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Slurry for photo-curing 3D-printing dental implant as well as preparation method and application of slurry

A technology of dental implants and 3D printing, applied in the direction of prosthesis, medical science, additive processing, etc., can solve the problems of inability to realize product manufacturing, increase production cost, prolong manufacturing cycle, etc., and achieve guaranteed strength, high reliability, Rapidly produced effects

Inactive Publication Date: 2017-09-15
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The human body implants with relatively simple shapes can be prepared by traditional methods, but for those human body implants with very complex shapes, especially the preparation of dental implants, the early mold design and post-production required by traditional methods The machining process often leads to the extension of the manufacturing cycle and the increase of the production cost, and even the traditional method cannot realize the manufacture of the product due to the unconventional complex shape

Method used

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  • Slurry for photo-curing 3D-printing dental implant as well as preparation method and application of slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Preparation of silicon nitride ceramic powder: Weigh α-silicon nitride, β-silicon nitride, and additives according to the proportions, and stir them through a ball mill for 4 hours until they are evenly mixed and set aside;

[0025] Step 2: Weigh a certain amount of photosensitive resin, photoinitiator, and reactive diluent according to the ratio, and mix for 5 minutes by heating in a 60°C water bath + magnetic stirring to obtain a photosensitive resin system;

[0026] Step 3: Add silicon nitride ceramic powder, dispersant, and other additives into the above photosensitive resin system in two batches, and perform ball mill dispersion to obtain a ceramic slurry with a viscosity of 3500 mPa·s.

[0027] Step 4: Add the ceramic slurry into the trough of the light-curing 3D printer, adjust the exposure parameters: exposure time 20ms, scanning speed 2500mm / s, open the dental implant CAD model that has been sliced, and complete the dental implant under the control of th...

Embodiment 2

[0032] Step 1: Preparation of silicon nitride ceramic powder: Weigh α-silicon nitride, β-silicon nitride, and additives according to the proportions, and stir them through a ball mill for 3 hours until they are evenly mixed and set aside;

[0033] Step 2: Weigh a certain amount of photosensitive resin, photoinitiator, and reactive diluent according to the proportion, and mix them for 7 minutes by heating in a water bath at 60°C + magnetic stirring to obtain a photosensitive resin system;

[0034]Step 3: adding silicon nitride ceramic powder, dispersant, and other additives into the above photosensitive resin system in 3 batches, and performing ball mill dispersion to obtain a ceramic slurry with a viscosity of 2000 mPa·s.

[0035] Step 4: Add the ceramic slurry into the trough of the light-curing 3D printer, adjust the exposure parameters: exposure time 10ms, scanning speed 4000mm / s, open the dental implant CAD model that has been sliced, and complete the dental implant under t...

Embodiment 3

[0040] Step 1: Preparation of silicon nitride ceramic powder: Weigh α-silicon nitride, β-silicon nitride, and additives according to the proportions, and stir them through a ball mill for 5 hours until they are evenly mixed and set aside;

[0041] Step 2: Weigh a certain amount of photosensitive resin, photoinitiator, and reactive diluent according to the ratio, and mix them for 8 minutes by heating in a water bath at 55°C + magnetic stirring to obtain a photosensitive resin system;

[0042] Step 3: Add silicon nitride ceramic powder, dispersant, and other additives into the above photosensitive resin system in 3 batches, and perform ball mill dispersion to obtain a ceramic slurry with a viscosity of 5000 mPa·s.

[0043] Step 4: Add the ceramic slurry into the trough of the light-curing 3D printer, adjust the exposure parameters: exposure time 30ms, scanning speed 1000mm / s, open the dental implant CAD model that has been sliced, and complete the dental implant under the control...

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Abstract

The invention discloses slurry for a photo-curing 3D-printing dental implant as well as a preparation method and application of the slurry. The slurry contains the following raw material components: silicon nitride ceramic powder, photosensitive resin, a photoinitiator, an active diluent, a dispersing agent and an aid, wherein the volume ratio of the photosensitive resin to the silicon nitride ceramic powder is (3 to 7)-(1 to 9), the adding proportion of the photoinitiator is 0.1wt%-1.5wt% of the photosensitive resin, the adding proportion of the active diluent is 15wt%-30wt% of the photosensitive resin, the adding proportion of the dispersing agent is 0.1wt%-1.5wt% of the silicon nitride ceramic powder, and the adding proportion of the aid is 0.1%-1% of total mass of the slurry. The dental implant prepared from the slurry has good biocompatibility, and besides, the strength, breaking tenacity and wear resistance of the dental implant are greatly improved.

Description

technical field [0001] The invention relates to the composition, manufacture and application of medical silicon nitride, in particular to a slurry for photocuring 3D printing dental implants and its preparation method and application. Background technique [0002] With the development of human society, the proportion of population aging is increasing, and there are more and more accidental injuries caused by activities such as wars, traffic accidents, sports competitions, etc. , artificial femoral head, cervical implant, intervertebral fusion device, interventional bracket, pacemaker, artificial ossicle, lumbar fracture plate, screw fixation, dental implant, etc.) demand increases. According to statistics, about 800,000 people around the world have undergone artificial joint surgery every year; the dental implant industry is also growing at a rate of 20% per year in the global market. It can be seen that the implants in the human body have a wide range of application prospe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/50A61L27/10A61L27/16A61L27/18B33Y70/00
Inventor 李伶王营营王再义李勇陈学江周欣
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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