Dental prosthesis

A technology of dentures and teeth, which is applied in the field of dentures, can solve problems such as low precision, and achieve the effects of low vibration, low disc height, and shortened milling time

Active Publication Date: 2020-01-24
IVOCLAR VIVADENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In addition, relatively long milling cutters have to be used in the known solution
With longer milling cutters, less precision is unavoidable due to the flexibility of the thin and thin milling tool especially at different advance speeds on the one hand and possibly to vibrations generated during the milling process on the other hand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] A blank 10 is shown, consisting of a tooth-colored material 12 and a flesh-colored material 14 . The blank was determined to be used in the manufacture of a mandibular denture.

[0056] The blank 10 is substantially disc-shaped. exist figure 1 The interface 16 between the tooth-colored material 12 and the flesh-colored material 14 can be seen in . The blank has specially shaped recesses 18 in the flesh-coloured material 14 . The material 12 extends from the upper side 20 of the blank 10 into the recess 18 .

[0057] The tooth-coloured material 14 of the blank 10 has a diameter or width greater than 5 cm, and in particular has a substantially flat cylindrical shape with a diameter / height ratio greater than 2:1, preferably greater than 3:1.

[0058] The flesh-colored and tooth-colored materials 14 and 12 are interconnected, for example, by bonding, by polymerization, and / or by integral fabrication.

[0059] Said recess has a substantially U-shaped shape with rather w...

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Abstract

A dental prosthesis is provided, manufactured from a one-piece or multi-piece prosthesis blank which is composed of a gum-colored material (14) and a tooth-colored material (14), especially each one being based on plastic material. The tooth-colored material (14) of the blank (10) has a diameter or a width of more than 5 cm and especially a substantially flat cylindrical shape with a diameter / height ratio of more than 2:1, preferably more than 3:1. The gum-colored and tooth-colored materials (14, 12) are bonded together by bonding, polymerization and / or integral production. The boundary (16) between the materials, as viewed in the direction of the dental arch course, is wave-shaped with alternating grooves and ribs (22, 24), and in the region of the anterior arch in the oral cavity to vestibular directions of radiant shape. The boundary (16) between the tooth-colored and the gum-colored material (12,14), as viewed from distal to mesial direction across the course of the dental arch, undulatingly rises towards the gum-colored material, with an average inclination of 20 degrees or more. The tooth-colored material (12) has a greater gingival occlusal height in the molar region (30) than in the anterior region (32).

Description

technical field [0001] The invention relates to a prosthesis according to the preamble of claim 1 . Background technique [0002] It has long been known to manufacture dentures from tooth-coloured material and flesh-coloured material and to mill the denture so that the dental arch is made of tooth-coloured material and the denture base is made of flesh-coloured material. [0003] Here, PMMA-based plastics are usually used for both materials. The two materials can be fixed to one another very well, for example by adhesive bonding or graft polymerization. [0004] It is also possible to manufacture the tooth-colored material in the form of a complete dental arch, ie so that the individual teeth are connected to each other at least by narrow webs, so that the dental arch is one piece. [0005] For the fastening of the dental arch to the denture base it is known to provide a U-shaped channel into which the dental arch is glued. [0006] Depending on the desired size of the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C13/08
CPCA61C13/08A61C13/0022A61C13/01A61C13/10A61C13/1003A61C8/0012A61C8/0089A61C13/0004A61C13/0006A61C13/26Y10T428/216
Inventor M·盖尔F·弗伦泽尔T·巴斯克R·弗莱
Owner IVOCLAR VIVADENT AG
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