Dental disc blank retention ring

The elastically supported dental disc blank retaining ring addresses the inefficiency and fracture risk in milling by absorbing vibrations and applying preload, enabling closer milling and precise positioning for improved material utilization.

JP7766470B2Active Publication Date: 2025-11-10IVOCLAR VIVADENT AG
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Patent Information

Application Number
JP2021179464
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-11-06
Filing Date
2021-11-02
Publication Date
2025-11-10
Estimated Expiration
2041-11-02

AI Technical Summary

Technical Problem

Existing dental disc blanks require a wide non-millable edge to maintain stability during milling, leading to inefficient use of expensive materials and increased risk of fracture due to milling vibrations.

Method used

An elastically supported dental disc blank retaining ring with a flexible component that absorbs milling vibrations and applies preload, allowing milling closer to the edge while reducing the risk of fracture.

Benefits of technology

The solution enables more efficient use of materials by minimizing the non-millable edge, reducing fracture risk, and ensuring precise positioning for optimal utilization of ceramic material.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a dental disc blank retention ring that enables more efficient utilization of dental prosthesis raw material available without increasing a rupture risk of a dental disc blank to be milled, and a dental disc blank and a dental disc blank retention ring.SOLUTION: A dental disc blank retention ring has a fixation projection part 22 for specifically forming a cutting-down, the retention ring 10 being formed by at least two components 26, 28. Softer one of the components is covered with harder one of the components.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Workpiece holder for dental blanks, consisting of two radially slotted rings provided with support projections.

    DE202017006526U1

  • Retaining device for dental blanks

    US20170065381A1