How To Handle Ill-Fitting Zirconia Crowns - XDENT LAB

Zirconia crowns have become a popular choice in dental restorations due to their durability and versatility. However, achieving a perfect fit can be a challenge. Here’s a guide on identifying and addressing the causes of ill-fitting Zirconia crowns, along with solutions to ensure optimal results.

Causes of Ill-Fitting Zirconia Crowns

• Rushed Production: Hastily made crowns can lead to inaccuracies in design and contouring, causing poor fit.

• Inadequate Margins: Poorly defined margins allow saliva and bacteria to infiltrate, leading to decay and periodontal issues.

• Improper Filling Process: Loose fillings can result in gaps, allowing entry of debris and bacteria.

• Inaccurate Impressions: Errors in impression-taking can lead to incorrect data for crown fabrication.

• Preparation Errors: Mistakes during tooth preparation can prevent the crown from fitting properly.

Fixing Ill-Fitting Zirconia Crowns

• Adjust Cementing Process: Before cementing, check the fit of the crown in the patient’s mouth. Clean the teeth with pumice stone to enhance adhesion.

• Clean Intaglio Surface: Thoroughly clean the inner surface of the crown to improve bonding. Proper cleaning ensures better adhesion of the cement.

• Change Adhesive Technique: Apply adhesive, place the crown, and remove excess cement carefully to ensure a snug fit.

Removing Phosphate Groups

Removing phosphate groups can prevent ill-fitting issues:

• Sandblasting: Use gentle sandblasting at low pressure to prepare the tooth surface.

• Sodium Hypochlorite: Clean the crown’s intaglio with gauze soaked in a 5% sodium hypochlorite solution, rinse with water, and let it dry.

• Ivoclean: Apply Ivoclean to the intaglio surface for 20 seconds, rinse, and let it dry naturally.

Addressing Facial-Lingual Problems

Facial-lingual fitting issues may arise due to digital imaging inaccuracies. To resolve this:

- Adjust Computer Settings: Use software to set appropriate margins and specify space between the fit surface and the prep site. This mimics the function of a die-spacer, preventing the crown from rocking facial-lingually.

Finding a Quality Outsourcing Dental Laboratory

For high-quality Zirconia crowns, consider partnering with a reliable dental lab. In Vietnam, XDENT LAB is a subsidiary of Nha Viet dental group, offers competitive prices and high-quality Zirconia crowns. With proper impressions, you can avoid receiving ill-fitting crowns.

By understanding these causes and solutions, dentists can ensure better fitting Zirconia crowns, leading to improved patient outcomes and satisfaction.

About XDENT LAB:

We are experts in Lab-to-Lab Full Service from Vietnam, with the signature services of Removable, meet U.S. market standards - approved FDA & ISO. Founded in 2017, from local root to global reach, we scale with 2 Factories with over 100+ employees.

Our 5 Commitments Built on “Trusted. Commitment. Quality”

1. Commit to 100% FDA-Approved Materials
2. Commit to Large-Scale Manufacturing, high volume, remake rate < 1%.
3. Commit to 2~3 days in lab (*digital file)
4. Commit to Cost Savings 30% 
5. Commit to Best Price

XDENT LAB | A Trusted Lab-to-Lab Service from Vietnam

• Factory 1 : 95/6 Tran Van Kieu Street, Binh Phu Ward, Ho Chi Minh City, Vietnam
• Factory 2: Kizuna 3 Industrial Park, Tay Ninh Province, Vietnam