Frequently Asked Questions

Below is a list of our most frequently asked questions. If you have a question that is not answered here, please click here to send us an email for a quick response.


Topics: Hydrocolloid

How many times can I boil my hydrocolloid?
Hydrocolloid tubes and cartriloids may be boiled a total of three times. Unused materials that have already been boiled are not wasted; simply remove them from the water compartment and allow to return to room temperature, then reboil with the next batch. Mixing previously boiled materials with new 'out of the box' materials in the same boil cycle is not a problem. Simply mark reboiled materials with permanent marker or rubber band, and use those first.


What are the proper temperatures for my hydrocolloid unit?
Proper temperatures for all hydrocolloid processors are as follows:

Boiling Compartment - Static temperature when not boiling - 150°F
Storage Compartment - Static 150°F
Tempering Compartment - Static 110°F
How long can I store my hydrocolloid?
One of the great advantages to hydrocolloid is that a week's worth of impression material may be processed at once, and maintained for immediate use for the entire work week. The length of time liquified materials will store is based on proper boiling (materials heat up with water, then boil for 10 minutes) and storing at 150°F.
Green Heavy Body - 5 days
Light Gray Slate - 4 days
Light Blue Agarloid - 5 days
Lavender Acculoid - 5 days

What syringe material is compatible with my tray material?
All DUX Hydrocolloids are compatible with each other. Syringe materials are differentiated by color, gel strength, and working time. Tray materials are differentiated by color, gel strength, tempering and gelation times.


How long do I leave the impression in the mouth before it's fully set?
Setting time in the mouth is based on use of room temperature water. All materials will gel in 5 minutes except one-Lavender Acculoid requires 7 minutes to gel.


How do I disinfect my hydrocolloid impressions?
Hydrocolloid impressions may be disinfected by immersion in one of the following: Sodium Hypochlorite, Iodophor, Acid Gluteraldehyde.


Do I have to pour my hydrocolloid impression immediately after removing them from the mouth?
Product advancements now allow you to pour your hydrocolloid impressions when it is convenient for you. See Extend-A-Pour.


How long should I be tempering my tray material?
Ideal tempering times are determined using a temper bath setting of 110°F / 43°C . Tempering times may be varied by +/- one minute. A longer tempering time will yield a thicker viscosity; shorter tempering times yields a thinner viscosity.

Green Heavy Body - 7 minutes @ 110°F / 43°C
Light Gray Slate - 5 minutes @ 110°F / 43°C
Light Blue Agarloid - 4 minutes @ 110°F / 43°
Lavender Acculoid - 7 minutes @ 110°F / 43°C

What is the proper way to boil my tubes and cartriloids?
Tube caps should be tightened, then placed in the water bath cap down. Cartriloids are placed into the Cartriloid Basket with the metal cap up.


How do I change the fuse on my hydrocolloid processor?
The B-Tron hydroprocessor has a fuse for each water bath. Each fuse is held by a gray flush mount fuse holder located on the back of the machine base. Unplug the B-Tron, and carefully rotate it to access the back of the machine. Using a dime, or screwdriver, remove the fuse holder by turning the gray cap one quarter turn counter-clockwise. Replacement fuses should be identical to the original. Contact customer service to verify proper replacement fuse. Install in reverse order of removal. Older hydrocolloid processors utilize a single fuse holder that can be identified as a black cap that is easily removed by hand. Turn the fuse holder cap one quarter turn counter-clockwise. Replacement fuse should be identical to the original. Contact customer service to verify proper replacement fuse.


Do I really need to use PrepWet?
Unlike all other impression materials, hydrocolloid works best in a wet mouth. Drying the preparations is an unnecessary step and can actually compromise results. PrepWet is a surfactant that is used to wet the teeth prior to introducing hydrocolloid impression materials. It simply enhances the ability of the hydrocolloid to flow into and around detailed tooth structure.

Identic Syringable

Which alginate should I use, Regular or Fast set?
For first time users, regular set might be an advantage because it gives the operator more working time. When proficient, switch to fast set. Timing plays a key role with this impression system; the alginate must be mixed simultaneous or just prior to syringing the hydrocolloid component. If alginate is mixed too early, or if syringing takes too long, the alginate may build up too much body resulting in displacement of the hydrocolloid. To ensure accuracy, marginal detail must be captured in at least 2 mm of hydrocolloid. Capturing margins in alginate is not desirable and may compromise accuracy.


Can I use any alginate with this system?
Yes, Identic Syringable is made to bond perfectly to Identic Dust-free Alginate but should bond adequately to any alginate. Though alginate is hydrocolloid, it is of irreversible type which means it cures by chemical reaction and that reaction is not reversible. The hydrocolloid syringe material is reversible hydrocolloid and sets, or gels by lowering it's temperature until it becomes solid. Generally the two do not bond to each other very well, however, DUX has developed a matched system that augments ingredients common to both. This provides a dependable bond.


Do I use this in a wet field or should I dry the area prior to making my impression?
Because hydrocolloid sticks to anything dry, it is advisable to wet the preparations prior to syringing hydrocolloid. This is a true advantage, and unlike elastomerics that are susceptible to moisture contamination. Ropey saliva should be suctioned from the area.


Is Identic Syringable more or less accurate than other materials?
Provided that the margins in the final impression are in hydrocolloid of at least 2mm in thickness and the impression is poured immediately following removal, the impression should be as accurate as pure reversible hydrocolloid. Alginate is the weak link. If any margins are in alginate, the impression should be remade. Dimensional stability may be compromised if not poured right away.


Is tray adhesive necessary when using Identic Syringable?
Adhesive is not necessary when using a rimlock tray, or a tray with locking perforations. Why is this system recommended for making temporaries? When using alginate as a matrix for making a temporary crown, the surface texture of the alginate will directly effect the smoothness and quality appearance of the temporary material that sits against it. If a doctor uses Identic Syringable for the matrix, and liberally syringes the hydrocolloid around the virgin tooth, the resulting temporary crown will be more aesthetic and require little or no polishing since the surface of the hydrocolloid is so much smoother than alginate. NOTE: heavily decayed and/or fractured teeth with missing tooth structure can be built up to original contours with wax prior to making a temporary matrix impression.


How many preparations can I impress with Identic Syringable?
Cartriloids contain enough material to syringe around four preparations. This is the maximum number of preps that a doctor would want to attempt with this system. Because alginate mixing must be timed with syringing so that both materials are still fluid, it is not recommended that more than four preps be attempted. While doctor is syringing hydrocolloid, the alginate is building viscosity on its way to being cured; heavy viscosity that will displace the hydrocolloid away from the prep site. Additionally, syringing numerous preps takes time and may cause premature gelation of the syringe material resulting in failed bonding.


Is the syringe material strong enough to avoid tearing?
Tearing in hydrocolloid is almost always due to insufficient moisture or poor gingival retraction. Hydrocolloid sticks to anything dry! Review retraction procedures, and be sure that prep site is wet with warm water. It could also be due to stress placed on the material during tray removal.


Can I disinfect my Identic Syringable impressions?
Yes. However, because of the alginate component, an Identic Syringable impression cannot be immersed in disinfectant. It can be sprayed using the disinfection guidelines for alginate. How do I process the cartridge syringe material? Place cartridges in the Dry Processor Unit with the metal cap facing out. Depress rocker switch to turn on. Then press Boil button. Wait for green ready light. How long does it take to liquefy cartridge syringe material in the Dry Processor? From a cold start, it takes 35 minutes from start to "ready to use". A green light on the unit indicates that the material has been liquefied and stored a 150°F.


How long is the cartridge syringe material usable?
The cartridges will remain usable for 5 days when stored in the ready state (green light) in the Dry Processor.

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