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A method for digitally and precisely fabricating dental restorations

A prosthesis, dental technology, applied in the direction of dental prosthesis, dentistry, medical science, etc., can solve the problems of inability to achieve a complete digital process, high technical sensitivity, difficult to control accuracy and reliability, etc., to improve the medical experience and improve the accuracy and reliability, the effect of reducing chair time

Active Publication Date: 2021-07-02
HANGZHOU ERRAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because the current commonly used dental prosthesis production technology cannot realize a complete digital process, and still needs manual shaping operations to complete, the technical sensitivity is high, and the accuracy and reliability are not easy to control

Method used

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  • A method for digitally and precisely fabricating dental restorations
  • A method for digitally and precisely fabricating dental restorations
  • A method for digitally and precisely fabricating dental restorations

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] 1. Preparation of crown plate:

[0037] In order to confirm the correct shape, color, occlusal and adjoining relationship of the denture and the shape required for the early healing of the gingiva through the crown, to achieve temporary restoration-protection, maintenance and stability; resins with appropriate strength, toughness and hardness must be used , wax and other materials, and these materials must be non-porous and dense materials.

[0038] 1.1 Preparation of polymethyl methacrylate (PMMA) resin disc

[0039] Polymethylmethacrylate (PMMA) resin discs (diameter 98mmx15mm, 98mmx20mm, 98mmx25mm, 98mmx30mm, etc.) were prepared by injection molding. Injection molding using suspension polymerization The pellets of the obtained PMMA are molded on a common plunger or screw injection molding machine. The following are PMMA injection molded Typical process condition. Table 2 is the screw injection molding machine and plunger injection molding machine Process par...

Embodiment 1

[0047] Example 1. Glazed zirconium dentures, 4-unit bridge of posterior teeth, intraoral scanning, remote design of digital models, chairside fabrication of resin occlusal models, remote fabrication of glazed zirconium restorations;

[0048] Step 1: Accurate acquisition of digital data: On the hospital side, the hospital technician uses a mouth scanner to scan the patient's upper and lower dentition, missing posterior teeth, gums and occlusal relationship to obtain data, and through the colorimeter, standard colorimetric Board and computer intelligent color comparison to obtain the matching color of the patient's teeth and take pictures to obtain pictures of the teeth;

[0049] Step 2: Accurate digital design of the 4-unit bridge of the posterior teeth: input the digital file of the missing anterior teeth obtained in step 1 into the digital CAD design software for dental restorations, and the designer accurately designs the digital crown of the dental restoration of the 5-unit ...

Embodiment 2

[0055] Example 2. Glass-ceramic dentures, single crowns on anterior teeth, intraoral scanning, digital chairside design, resin occlusion chairside fabrication, and restoration chairside fabrication;

[0056]Step 1: Accurate acquisition of digital data: On the hospital side, hospital technicians use a mouth scanner to scan the patient's upper and lower dentition, missing front teeth, gums and occlusal relationship to obtain data, and use a colorimeter, standard colorimeter Board and computer intelligent color comparison to obtain the matching color of the patient's teeth and take pictures to obtain pictures of the teeth;

[0057] Step 2: Accurate digital design of the anterior single crown: input the digital file of the missing anterior tooth obtained in step 1 into the digital CAD design software for dental restorations, and the designer accurately designs the digital crown of the anterior single crown dental restoration; design Documentation includes crown morphology, margina...

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Abstract

The invention discloses a method for digitally and accurately manufacturing dental restorations. At the clinical end, resins with suitable strength, color, toughness, and hardness, resin-based ceramic composite materials, high-strength wax, and other materials that are easy to mill and grind are used to quickly manufacture crown substitutes. ;Using each patient's own gums as the articulator, through the communication and inspection between the clinician and the patient, and using the clinically fine-tuned digitally produced crown as the medium, to establish the correct geometry, color, edge tightness, adjacency and occlusion of the restoration relationship and the shape required for the early healing of the gingiva, etc., to achieve temporary restoration--protection, maintenance and stability; the doctor will then conduct a second accurate scan of the crown that has adjusted the shape, occlusion and adjacency relationship, The second scan data is fused with the previously designed digital wax-up data to obtain an accurate digital design of the dental restoration, accurately replicating a bionic zirconia denture, and achieving zero grinding and precise restoration at the doctor's end.

Description

technical field [0001] The invention relates to the field of making dental restorations, in particular to a method for digitally and precisely manufacturing dental restorations. Background technique [0002] Dental prosthesis is a prosthesis made of artificial materials that conforms to physiological functions. It must be highly matched with the remaining teeth of the patient's mouth and highly coordinated with the muscles and joints to restore normal oral functions, especially masticatory functions. Dental technicians usually make restorations based on a plaster model of the patient’s dentition, which can only reflect the relationship between the upper and lower dentition in the static centric jaw position. When the dental restoration made based on this model is put into the patient’s mouth, the doctor needs The patient performs simulated chewing such as protruding forward and laterally, and adjusts the grinding, so that the dental restoration can adapt to the physiological...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/00A61C13/34
CPCA61C13/0004A61C13/34
Inventor 沈志坚李廷凯陶力焦芬芬赵静
Owner HANGZHOU ERRAN TECH
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