1. NobelProcera™ on Natural Teeth
Location, date
Presenter name

2. Guidelines for tooth preparation
Preparation guidelines
Zirconia
Alumina
Titanium
Base Metal Alloy Cobalt Chromium
IPS e.max CAD ®
Please refer to the Preparation Guidelines provided by Nobel Biocare
IPS e.max® is a registered trademark of Ivoclar Vivadent AG
Disclaimer: Some products may not be regulatory cleared/released for sale in all markets. Please contact the local Nobel Biocare sales office for current product assortment and availability.

3. Guidelines for tooth preparation
Tooth preparation – general principles to follow  
Chamfer for Zirconia or Alumina and shoulder preparation for lithium disilicate
Round edges
Provide adequate space for the coping and the veneering material
Establish tapered axial walls
The ideal total occlusal convergence is 3-4 degrees
The tooth ideally is anatomically prepared, i.e. occlusal surfaces can be angled according to their original natural form. This allows the reconstruction of the original anatomy with a uniform ceramic thickness. 
6 – 8°
Adequate occlusal space
120 – 140°
Rounded edges  
Chamfer margin for Zirconia and Alumina   
Rounded shoulder margin for lithium disilicate ceramics

4. Guidelines for tooth preparation
Tooth preparation – general principles to avoid û
Avoid sharp edges , undercuts and grooves
Avoid sharp angles on the occlusal surface
Avoid deep fossa/cavity
Avoid preparations that are excessively tapered or too close to parallel û û û û
Incorrect chamfer margin û
A knife-edge preparation is not recommended as it can lead to the restoration´s breakage

5. Guidelines for tooth preparation
NobelProcera™ Crown preparation for Zirconia and Alumina mm
≥1.5 mm
≥1.0 mm
Anterior NobelProcera Crown
Eliminate sharp edges, undercuts and grooves
Minimal coping thickness*: 0.4 mm
*Consider adequate space for optimal veneering layer (0.7 – 1.2mm). Source: VITA Zahnfabrik AG; VITA VM*9 and VITA VM*7 working instructions, 09/11

6. Guidelines for tooth preparation
NobelProcera™ Crown preparation for Zirconia and Alumina
≥1.0 mm
≥1.5 mm mm
Posterior NobelProcera Crown
Eliminate sharp angles on occlusal surface and deep fossa/cavity
Minimal coping thickness*: Zirconia 0.7 mm / Alumina 0.6mm
*Consider adequate space for optimal veneering layer (0.7 – 1.2mm). Source: VITA Zahnfabrik AG; VITA VM*9 and VITA VM*7 working instructions, 09/11

7. Guidelines for tooth preparation
NobelProcera™ Bridge preparation for Zirconia and Alumina
≥3.0 mm
Anterior and posterior NobelProcera Bridge
Prepare the teeth to allow a bridge with a 3 mm connector height
Excessive divergence of preparation angles hinder the bridge’s path of insertion
Minimal bridge framework thickness*: 0.6mm
*Consider adequate space for optimal veneering layer (0.7 – 1.2mm). Source: VITA Zahnfabrik AG; VITA VM*9 and VITA VM*7 working instructions, 09/11

8. Guidelines for tooth preparation
Preparation for full-contour crown IPS e.max® CAD by NobelProcera
≥1.5 mm
≥1.2 mm
≥1.0 mm
≥1.5 mm
≥1.0 mm
Anterior and posterior NobelProcera Crown
Prepare a shoulder with rounded inner edges or a deep chamfer
Width of the shoulder/chamfer margin at least 1.0mm
IPS e.max® is a registered trademark of Ivoclar Vivadent AG
Disclaimer: Some products may not be regulatory cleared/released for sale in all markets. Please contact the local Nobel Biocare sales office for current product assortment and availability.