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After years of speculation, CAD/CAM came to fruition in the dental laboratory in 1998 with the official U.S. launch of the Procera® AllCeram Crown, featuring an aluminum oxide coping milled at Nobel...See more Biocare’s production facility in Sweden. The success of Procera—and the introduction of a dozen new in-lab milling systems in the early 2000s—fueled intense interest among laboratory owners and made CAD/CAM the hot topic for the unforeseeable future. The automated manufacturing process afforded an efficient, consistent method of production and also opened the door to using zirconia, the strongest material on the market for all-ceramic restorations; other material options, depending on the system, included aluminum oxide, lithium disilicate, composite, gold, non-precious alloys, reinforced ceramic-based materials and titanium. As the number of systems on the market multiplied, laboratory owners who wanted to get on board grappled with purchasing decisions. Some opted to outsource, but many have made the investment; LMT’s 2013 Digital Technology survey found that 55% of full service and C&B laboratories have some type of digital equipment in-house. The extent to which CAD/CAM has revolutionized our industry in such a short time is inarguable. In just 10 years, the percentage of CAD/CAM-milled restorations fabricated by labs has increased tenfold: according to LMT’s surveys, in 2003, CAD/CAM restorations were only 4% of the total C&B workload; they now make up 41%. Visit LMTmag.com tomorrow for another LMT Memorable Moment.
October 1986, IECDT, New York City: Crowds of technicians attended Dr. Francois Duret’s lecture during which he demonstrated his chairside CAD/CAM system for the first time in the U.S. Based on micro-milling...See more technology used to make titanium microchips for computers and missile parts, the system featured a laser scanner and milling machine that could fabricate crowns, inlays, onlays and up to three-unit bridges out of Dicor® material. Touted as the system that “has the potential to change the way dentistry is done as we know it,” some attendees were concerned that chairside CAD/CAM would render laboratories obsolete and that an entire generation of technicians would lose their jobs. On the flip side, other laboratory owners saw the potential of the technology and the positive changes that might occur as a result. For instance, the late Al Sabella, MDT, Sabella Dental Studios, Hartdale, NY, said, “In the future, dental technicians will have to become familiar with engineering principles and computer readouts. This kind of technology won’t eliminate the end product, just our means of getting to it. When you measure what used to be available to us as consumers against what’s now available—such as VCRs, compact discs, the Concorde, etc.—it’s obvious that this scanner is an example of what our future looks like.” Visit LMTmag.com tomorrow for another LMT Memorable Moment.
Zirkonzahn's Georg Walcher, MDT, offers his step-by-step technique for rehabilitating an edentulous patient with implants and fixed Zirconia Prettau Bridges.
DENTAL TEAM: Manfred Pörnbacher and Clemens Schwerin, Dentallabor Steger, Brunico, Italy and Dr. Lyndon Cooper, Professor and Chair at the University of North Carolina, School of Dentistry, Department...See more of Prosthodontics RESTORATIVE PROBLEM: A young female patient lost teeth #7 through #14 in a car accident and was already wearing a provisional restoration that had resulted in pronounced jawbone atrophy. TREATMENT PLAN: The team opted for a fixed superstructure supported by six implants at sites #7 and #8 and #11 through #14. Due to inadequate bone structure, the restoration would be an occlusally screw-retained, full contour Prettau® Bridge with a gingival flange. Prettau Zirconia was chosen because it resists chipping and is ideally suited for implant-supported restorations, situations with limited space and restorations with a gingival flange. FABRICATION PROCESS: The casts, waxup and articulated study casts were scanned using the S600 ARTI scanner. The articulator scan is used to check jaw relations so virtual casts can later be correctly occluded in the software; this allows static premature contacts to be identified with the matching virtual articulator in the software. The bridge was designed using Zirkonzahn.Modellier software; the positions of the screw access canals, values for the cementation gap and marginal region parameters were defined. The customized titanium bases were virtually modified to optimize the alignment of the screw-access canals, and the software automatically adapted the virtual waxup to the gingiva and implants. A resin provisional was milled. After several weeks, the necessary adjustments were made and the final bridge was milled using Zirkonzahn's M1 milling unit. The surface of the anterior teeth--#7 through #12--were manually cut back and customized. The incisal edges were left fully contoured to obtain edge protection and eliminate chipping. Acid-free Colour Liquids Prettau Aquarell were used for shading. The framework was placed under a drying lamp for about 40 minutes and sintered in the Zirkonofen 700 at 1,600°C. Gingiva-Composite was used in the gingival area. The technician applied Stain Colour Glaze Plus and, after the stain and glaze firing cycles, the customized titanium bases were cemented with dual-curing cement. For esthetic reasons, unit #7 simply rests on the implant and is not occlusally screw-retained because the screw access channel would have been visible on the labial surface. CONTACT: Call Zirkonzahn at 800-989-8931 or visit www.zirkonzahn.com.
Axsys Dental Solutions introduces a 4-axis version of the VersaMILL Dental Machining Center for in-house fabrication of dental prostheses. Equipped with the precision and high performance components...See more of the VersaMILL. 5X 5-axis mill, the VersaMILL4X is self-contained and rigid with far greater options than current four-axis machines. The VersaMILL 4X has wet/dry milling capabilities for material appropriate processing, intelligent four-axis machining that reaches into undercuts and the ability to handle a broad range of indications including custom/hybrid abutments and dental bars. The VersaMILL’s superior construction enable it to machine a wide range of materials including zirconia, titanium, chrome cobalt, resin, wax, glass-ceramics, lithium disilicate and more. The new VersaMILL 4X is also compatible with any open CAD/SCAN solutions providing the flexibility to seamlessly process all imported or modified design files. For more information about the VersaMILL 4X or VersaMILL 5X 5-axis mill contact an Axsys Dental Solutions representative at 1-855-687-7941 or visit our Web-site at: www.axsysdental.com Axsys Dental Solutions 29627 West Tech Drive Wixom, MI 48393 www.axsysdental.com email@example.com 1.855.687.7941
The 22nd annual meeting of the European Association of Osseointegration (EAO), October 17-19, 2013, served as the platform for Nobel Biocare to launch several new innovative solutions, each focused on...See more improving patient treatment outcomes while increasing efficiency for both clinicians and laboratories. At the Convention Center Dublin, Ireland, Nobel Biocare showcased products and services which further highlight the company's commitment to leading innovation. All of the solutions presented will play important roles in Nobel Biocare's upcoming new seamless and fully integrated digital treatment workflow. New NobelProcera® 2G System gives laboratories the opportunity to build their business Reducing the time required for scanning by up to 50%, and with no compromise on precision, the new NobelProcera 2G System now offers dental labs multiple benefits at a level that can help them to grow their business. From single teeth to complex edentulous cases, the NobelProcera 2G System's increased automation capabilities and simplified workflows reduce the need for user interaction to a bare minimum, allowing dental technicians to focus on other tasks while scanning takes place, increasing the productivity of the lab. The NobelProcera 2G System can also now help labs to become more valued treatment partners. The new 2G scanner's solid model scanning capability allows for the production of highly precise digitized model surface information. This can inform the clinician's diagnostic process, involving the lab at an early stage in the treatment program, providing the opportunity to discuss restorative options for an optimum esthetic outcome. Nobel Biocare is running an exchange program which makes it easy to upgrade to the NobelProcera 2G System. Interested customers should contact their local Nobel Biocare representative today. New 'open access' gives 3Shape® customers the outstanding quality of NobelProcera® Abutments The industry-leading customized abutments from NobelProcera are now available for users of the 3Shape Dental System. After integrating with NobelProcera, 3Shape users can access the extensive global production network of NobelProcera to produce high-quality NobelProcera Abutments in zirconia and titanium for both Nobel Biocare and other major implant systems. Interested 3Shape users should contact their local Nobel Biocare representative. Availability may depend on the version in use and which 3Shape Partner has provided the Dental System. Learn more about the NobelProcera 2G System and open access at: nobelbiocare.com/nobelprocera Fully integrated digital workflow moves a step closer with NobelClinician™ Software and OsseoCare™ Pro iPad®-powered drill unit now connected The digital link that has now been established between the NobelClinician Software and the iPad-powered OsseoCare Pro drill unit will support optimal patient treatment, treatment file management and greater efficiency. Thanks to the new connection, users of the NobelClinician Software can now digitally transfer a surgery planned in NobelClinician to the intelligent OsseoCare Pro drill unit via Nobel Biocare's cloud-based network NobelConnect. The chosen implants in the correct positions and with the required drilling protocol are transferred to the OsseoCare Pro drill unit at little more than the press of a button. A patient-specific post-surgery report is now also sent straight from the OsseoCare Pro back to NobelClinician once the procedure is complete, significantly increasing the efficiency of implant placement. This new connection is an important link within Nobel Biocare's fully integrated digital treatment workflow which will become fully connected in 2014. Once in place, the full digital workflow will significantly increase predictability, efficiency and the quality of patient care at every step of the treatment process. Learn more about NobelClinician Software and OsseoCare Pro at: nobelbiocare.com/nobelclinician or nobelbiocare.com/osseocare
In July, DATRON Dynamics—the North American representative of DATRON AG high-speed machining centers and 5-axis dental mills—officially opened its new Technology Center in Livermore, CA, just...See more outside San Francisco. "We have a significant West Coast customer base and it's growing," says Chris Hopkins, DATRON Dynamics' West Coast Manager. "Having a location in the same time zone and within driving distance allows us to support them more effectively. It also makes it easier for labs in the area to schedule a demonstration and see our equipment in action." Similar to DATRON Dynamics' East Coast Technology Center in Milford, NH, the new location has the same capabilities as a fully functional milling center—from scanning the model to cutting the parts on a DATRON D5—allowing prospective customers to see live demonstrations ranging from titanium implant bars and custom abutments to zirconia crown and bridge structures. The first event at the new Technology Center is a full-day dental implant milling workshop on October 5, where attendees will be shown the full process of scanning, designing, and milling titanium implant bars and custom abutments in-house. For more information, call 603-672-8890 or visit www.datron.com.
Ivoclar Vivadent Inc. · Mar 13 - 14 · Sarasota, FL
Ivoclar Vivadent Inc. · May 5 - 6 · Canoga Park, CA
Ivoclar Vivadent Inc. · Jun 19 - 20 · Sarasota, FL
Steve Braykovich · January 20 at 1:57 am
How long does it take your mill to machine a (insert restoration type here)? This seems to be an area that the digital dental labs and milling centers are most concerned with and can likely be a...See more key criterion in their purchase of a milling machine. Of course machine cycle time is important but it is in reality, not a true gage of a milling machines production and effect on overall throughput and profitability. While the VersaMILL is capable of producing single unit zirconia restoration in as little as 6 minutes and titanium implant abutments in less than 20 minutes, our answer to this questions is typically: “How long do you want it to take”? This may, on the surface, appear to be a flippant answer but in reality we are quite serious. Often time sacrifices are made and indeed even tolerated in the pursuit of fast cycle times. Sacrifices that include: Decreased Cutting Tool Life Increased Manual Bench time Decreased Accuracy Inferior Surface Finish (i.e. Occlusal Surfaces) Poor Feature Definition (i.e. Margin Definition) Increased Design Time Does it make sense to be able to pull a restoration off of the milling machine in 4 minutes only to spend another 10 minutes on the bench to clean it up OR determine it is unacceptable thereby having to re-make it OR spend additional time designing the restoration to avoid machine issues OR spend additional money on expensive diamond tooling due to improper feed/speed rates, OR to sacrifice finish or detail, etc.? The achievement of high quality, in terms of work-piece dimensional accuracy, surface finish, production rate, wear on the cutting tools and economy of machining in terms of cost saving are the main challenges of modern dental manufacturing. Machine stability in terms of vibration dampening characteristics of the axes and spindle drive systems, spindle run-out, machine positional accuracy, cutting tool materials and geometry, machining parameters such as speed, feed, depth of cut and CAM programming strategies all play a factor in enabling you to reach your throughput and profitability objectives. We at Axsys not only have the PRODUCTS, we even more importantly, have the KNOWLEDGE and EXPERIENCE to maximize their effectiveness in pursuit of your goals and objectives. With our products we can provide you with the throughput you need to be competeitve while enabling you to ship superior product to your customers while yeilding high, predictable profits. You may even find that with the VersaMILL and our expertise, an extremely quick return on investment can be realized in zirconia restoration alone; thanks to the tooling cost savings associated with our extremely long tool life (in many cases over 200 units per tool) from tooling that costs a fraction of what competitive solutions offer. Contact Us today to learn more about the Axsys Advantage so we can put our experience to work for you.
Tim Tyndall · February 15, 2012
For the last three years, I've been involved in titanium research and development with Precision Milling Center in West Valley City, UT, and read with interest Luke Kahng's recent article on titanium (How...See more to Fabricate an Esthetic Porcelain to Titanium Restoration, LMT November/December 2011, Click here to Read). The piece is well written and supported with excellent photography. However, I'd like to add some technique recommendations that are critical to the success of processing porcelain-fused-to-titanium restorations: When designing the framework, follow your manufacturer's instructions regarding minimal thickness, usually .4mm for anteriors and .6mm for posteriors. Metal preparations should always be done with SHP burs designed just for titanium. As Khang says, always cut in one direction and also use a maximum speed of 15,000rpm. Never use more than 2-2.5 bars or 30-35 psi of pressure when sandblasting titanium. Also, sandblast at a 45o angle and never use a particle size less than 120-150 microns of pure aluminum oxide abrasive. The article instructs you to blast the inside of the frame but first blast the outer surface prior to porcelain application; the inner surface of the abutments will be sandblasted after firing cycles to remove the oxide that forms internally. To clean the inside of the abutments, use a 50-micron-grit abrasive and blast at 2 bars or less of pressure; a larger grit size can damage the margins. After sandblasting, bench set the titanium frame for 5-10 minutes (not to exceed 30 minutes) to undergo the passivation process. This step is critical to the success of bonding to titanium; during this time, titanium naturally develops a very fine oxide layer that prevents corrosion and is the contributing factor for biocompatibility of the material. Failure to implement this step will lead to failure of the restoration. Avoid ultrasonic cleaning after sandblasting; steam cleaning is recommended by most manufacturers. GC recommends that its GC Initial Porcelain Ti™ Bonder be applied in a thin enough layer that the coping shines through. When applying the bonder, brush out pooling and thick streaks of the bonder for a thin, uniform coating. Properly fired bonder surfaceis dark and has a slightly shiny appearance; gray patches of fired bonder indicate the use of too much bonder. GC also recommends that the first layer of opaque is applied as a very thin wash on the Ti Bonder treated surface; apply additional layers as needed along with appropriate modifiers. Complete the porcelain buildup, finish contours, set occlusion and glaze. When polishing and cleaning titanium after the glaze, use polish wheels and high-shine compounds specifically designed for titanium. Polish the exposed titanium finish lines, wait 10 minutes for the passivation process to occur, then steam clean the restoration. This passivation process seals the surface of the titanium and prevents corrosion that would discolor the metal later.