The digital dentistry revolution continues to gain momentum, with CEREC technology leading the charge. However, navigating the diverse landscape of CEREC blocks (CAD/CAM blocks) can be a complex task. This comprehensive guide delves into the intricacies of CEREC blocks, exploring their types, applications, and best practices for material selection and laboratory partnerships.
CEREC Block Spectrum: Selecting the Optimal Material for Each Case
CEREC blocks represent a versatile range of pre-fabricated ceramic or resin blocks specifically designed for use with CEREC milling machines. Each material possesses unique properties, necessitating a nuanced understanding for optimal restorative outcomes. Here's a breakdown of the most prevalent types:
- Zirconia Blocks: The gold standard for highly durable restorations, zirconia blocks boast exceptional strength, aesthetics, and biocompatibility. Their impressive mechanical properties are ideal for posterior crowns, bridges, and inlays/onlays in high-stress areas.
- Lithium Disilicate Blocks: Striking the perfect balance between strength and natural appearance, lithium disilicate blocks are well-suited for anterior restorations. They showcase a lifelike, translucent quality, making them a preferred choice for crowns and veneers in cosmetically critical zones.
- PMMA Blocks: Primarily employed for their cost-effectiveness and ease of milling, PMMA blocks are best utilized for provisional restorations. They provide a temporary solution while definitive restorations are fabricated.
Material Selection Nuances: Zirconia Crowns vs. Lithium Disilicate
While zirconia crowns are renowned for their impressive qualities, they might not always be optimal for every restoration. Here's a succinct comparison for informed decision-making:
- Zirconia: The undisputed champion for high-stress areas requiring maximum durability, such as posterior crowns and bridges.
- Lithium Disilicate: Ideal for anterior restorations where aesthetics reign supreme, offering a natural, translucent appearance.