PROVISIONAL CROWNS

[drsushant]

Indirect dental procedures imply that a laboratory fabrication interval is part of the treatment process. Patients, particularly those who are undergoing aesthetic procedures, will not accept a compromised smile or functionality this during this one- to 2-week interval. Fortunately, the profession has had chairside fabricated provisional restorative materials for the better part of a century. Luxatemp has been the benchmark for aesthetic provisional materials for many years. Now DMG America has introduced Luxatemp Ultra, the next generation provisional, indicated for temporary crowns, bridges, inlays, onlays, and veneers. It incorporates a new proprietary technology that has optimal flow characteristics and handles well. The convenient Automix and Smartmix systems are faster and more predictable and simplify the mixing and the application process. The provisional material offers functional excellent strength and cuts easily during trimming and adjustment. Luxatemp Ultra is faster curing than its predecessor and easier to manipulate inside the mouth and out. For a more natural appearance, fluorescence has been infused with the nanofiller material to make provisionals look aesthetic under all lighting conditions, a particular concern for patients with anterior provisionals who expect to smile under black light and natural sunlight illumination. Most importantly, the improved chemistry, polymerization technology and outstanding marginal adaptation of Luxatemp Ultra make temporary restorations highly accurate. The practitioner has total clinical control. Intraorally, the provisionals feature new standards for flexural strength and an excellent break resistance. Faster curing decreases chairside downtime. There are clinical situations, often involving implant therapy, where the provisional must function for extended periods. Luxatemp Ultra has excellent chemical stability and long-term durability for these cases in which the material is required to mimic natural teeth.
 

        

[drsushant]

        

[drsushant]

 Provisional Restorations 

These restorations are a negative factor in the conventional procedure that has been overcome by the one appointment in-office milling technique. In the conventional procedure, the patient must go home with a provisional restoration for an average of 2 or 3 weeks in most practices.
Bis-acryl resin, some of the most popular brands of which are ProTemp 3 Garant (3M ESPE), Luxatemp (DMG America), and Integrity (DENTSPLY Caulk), have become the most used materials for provisional restorations. Their low exotherm, moderate strength, and good color are a welcome relief when compared to the methyl and ethyl methacrylates, which were the most popular materials until just a few years ago. However, the popular bis-acryl category of provisional restorations comes at a significantly higher cost than previous materials. Both eugenol-containing and noneugenol provisional cements are popular, with TempBond (Kerr), with and without eugenol, being the most used provisional cement in the marketplace. Newer dual-cured resin-based provisional cements have been introduced that provide increased strength for tooth preparations with less retention.

        

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