WO2014066963A1 - Modified nylon mesh for structural reinforcement of dental prostheses and method for producing same - Google Patents
Modified nylon mesh for structural reinforcement of dental prostheses and method for producing same Download PDFInfo
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- WO2014066963A1 WO2014066963A1 PCT/BR2013/000423 BR2013000423W WO2014066963A1 WO 2014066963 A1 WO2014066963 A1 WO 2014066963A1 BR 2013000423 W BR2013000423 W BR 2013000423W WO 2014066963 A1 WO2014066963 A1 WO 2014066963A1
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- polyamide
- nylon mesh
- modified nylon
- mesh
- structural reinforcement
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
Definitions
- the present invention describes a nylon mesh, particularly modified polyamide, for structural reinforcement of dental prostheses and the process for obtaining them. More specifically it comprises a polyamide mesh with controlled percentage incorporation of silica to allow the chemical bonding of the acrylic resin to the polyamide mesh, potentially useful for application in prosthetic parts, orthopedic and orthodontic removable appliances and mouth guards.
- mucosal-supported total dentures are made of acrylic resin, a very versatile, cost-effective material with easy clinical and laboratory application, in addition to meeting minimum physical and biological requirements for use in dentistry.
- acrylic resin prostheses present fracture risks due to the final characteristics that prosthetic devices assume, and due to limitations that the clinical condition itself imposes, often resulting in decreased prosthetic longevity.
- Newell (Newell JA Fundamentals of Modern Engineering and Materials Science. Rio de Janeiro: LTC. 2010.) classifies carbon reinforcing fibers (aesthetically deficient), aramids (lacking adhesion), polyethylene (showing good adhesion), fibers. glass (application diversity), polyamide (adhesion difficulty when fibers are interlaced).
- nylon fibers have good strength and durability characteristics justified by the connections of hydrogen with polar amide groups present in their structure.
- a modified polyamide mesh for structural reinforcement of prophetic parts, orthopedic and orthodontic removable appliances and mouth guards, said polyamide fiber with controlled percentage incorporation of silica (Si0 2 ) to allow chemical bonding from acrylic resin to polyamide mesh, providing a one-piece polyamide mesh of desirable thickness, facilitating the penetration of the acrylic resin into the grid, increasing mechanical strength.
- silica Si0 2
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for filling the full denture body.
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for reinforcement of pharyngeal buccal extensions in buccal maxillary facial prosthesis.
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for the repair of removable full and partial dentures.
- the invention provides a modified polyamide mesh for structural reinforcement of protocol-type dental implant prostheses and temporary fixed prostheses made of acrylic resin.
- the invention provides a modified polyamide mesh for structural reinforcement of orthopedic and orthodontic removable appliances and mouth guards for sport use.
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that minimizes fracture occurrences and is an inert material when in contact with oral tissues.
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that allows easy handling by dental technicians, being resistant to chemical or thermal aggressions that technical maneuvers may cause to the material.
- the invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that includes the incorporation of silica into the polyamide, allowing the chemical bonding of the acrylic resin to W
- the invention provides a modified polyamide mesh for structural reinforcement of dental implants which allows the knitting producing polyamide in a single body, and desirable thickness, allowing the mesh to present a larger grid, facilitating the penetration of the acrylic resin between their spaces which greatly contributes to the increase in mechanical strength of acrylic resin.
- Figure 1 shows a schematic drawing of the polyamide mesh showing the openings formed between the fibers.
- Figures 2A and 2B show scanning electron microscopy images of the silica polyamide mesh.
- the modified polyamide mesh for structural reinforcement of dental prostheses, object of the present invention comprises a composition comprising polyamide fiber and silicon dioxide (SiO 2 ) in the ratio of 0.3% to 0.5% v / v of the composition. .
- the silicon dioxide incorporated in the polyamide mesh allows the chemical union of the acrylic resin to the polyamide mesh, increasing the strength of the resin / polyamide assembly.
- the process of obtaining the modified polyamide mesh comprises in a first step the mixture of polyamide fiber and silicon dioxide.
- the obtained mixture is kept at a temperature between 65 and 75 ° C in order to minimize the humidity of the material that can cause gases that hinder the injection and filling of the material. mold cavity.
- the part is then injected at a temperature between 235 and 265 ° C, with injection pressure between 198 and 202 MPa, providing a controlled thickness mesh and openings (11) between the fibers (10) preferably between 2.2 mm and 3.2 mm.
- the results showed statistical difference between the values before and after polymerization measured in millimeters for the groups tested in the molar region, showing that the groups containing fibers (G2 and G3) showed less dimensional change of acrylic resin. , as shown in table 1.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Abstract
Description
MALHA DE NYLON MODIFICADA PARA REFORÇO ESTRUTURAL DE PRÓTESES ODONTOLÓGICAS E PROCESSO DE OBTENÇÃO Modified NYLON MESH FOR STRUCTURAL STRENGTHENING OF DENTAL PROSTHESIS AND OBTAINING PROCESS
CAMPO DA INVENÇÃO FIELD OF INVENTION
A presente invenção descreve uma malha de nylon, particularmente de poliamida modificada, para reforço estrutural de próteses odontológicas e o respectivo processo de obtenção. Mais especificamente compreende uma malha de poliamida com a incorporação de porcentagem controlada de sílica para permitir a união química da resina acrílica à malha de poliamida, potencialmente útil para aplicação em peças protéticas, aparelhos removíveis ortopédicos e ortodônticos e protetores bucais. The present invention describes a nylon mesh, particularly modified polyamide, for structural reinforcement of dental prostheses and the process for obtaining them. More specifically it comprises a polyamide mesh with controlled percentage incorporation of silica to allow the chemical bonding of the acrylic resin to the polyamide mesh, potentially useful for application in prosthetic parts, orthopedic and orthodontic removable appliances and mouth guards.
ANTECEDENTES DA INVENÇÃO BACKGROUND OF THE INVENTION
Na Odontologia, as próteses totais mucossuportadas (dentaduras) são confeccionadas em resina acrílica, um material muito versátil, com boa relação custo benefício e de fácil aplicação clínica e laboratorial, além de cumprir com requisitos físicos e biológicos mínimos para sua utilização em odontologia. Porém, essas próteses de resina acrílica apresentam riscos de fraturas em razão das características finais que os aparelhos próteticos assumem, e por limitações que a própria condição clínica impõe, acarretando, muitas vezes, na diminuição da longevidade da prótese. In dentistry, mucosal-supported total dentures (dentures) are made of acrylic resin, a very versatile, cost-effective material with easy clinical and laboratory application, in addition to meeting minimum physical and biological requirements for use in dentistry. However, these acrylic resin prostheses present fracture risks due to the final characteristics that prosthetic devices assume, and due to limitations that the clinical condition itself imposes, often resulting in decreased prosthetic longevity.
Assim, a alta incidência de fraturas e a necessidade constante de reparo nas próteses totais têm impulsionado o desenvolvimento de materiais e técnicas que possibilitem a melhoria da resistência à flexão e ao impacto (BASTOS, L.G.C. Avaliação da resistência flexionai, do módulo de elasticidade e do tipo de fratura de uma resina acrílica para restaurações provisórias - efeito de diversos reforços. 131f. Dissertação. Universidade de São Paulo, Faculdade de Odontologia de Bauru, Bauru, 2003.)-Thus, the high incidence of fractures and the constant need for repair in total dentures have driven the development of materials and techniques that enable the improvement of flexural and impact strength (BASTOS, LGC Evaluation of flexural strength, modulus of elasticity and type of fracture of an acrylic resin for temporary restorations - effect of several reinforcements 131f Dissertation University of São Paulo Bauru Dentistry, Bauru, 2003.) -
Neste sentido, pesquisas têm sido feitas sobre o uso de fibras de reforço para melhorar as propriedades mecânicas das próteses [(Stipho H. D. Repair of acrylic resin denture base reinforced with glass fiber. J Prosthet Dent. 1998 Nov; 80(5): 546-50); (Kanie T, Fujii K., Arikawa H., Inoue K. Flexural properties and impact strength of denture base polymer reinforced with woven glass fibers. Dent Mater. 2000 mar;16(2):150-8)]. In this regard, research has been done on the use of reinforcement fibers to improve the mechanical properties of prostheses [(Stipho HD Repair of acrylic resin denture base reinforced with glass fiber. J Prosthet Dent. 1998 Nov; 80 (5): 546- 50); (Kanie T, Fujii K., Arikawa H., Inoue K. Flexural properties and impact strength of denture base polymer reinforced with woven glass fibers. Dent Mater. 2000 Mar; 16 (2): 150-8)].
Na tentativa de se aumentar a resistência à flexão e diminuir o risco a fraturas de resinas acrílicas, fibras de vidro, malhas de poliamida e malhas metálicas têm sido incorporadas à massa de resina visando melhores resultados (Perez L.E.C. , Influência da adição de reforço e ciclagem mecânica sobre a resistência ao impacto de resinas para base reembasamento imediato.Tese apresentada ao Programa de Pós-Graduação em Reabilitação Oral - Área de Prótese, da Faculdade de Odontologia de Araraquara, da Universidade Estadual Paulista "Júlio de Mesquita Filho. UNESP,2011.). Estas pesquisas avaliam uma diversidade de materiais de reforço, porém, o mercado odontológico ainda é deficiente de produtos que aliem praticidade e condições de ganhos na resistência do material. In an attempt to increase flexural strength and reduce the risk of fractures of acrylic resins, glass fibers, polyamide meshes and metal meshes have been incorporated into the resin mass for better results (Perez LEC, Influence of reinforcement addition and cycling mechanics on the impact resistance of resins for immediate reloading base. Thesis presented to the Postgraduate Program in Oral Rehabilitation - Prosthesis Area, Araraquara School of Dentistry, Paulista State University "Júlio de Mesquita Filho. UNESP, 2011. These surveys evaluate a variety of reinforcement materials, but the dental market is still deficient in products that combine practicality and conditions of gains in strength of the material.
Newell (Newell J. A. Fundamentos da Moderna Engenharia e Ciência dos Materiais. Rio de Janeiro: LTC. 2010.) classifica as fibras de reforço em carbono (esteticamente deficiente), aramidas (apresentam falta de adesão), polietileno (apresentam boa adesão), fibras de vidro (diversidade de aplicação), poliamida (dificuldade de adesão quando as fibras são entrelaçadas). Newell (Newell JA Fundamentals of Modern Engineering and Materials Science. Rio de Janeiro: LTC. 2010.) classifies carbon reinforcing fibers (aesthetically deficient), aramids (lacking adhesion), polyethylene (showing good adhesion), fibers. glass (application diversity), polyamide (adhesion difficulty when fibers are interlaced).
Ainda segundo Newell, as fibras de nylon possuem boas características de resistência e durabilidade justificadas pelas ligações de hidrogénio com grupos polares amida presentes na sua estrutura.Also according to Newell, nylon fibers have good strength and durability characteristics justified by the connections of hydrogen with polar amide groups present in their structure.
Também, deve ser levada em consideração a estrutura da fibra de poliamida, sua orientação em relação à incidência da força aplicada, a quantidade de fibra incorporada e a aderência da matriz (Vallittu, P. K. Comparison of two different silane compounds used for improving adhesion between fibres and acrylic denture base material. J Oral Rehabil. ,1993; v. 20, n. 5, p. 533-9; Jagger, D. et al. The effect of the addition of poly(methyl methacrylate) fibres on some properties of high strength heat-cured acrylic resin denture base material. J Oral Rehabil., 2003; v. 30, n. 3, p. 231-5). Also, consideration should be given to the structure of the polyamide fiber, its orientation in relation to the incidence of applied force, the amount of fiber incorporated and the adhesion of the matrix (Vallittu, PK Comparison of two different silane compounds used for improving adhesion between fibers). and acrylic denture base material J Oral Rehabil, 1993; v. 20, no. 5, pp. 533-9; Jagger, D. et al. The effect of the addition of poly (methyl methacrylate) fibers on some properties of high strength heat-cured acrylic resin denture base material (J Oral Rehabil., 2003; v. 30, no. 3, p. 231-5).
O estado da técnica descreve telas de reforço em metal, atualmente pouco aceitas, telas de fibra de vidro e de poliamida, esta última apresentando certa limitação quanto ao efeito desejado de melhora na resistência mecânica da resina acrílica. Pessoas de idade avançada que se utilizam de aparelhos protéticos removíveis, tais como dentaduras, em razão muitas vezes da própria condição física, determinam fraturas das peças por quedas durante o manuseio ou ainda durante o uso por fragilização da resina acrílica ao longo do tempo. The state of the art describes currently poorly accepted metal reinforcing mesh, fiberglass and polyamide mesh, the latter having some limitation as to the desired effect of improvement on the mechanical strength of the acrylic resin. Older people using removable prosthetic devices, such as dentures, often because of their physical condition, determine fractures of the parts by falling during handling or even during use by embrittlement of the acrylic resin over time.
Dessa forma, é objeto da presente invenção uma malha de poliamida modificada para reforço estrutural de peças proféticas, aparelhos removíveis ortopédicos e ortodônticos e protetores bucais, dita fibra de poliamida com a incorporação de porcentagem controlada de sílica (Si02) para permitir a união química da resina acrílica à malha de poliamida, provendo uma malha de poliamida em corpo único e espessura desejável, facilitando a penetração da resina acrílica na grade, aumentando a resistência mecânica. Thus, it is object of the present invention a modified polyamide mesh for structural reinforcement of prophetic parts, orthopedic and orthodontic removable appliances and mouth guards, said polyamide fiber with controlled percentage incorporation of silica (Si0 2 ) to allow chemical bonding from acrylic resin to polyamide mesh, providing a one-piece polyamide mesh of desirable thickness, facilitating the penetration of the acrylic resin into the grid, increasing mechanical strength.
SUMÁRIO A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas para preenchimento do corpo de próteses totais. SUMMARY The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for filling the full denture body.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas para reforço de extensões buco faringeanas em prótese buco maxilo facial. The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for reinforcement of pharyngeal buccal extensions in buccal maxillary facial prosthesis.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas para o reparo de próteses totais e parciais removíveis. The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses for the repair of removable full and partial dentures.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas do tipo protocolo de próteses sobre implantes e próteses fixas temporárias em resina acrílica. The invention provides a modified polyamide mesh for structural reinforcement of protocol-type dental implant prostheses and temporary fixed prostheses made of acrylic resin.
A invenção provê uma malha de poliamida modificada para reforço estrutural de aparelhos removíveis ortopédicos e ortodônticos e protetores bucais de uso no esporte. The invention provides a modified polyamide mesh for structural reinforcement of orthopedic and orthodontic removable appliances and mouth guards for sport use.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas que minimiza as ocorrências de fraturas e se constituindo um material inerte quando em contato com tecidos bucais. The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that minimizes fracture occurrences and is an inert material when in contact with oral tissues.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas que permite fácil manuseio por técnicos de prótese dentária, sendo resistente às agressões químicas ou térmicas que as manobras técnicas possam ocasionar ao material. The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that allows easy handling by dental technicians, being resistant to chemical or thermal aggressions that technical maneuvers may cause to the material.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas que inclui a incorporação de sílica à poliamida, permitindo a união química da resina acrílica à W The invention provides a modified polyamide mesh for structural reinforcement of dental prostheses that includes the incorporation of silica into the polyamide, allowing the chemical bonding of the acrylic resin to W
5 5th
malha de poliamida para incrementar a resistência do conjunto resina/poliamida. polyamide mesh to increase the strength of the resin / polyamide assembly.
A invenção provê uma malha de poliamida modificada para reforço estrutural de próteses odontológicas que possibilita a produção de malhas de poliamida em corpo único , e espessura desejável, permitindo que a malha apresente uma grade maior, facilitando a penetração da resina acrílica entre seus espaços o que contribui sobremaneira para o aumento na resistência mecânica da resina acrílica. The invention provides a modified polyamide mesh for structural reinforcement of dental implants which allows the knitting producing polyamide in a single body, and desirable thickness, allowing the mesh to present a larger grid, facilitating the penetration of the acrylic resin between their spaces which greatly contributes to the increase in mechanical strength of acrylic resin.
BREVE DESCRIÇÃO DAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
Afigura 1 apresenta desenho esquemático da malha de poliamida evidenciando as aberturas conformadas entre as fibras. Figure 1 shows a schematic drawing of the polyamide mesh showing the openings formed between the fibers.
As figuras 2A e 2B apresentam imagens de microscopia eletrônica de varredura da malha de poliamida com sílica. Figures 2A and 2B show scanning electron microscopy images of the silica polyamide mesh.
DESCRIÇÃO DETALHADA DA INVENÇÃO DETAILED DESCRIPTION OF THE INVENTION
A malha de poliamida modificada para reforço estrutural de próteses odontológicas, objeto da presente invenção, compreende uma composição que inclui fibra de poliamida e dióxido de silício (Si02) na proporção de 0,3% a 0,5% v/v da composição. The modified polyamide mesh for structural reinforcement of dental prostheses, object of the present invention, comprises a composition comprising polyamide fiber and silicon dioxide (SiO 2 ) in the ratio of 0.3% to 0.5% v / v of the composition. .
O dióxido de silício incorporado na malha de poliamida permite a união química da resina acrílica à malha de poliamida, incrementando a resistência do conjunto resina/poliamida. The silicon dioxide incorporated in the polyamide mesh allows the chemical union of the acrylic resin to the polyamide mesh, increasing the strength of the resin / polyamide assembly.
O processo de obtenção da malha de poliamida modificada compreende em uma primeira etapa a mistura de fibra de poliamida e do dióxido de silício. The process of obtaining the modified polyamide mesh comprises in a first step the mixture of polyamide fiber and silicon dioxide.
A mistura obtida é mantida a uma temperatura entre 65 a 75 °C com a finalidade de reduzir ao máximo a umidade do material que pode causar gases que atrapalham a injeção e o enchimento da cavidade do molde. The obtained mixture is kept at a temperature between 65 and 75 ° C in order to minimize the humidity of the material that can cause gases that hinder the injection and filling of the material. mold cavity.
Em seguida, a peça é injetada em temperatura entre 235 e 265 °C, com pressão de injeção entre 198 e 202 MPa, provendo uma malha com espessura controlada e aberturas (11 ) entre as fibras (10) preferentemente entre 2,2 mm e 3,2 mm. The part is then injected at a temperature between 235 and 265 ° C, with injection pressure between 198 and 202 MPa, providing a controlled thickness mesh and openings (11) between the fibers (10) preferably between 2.2 mm and 3.2 mm.
Estudos preliminares foram realizados para avaliar o comportamento das resinas acrílicas quando reforçadas por estas fibras de poliamida. Para tanto, foi empregada uma resina acrílica termoativada (RAAT) em micro-ondas. Foram utilizados corpos de prova em formato de barra nas dimensões de 20x10x3,3mm (n=9) analisados para a resistência à flexão nas seguintes situações: G1 - RAAT sem fibra de poliamida, G2- RAAT com fibra de poliamida, G3 - RAAT fibra de poliamida modificada por sílica. Preliminary studies were performed to evaluate the behavior of acrylic resins when reinforced by these polyamide fibers. For this, a microwave thermoactivated acrylic resin (RAAT) was used. Bar-shaped specimens in the dimensions of 20x10x3.3mm (n = 9) were analyzed for flexural strength in the following situations: G1 - RAAT without polyamide fiber, G2-RAAT with polyamide fiber, G3 - RAAT fiber of silica modified polyamide.
Para a observação da alteração dimensional, foi realizada a comparação da distância entre pontos pré-determinados em dentes artificiais posicionados em próteses totais do arco maxilar (n=6) submetidos à ciclagem térmica prévia. Na análise da alteração dimensional, foi feita a captura de imagens oclusais antes e após polimerização das próteses totais e ensaio para programa Image Tool e os resultados dados em milímetros. Os valores obtidos foram compilados e submetidos aos testes estatísticos ANOVA e Tukey (5%). In order to observe the dimensional change, the distance between predetermined points in artificial teeth positioned in total maxillary arch prostheses (n = 6) was submitted to previous thermal cycling. In the analysis of the dimensional change, occlusal images were captured before and after polymerization of the total prostheses and assay for the Image Tool program and the results given in millimeters. The values obtained were compiled and submitted to the statistical tests ANOVA and Tukey (5%).
TABELA 1 : valores médios e desvios-padrão para o teste de estabilidade dimensional
Para a avaliação da resistência a flexão em três pontos foi utilizada uma máquina de ensaio universal e os resultados apresentados em megapascal (MPa). For the evaluation of three-point flexural strength a universal testing machine was used and the results presented in megapascal (MPa).
TABELA 2: valores médios (MPa) e desvios-padrão para o teste de resistência à flexão
A análise de variância e teste de Tukey a 5% mostraram diferença estatisticamente significativa entre todos os grupos, sendo que os grupos reforçados com a malha (G2 e G3) mostraram os melhores resultados. The analysis of variance and Tukey test at 5% showed a statistically significant difference between all groups, and the groups reinforced with the mesh (G2 and G3) showed the best results.
No que se refere à estabilidade dimensional, os resultados mostraram diferença estatística entre os valores antes e após a polimerização medidos em milímetros para os grupos testados na região molar, evidenciando que os grupos contendo fibras (G2 e G3) mostraram menor alteração dimensional da resina acrílica, conforme apresentado na tabela 1. Regarding dimensional stability, the results showed statistical difference between the values before and after polymerization measured in millimeters for the groups tested in the molar region, showing that the groups containing fibers (G2 and G3) showed less dimensional change of acrylic resin. , as shown in table 1.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRBR1020120281198 | 2012-11-01 | ||
| BR102012028119-8A BR102012028119B1 (en) | 2012-11-01 | 2012-11-01 | modified polyamide mesh for structural reinforcement of dental prostheses and obtaining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014066963A1 true WO2014066963A1 (en) | 2014-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2013/000423 Ceased WO2014066963A1 (en) | 2012-11-01 | 2013-10-17 | Modified nylon mesh for structural reinforcement of dental prostheses and method for producing same |
Country Status (2)
| Country | Link |
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| BR (1) | BR102012028119B1 (en) |
| WO (1) | WO2014066963A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220401194A1 (en) * | 2019-11-18 | 2022-12-22 | Kuraray Noritake Dental Inc. | Dental intraoral device and manufacturing method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687451B1 (en) * | 1994-05-16 | 2001-08-08 | DENTSPLY DETREY GmbH | Method of making a dental prosthesis and curable system |
| US6599125B1 (en) * | 1999-08-27 | 2003-07-29 | University Of Connecticut | Prefabricated components for dental appliances |
-
2012
- 2012-11-01 BR BR102012028119-8A patent/BR102012028119B1/en active IP Right Grant
-
2013
- 2013-10-17 WO PCT/BR2013/000423 patent/WO2014066963A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0687451B1 (en) * | 1994-05-16 | 2001-08-08 | DENTSPLY DETREY GmbH | Method of making a dental prosthesis and curable system |
| US6599125B1 (en) * | 1999-08-27 | 2003-07-29 | University Of Connecticut | Prefabricated components for dental appliances |
Non-Patent Citations (2)
| Title |
|---|
| JOHN, J. ET AL.: "Flexural strength of heat- polymerized polymethyl methacrylate denture resin reinforced with glass, aramid, or nylon fibers", THE JOURNAL OF PROSTHETIC DENTISTRY, vol. 86, no. 4, 2001, pages 424 - 427 * |
| MAHFUZ H. ET AL.: "Reinforcement of nylon .6 with functionalized silica: nanoparticles for enhanced tensile strength and modulus", NANOTECHNOLOGY, vol. 19, no. 44, 2008, pages 445702 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220401194A1 (en) * | 2019-11-18 | 2022-12-22 | Kuraray Noritake Dental Inc. | Dental intraoral device and manufacturing method thereof |
| US12551321B2 (en) * | 2019-11-18 | 2026-02-17 | Kuraray Noritake Dental Inc. | Dental intraoral device and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| BR102012028119A2 (en) | 2014-10-29 |
| BR102012028119B1 (en) | 2021-02-09 |
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