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Use of Zirconia-Reinforced Lithium Silicate (ZLS) to Restore Stained Teeth
Attaining desired esthetics and a strong final outcome
In this case involving a 41-year-old male patient, teeth Nos. 5 through 12 were restored using Celtra® Duo, a zirconia-reinforced lithium-silicate chairside millable block, and CEREC® Omnicam (Dentsply Sirona, www.dentsplysirona.com). The patient presented a unique challenge because of staining caused by exposure to antibiotics at a young age and specific esthetic wishes. The Celtra Duo (ZLS) restorations were definitively cemented with Calibra® Ceram Adhesive Resin Cement opaque shade (Dentsply Sirona Restorative) to achieve the desired bond strength and esthetics and maximize procedural convenience.
• Utilizing a new ZLS low-translucency chairside block with customized stain options can be successful in masking dark tooth shades. Minimum axial wall reduction is 1.0 mm to 1.5 mm for this material; however, an increased material thickness was used to better mask the dark tooth shade (preferably >2mm).
• Using an appropriate definitive cement that combines ease of use and shade choices (in this case opaque) can enhance the outcome for dentist and patient.
• When patients desire replication of existing tooth shape and/or position, the use of features in CAD/CAM software simplify workflow.
About the Author
Jason H. Goodchild, DMD
Associate Professor and Chairman
Department of Diagnostic Sciences
Creighton University School of Dentistry
Clinical Education Manager
Focus North America
Dentsply Sirona Restorative