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Milling forming production method of dental all-ceramic restoration

A manufacturing method and restoration technology, applied in dentures and other directions, can solve the problems of reducing the long-term stability and reliability of restorations, too thin and cracked restorations, restoration failures of restorations, etc., so as to improve the smoothness of the outer surface and the uniform and coherent structure of the restoration. , The effect of improving the processing yield

Active Publication Date: 2015-03-25
HANGZHOU ERRAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the grinding process, cracking of the too thin part of the restoration may occur due to vibration, especially at the edge of the restoration; manual grinding will introduce local stress and microscopic defects on the outer surface of the restoration, reduce the long-term stability and reliability of the restoration, and even cause Premature fracture of the restoration, restoration failure

Method used

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  • Milling forming production method of dental all-ceramic restoration
  • Milling forming production method of dental all-ceramic restoration
  • Milling forming production method of dental all-ceramic restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] According to the case and the restoration plan: the posterior teeth are large-area dental defects, and the posterior teeth zirconia single crown all-ceramic restorations are made.

[0058] A method of milling and forming dental all-ceramic restorations, as attached image 3 As shown, including the following steps:

[0059] Step 1: Perform conventional tooth preparation according to the tooth preparation standards of zirconia all-ceramic restorations: occlusal surface grinding 1.5mm~2.0mm, axial surface grinding 1.0~1.5mm, neck shoulder width 0.5~0.8mm, Axial surface polymerization degree is 6~8℃, each point angle and line angle are round and smooth.

[0060] Step 2: Use the 3Shape intraoral scanner TROIS to directly scan the upper and lower dentition to obtain an optical model of the dentition.

[0061] Step 3: Take the optical model of the dentition obtained in step 2 as the data source, and use the dental restoration design software 3Shape dental CAD system DentalDesigner TM...

Embodiment 2

[0069] According to the case and the restoration plan: the posterior teeth were large-area dental defects, and the posterior teeth zirconia-alumina composite single-crown all-ceramic restorations were made.

[0070] Step 1: Perform conventional tooth preparation according to the tooth preparation standard of all-ceramic restorations: occlusal surface grinding 1.5mm~2.0mm, axial surface grinding 1.0~1.5mm, neck shoulder width 0.5~0.8mm, axial surface The degree of polymerization is 6~8℃, and the angles of each point and line are round and smooth.

[0071] Step 2: Make the upper and lower dentition impressions clinically, use the 3Shape desktop scanner D810 to directly scan the dentition impressions, and use the dental restoration design software 3Shape dental CAD system DentalDesigner TM Converted into an optical model of dentition.

[0072] Step 3: Take the optical model of the dentition obtained in step 2 as the data source, and use the dental restoration design software 3Shape de...

Embodiment 3

[0080] According to the case and the restoration plan: the posterior teeth were large-area dental defects, and the posterior teeth zirconia-alumina composite single-crown all-ceramic restorations were made.

[0081] A method of milling and forming dental all-ceramic restorations, as attached Figure 4 As shown, including the following steps:

[0082] Step 1: Perform conventional tooth preparation according to the tooth preparation standards of all-ceramic restorations: occlusal surface grinding 1.5mm~2.0mm, axial surface grinding 1.0~1.5mm, neck shoulder width 0.5~0.8mm, axial surface The degree of polymerization is 6~8℃, and the angles of each point and line are round and smooth.

[0083] Step 2: Make the upper and lower dentition impressions clinically, use the 3Shape desktop scanner D810 to directly scan the dentition impressions, and use the dental restoration design software 3Shape dental CAD system DentalDesigner TM Converted into an optical model of dentition.

[0084] Step 3...

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Abstract

The invention discloses a milling forming production method of a dental all-ceramic restoration. In production processes, a support column is not required for fixing a ceramic block and the restoration, so that the process steps of manually removing the support column by milling to separate the formed restoration and the surrounding ceramic block and burnishing and polishing the excessively rough outer surface of the restoration caused by removing the support column by milling are avoided, and the risks of disintegration of the restoration and premature fracture failure are further reduced. Under the condition of being supported by a model material block, the milling of the ceramic block is more conductive to processing a thin-walled neck edge, and particularly, the milling of a ceramic hard biscuit which is not sintered is more conductive to improving the degree of finish of the outer surface of the dental all-ceramic restoration. The dental all-ceramic restoration produced by adopting the technical scheme of the invention has the advantages of no connection points for the support column on the outer surface, no partial milling marks and ceramic cracks, bright and clean surface, uniform and consistent structure and high reliability.

Description

Technical field [0001] The invention relates to the technical field of manufacturing dental ceramic materials, in particular to a method of milling and forming a dental all-ceramic restoration. Background technique [0002] In the 1970s, French dentist Duret introduced computer-aided design and computer-aided manufacturing (CAD / CAM) technology into the dental field. The principle is: use the photoelectric principle to collect information on the three-dimensional shape of the tooth preparation with the photoelectric sensor to form an "optical impression"; then input the optical impression into a computer, and use software to perform three-dimensional reconstruction to obtain an "optical working model"; Design the prototype of the dental prosthesis on the optical working model, and form a "computer wax model" after careful modification; finally input the computer wax model as a control parameter into the CNC milling machining center, and process the pre-fixed prefabricated porcelai...

Claims

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Application Information

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IPC IPC(8): A61C13/083
Inventor 沈志坚赵静
Owner HANGZHOU ERRAN TECH
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