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ePaper created 2017-08-07, 09:25:33 | version 1.38.0
A4 I N DUST RY N EWS Dental Tribune U.S. Edition | August 2017 Obsidian lithiuu silicate cerauic restorative uaterial can be used for cerauic fused to uetal, all-cerauic and chairside-uilled cases. Photo/Provided by Glidewell Laboratories CDA BOOTH NO. 819 Restorative can be used for virtually any indication in the mouth By Glidewell Laboratories Staff Obsidian® lithium silicate ceramic is a state-of-the-art restorative material that can be used for ceramic fused to metal, all-ceramic and chairside-milled cases. According to the company, this versa- tility enables clinicians to prescribe a single material for virtually any indica- tion in the mouth. A simplified workflow can ensue because using Obsidian can facilitate a cohesive appearance across the arch, even when the oral situation demands multiple types of restorations. According to Glidewell, Obsidian of- fers more than four times the flexural AD strength and twice the chip resistance as traditional feldspathic porcelain. Fur- thermore, the translucency and esthetics of the material match those of dentition, making Obsidian the optimal combina- tion of utility and beauty, the company asserts. Pressed to metal The latest release in the product line, Ob- sidian Pressed to Metal, provides a PFM- like restoration for today’s clinician. Rather than fusing feldspathic por- celain to cast metal, Obsidian lithium silicate ceramic is pressed to laser-sin- tered understructures to form modern- ized ceramo-metal restorations. Each case is designed digitally and fabricated through unique computer-controlled processes, for precise restorations. The understructures are made through a method in which a programmable laser beam strikes metal powder to build the desired shape, layer by layer. The anato- my is formed by heat-pressing lithium silicate ceramic into a 3-D printed mold. Finished Obsidian Pressed to Metal crowns and bridges can achieve far great- er strength than their conventional PFM predecessors. According to the company, these natural-looking, chip-resistant restorations are ideal for covering dark preps and endodontic posts. Indications include crowns and bridges anywhere in the arch, and screw-retained and ce- mented implant restorations. All-ceramic Obsidian All-Ceramic restorations are made from the same lithium silicate ce- ramic used for the pressed to metal res- torations, meaning that monolithic and ceramo-metal prostheses can be placed adjacent to one another with successful results. According to the company, these all- ceramic restorations mirror the vitality and translucency of natural dentition, and are indicated for individual anterior and posterior crowns, veneers, inlays, on- lays and three-unit anterior bridges.