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Inside Dentistry
June 2014
Volume 10, Issue 6

Aquasil Ultra Cordless Tissue Managing Impression System

Faster, more precise impressions without retraction materials

Jason H. Goodchild, DMD

DENTSPLY Caulk has developed Aquasil Ultra Cordless Tissue Managing Impression Material and digit power™ Dispenser as a means for dentists to precisely place material for improved crown and bridge impressions without the need for retraction cord or retraction paste in most cases. The digit power Dispenser is a pneumatic impression device that is compatible with most dental units. It connects to an air line at the dental chair via commonly available connectors and uses digit power unit-dose cartridges. Instead of loading a backfill syringe or squeezing the 50-mL impression gun, clinicians can now simply step on the rheostat to express material while holding the impression device in a pen-grip. The small diameter intraoral tip on the impression cartridge allows placement directly into the sulcus or around a dental implant. Different sized impression cartridges are available for single- or multiple-unit cases.

Aquasil Ultra Cordless material is designed for use with a single-step dual-viscosity impression technique. Both the tray material and the wash material for this system have been formulated to provide several advantages compared to Aquasil Ultra. First, because the wash material is intended to be placed around the prepared tooth without the use of cord or retraction paste, it is designed for flow into sulcus widths of less than 0.2 mm without distortion or tearing. Compared to Aquasil Ultra, the tear strength of Aquasil Ultra Cordless impression material has been improved to prevent rips or tears at the impression margin.

An important feature of the Aquasil Ultra Cordless impression material is the potential elimination of errors due to working time/setting time violations. Exceeding the working time and/or setting time of an impression material can result in many different errors. Some examples include incomplete or inaccurate marginal reproduction, tearing, pulls/drags, lack of coadaptation, and others. The digit power cartridges are designed so that the entire impression cartridge can be expressed within the material’s intraoral working time and practitioners will still have enough time to seat the tray properly. The intraoral working time of the single-unit cartridge is 35 seconds, whereas the intraoral working time for the multi-unit cartridge is 1 minute, and the working time of the tray material is approximately 1:15 seconds. Mouth removal times for the single- and multi-unit cartridges are 3 minutes and 4:30 minutes from the start of mixing, respectively.

In summary, an Aquasil Ultra Cordless impression is a faster procedure, because it’s a retractionless impression. In most cases, there is no need for cord or paste. The intraoral working time and mouth removal time mean less chair time for the practice, reduced stress for the clinician, and less trauma for patients.

Key Takeaways

Fine cannula allows for delivery of impression material directly into the sulcus.
Optimized for placement without cord or retraction paste.
Increased tear strength.
The working time eliminates impression errors due to violation of working time and setting time.
The ergonomically designed digit power™ Dispenser uses a pen-grip.

About the Author

Dr. Jason H. Goodchild is a general dentist practicing in Havertown, Pennsylvania. He is also a clinical associate professor at the University of Pennsylvania School of Dental Medicine in the Department of Oral Medicine in Philadelphia, Pennsylvania. Dr. Goodchild’s website is

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