Marta Lizza · June 13, 2013
Dental photography is important to us as technicians. It's a useful tool for communication, marketing, self assessment, learning, etc. It can be a little overwhelming in the beginning but I've learned...See more you don't have to be a professional or even know a lot about your camera to get some really good consistent results with only an elementary understanding and some basic bits of knowledge.
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For years, porcelain was the material of choice for denture teeth because of its ability to replicate the appearance of natural dentition. But as we entered the 1990s, acrylic denture teeth had replaced...See more porcelain as the industry standard; in fact, the use of porcelain teeth had dropped 50% during the previous decade. Acrylic teeth offered several functional advantages: they were kinder to opposing dentition with less trauma to the bone and offered easier occlusal adjustment. However, earlier materials tended to craze and check and weren’t as esthetic as the tried-and-true porcelain. Over time, cross-linking techniques were refined, resulting in more durable acrylic teeth. Improved opalescence, translucency and shade consistency—especially among the new generation of composite teeth—further contributed to the growing use of acrylic teeth. Visit LMTmag.com tomorrow for another LMT Memorable Moment.
DENTAL TEAM: Scott Atkin, Creative Dental Laboratory and Dr. Michael Foley, both in Scottsdale, AZ RESTORATIVE PROBLEM: A 79-year-old male patient with an existing PFM full mouth rehab needed a classic...See more A3 shade replacement bridge for teeth #11 through #15. TREATMENT PLAN: A five-unit Crystal Diamond full contour bridge was prescribed. Crystal Diamond was chosen for its excellent translucency and strength, ideal for highly esthetic anterior and posterior metal-free restorations. FABRICATION PROCESS: The case was scanned using a 3Shape D710 scanner and milled using Delcam software on a DentMill 4 milling machine from Digital Dental Lab. After milling, Atkin infiltrated the non-colored zirconia with a combination of Tanaka Zircolor and Zirkonzahn's Color Liquids Prettau® Aquarell shading liquids using green micro-brushes to ensure uniform application of the shading liquids. The technique, based on the instructional Shading Techniques DVD provided by Dental Laboratory Milling Supplies, allows for gradient transitional shading and high translucency. The sintering process must take into account the type of zirconia used and the number of restorations sintered at one time. Crystal Diamond is a high-heat zirconia, and generally the larger the mass and weight--like this five-unit bridge--the longer the heat-soak temperature. The accuracy and programmability of a sintering oven is key to achieving esthetic results for full contour zirconia; the laboratory used the high-temp Sintermax TI700 from Sintering Ovens.com and a custom ramp and heat-soak program specifically for long-span, full contour bridges. Zirkonzahn Zirconia Stains and Glaze were used post-sintering to endow natural tooth characteristics. Except for using different temperatures, the staining and glazing method was the same as those used with other ceramic restorations. Because of the underlying shades and gradients created using pre-sintering shading liquids, very little staining was needed on the final restoration. The patient and the doctor were pleased with the results and the fact that the color of the solid zirconia bridge matches the adjacent PFM restorations. CONTACT: For details, call Dental Laboratory Milling Supplies at 480-948-0466 or visit www.dentalzirconia.com.
DENTAL TEAM: Ken Upright, Oxford Crown & Bridge, LLC and Dr. Shelley Olson, DDS, FICD, Granville Family Dentistry, both in Oxford, NC RESTORATIVE PROBLEM: A female patient fractured the entire facial...See more surface and buccal cusp of tooth #4, which had an old MOD amalgam restoration. Due to a 2mm diastema, the entire mesial aspect of the crown would be exposed in the patient's smile, so shade quality was a foremost concern. TREATMENT PLAN: Because of her positive experiences with the material, Dr. Olson prescribed a Delta Zirconia full contour crown to restore tooth #4. High Translucent Delta Zirconia, used for fabricating full contour restorations, full contour bridges, inlays and onlays offers excellent translucency for these types of restorations. High Strength Delta Zirconia is also available for copings and two- to 14-unit bridges. FABRICATION PROCESS: Dr. Olson performed the appropriate build-up and prepared the tooth per suggested guidelines. Upright sent the articulated model and prescription to Aurident's Delta Milling Center for scanning, design and fabrication. Upon return, Upright checked contour and interproximal and occlusal contacts and used rubber wheels to give the crown a smooth finish. He then blasted the crown lightly to prepare the surface for stain and put it in an ultrasonic for about 10 minutes in a 10% acetone solution. For staining, Upright used the same materials he uses with traditional porcelain, but fired them 20-25°C higher. He prefers to accomplish occlusal anatomy staining and incisal/cusp staining in two separate firings so that they don't run together. Therefore, for the first firing, he concentrated on achieving a realistic, gradient body shade and occlusal anatomy stain. For the next firing cycle, he stained the occlusal and incisal portions, as well as cusp tips and occlusal slopes. Once he was satisfied with the basic shade, he applied a glaze powder used on zirconia-compatible porcelains for a third firing cycle, taking care to experiment with the consistency. If the glaze is too thin, it cracks on the surface; if it's too thick, it can appear milky and distort the shade. Once the crown was seated, the dental team and patient were extremely pleased with the results, particularly the nearly undetectable emergence profile and post-op tissue adaptation. CONTACT: For details, call Aurident at 800-422-7373 or visit www.aurident.com.
DENTAL TEAM: Gyu Cho, CDT, 3D BioCAD Milling Center, Renton, WA and Dr. Ronald Bryant, Seattle RESTORATIVE PROBLEM: The patient presented with severe occlusal wear on his natural teeth; the lower anterior...See more teeth were also very crooked and discolored. The existing crowns also exhibited wear, tissue retraction, dark margins and uneven shades from one crown to the next. Teeth #5, #12 and #14 were missing, requiring implants. TREATMENT PLAN: A full-mouth restoration with 28 units was proposed and had full compliance from the patient. The team opted to use gold-hue abutments to provide a very natural, warm appearance beneath the restorations—full contour 3D BioCAD zirconia for all the molars and 3D BioCAD zirconia copings with layered porcelain for all bicuspids and anterior units. 3D BioCAD was chosen because of the material's esthetics and translucency; the discs are manufactured using isostatically pressed Tosoh zirconia powder under high pressure from all directions, versus uniaxially-pressed zirconia powder which is pressed from only one direction. This provides a denser zirconia that eliminates any micro-voids in the material which can ultimately lead to failure; therefore, it's capable of being used for long-span bridges and other applications not possible with uniaxially-pressed discs. FABRICATION PROCESS: The models were scanned with a 3Shape D800 benchtop scanner and milled on a Roland 5-axis milling unit in 3D BioCAD's in-house milling center. After the units were milled and sintered, Cho used Zirkonzahn's shade liquid to enhance the translucency and natural esthetics of the shade. He then used Ivoclar Vivadent e.max Ceram Glaze Paste to easily achieve a natural-looking glaze. CONTACT: Call 3D BioCAD at 877-878-3348, 425-227-4333, email email@example.com or visit www.3dbiocad.com.
Brea, CA - VITA is pleased to announce that Puche Dental Lab, Innova Dental Inc., Magnusen Orthodontic Lab, Michaelangelo Dental Studio, Castable Ceramics, Artistic Dental Design, Inc., Pacific Dental...See more Inc., Brabant Dental Lab, R-dent Dental Laboratory and Biogenic Dental Corp. have completed comprehensive shade training in VITA shade management and communication, earning recognition as official VITA Certified Shade Laboratories. To achieve this designation, each lab underwent extensive VITA specific training to increase their shade management proficiency. With this new expertise, the labs are able to offer expert advice and case planning support to their customers, while acting as the ultimate resource in shade management and esthetics by minimizing remakes, improving shade accuracy and producing accurate shade communication. To achieve ideal outcomes, the new VITA Certified Shade Labs can utilize VITA's superior shade taking products and materials, including the VITA Easyshade Compact, VITA Classical Shade Guide, VITA 3D-Master Shade Guide, VITA Bleachedguide 3D-Master and VITA Linearguide 3D-Master. As part of their certification, the labs have the ability to provide VITA shade devices directly to their clientele. Vident has been a provider of innovative dental products since 1985 and is the North American subsidiary of VITA, manufacturer of the internationally recognized Classical Shade Guide, 3D-Master Shade System, Easyshade Compact, VITA ENAMIC and other quality VITA restorative materials. For information, contact Peter Newell at 800-828-3839, ext. 225 or visit Vident's website at www.vident.com.
New lighter and more translucent zerion shades, along with larger blank sizes for ZrO2 customized abutments, are now available for CARES laboratories.
VITA is pleased to announce that Magnusen Orthodontic Laboratory has completed comprehensive shade training in VITA shade management and communication, earning recognition as an official VITA Certified...See more Shade Laboratory. To achieve this designation, Magnusen underwent extensive VITA specific training to increase their shade management proficiency. With this new expertise, Magnusen Orthodontic Lab is able to offer expert advice and case planning support to their customers, while acting as the ultimate resource in shade management and esthetics by minimizing remakes, improving shade accuracy and producing accurate shade communication. Owner Dave Magnusen worked with Vident Inside Sales Representative, Nicole Roman. To achieve ideal outcomes, Magnusen Orthodontic Laboratory can utilize VITA's superior shade taking products and materials, including the VITA Easyshade Compact, VITA Classical Shade Guide, VITA 3D-Master Shade Guide, VITA Bleachedguide 3D-Master and VITA Linearguide 3D-Master. As part of their certification, Magnusen has the ability to provide VITA shade devices directly to their clientele. For more information, please contact Magnusen Orthodontic Laboratory at 714-751-1056.
Noritake Value Shades are additional shades that expand the existing EX-3 and CZR selection of Body and Opacious Body porcelain powders to include the VITA 3D-Master shades. They offer âout-of-the-bottleâ...See more performance for all of your prescription needs. From ZAHN DENTAL, the Noritake Value Shades offer a simple, quick and precise solution to completing VITA 3D-Master shade restorations.