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.
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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.
XDENT LAB is an expert in Lab-to-Lab Full Service from Vietnam, with the signature services of Removable & Implant, meeting U.S. market standards – approved by FDA & ISO. Founded in 2017, XDENT LAB has grown from local root to global reach, scaling with 2 factories and over 100 employees.. Our state-of-the-art technology, certified technicians, and commitment to compliance make us the trusted choice for dental practices looking to ensure quality and consistency in their products.
Our commitments are:
100% FDA-Approved Materials.
Large-Scale Manufacturing, high volume, remake rate < 1%.
2~3 days in lab (*digital file).
Your cost savings 30%.
Uninterrupted Manufacturing 365 days a year.
Contact us today to establish a strategy to reduce operating costs.
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Vietnam Dental Laboratory - XDENT LAB
🏢 Factory 1: 95/6 Tran Van Kieu Street, Binh Phu Ward, Ho Chi Minh City, Vietnam
🏢 Factory 2: Kizuna 3 Industrial Park, Can Giuoc Commune, Tay Ninh Province, Vietnam
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