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Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof

A manufacturing method and technology of dental posts, which are applied in the fields of implantology, dentistry, medical science, etc., can solve problems such as insufficient root bonding, high elastic modulus, and easy fracture, so as to improve the long-term retention rate and facilitate Retention and storage, improving the effect of inconsistent stress distribution

Active Publication Date: 2015-02-25
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing fiber resin post, although it has an elastic modulus similar to that of dentin and is not easy to damage the tooth root, it is not firmly bonded to the tooth root, is prone to fragmentation, and is not easy to form; and high flexural strength, but there is a disadvantage that the elastic modulus is much higher than that of dentin, and it is easy to damage the root

Method used

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  • Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof
  • Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof
  • Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0045] Such as picture 1 shows a personalized metal dental post simulating the mechanical properties of natural teeth. It consists of a post 1 and a core 2. The post 1 and the core 2 are integrally formed. The post 1 is composed of a dense part 12 and a loose part 11. The dense part 12 is wrapped in Inside the loose part 11; the loose part is composed of a material whose elastic modulus is lower than that of the dense part. For example, the dense part is composed of metal materials with high elastic modulus such as cobalt chromium alloy and titanium alloy, or non-metallic materials with high elastic modulus such as ceramics; the loose part is composed of gold alloy, silver amalgam and other low elastic materials. Modulus metallic materials, or non-metallic materials with lower elastic modulus such as fiber reinforced resins.

[0046] The advantage of this embodiment is:

[0047] 1. Set the loose part on the pile, adjust the elastic modulus of the loose part by selecting the ...

Embodiment 2

[0051] Such as picture 2 shows a personalized dental post, which is composed of a post 1 and a core 2. The post 1 and the core 2 are integrally formed. The post 1 is composed of a dense part 12 and a loose part 11. The porosity of the loose part 11 is the same as that of the loose part 11. The relationship between the modulus of elasticity is: ,in, is the modulus of elasticity of the loose part 11, C , k is a constant, is the modulus of elasticity of the dense part 12, is the porosity of the loose part.

[0052] The pores of the porous structure are distributed irregularly, as long as the porosity can make the equivalent elastic modulus of the loose part reach the preset elastic modulus.

[0053] The advantage of this embodiment is:

[0054] 1. Set the loose part on the pile, and adjust the porosity of the loose part to make the elastic modulus of the loose part lower than that of the dense part, thereby reducing the risk of damage to the dentin due to the high hard...

Embodiment 3

[0057] The difference between this embodiment and embodiment 2 is: as picture The pores of the porous structure shown in 3 are regularly distributed. Specifically: the porous structure is composed of multiple pore units, each pore unit is composed of a shell A and a pore B, and the pore B is in the shell A as picture 111A as shown in 4, or shell A in hole B as picture In 111B shown in 4, the pore units are evenly and regularly distributed, and the pore units are closely attached to each other. The porosity of the porous structure is adjusted to realize the individual adjustment of the equivalent elastic modulus of the dental post. The porous structure and the dense part use the same material make.

[0058] Such as picture As shown in 5 and 6, the so-called shell in the hole means that the hole unit 111B needs to cooperate with other hole units 111B to form an empty area, and the enclosed empty area is called hole B, which cooperates with other hole units Part becomes Shell...

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Abstract

A personalized metallic dental pile simulating mechanical properties of natural teeth comprises a pile and a core. The pile and core formed integrally; the metal dental pile comprises a compact part and a loose part; the loose part is located in the contact area of the dental pile and the residual root or residual tooth; and the elasticity modulus of the loose part is lower than that of the compact part. The manufacturing method of the metal dental pile comprises the following steps: conducting conventional repair design and tooth preparation; acquiring digital dental impression of a patient; designing a three dimensional model of the dental pile with according to the structure characteristics of the root canal and the residual tooth of the patient's; conducting adaptation of the pile and the root canal of the residual tooth, and finding out the contact area of the dental pile with the residual root or residual crown; setting the contact area as the loose part; setting the area outside of the contact part as the compact part; forming the dental pile; and trimming the dental pile to make the dental pile seal with the root canal of the patient's. The invention has the advantages of high adaptation, high flexural strength and no damage to the tooth root.

Description

technical field [0001] The invention relates to a metal tooth post and a manufacturing method thereof. technical background [0002] Traumatic fracture of teeth resulting in residual crowns and roots is a common disease in oral and maxillofacial trauma, especially for those who work in the field, due to the nature of their work, the probability of trauma is relatively high, and the incidence rate is high. Post-core restoration technique is a common restoration method for repairing large tooth defects. Large-area tooth defects refer to the loss of most of the hard tissue in the crown of the patient, and even involve the root of the tooth. Due to the small amount of remaining tooth tissue, a full crown cannot be used alone to achieve good retention. In order to increase the retention, a part of the prosthesis is inserted into the root canal for retention. This part of the prosthesis inserted into the root canal is called a post, which is fixed on the post and together with t...

Claims

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Application Information

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IPC IPC(8): A61C8/00
Inventor 彭伟尤左令游嘉董星涛
Owner ZHEJIANG UNIV OF TECH
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