D6790 Dental Code: Crown Repair – Necessity, Procedure, and Cost

Dental crowns are a crucial restorative solution for damaged or weakened teeth, providing structural support and aesthetic improvement. However, even the most durable crowns can sustain damage over time due to wear, trauma, or poor oral hygiene. When this happens, the D6790 dental code comes into play—a procedural code used by dentists to bill for the repair of a prosthetic crown.

This comprehensive guide explores everything you need to know about the D6790 dental code, including when it’s necessary, the repair process, costs, insurance considerations, and how to prolong the lifespan of your dental crown. Whether you’re a patient seeking clarity or a dental professional looking for detailed insights, this article provides in-depth, exclusive information not found on other websites.

2. Understanding the D6790 Dental Code

The D6790 dental code is classified under the Current Dental Terminology (CDT) as:

“D6790 – Repair of prosthetic crown”

This code applies when a dentist repairs an existing crown (porcelain, metal, or composite) without completely replacing it. The repair may involve:

• Reattaching a loose crown

• Fixing minor chips or cracks

• Replacing damaged porcelain or composite veneering

• Adjusting the crown’s fit

Key Features of D6790:

• Not a Replacement: D6790 is strictly for repairs; if a crown needs replacement, other codes (like D2740 for porcelain crowns) apply.

• Material-Specific Repairs: The technique varies based on the crown material (e.g., porcelain-fused-to-metal vs. all-ceramic).

• Insurance Implications: Some insurers cover D6790, while others may consider it part of the crown’s warranty.

3. When Is a Crown Repair (D6790) Needed?

A crown repair becomes necessary in several scenarios:

Common Reasons for Crown Repairs

Signs You Need a Crown Repair

• Pain or sensitivity around the crowned tooth

• Visible cracks or rough edges

• A wobbly or detached crown

• Difficulty chewing due to crown misalignment

4. Types of Crown Repairs Covered Under D6790

The D6790 code encompasses different repair techniques:

A. Re-cementation of a Loose Crown

• If the crown is intact but loose, the dentist cleans off old cement and reattaches it.

B. Porcelain or Composite Buildup

• Small chips in porcelain or composite crowns can be patched with bonding material.

C. Crown Margin Repair

• If the crown’s edge (margin) is damaged, the dentist may smooth or rebuild it.

D. Occlusal Adjustment

• If the crown causes bite misalignment, the dentist reshapes it for better fit.

5. Step-by-Step Procedure for Crown Repair (D6790)

The exact process depends on the type of repair needed:

Step 1: Examination & Diagnosis

• The dentist examines the crown using X-rays and visual inspection.

Step 2: Cleaning & Preparation

• For re-cementation, old adhesive is removed, and the tooth is cleaned.

Step 3: Repair Execution

• For chips: Composite resin is applied and shaped.

• For loose crowns: New dental cement is used.

Step 4: Polishing & Final Adjustments

• The repaired crown is polished for a natural look and bite-tested.

6. Materials Used in Crown Repairs

7. Cost and Insurance Coverage for D6790

• Average Cost: $100–$400 per repair (varies by material and dentist).

• Insurance Coverage: Some plans cover partial costs if the repair is medically necessary.

8. Alternatives to Crown Repair

If a crown is severely damaged, alternatives include:

• Full crown replacement (D2740)

• Dental onlays (D2650-D2664)

• Tooth extraction (if non-restorable)

9. How to Maintain Dental Crowns and Avoid Repairs

• Avoid chewing hard foods (ice, nuts).

• Wear a nightguard if you grind teeth.

• Maintain good oral hygiene.

10. Common Myths About Crown Repairs

❌ “Crown repairs are always covered under warranty.”
✅ Fact: Warranties often exclude damage from poor care.

❌ “A repaired crown is as strong as a new one.”
✅ Fact: Repairs may weaken the structure over time.

11. FAQs About D6790 Dental Code

Q: Does D6790 cover zirconia crown repairs?
A: Yes, if the repair is minor (e.g., re-cementation).

Q: How long does a crown repair last?
A: 2–5 years, depending on care.

Q: Can I repair a crown at home?
A: No—DIY fixes can cause further damage.

12. Conclusion

The D6790 dental code is essential for restoring damaged crowns without full replacement. Understanding when and how crown repairs are performed helps patients make informed decisions. Regular dental visits and proper care can extend a crown’s lifespan, minimizing the need for repairs.

13. Additional Resources

• American Dental Association (ADA) CDT Codes

• [Journal of Prosthetic Dentistry – Crown Longevity Studies](https://www.journals