Intraoral scanners and digital impressions are increasingly popular with clinicians due to patient comfort. Cusp Dental accepts major Intraoral Scanners (IOS) as the digital impression is a proven method for full contour zirconia restorations. Cusp designs with 3Shape DentalDesigner software and advanced laboratory procedures which provide accurate fit and superior adjacent and occlusal contact.
We accept major digital impressions from the following intraoral scanners:
- TRIOS® (3Shape)
- Carestream (Carestream)
- CEREC® (Sirona)
- iTero® (Align Technology)
For detailed instructions on submitting files, please contact us at 888-267-0660 or at info@cuspdental.com
Specify Scan Body Manufacturers
Scan Bodies are generated by both original manufacturers and third party manufacturers. As they are not yet automatically recognized, the information must be input manually. The lab may not be familiar with all third parties’ products. Therefore, when using a third party’s Scan Body, be aware that there are many things that the lab cannot recognize. Indicate Scan Body manufacturer’s name, implant system and size in the Rx instruction.
Another important thing is that Scan Body, Lab Analog, and Ti-base are linked in the CAD Library, and this cannot be changed. Genuine Ti-base cannot be used unless you use a genuine Scan Body. Many doctors may want to use genuine parts, in which case you must use a genuine Scan Body.
Purpose of PMMA Prototype
PMMA Prototype has three important check points at try-in for monolithic zirconia cases with 5-6 or more units, FPD, or even single crowns. One, check esthetics. When layering with conventional porcelain, it is possible to check and modify using bisque bake. However, with monolithic zirconia crowns, it is almost impossible to make slight corrections in the midline or change the length. Two, check the fit. Zirconia cannot be cut and soldered, so it is necessary to carefully check this stage. Three, check and properly adjust occlusion. Occlusal adjustment for zirconia requires a lot of time at chairside, and if it involves multiple teeth, it would be almost impossible to adjust.
PMMA Prototype Is Not Provisional
An additional critical point is that a PMMA Prototype is not provisional. That’s why our lab uses white color materials. If you want your patient to wear it for a few days to a few weeks and see how they feel, you can, but when you request a final restoration to the lab, you will need to return the Prototype along with all other models. Cusp does not accept cases without a PMMA Prototype.
Why Cases Are Not Accepted Without PMMA Prototypes
Unfortunately, even if you scan the Prototype intraorally or take regular impressions of an adjusted Prototype, these cannot be used as a guide. Even if you spend a lot of time adjusting, it will not be reflected correctly in the final restoration as we cannot precisely superimpose the scan from the oral cavity or the new plaster model from the impression of the adjusted Prototype to the original scan because there is no key reference point.
After you adjust the original Prototype, the lab scans the returned Prototype on the same original articulate model. We then superimpose the new scan to the original scan on the same master model to see the discrepancies. Those corrections can be reflected on the final restoration.
Prototype cannot be used as a provisional.
Any questions, contact CUSP at 781-388-0078 or info@cuspdental.com.