PFM Crown Posterior
PFM Crown Posterior: The Gold Standard for Back Teeth Restorations
What is a PFM Crown Posterior?
A PFM Crown Posterior is a special tooth cap for back teeth. PFM means Porcelain-Fused-to-Metal. It has a metal inside and tooth-colored outside. This makes it strong and pretty at the same time.
These crowns work best on molars and premolars. They can take the big biting forces that happen when you chew food. Our lab makes them with high-quality materials to last many years.
Top Benefits for Your Dental Practice
- Strong metal base holds up to chewing
- Metal occlusal surface stops chips in heavy biters
- CoCr alloy meets ISO 22674 standards [^1]
- Precision margins under 50μm for tight seals
- Fast 5-day standard production time
For cases with night grinding habits, check our Metal Collar PFM Crown for added strength.
Technical Details You Can Trust
| Feature | Specification | Clinical Benefit |
|---|---|---|
| Metal Framework | CoCr Alloy (ISO 22674) | Biocompatible, high strength |
| Porcelain Layer | 1.0-1.2mm buccal face | Natural aesthetics with durability |
| Occlusal Design | Full metal (1.5mm) | Prevents chipping in high-force areas |
| Margin Types | Chamfer, shoulder, feather | Flexible for your prep style |
| Cementation | Compatible with all major cements | Works with your preferred protocol |
| Production Method | CAD/CAM + lost-wax casting | Precision fit with traditional strength |
Perfect For These Clinical Situations
- High bite force patients (bruxism cases)
- When vertical space is limited (<3mm)
- Cases needing metal occlusal surfaces
- Multiple-unit bridges with high stress
- Secondary caries prevention with metal margins
- Abutment tooth protection for weakened teeth
Need something for front teeth instead? Try our PFM Crown Premolar or Emax Crowns Front Teeth for better aesthetics.
Technical Production Process
- Digital scanning – Compatible with your 3Shape/TRIOS system
- Framework design – CAD modeling with stress-breaking features
- Precision casting – Using Bego MiniCast technology
- Oxide layer bonding – For strong ceramic-metal bond
- Porcelain layering – IPS InLine® system for natural look
- Occlusal adjustment – Dynamic virtual articulation
- Final QC check – X-ray inspection for invisible defects
Quality Assurance You Can See
Every PFM Crown Posterior passes our strict quality checks:
- Edge fit test under digital microscope (≤50μm)
- Shade matching verification in natural light
- Occlusal contact testing on articulated models
- Metal thickness validation (1.5mm minimum)
- Surface polish inspection (no rough spots)
What Makes Our PFM Crowns Better?
- Anti-fracture design with cusp-fossa relationship support
- Non-axial loading resistance for long-term stability
- Food impaction prevention with proper contact points
- Low thermal conductivity to protect pulp health
- Ferrule effect utilization for maximum strength
For implant-supported restorations, see our specialized PFM Implant Crown options.
Cementation and Delivery Tips
- Clean crown thoroughly before try-in
- Verify marginal fit with explorer
- Check contacts with floss (should snap, not shred)
- Confirm occlusion in all movements
- Use appropriate cement (resin-modified glass ionomer recommended)
Materials Science Behind PFM Posteriors
Our PFM posterior crowns use special casting alloys with these properties:
- Yield strength: 550MPa [^2]
- Vickers hardness: 330 HV10
- Thermal expansion coefficient: 14.0 × 10⁻⁶/K
- Corrosion resistance: Exceeds ISO requirements
- Feldspathic porcelain: Matched CTE for minimal stress
Comparison With Other Options
| Feature | PFM Posterior | Full Zirconia | Gold Crown |
|---|---|---|---|
| Strength | Very Good | Excellent | Excellent |
| Aesthetics | Good | Very Good | Fair |
| Wear on Opposing | Very Low | Moderate | Lowest |
| Cost Efficiency | Excellent | Good | Fair |
| Marginal Fit | Excellent (<50μm) | Very Good (<70μm) | Excellent (<40μm) |
Order Information
- Standard production: 5 working days
- Rush service available: 48-hour option
- Warranty: 18-month against defects [^3]
- Shade guide: VITA Classical and 3D Master
- Digital files: Send .STL or physical impressions
For multi-unit cases, check our PFM Bridge Posterior options.
Technical Support
Our team includes master dental technicians with specialized training in:
- Dynamic occlusion analysis
- Framework design optimization
- Porcelain layering techniques
- CAD/CAM milling protocols
- ISO 13485:2016 quality systems
Call us for technical consultations on complex cases!
Footnotes: [^1]: CoCr alloy meets ISO 22674:2016 dental casting standards for biocompatibility [^2]: Strength data from 2023 Journal of Prosthetic Dentistry clinical study [^3]: Quality assurance based on ADA specification No. 8 for dental restorations
