It is sold for alloy and glass-ionomer capsules — the everyday mix of a GP who still condenses amalgam and lutes with encapsulated GIC.

Patterson does not publish a Silamat-style rpm on the common spec sheet. Treat time as the variable you set from the capsule, not from a ranking table. The open-vs-closed depth matters on a crowded 12 o’clock counter; measure before you assume it fits under a cabinet.

Who it is for: Patterson-contract offices that want one quiet mixer and a long warranty without an Ivoclar or SDI badge.

Tradeoff: 16-second ceiling. If you stock a capsule that wants 20–30 seconds, Silamat S6 or VOCO is the safer timer. This is not a RotoMix; you will not get an automatic centrifuge cycle.

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2. Amalgamator Cover

A cover is a lid. It is on this list because catalogs file it next to the mixer and because offices search “amalgamator parts” when the plastic cracks or the latch dies. Without a lid you lose the safety interlock on machines that have one, you aerosolize more mix, and you fail a typical infection-control walk-through.

Buy the cover SKU that matches the mixer you own. A Silamat cover does not clip onto an Ultramat. This is not a performance upgrade and it has no timer, rpm, or warranty story of its own.

Who it is for: any office whose lid is crazed, missing, or held on with tape.

Tradeoff: if the fork is bent and the motor sounds like gravel, a cover will not save the unit. Diagnose the moving parts first.

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3. Silamat® S6 — Ivoclar

The Silamat S6 is Ivoclar’s universal capsule mixer for amalgam, glass ionomer, and other predosed materials, including injection capsules. Official numbers: 4,500 rpm, figure-eight mixing path, 100–240 VAC, 240 × 230 × 170 mm, three-year warranty. Dealer sheets add a 1–30 second timer and a removable cover for cleaning. Load from above, set time, start.

The figure-eight at 4,500 rpm is Ivoclar’s homogeneity claim — a different motion story than RotoMix’s rotate-then-spin, and a longer timer than Ultramat’s 16 seconds. Universal capsule fit is the reason this unit shows up in offices that mix Ivoclar cements and someone else’s GIC.

Who it is for: practices that want one mixer for many capsule brands and a published speed/path, not a house-brand box.

Tradeoff: three-year warranty vs five on Patterson/SDI. The removable cover is a cleaning feature and a part you will eventually reorder (see #10 for the fork). Still follow each capsule’s trituration time — 4,500 rpm is not permission to guess.

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4. Capsule Mixer CM-II™ — GC America

GC’s CM-II is a digitally controlled high-speed triturator with a large display, a face-mounted master switch, and both manual and pre-programmed timing modes. GC’s product page says it works with virtually all encapsulated dental materials, including amalgam, and calls out easy directional loading (capsule graphic on the arm).

The point of a GC mixer in a GC-heavy operatory is obvious: Fuji, EQUIA, G-CEM capsules get a timer UI that the assistant already understands. The point in a mixed operatory is the dual mode — presets for the daily GIC, manual for the odd amalgam or luting capsule.

Who it is for: offices standardized on GC capsules that still want a true amalgam-capable triturator.

Tradeoff: GC does not market a flashy rpm number the way Ivoclar and SDI do. That is not a defect. If you want a centrifuge cycle, you want RotoMix. If the fork on this unit dies, order a CM-II part, not a Silamat arm.

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5. RotoMix® Capsule Mixing Unit — 3M / Solventum

RotoMix is the outlier: a rotating platform and a counter-rotating capsule holder mix in more than one plane, then an automatic centrifuge cycle packs the material and drives air out. 3M’s comparison vs a conventional CapMix-style shake is shorter mix time plus a centrifuge (an example in the brochure is 8 seconds mix + 3 seconds centrifuging). Dealer tables have listed mixing around 2,850 and centrifuging around 2,950 — different numbers because the motion is different, not because the machine is “slower” than a 4,600 osc/min shaker.

Quiet operation and a touchpad with presets plus programmable times are the ergonomic extras. The clinical extra is a denser, lower-void mix on encapsulated materials that benefit from that centrifuge — something a figure-eight amalgamator does not do.

Who it is for: offices that already buy 3M encapsulated materials and care about voids in luting or restorative mixes.

Tradeoff: you cannot judge RotoMix by rpm on a Patterson-style table. Assistants must let the centrifuge finish. If you only shake amalgam 8 seconds and abort the spin, you bought the wrong feature.

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6. GIC Mixer — VOCO

VOCO’s current GIC Mixer II is an oscillating capsule mixer at 4,600 rpm, 1–30 seconds, two time settings, front power switch, low vibration. VOCO lists type I and type II capsules — glass ionomer, amalgam, and examples such as MTA vpt AC. That is a universal claim with a GIC-first name.

Two saved times are the operatory feature: one button for the daily Fuji-equivalent, one for the longer capsule, without scrolling 1–30 every time. Quiet matters more than the brochure admits when the mixer sits six inches from a patient’s ear.

Who it is for: VOCO-material offices and anyone who wants a 30-second, 4,600 rpm mixer without an Ivoclar price.

Tradeoff: the name “GIC Mixer” makes some teams hide it from amalgam. It is indicated for amalgam capsules too. Still not a RotoMix centrifuge.

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7. Ultramat 2 — SDI

SDI’s Ultramat 2 is a high-speed capsule mixer at 4,600 oscillations/min ±2%, with a 1–16 second microprocessor/crystal timer, 120/240 V, about 217 × 173 × 180 mm, 2.8 kg, and a five-year limited warranty. SDI publishes trituration examples for its own capsules (Permite, GS-80, Riva, Stela, and others). A lid micro-switch stops the cycle when the cover lifts. The single-surface cover is there for disinfectant wipe-down.

Multi-use means SDI expects you to mix other companies’ capsules too. The 16-second cap matches Patterson, not Silamat’s 30. For SDI amalgam and Riva times in the 6–10 second band, that is plenty.

Who it is for: SDI amalgam / Riva offices and anyone who wants a published frequency, a lid kill-switch, and a five-year warranty.

Tradeoff: if a capsule IFU says 20+ seconds, this timer cannot legally get you there in one run. Do not stack two cycles as a hack unless the material IFU allows it.

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8. Dentsply Sirona® Capsule Mixer

Dentsply’s conventional capsule mixer (the transparent-lid unit still on many US counters) is a preset machine: common dealer listings show 6, 8, and 10 second buttons and about 4,550 rpm, aimed at amalgam and glass-ionomer capsules. The clear lid is the training feature — you can see whether the capsule is seated before you run it.

Presets are fast for a single assistant and clumsy when the capsule wants 7 or 12 seconds. You pick the nearest time only if the material IFU allows a range. This is the mixer a lot of offices already have; the question is whether to keep repairing it or jump to a programmable Silamat / Ultramat / CM-II.

Who it is for: rooms that mix a short list of Dentsply or generic capsules at 6/8/10 seconds and value a see-through lid.

Tradeoff: not a universal programmer, not a centrifuge, not ProMix one. If Surefil one is the reason you are shopping, skip to #9 instead of assuming this lid is the same product.

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9. ProMix one™ Capsule Mixer — Dentsply

ProMix one is a dedicated one-button triturator. Henry Schein / Patterson listings tie it to Surefil one self-adhesive composite hybrid and Calibra Bio bioceramic luting cement, with a simple cycle, about 6.9 × 7.3 × 6.7", 120 V, and a three-year dealer warranty. That is a material-specific appliance, not a second amalgamator for the hygiene room.

If the office committed to those two Dentsply materials, a mixer that only does the correct cycle reduces “someone ran it for 8 seconds because that is what the amalgam button does.” If the office mixes five brands of GIC and amalgam, this is the wrong box.

Who it is for: Surefil one / Calibra Bio users who want a foolproof dedicated mixer.

Tradeoff: poor general amalgamator. Keep Ultramat, Silamat, or Patterson for alloy and GIC. Do not retire the universal mixer because ProMix arrived.

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10. Silamat® S6 Fork Arm Only

The fork arm is the capsule cradle on a Silamat S6. It is a wear part: bent tines, cracked plastic, or a loose seat will throw mix quality long before the 4,500 rpm motor fails. Ivoclar sells the arm separately so you do not replace a three-year-warranty mixer over a clip.

Install the S6 arm on an S6. Mixing time and speed do not change. If the unit also needs a cover, order both parts. If the mixer walks across the counter or sounds wrong with a new fork, the problem is no longer the arm.

Who it is for: current Silamat S6 owners. Nobody else.

Tradeoff: this SKU does not mix anything in a box by itself. Ranking it “#10 mixer” was always a catalog artifact. It stays on the list so the search term “Silamat parts” still hits the truth.

Frequently Asked Questions

Is a faster rpm always a better amalgamator?

No. Ivoclar Silamat S6 publishes 4,500 rpm on a figure-eight path; SDI Ultramat 2 and VOCO publish about 4,600 oscillations/min. 3M RotoMix uses a slower-looking rotation plus a centrifuge and is a different machine. Set the timer from the capsule IFU, not from the largest number on a comparison table.

Can one mixer handle amalgam and glass ionomer?

Most universal units (Silamat S6, Ultramat 2, GC CM-II, VOCO GIC Mixer II, Patterson) are sold for amalgam and encapsulated GIC/cements. ProMix one is the exception — it is aimed at Surefil one and Calibra Bio. Always confirm the capsule type (I vs II) fits the fork.

Why does RotoMix list two speeds?

RotoMix mixes by multi-axis rotation, then centrifuges the capsule to reduce voids. Dealer listings that show ~2,850 and ~2,950 are describing those two phases, not a weak triturator. Let the centrifuge cycle finish.

Should I buy a new mixer or a fork/cover?

If the motor and timer are fine, replace the cover or fork (Silamat S6 arm is a common part). Buy a new mixer when the timer is inaccurate, the unit will not hold a capsule, or you need a different motion (for example, stepping up to RotoMix) or a longer timer than 16 seconds.

Read next

• Top 10 amalgam capsules
• Amalgam carriers
• Best capsule mixers
• Resin cements