Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof

A 3D printing and production method technology, applied in 3D printing, dentistry, dental prosthesis, etc., can solve the problems of poor correlation, complex production process, lack of analysis and consideration of restorations, etc., to achieve good tooth fit and improve effective The effect of resistance and small deformation

Active Publication Date: 2018-12-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method lacks the concept of quantity throughout the process, and it is difficult to control the amount of tooth removal
Although the second method has a bur as a reference, the bur has a poor correlation with the incision depth in the process of tooth preparation, and only analyzes the existing teeth to obtain the amount of tooth preparation within a safe range. Analysis and considerations for future restorations
The production process is complicated, and because it is an opaque material, only the amount of tooth preparation at the incision can be grasped, lacking global control over tooth preparation

Method used

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  • Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof
  • Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof
  • Method for manufacturing three-dimensional analysis tooth-preparation guide plate based on 3D printing and usage method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 provides a kind of three-way analysis based on 3D printing to prepare the tooth guide plate design, this method comprises the following steps:

[0044] (1) Acquisition of digital models: By directly scanning the patient's mouth with an intraoral scanner, or scanning the patient's oral model / impression with a model scanner, a digital model of the oral condition is obtained, such as figure 1 Shown is the schematic diagram of the acquired digital model of the oral cavity.

[0045] (2) Virtually design the target restoration: after importing the obtained oral digital model, refer to the state of adjacent teeth, homonymous teeth, and opposing teeth in the current oral model to personalize the design of the teeth to be restored, and use the designed Target restorations and models are exported separately. Wherein, the target restoration refers to the restored tooth.

[0046] (3) Virtual assembly model and target restoration: import the designed target restoratio...

Embodiment 2

[0062] This embodiment provides a method for using a 3D printed tooth preparation guide plate in actual restoration. The 3D printed tooth preparation guide plate is produced by any of the methods in the foregoing embodiments. The use method specifically includes the following steps:

[0063] Step A. Place the prepared tooth preparation guide plate on the teeth in the patient's mouth.

[0064] Step B. Measure the gap between the tooth surface at the fixed depth hole position and the surface of the prepared tooth guide plate with a fixed depth bur. If the measured gap is greater than or equal to the minimum thickness of the future restoration material, no tooth removal treatment will be performed here; If the gap is smaller than the minimum thickness of the future restoration material, the tooth here will be removed, and the amount of tooth removal is the difference between the minimum thickness of the future restoration material and the measured gap.

[0065] C. According to th...

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Abstract

The invention discloses a method for manufacturing a three-dimensional analysis tooth-preparation guide plate based on 3D printing and a usage method thereof. The manufacturing method comprises the following steps: (1) acquiring a digital model; (2) performing virtual design of target prosthesis; (3) performing virtual assembly of the model and the target prosthesis; (4) performing virtual adjustment and modification on the integral model after the virtual assembly of the model and the target prosthesis, and obtaining the integral model after fine virtual adjusting; (5) materializing a tooth-preparation guide plate; and (6) performing 3D printing of the tooth-preparation guide plate. The method comprehensively considers the existing tooth shape and the shape of the future prosthesis, and realizes the whole-process quantity control to the tooth-preparation process from a lip-cheek direction, a tongue-palate direction and a HE direction, and is not influenced by subjective experience ofthe clinicians, tooth preparation can be minimally and accurately completed, the whole process can be digitally controlled and operated, the production process is simple, the deformation of the prepared teeth is very small, and the data validity and the efficiency of the dental restoration project are improved.

Description

technical field [0001] The present invention relates to a preparation guide for at least one tooth configured for the preparation of oral restorations, in particular to a method for making and using a three-way analysis tooth preparation guide plate based on 3D printing, and to tooth preparation for oral microscopic precision restoration quantity control method. Background technique [0002] The process of oral restoration requires tooth preparation (grinding the tooth into a predetermined shape) in most cases, and wearing a restoration on the ground tooth. There are mainly three kinds of tooth preparation techniques at present: 1. tooth preparation based on the doctor's subjective experience; 2. tooth preparation with the help of the fixed-depth groove on the emery bur; The existing tooth profile provides maximum tooth preparation data without irritating the pulp or excessively compromising the strength of the tooth. Future Restoration Profiles provide data on the minimum...

Claims

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Application Information

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IPC IPC(8): A61C13/00A61C5/20B33Y50/00
CPCA61C13/0004A61C13/0019A61C5/20B33Y50/00
Inventor 于海洋陈昕
Owner SICHUAN UNIV
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