In First Impressions George Freedman, DDS, gives readers a brief summary of products that have recently been introduced to dentistry, based on his clinical experience.
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V4 ClearMetal Matrix System |
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Most posterior interproximal restorations are undercured. The metal of the matrix is an all-too-effective barrier to the polymerizing rays of the curing light. Mylar matrices are transparent but cannot reliably create an anatomical posterior surface or contact. The ideal posterior Class II matrix system must offer the benefits of a thin metal material and the transparency for curing irradiation. Ultradent Products has recently introduced its pioneering V4 ClearMetal Matrix System that heralds the next generation of posterior restoration adjuncts, including 3 highly innovative components that make the patient’s restoration better and the clinician’s life easier. The Ni-Ti V4 ring (available for molars and premolars) is strong and durable, developing ideal interdental tooth separation with an excellent grip. It parts the teeth just enough to compensate for the thickness of the matrix and achieve a predictable, tight contact area. The major revolutionary design is the transparency of the retentive v-shaped tines, allowing the dentist to cure through into the contact area. The ClearMetal Matrix is dotted with microwindows permitting transmatrix polymerization (a first with metal matrices). The metal is malleable and nonstick for added ease of use. ClearMetal matrices are anatomically designed to match the natural contours of the tooth and to minimize finishing. The last component of the V4 System is the transparent, segmented, light-cure-through V4 Wedge. This has been developed primarily to secure, adapt, and seal the matrix below the gingival margin (not to further separate the teeth, which is a job for the V4 ring). The V4 ClearMetal Matrix Sys-tem is indicated for all Class II restorations, including deep cavities restored with bulk fill. Cure-through is the way to go! |
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G-ænial Universal Flo |
 The profusion of flowable composites in the dental market can be rather perplexing. In the past, these materials represented a compromise; easier insertion balanced by somewhat diminished wear and durability. Research and development have eliminated these compromises to the extent that today’s flowable composites can be used with the same confidence as other classes of restorative materials. The wide range of flowable chemistries and physical properties make them ideal for a variety of clinical applications, but it is crucial to identify a material’s specific indications prior to utilization. GC America’s G-ænial Universal Flo has higher wear resistance, strength, and gloss retention, rivaling many traditional composites. Available in 15 shades and 3 opacities, it is indicated for Class I, II, III, IV, and V restorations, providing easier handling and simplified placement for all. It is also recommended as a base, liner, and pit-and-fissure sealant. The newly designed syringe and tip delivery system minimizes waste while permitting excellent operator visibility. It is bis-GMA-free and is highly thixotropic with an excellent flow for easy placement, avoiding air voids during insertion. Its 200 nm particle fillers are the smallest of all the leading composites and have a higher radiopacity to facilitate future radiographic diagnostics of health or disease. Once the restoration is polymerized and polished, it maintains its high gloss better than most leading flowables and nanohybrid composites. G-ænial Universal Flo eliminates the compromise that practitioners faced when considering flowable resins; not only does it have superior handling and ease of placement, but it is equivalent to or better than many conventional composite materials.For more information, call (800) 323-7063 or visit gcamerica.com. |
Dr. Freedman is a founder and past president of the American Academy of Cosmetic Dentistry, a co-founder of the Canadian Academy for Esthetic Dentistry, and a Diplomate of the American Board of Aesthetic Dentistry. He is a visiting professor at the Universita di Firenze, Florence, Italy. He is the materials editor for Dentistry Today. He is the author or co-author of 11 textbooks, including his most recent textbook Contemporary Esthetic Dentistry (Elsevier), more than 700 dental articles, and numerous webinars and CDs, and is a team member of REALITY. He lectures internationally on dental aesthetics, adhesion, desensitization, composites, impression materials, and porcelain veneers. A graduate of McGill University in Montreal, Dr. Freedman maintains a private practice limited to aesthetic dentistry in Toronto. He can be reached at (905) 513-9191 or epdot@rogers.com.
