iTero Digital Impression System

The iTero system ensures a more accurate impression from the start, which results in a better-fitting restoration.

FOR INFORMATION ON iTero ACQUISITION INCENTIVE PROGRAMS CALL 1-877-KTR-DENTAL

iTero:
- “Having looked at all four systems, iTero has the fastest learning curve!”
- “The clearance tabs on the iTero are my favorite feature. It shows the amount of interocclusal clearance on my preparations, allowing me to make changes to the preparation before sending if off to the lab … say goodbye to reduction copings!”
- “Love the voice prompter… it tells you what to do next."

- THE DENTAL ADVISOR
August-September 2009
Volume 26, No. 07

Why Digital Impressions?

An accurate model for an accurate crown - It is critical that the model be an accurate representation of the mouth in order to create restorations that fit correctly. This is partially the responsibility of the dentist to provide accurate impressions. A study, published in the August 2005 edition of the Journal of Prosthetic Dentistry, which examined 193 rubber based impressions received at 11 different dental labs concluded that only 10.9% of the impressions had no observable errors. However even when impressions appear good, the accuracy is affected by physical properties of the materials not in anybody’s control. When dealing with elastomers such as polyether or poly-vinylsiloxane the accuracy is dependent on polymer chemistry which is prone to errors. Resulting in framework that fit the model but not the mouth.

Dental arch	Plaster Base (full model)	Dental arch on the plaster base

(Wilhelm H. Kiefer: "Mit Grips an den Gips" published by Quintessenz Verlag)

iTero Vs. CEREC, E4D, & Lava COS

Two types of digital imaging principles are currently available in the dental industry—parallel confocal and triangulation/sampling.

CAD/CAM = Well Fitting Restorations?

CEREC vs. iTero

Not all CAD/CAM Systems are created equally!

Efficiency/Ease

The learning curve for dentists and clinicians adopting iTero is modest. A Cadent certified Clinical Trainer provides comprehensive training to get your office up and running in just a matter of days. iTero also fosters easier communication channels between the dentist and laboratory. What’s more, should questions arise, there is always a digital file for the laboratory and dentist to reference while consulting about a case on-line.

Predictability

The iTero software guides you every step of the way through the scanning process. The time to complete the scanning sequence routinely requires just 3 to 5 minutes, about the time required for conventional impression materials to set. And, with no time devoted to preparing impressions trays and to clean-up, the time savings are predictable. Better still, the unmatched precision of iTero crowns requires minimal adjustment, another source of predictable time savings.

Real-time, Digital Display - Heading Off Problems Before They Arise

The unmatched visualization of the tooth prep area is one of the most lauded benefits of iTero digital impression system. Dentists visualize and analyze the prep area from a full 360 degrees. Analytical tools are also available allowing you to measure and verify proper occlusal reduction for example. All of which leads to better fitting prosthetics and reduced adjustment time for increased patient satisfaction. ••

• See magnified views and rotate the view to check for parallelism
  •
• View the color coded occlusal clearance on the monitor

Point and Click Simplicity – Digital Transfer

Once approved, you send the digital image via a wireless Internet connection to KTR Dental Laboratory. There is no need to schedule a pick up or deal with shipping forms; the digital scan arrives within minutes of being transmitted. At KTR Dental we review the digital file and send it electronically to Cadent’s manufacturing facility for milling into the physical model. What’s more, if there are any concerns or discrepancies, we can simply consult with you while you view the digital model at the same time for clarifications.

An Accurate Model

Once received by Cadent, a physical model is created that is unmatched in accuracy by any hand-poured model. iTero models work with all types of restorative materials used in dental crown and bridge production. The physical model, and die are milled and sent to KTR laboratory for completion as normal. KTR applies the aesthetics and delivers the end-result—a beautiful, precise-fitting restoration—to you all within standard service times.

An accurate model for an accurate crown - It is critical that the model be an accurate representation of the mouth in order to create restorations that fit correctly. With iTero an accurate model is not a matter of guess work. iTero, without the use of powder that adds inaccuracies to other digital systems, provides a perfect representation of the mouth. Thus guaranteeing that if it fits on the model it will not rock in the mouth.

Not only is iTero the only system that does not use any powder. It is the only system to fabricate its models by high precision 5-Axis milling machines. Lava COS models and the CEREC AC's physical model (available May 2009) are both fabricated using stereolithography, an additive fabrication process building the model one layer at a time. This produces a stepped surface, as shown in fig. 4, rather than a smooth one, leaving potential gaps along critical areas such as the margin.

Fig. 1

Fig. 2

Fig. 3

Fig. 4 LAVA COS - Stepped Surface from fabrication process

Unmatched Accuracy

At KTR Dental Lab we have further complemented the iTero system with our proprietary milling technology to provide you with a crown or fixed partial denture that has precise interior fit and outer shape. All occlusal surfaces on all types of crowns are fabricated by CAD/CAM technology to optimize occlusal contacts, at no extra cost. After receiving, you simply seat the crown or bridge with near zero adjustments needed, saving you aggravating seating appointments or time-consuming remakes.

COPING OPTIONS

• Captek
• Cercon
• Zirconia
• IPS eMax
• Katana
• LAVA
• Laser Sintered Non-Precious
• PFM
• Procera

Taking the Headache Out of Impressions
by Bret Jacobson, DDS
featured in Dentistry Today, September 2007