Call us on 09 379 9778 (Auckland) or 07 346 0516 (Rotorua)
Call us on 09 379 9778 (Auckland) or 07 346 0516 (Rotorua)
| Reduction | Finish Line Depth & Configuration | ||
| Anterior Crowns | All-Ceramic (veneered or monolithic) IPS e.max® or IPS Empress Esthetic® |
2.0 mm incisally 1.0 mm buccal/lingual |
0.8-1.0 mm shoulder |
| Porcelain-fused-to-zirconia | 2.0 mm incisally 0.6-1.0 mm lingual aspect (Porcelain guidance requires greater clearance) |
>0.4 mm chamfer lingually >1.0 mm labial |
|
| Metal-ceramic (Porcelain-fused-to-metal) |
2.0 mm incisally 0.5-1.0 mm lingual aspect (Porcelain guidance requires greater clearance) |
1.5 mm labial shoulder or heavy chamfer 0.5 mm lingual chamfer 1.5 mm circumferentially for 360-degree ceramic margin |
|
| Posterior Crowns | Full contour crowns (metal or zirconia) |
1.0 mm non-functional cusps 1.5 mm functional cusps |
0.3-0.5 mm shoulder or heavy chamfer |
| All-ceramic (veneered or monolithic) IPS e.max® or IPS Empress Esthetic® Porcelain-fused-to-zirconia |
2.0 mm non-functional cusps 2.5 mm functional cusps |
1.0 mm shoulder or heavy chamfer | |
| Metal-ceramic (Porcelain-fused-to-metal) |
If metal occlusal, as with FMC 2.0 mm non-functional cusps 2.5 mm functional cusps |
1.5 mm labial shoulder or chamfer 0.5mm lingual chamfer (metal collar) 1.5 mm circumferentially for 360-degree ceramic margin |
Refer to pages 82-83 of A Clinicians Guide to Prosthodontics
| Restoration | Preparation Area | Bur |
| Full metal crown | *Occlusal reduction & functional cusp bevel | Coarse grit round end tapered diamond |
| *Proximal axial reduction | Medium grit short needle diamond & coarse grit round end tapered diamond |
|
| *Buccal & lingual axial reduction | Coarse grit tapered torpedo diamond | |
| *Chamfer & axial finish line | Fine grit tapered torpedo diamond | |
| PFM Anterior | *Incisal & labial reduction | Coarse grit flat-end tapered diamond |
| *Lingual reduction | Coarse grit football-shaped diamond | |
| *Initial proximal reduction | Medium-grit long needle diamond | |
| *Lingual axial reduction | Coarse grit tapered torpedo diamond & finish with Fine grit tapered torpedo diamond | |
| PFM Posterior | *Occlusal reduction & functional cusp bevel | Coarse grit round end tapered diamond |
| *Buccal reduction (2 planes) | Coarse grit flat-end tapered diamond | |
| *Proximal axial reduction | Medium grit short needle diamond | |
| *Lingual & axial reduction | Coarse grit tapered torpedo & fine grit tapered torpedo diamond | |
| *Buccal, axial and shoulder finishing | Fine grit flat-end tapered diamond | |
| All-ceramic | *Incisal & labial reduction (2 planes) | Coarse grit flat-end tapered diamond |
| *Lingual & axial reduction | Coarse grit flat-end tapered diamond | |
| *Lingual reduction | Coarse grit football-shaped diamond | |
| *Axial wall & radial shoulder | Fine grit flat-end tapered diamond |
Refer to pages 82-83 of A Clinicians Guide to Prosthodontics
For over 30 years, we have been serving the dental industry. During that time, we have grown to be more than just a laboratory. We are drawing on our people, experience and years of innovation to deliver you exceptional results consistently, while committing to providing you the best value, products and service.
