This resin-modified glass ionomer from GC America received the Catapult Vote of Confidence for its bond strength and simplicity of use.
Resin-modified glass ionomer (RMGI) cements are the go-to option for placing porcelain-fused-to-metal (PFM) crowns, full-cast crowns, and high-strength ceramic restorations.1 GC America has a long history of producing several generations of RMGI cements, each bringing marked improvements over previous iterations. The latest addition to their RMGI cement lineup, GC FujiCEM® Evolve, possesses significant advantages over all other RMGI cements.
GC FujiCEM Evolve is a radiopaque resin-reinforced glass ionomer cement indicated for various indirect restorations. It is said to have a high radiopacity as well as superior bond strength to zirconia. It has a tack-cure feature, a rechargeable fluoride release, and moisture tolerance. GC FujiCEM Evolve is available for syringe delivery.
GC FujiCEM Evolve is engineered with simplicity, strong adhesion, and simple cleanup in mind. Several advances have made this a great option for luting retentive zirconia, lithium disilicate, or metal-based restorations. First, GC FujiCEM Evolve has been engineered with a tack-cure capability, allowing the practitioner to place the restoration, tack cure, and remove excess cement quickly and effortlessly. Second, the cement has been designed with high radiopacity, allowing for easy identification on radiographs. Finally, the chemistry has been created to enhance luting to zirconia restorations compared with previous generations and other brands.2 This is a huge advantage because the market has shifted so heavily toward the use of various forms of zirconia restorations.
Indications:
Catapult Education’s Evaluation
Recently, 18 clinical evaluators with Catapult Education assessed GC FujiCEM Evolve. Among the evaluators, 89% used the product with the tack-cure method and reported that cleanup was easy to very easy. In addition, 100% found working time to be adequate and 94% felt the setting time was appropriate. Also, 89% felt that the viscosity of the material was just right. Following the review and assessment of all the findings, Catapult Education granted this product its Vote of Confidence, an honor reserved for products that receive overwhelmingly positive reviews and feedback.
Catapult Group’s Comments
Case Overview
This patient presented with a failing PFM-fixed dental prosthesis from #12 to #14, replacing #13. The prosthesis had recurrent decay on the distal-most aspect of the posterior retainer. The fixed dental prosthesis had been in service for over 20 years. The existing prosthesis and decay were removed and both preparations were refined (Figure 1)
The dental arches were scanned using a True Definition (Midmark) scanner (Figure 2)
And a monolithic zirconia fixed dental prosthesis with a modified ridge lap pontic was fabricated (Figure 3).
After completion of the try-in and adjustment of proximal contacts and occlusion, the zirconia prosthesis was sandblasted with aluminum oxide in preparation for cementation. If less than desirable retention is present, one could incorporate the use of a zirconia primer to further enhance the bond of the RMGI cement (GC FujiCEM Evolve) to the zirconia surface. In this case, this step was not necessary because both preparations possessed adequate height and retention for a conventional cementation protocol.
The new mixing tip design of the GC FujiCEM Evolve delivery system is simple and predictable and ensures that both components of the cement will be perfectly mixed. The preparations were isolated and dried for cementation. Both abutments are loaded with GC FujiCEM Evolve (Figure 4).
The cement will autopolymerize in about 4.5 minutes, giving the clinician plenty of time to seat the prosthesis. Once the prosthesis was seated, each line angle was light cured (tack cured) for 3 seconds using a VALO (Ultradent Products, Inc) curing light (Figure 5)
The tack curing of the cement will render it in an ideal doughy consistency for easy removal and allow for atraumatic recovery of excess cement. This stage of the cementation process was accomplished using a pointed scaler (Figure 6).
After cleaning off the excess cement, the prosthesis is left undisturbed with light apical pressure to allow for complete autopolymerization of the remaining cement. The ability to tack cure GC FujiCEM Evolve made the delivery of this fixed dental prosthesis simple, predicable, and efficient. The result met the expectations of those involved and will serve the patient for years to come (Figure 7)
References
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