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Vident, a VITA® Company · Sep 20 8:00 am to 5:00 pm · Brown Deer, WI
Since their introduction in the 1950s, PFM restorations have been the bread-and-butter of C&B and most full service laboratories. In fact, as recently as 2005, only 17% of C&B workloads were metal-free....See more However, with the proliferation of metal-free materials and technologies, we’re nearing the tipping point: 45% of C&B workloads are now comprised of metal-free restorations, according to LMT’s 2013 Porcelain Survey.
Foreign Dental Work Put to Test, an investigative report about lead found in restorations made in China was the talk of the industry when it aired in February 2008 on Ohio’s WBNS 10TV. The story...See more covered an Ohio woman who had experienced pain and infection in her jaw after her dentist placed an ill-fitting, three-unit PFM bridge the previous year. After learning the bridge was made in China, she had the bridge removed and tested for hazardous materials, and lead (160ppm) was found in the restoration. In addition, the TV station ordered eight PFM crowns from four labs in China and also had them tested; one of them tested positive for lead (210ppm). The media coverage fueled objections to offshore outsourcing and even breathed new life into the debate about mandatory laboratory certification and registration. The ADA announced it would do its own independent testing and released its findings a year later: scientists analyzed 44 different porcelain powders and 102 finished PFM crowns from both domestic and foreign laboratories; results ranged from below detectable to 113ppm in the powders and an average of 46ppm in the crowns. The conclusion: there are naturally occurring trace amounts of lead in porcelain, but no evidence of leaching into the mouth. Visit LMTmag.com on Monday for another LMT Memorable Moment.
Invented by Dr. Itzhak Shoher and Aharon Whiteman, CDT, first-generation Captek™ was introduced to the international dental community in 1993. The unique capillary technology took the PFM world by...See more storm because it produced a high noble metal coping right on the refractory die without casting. Dentists and technicians alike were taken by its resulting thin, gold-colored copings and ability to maximize soft tissue health; Captek remains an ideal option for patients with any type of predisposition to caries or perio concerns. In 2007, Captek Nano™—stronger and thinner than the original materials—was introduced. The technology was sold to Argen in 2011 and, soon after, the company introduced Digital Captek, a 3D-printing service. Visit LMTmag.com tomorrow for another LMT Memorable Moment.
Although PFMs were still considered by many to be the esthetic standard for clinical longevity, pressable ceramics—starting with IPS Empress and Optimal Pressable Glass (OPC)—began to drive...See more the metal-free dentistry movement in the late 1980s. The improved esthetics and biocompatibility—coupled with soaring precious metal prices—quickly made the pressable technique a successful and cost-effective way to fabricate metal-free restorations. Later, the technique was adapted to create press-to-metal and press-to-zirconia restorations. Visit LMTmag.com on Monday for another LMT Memorable Moment.
LMT took six impressions of the same prep and anonymously sent them to six different laboratories along with prescriptions for non-precious PFM crowns; one was made in the Philippines. In this ground-breaking...See more experiment in 1985—with LMT Publisher Judy Fishman as the patient—we wanted to know: could a dentist tell the difference between the $35 crown and the $75 crown? Among our panel of dentists, no one crown was rated head and shoulders above the rest. Although not uniform in their assessments, the dentists could not discern which was the most expensive and which was the least; in fact, several of them rated medium-priced crowns better than the higher-priced ones. The Crown Experiment—an LMT tradition repeated three more times in our history—demonstrated that when dentists choose a laboratory, perception is as much a factor as the quality of the crown itself, proving the value of laboratory positioning and marketing. In 2007, we kicked it up a notch and created The Crown Challenge, which invited readers to use a duplicate model to fabricate the same PFM unit as the one featured in LMT’s latest Crown Experiment. The response was overwhelming: 228 readers took us up on the challenge—LMT had to rent extra office space to accommodate the entries and the judging!—and a panel of evaluators chose sixteen finalists and four favorites based on a multitude of technical criteria. Visit LMTmag.com tomorrow for another LMT Memorable Moment.
CAPTEK is a non-oxidizing PFM system for copings and bridge frameworks. Captek can be fabricated in-house with simple web-based training or purchased complete through many certified regional outsource...See more centers. The Captek brand is appreciated by dentists and laboratories for the productâs excellent esthetics, biocompatibility, strength, versatility and cost control. It was voted by dentists as the "Townie Choice" for best PFM restoration for seven consecutive years and received a JDT "Wow" award in 2008 and 2010.
Known for its ceramic, veneering and framework materials, NORITAKE manufactures EX-3 for PFM restorations, CZR for zirconia, and CZR Press and EX-3 Press for pressable systems. Available exclusively through...See more Zahn Dental, these quality porcelains provide ease of handling, natural color matching, excellent translucency, and resistance to fracture and chipping.