Room-temperature addition silicon rubber putty-type dental impression material applied to primary impression

An oral impression material, silicone rubber technology, applied in the field of medical materials, can solve the problems of poor dimensional stability, poor hydrophilicity, easy shrinkage, etc., and achieve the effects of good elastic recovery, high accuracy, and reduced volume shrinkage rate

Active Publication Date: 2014-03-26
JIANGXI LYUTAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of oral cavity impression material with silicone rubber putty added at room temperature for the initial impression to overcome the disadvantages of poor hydrophilicity, easy shrinkage and poor dimensional stability of the impression material. This material has good elasticity , toughness and strength, high plasticity, small volume shrinkage, high replication accuracy, good chemical stability, good hydrophilicity, simple operation and easy demoulding, etc.

Method used

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  • Room-temperature addition silicon rubber putty-type dental impression material applied to primary impression
  • Room-temperature addition silicon rubber putty-type dental impression material applied to primary impression
  • Room-temperature addition silicon rubber putty-type dental impression material applied to primary impression

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The formula of the room temperature added silicone rubber putty type oral cavity impression material of the present embodiment is shown in the following table:

[0041]

[0042] The vinyl silicone oil described in this example has a viscosity of 10,000 mPa·s and the vinyl silicone oil is a vinyl silicone oil with a double bond terminated or a double bond branched chain. Its structural formula is as shown in I or II. The container is 5000 mesh quartz powder, and the reinforcing agent has a specific surface area of ​​10 m 2 / g of fumed silica, the release agent is white oil, and the inhibitor is tetramethyldivinyldisiloxane.

Embodiment 2

[0044] The formula of the room temperature added silicone rubber putty type oral cavity impression material of the present embodiment is shown in the following table:

[0045]

[0046] The vinyl silicone oil described in this example has a viscosity of 60000 mPa·s, and the vinyl silicone oil is a vinyl silicone oil with a double bond terminated or a double bond branched chain, and its structural formula is as shown in I or II. The compatibilizer is 5000 mesh quartz powder, and the reinforcing agent has a specific surface area of ​​10 m 2 / g of fumed silica, the release agent is white oil, and the inhibitor is tetramethyldivinyldisiloxane.

Embodiment 3

[0048] The formula of the room temperature added silicone rubber putty type oral cavity impression material of the present embodiment is shown in the following table:

[0049]

[0050] The compatibilizer described in this embodiment is 5000 mesh quartz powder, and the described reinforcing agent has a specific surface area of ​​10 m 2 / g of fumed silica, the release agent is white oil, and the inhibitor is tetramethyldivinyldisiloxane.

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Abstract

The invention discloses a room-temperature addition silicon rubber putty-type dental impression material applied to primary impression. The room-temperature addition silicon rubber putty-type dental impression material is composed of a substrate component and a catalytic component in a blending manner, wherein the substrate component is composed of vinyl silicone oil, hydrogen silicone oil, a bulking agent, an enhancer and other assistants according to a certain ratio; the vinyl silicone oil contains more than two vinyl functional groups; the hydrogen silicone oil contains more than three Si-H functional groups; the catalytic component is composed of vinyl silicone oil, a catalyst, a bulking agent, an enhancer and other assistants according to a certain ratio; and the catalyst is a complex of chloroplatinic acid and vinyl silicone oil. The room-temperature addition silicon rubber putty-type dental impression material is rational in formula, and easy to operate, the elastic recovery of the cured material can be up to 99.8%, the curing time is 3-5 minutes, the shore hardness is about 65, and the dental impression material is finely copied into 0.02mm and clearly visible, and can be applied to fabrication of accurate dental crowns, and delivery of dental bridges, false teeth, articulation registration and oral cavity tissue.

Description

technical field [0001] The invention belongs to the field of medical materials and relates to oral impression materials. Background technique [0002] Impression materials are the materials used to prepare oral veneas in oral clinical treatment and restoration. At present, alginate-based impression materials, agar-based impression materials, and polysulfide rubber impression materials are commonly used in clinical practice in my country. However, pure alginate impression materials cannot meet the performance requirements of impression materials, and relevant auxiliary materials must be added. The gel of agar-based impression materials is very brittle and difficult to resist the stress when the impression is taken out. Polysulfide rubber impression The disadvantage of the mold material is that the texture is soft, the permanent deformation is relatively large, and the hardening is slow. If the time is insufficient, the impression is easily deformed. The addition-type silicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/10A61K6/90
Inventor 刘晓云陈义旺秦俊远
Owner JIANGXI LYUTAI TECH
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