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Dental color composite resin high-strength fiber temporary restoration and its preparation method

A composite resin and high-strength fiber technology, used in dental prostheses, dental preparations, dentistry, etc., can solve the problems of insufficient bending elastic modulus and mechanical properties, poor aesthetic effects, etc., and achieve improved aesthetics and good biological safety. And the effect of improving aesthetic performance and overall mechanical performance

Inactive Publication Date: 2019-09-20
NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the lack of mechanical properties such as bending strength, bending elastic modulus and toughness of existing resin temporary restoration materials, and the current situation of poor aesthetic effect, the purpose of the present invention is to provide a dental colored composite resin high-strength fiber temporary restoration, which improves The overall mechanical strength of the temporary restoration meets the clinical aesthetic performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of grooved colored high-strength fiber resin composite material

[0030] Raw materials: 2,5-dihydroxyterephthalic acid (MeTHPA, analytically pure); tetraaminopyridine trihydrochloride monohydrate (MeTHPA, analytically pure); polyphosphoric acid (MeTHPA, analytically pure); Phosphorus (MeTHPA, analytically pure); terephthalic acid; 4,6-diaminoresorcinol hydrochloride; silane coupling agent (Z-6040, Dow Corning, USA); bisphenol A epoxy resin (E -51, epoxy value 0.48~0.54eq / 1009); methyltetrahydrophthalic anhydride (MeTHPA, analytically pure); 2,4,6-tris(dimethylaminomethyl)phenol (DMP-30, chemically pure) ; Titanate coupling agent (Sigma, USA); ether diluent; nano TiO 2 (particle diameter 25nm, American Sigma Company).

[0031] (1) Preparation of PIPD / PBO blended fiber

[0032] A. Preparation of PIPD / PPA polymer solution

[0033]Put 2,5-dihydroxyterephthalic acid, tetraaminopyridine trihydrochloride monohydrate, polyphosphoric acid and phosphoru...

Embodiment 2

[0058] Example 2: Flexural performance test of five different temporary restorations

[0059] Materials: Protemp 4 (3M ESPE, St.Paul, Minn, USA), Structur 2SC / QM (VOCO, Cuxhaven, Germany), Teilo CAD (IvoclarVivadent, Liechtenstein), VITA CAD-Temp (VITA, Germany), self-made temporary restoration Materials, high-speed cutting machine (Buehler Isomet 4000, Germany), universal material tester (EasyTest tm EZ20, Segenworthfareham, UK)

[0060] (1) Test piece preparation

[0061] According to the operation method of the material manual, make resin blocks of Protemp 4 and Structur 2SC / QM materials, and use an automatic delivery gun to slowly inject Protemp 4 and Structur 2SC / QM materials into a silicone rubber mold of 25mm×2mm×50mm, and inject slowly Temporary material to prevent the generation of air bubbles. The material was cured in the mold at room temperature for 15 minutes, and demolded. Then store the specimen in a water bath at (37±1)°C, and take it out after the tempora...

Embodiment 3

[0072] Example 3: CAD / CAM Self-made Temporary Restoration Repairing Defective Teeth in Vitro

[0073] Materials: isolated mandibular molars (residual shoulder collar = 2mm), emery bur, inEos Blue raster scanner (Sirona, Germany), CEREC MC XL grinder, glass ionomer cement (Satsukaze HY-BOND)

[0074] (1) Tooth preparation of isolated teeth: use diamond burs for tooth preparation, so that the final abutment tooth convergence angle is 6°, and a 90° shoulder with a shoulder width of 1.0 mm is used.

[0075] (2) CAD / CAM temporary crown preparation: After the abutment model was evenly sprayed with powder, the model was optically taken using inEos Blue (Sirona, Germany) blue raster scanning technology. Clear and accurate optical impressions are guaranteed from every angle. After the optical film was taken, the Sirona inlab system was used to routinely determine the edge of the restoration and design the shape. Use the CEREC MC XL grinder to cut the self-made temporary restoration m...

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PUM

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Abstract

The invention relates to a dentistry color composite resin high-strength fiber temporary prosthesis. The temporary prosthesis takes surface-modified and microscopic form-processing poly-p-phenylene ben-zobisthiazole (PBO) reinforced fiber as a reinforcing phase, and takes nano-modified toughening resin as a matrix, the PBO reinforced fiber is mixed with the toughening resin to form a composite material to prepare the temporary prosthesis. The temporary prosthesis can improve the problems of insufficient mechanical properties such as bending strength, bending elasticity modulus and toughness of the current resin temporary prosthesis, high-performance PBO fiber and a three-dimensional braiding structure are introduced into a dentistry temporary prosthesis material, so that the integral mechanical strength of the temporary prosthesis is increased.

Description

technical field [0001] The invention relates to a temporary prosthetic body for dentistry, in particular to a temporary dental prosthetic body with colored composite resin high-strength fibers and a preparation method thereof. Background technique [0002] Temporary restorations play a very important role in the clinical practice of dental restoration. It can protect the pulp tissue, maintain the stability of the occlusal relationship, provide proper chewing function, and maintain the self-integration of the crown. It is a method for immediate restoration of missing teeth. In addition, temporary restorations can also improve aesthetics, assist periodontal and orthodontic treatment, and assist patients with occlusal disorder to reconstruct occlusal relationship, etc. At present, according to the different materials used in temporary restorations, temporary restorations can be divided into two categories: metal temporary restorations and non-metallic temporary restorations, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/087A61K6/027A61K6/891
CPCA61K6/831A61K6/891C08L63/00C08L79/04
Inventor 梁慧珉邵龙泉胡琛陈艾婕赖璇
Owner NANFANG HOSPITAL OF SOUTHERN MEDICAL UNIV
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