Dental Tribune U.S. Edition

Report examines clinical performance of BruxZir Solid Zirconia and Bridges Purpose The purpose of this clini- cal study was to determine the clinical performance of BruxZir® Solid Zirconia Crowns and Bridges (Glidewell Dental Laboratories; New- port Beach, Calif.) during an 18-month period. Clinical Evaluation Protocol At recall time, more than 390 full-contour, monolithic BruxZir restorations (crowns and bridges) were placed. All restorations were fabricated at Glidewell Dental Laboratories. Most of the restorations were cemented with self-adhesive resin cement or adhesive resin cement. Placement The following parameters were evaluated at placement: esthetics, marginal accuracy, fit,interproximalcontactsand occlusion. Restorations were evaluated on a 1-to-5 rating scale: 1 = poor, 2 = fair, 3 = good, 4 = very good, 5 = excellent. Esthetics, marginal accuracy, fit and interproximal contacts of more than 96 percent of the restorations were rated ex- cellent at placement. Very few restorations (less than 2 percent) had to be remade be- cause of improper fit. A few restorations had light interproxi- mal contacts and had to be remade. For the category of occlusion, 84 percent of the restorations received an excellent rating. In many cases, the occlusion was light, and in some cases the restoration was out of occlusion. Based on customer feed- back,GlidewellDentalLaboratoriesdesigns most of its crowns light in occlusion. Results at 18 months In December 2012, 367 BruxZir restorations were recalled and evaluated. Of the 367 res- torations observed (Fig. 1), there were: • 287 posterior single crowns • 36 units: 12, three-unit bridges • 24 units: six, four-unit bridges • 10 units: two, five-unit bridges • One, three-unit inlay bridge • Seven, implant crowns Of the 367 restorations, 121 (33 percent) hadbeeninfunctionfor18monthsand246 (67 percent) or one year (Fig. 2). The recalled BruxZir restorations were evaluated in the following categories: • Resistance to fracture or chipping • Retention • Esthetics • Resistance to marginal discoloration • Wear on zirconia/opposing dentition Restorations were evaluated on a 1-to-5 rating scale: 1 = poor, 2 = fair, 3 = good, 4 = very good, 5 = excellent. (Source: Glidewell Dental Laboratories) Fig 1: Of the 367 BruxZir restorations observed at recall, the majority (287) were single crowns. Graphics/Provided by Glidewell Dental Laboratories Clinical study in The Dental Advisor measures performance over 18-month period Fig. 2: Of the 367 restorations, 121 (33 percent) had been in function for 18 months, while 246 (67 percent) had been in function for one year. To view the full report, visit www.bruxzir.com. ChiCago BooTh No. 3213 features. Other options include the ability to order virtual study models in occlusion that contain full dentition (crowns, roots and bone) and tools to predict soft-tissue changesderivedfromorthodonticorsurgi- cal treatments. There's also an anchor-pin library for virtual TAD placement. • For dentists who treat sleep apnea and airway disorders, Tx STUDIO’s airway trac- ing tool facilitates analysis of airway anat- omy with instant measurement of total airway volume, localization and area mea- surements of maximum constriction, and automatic color-coded constriction values of the airway volume. • Oral surgeons can accurately measure important improvements,” said Dmitri Boutoussov, BIOLASE chief technology of- ficer and long-time head of the company’s innovative R&D department. NewTom compact CBCT technology Finally, the pavilion has full-size models of NewTom Cone-Beam Computed Tomog- raphy (CBCT) technology. The technology, relatively new to dentistry, is a more com- pact version of standard imaging that uses a cone-shaped X-ray beam for multiple ra- diographsthatconstructdigital3-Dmodels of maxillofacial anatomies. The NewTom VGi is reported to have the finest image quality of any CBCT system in dentistry, with a minimal dose of radiation to patients. Dentists using the NewTom CBCT tech- nology report increased treatment plan ac- ceptance, improved diagnostic capabilities and other advantages. “ i-CAT, page A17 About BIOLASE BIOLASE is a biomedical company that de- velops, manufactures and markets dental lasers and distributes and markets dental imaging equipment. Its laser products in- corporateapproximately290patentedand patent-pending technologies that provide biological treatment and clinically supe- rior performance with less pain and faster recovery. Its imaging products provide cutting-edge technology at competitive prices for the “ SOLUTION, page A16 Dental Tribune U.S. Edition | February 2012A18 INDUSTRY NEWS bone density and assess disease and de- formities such as cysts, tumors, lesions and changes of the jaw. They can deter- mine precise position of impacted teeth within the alveolar bone, as well as prox- imity to adjacent teeth and vital struc- tures such as the nerve canal, sinus walls and cortical borders. All of these options increase confidence and help to avoid complications during the course of treatment. Imaging Sciences International has built a 20-year tradition of imaging expertise and award-winning products. The i-CAT FLX is a welcome addition to the i-CAT fam- ily, for a complete 3-D treatment solution. (Source: Imaging Sciences International) best results for dentists and patients. BIOLASE's core products include dental laser systems that perform a broad range of procedures (including cosmetic and complex surgical applications) as well as a full line of dental imaging equipment and CAD/CAM systems. BIOLASE has sold more than 21,000 lasers. Other products under development address ophthalmology and other medical and consumer markets. (Source: BIOLASE)