D6608 Dental Code: Crown – Porcelain/Ceramic Substrate

Dental procedures are standardized using Current Dental Terminology (CDT) codes, ensuring clarity in billing and treatment documentation. One such code, D6608, refers to a porcelain/ceramic crown for a tooth with a ceramic substrate. This type of crown is highly aesthetic, making it a preferred choice for front teeth and visible areas.

Unlike porcelain-fused-to-metal (PFM) crowns, which have a metal base, D6608 crowns are entirely ceramic, offering superior translucency and a natural appearance. This article explores everything about the D6608 dental  code—materials, procedure, costs, comparisons, and patient considerations—to help dentists and patients make informed decisions.

2. Understanding Dental Crowns and Their Importance

Dental crowns are tooth-shaped caps placed over damaged or weakened teeth to restore function, shape, and aesthetics. They are used in cases of:

• Severe decay

• Cracked or fractured teeth

• Post-root canal treatment

• Cosmetic enhancements

Crowns can be made from different materials, including:

• Metal (gold, alloys) – Durable but less aesthetic

• Porcelain-Fused-to-Metal (PFM) (D2740) – Strong but may show a metal line

• All-Ceramic (D6608) – Best for natural appearance

• Zirconia (D2752) – Strong and aesthetic

3. What Does the D6608 Code Specifically Cover?

The D6608 code applies to a full ceramic crown that uses a high-strength ceramic core (such as lithium disilicate or alumina) covered with aesthetic porcelain.

Key Features of D6608 Crowns:

✔ Material: Pure ceramic (no metal)
✔ Best for: Anterior (front) teeth due to lifelike appearance
✔ Strength: Moderate (not as strong as zirconia but better than traditional porcelain)
✔ Biocompatibility: Hypoallergenic (no metal allergies)

Comparison Table: D6608 vs. Other Crown Types

4. Porcelain/Ceramic Crowns: Materials and Benefits

Materials Used in D6608 Crowns:

• Lithium Disilicate (e.g., IPS e.max) – High strength, excellent aesthetics

• Leucite-Reinforced (e.g., Empress) – Good for less demanding areas

• Alumina-Based Ceramics – Strong but less translucent

Advantages:

✅ Natural Appearance – Mimics light reflection like real teeth
✅ Biocompatible – No metal, reducing gum irritation
✅ Less Tooth Reduction Needed – Preserves more natural tooth structure

Disadvantages:

❌ Less durable than zirconia – More prone to fractures under heavy biting forces
❌ Higher cost than PFM – Insurance may cover only partially

5. Step-by-Step Procedure for Placing a D6608 Crown

1. Initial Consultation & Diagnosis – X-rays and impressions are taken.

2. Tooth Preparation – The tooth is reshaped to fit the crown.

3. Digital Scanning or Impression – A mold is sent to the lab.

4. Temporary Crown Placement – Protects the tooth while the permanent crown is made.

5. Crown Fabrication (Lab Process) – Ceramic is layered for strength and aesthetics.

6. Final Fitting & Cementation – The crown is bonded securely.

6. Cost and Insurance Coverage for D6608

• Average Cost: $1,000–$1,500 per crown

• Insurance Coverage: Many plans cover 50% (considered a major procedure).

• Alternatives: Some patients opt for D2740 (PFM) if cost is a concern.

7. Maintenance and Care for Porcelain Crowns

• Avoid chewing hard foods (ice, hard candy)

• Use non-abrasive toothpaste

• Regular dental check-ups

Conclusion

The D6608 dental code represents a high-quality, aesthetic ceramic crown ideal for front teeth restorations. While it offers superior aesthetics, it may not be as durable as zirconia for back teeth. Patients should consult their dentist to determine if a porcelain/ceramic crown is the best choice for their needs.

FAQs

1. How long does a D6608 crown last?

Typically 10–15 years, depending on oral hygiene and bite forces.

2. Does insurance cover D6608 crowns?

Most plans cover 50%, but check with your provider.

3. Can a porcelain crown chip?

Yes, though modern ceramics are stronger than older versions.

4. Is the procedure painful?

No, local anesthesia ensures a painless process.

Additional Resources

• American Dental Association (ADA) CDT Codes

• [Journal of Prosthetic Dentistry – Ceramic Crown Studies](https://www.journals Elsevier.com)