Flush Margins with no click transition with RebelCrown and Ben Guilford - ep 0038

Summary

In this video, Ben discusses Rebel Crowns' advanced milling process and its impact on crown design, focusing on the precision of the 0.08mm margin line offset. This offset creates smoother transitions from the natural tooth to the crown, minimizing overhangs and improving overall fit. The use of Harvest Nano Zirconia ensures durability and accuracy, leading to a more efficient seating process for doctors, often completed in just 10-15 minutes. With polished zirconia and a seamless fit, Rebel Crowns provide exceptional comfort and longevity, eliminating the need for additional polishing or adjustments during the fitting process.

Takeaways

• 😀 Rebel crowns feature a smooth transition from the natural tooth to the crown margin, ensuring an optimal fit and appearance.
• 😀 The Supra gingival margin design allows for a seamless connection between the tooth and the crown, which doctors appreciate when using an explorer tool.
• 😀 Rebel uses a 0.08 mm margin line offset for their crowns, which is thinner and provides a better emergence profile compared to the 0.1 or 0.12 mm offsets used by other labs.
• 😀 The 0.08 mm margin line offset is a 30% reduction compared to the 0.12 mm option, offering a more intimate fit and reducing the need for additional polishing.
• 😀 Harvest nano zirconia is used for milling the crowns, contributing to the precision and durability of the final product.
• 😀 Rebel crowns are designed and milled without the need for further adjustments, reducing labor time and improving the overall workflow.
• 😀 The 0.12 mm margin line offset, typically used by other milling centers, often requires additional polishing and can lead to food and plaque traps if not managed correctly.
• 😀 Rebel crowns are model-free and utilize a precise milling strategy, ensuring a consistent and optimal fit without extra grinding or polishing.
• 😀 The crowns' precise milling and polished zirconia help avoid microfracturing and maintain accuracy throughout the process, resulting in better overall performance and longevity.
• 😀 Rebel crowns provide efficient, stress-free crown seating in just 10 to 15 minutes, improving both doctor and patient experience.

Q & A

What is the main advantage of the 0.08 mm margin line offset used in Rebel crowns?

The 0.08 mm margin line offset allows for a thinner offset, which improves the emergence profile, provides a better transition from the tooth to the crown, and results in a more intimate fit, as appreciated by clinicians when using their explorers.

Why do most labs and milling centers use a 0.12 mm margin line offset instead of 0.08 mm?

Most labs and milling centers use a 0.12 mm margin line offset for safety reasons. It ensures that the margin is easier to work with, but it requires additional polishing after milling, which can be more time-consuming and less precise.

How does Rebel's use of 0.08 mm margin line offset save time compared to 0.12 mm?

Using a 0.08 mm margin line offset eliminates the need for post-milling polishing, saving labor time. This also helps maintain optimal contours and ensures a better fit right from the milling stage.

What is the role of Harvest Nano Zirconia in achieving the 0.08 mm margin line offset?

Harvest Nano Zirconia is used in Rebel's milling process, enabling precise milling at a 0.08 mm margin line offset. This material's properties support consistent, high-quality results in the final crown fit and design.

How does a smaller margin line offset (0.08 mm) affect the crown's emergence profile and overall fit?

A smaller margin line offset improves the emergence profile, leading to a smoother and more seamless transition from the tooth to the crown. This reduces the chances of food and plaque build-up, improving both functionality and aesthetics.

What challenges arise when using a 0.12 mm margin line offset?

A 0.12 mm margin line offset can result in a bulkier crown contour, requiring additional work to blend the margins and contours. This may lead to overhangs that trap food and plaque, potentially causing oral hygiene issues and necessitating more labor-intensive adjustments.

Why is a polished zirconia crown beneficial for both the crown fit and the opposing teeth?

A polished zirconia crown is smoother and gentler on the opposing teeth, minimizing wear and ensuring a better fit. The polished surface also improves the crown’s ability to resist plaque and bacteria buildup.

How does Rebel’s milling and polishing process improve crown accuracy and fit?

Rebel’s process skips the glaze and focuses on light polishing, which preserves the geometric accuracy of the crown. This ensures that the final product matches the design exactly, providing a better fit and eliminating the need for additional adjustments.

How does the design-to-milling process at Rebel save time for clinicians?

Rebel’s design-to-milling process allows crowns to go straight from the design phase to the milling process without requiring extensive adjustments. The result is a crown that fits well immediately, reducing seat time during patient appointments.

What benefits does the use of a 0.08 mm margin line offset provide for the clinician during crown seating?

The 0.08 mm margin line offset ensures a smooth transition from the tooth to the crown, allowing for quicker and easier crown seating. It reduces the chance of misfit and minimizes the need for adjustments, making the procedure more efficient for the clinician.