Comparative Strain Gauge Analysis of External and Internal Hexagon, Morse Taper, and Influence of Straight and Offset Implant Configuration

Nishioka, Renato Sussumu; Vasconcellos, Luis Gustavo Oliveira de; Nishioka, Gabriela Nogueira de Melo

doi:10.1097/id.0b013e318211fce8

Cited by 49 publications

(72 citation statements)

References 17 publications

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“…One thousand units of microstrain (1000 µε) correspond to the stretching or compression of 0.1% of the structure in question. 33,34 Nishioka et al 28 emphasizes that the CoCr alloy has been increasingly used in supported fixed dental prosthesis and supported implants for its high corrosion resistance, which ensures its biocompatibility.…”

Section: Discussionmentioning

confidence: 99%

“…10,23,24,28,35 In his study, Goll 35 recommends a clinical protocol to be followed when making prosthetic implants. One of the recommendations for measures to avoid mismatch of the prosthetic implant is casting in a single block.…”

Section: Discussionmentioning

confidence: 99%

“…They found that to maintain its physiological characteristics of elasticity, it was necessary to freeze the bone in -20ºC saline after removal. 20 Polyurethane is therefore employed because this substrate is used in various research work with extensometry to simulate human bone marrow 10,[22][23][24][25][26][27][28][29] . Such authors state that polyurethane has a modulus of elasticity similar to human bone (Polyurethane: 3.6GPa / medullary bone: 4.0 to 4.5GPa) and is a homogeneous and isotropic substrate.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Different Abutments and Connections in Deformation Crestal Bone

et al. 2016

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Effect of Different Abutments and Connections in Deformation Crestal Bone

et al. 2016

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“…Alguns trabalhos utilizam dispositivos especiais de aplicação de carga 6 e outros empregam máquinas de ensaio universal 17,18 . O presente estudo utilizou o dispositivo de aplicação de carga (DAC), de acordo com estudos relatados na literatura que utilizaram esse dispositivo para aplicação de cargas estáticas axiais e não axiais 10,11,13 .…”

Section: Discussionunclassified

“…Diferentes estudos in vitro, utilizando-se a técnica de extensometria e o poliuretano para simulação da estrutura óssea, verificaram o comportamento biomecânico em diferentes posições dos implantes e também em diferentes componentes para prótese sobre implantes [8][9][10] . A extensometria linear elétrica é uma proposta concreta para avaliar a distribuição de cargas estáticas ao redor de implantes [10][11][12] .…”

Section: Introductionunclassified

Estudo comparativo das microdeformações resultantes de cargas estáticas axiais e não axiais em próteses de três elementos implantossuportadas

Campos

Rodrigues

Balducci

et al. 2014

Rev. odontol. UNESP

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ResumoIntrodução: O controle das microdeformações ao redor dos implantes é um fator que pode levar a uma melhor osseointegração e manutenção das estruturas ósseas. Objetivo: Avaliar a distribuição de tensões ao redor dos implantes, utilizando-se a extensometria, sob a influência da aplicação de cargas estáticas axiais e não axiais em próteses parciais fixas de três elementos, em diferentes pontos de aplicação de carga. Material e método: Em um bloco de poliuretano, foram instalados três implantes de hexágono interno e, sobre esses implantes, pilares protéticos microunit foram conectados com torque de 20 Ncm. Cilindros plásticos foram utilizados para realização dos enceramentos padronizados que, posteriormente, foram fundidos em liga de cobalto cromo. Extensômetros foram colados na superfície do bloco ao redor dos três implantes. As estruturas metálicas foram parafusadas com torque de 10 Ncm cada. Em seguida, foram realizados carregamentos verticais estáticos de 30 kgf, durante dez segundos, em cinco pontos pré-determinados (A, B, C, D e E), utilizando um dispositivo de aplicação de cargas (DAC). Resultado: Os dados foram analisados pelo teste RM ANOVA, que indicou que o efeito entre o ponto de aplicação de carga e os diferentes corpos de prova não foi estatisticamente significante, enquanto que, para o efeito entre os pontos de aplicação de carga, houve diferença (p=0,0001). Em seguida, aplicou-se o teste de comparação múltipla de Tukey. Conclusão: A aplicação de carga sobre os pontos não axiais D e E produziu um aumento da magnitude de microdeformação ao redor dos implantes.Descritores: Implantes dentários; prótese parcial fixa; prótese dentária. AbstractIntroduction: The control of the micro strain surrounding implants is a factor that can lead to a better osseointegration and maintenance of bone structures. Objective: evaluate in vitro, using strain gauge analysis , the influence of the axial and non-axial static load in implant-supported fixed partial dentures, varying the point of load application. Material and method: In a block of polyurethane three internal hexagonal implants were installed, on implants abutments microunit were connected with torque of 20 Ncm, and plastic prosthetic cylinders were screwed on to the abutments, which received standard patterns cast in Co-Cr alloy (n=10). Four strain gauges were bonded on the surface of the block tangentially to the three implants. Each metallic structure was screwed onto the microunit with a 10 Ncm torque. With a load application device (DAC) static vertical loads of 30kgf were applied for ten seconds at five predetermined points (A, B, C, D and E). Result: Result analyzed by RM ANOVA, in which the effect of the point of load application and differents specimens were not statistically significant, whereas regarding the points of load application presented statistical differenced (p=0.0001). Applying Tukey's multiple comparison tests. Conclusion: The application of load on the non-axial points D and E produced an increase in the magnitude of micro strain ar...

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A strain gauge analysis comparing 4‐unit veneered zirconium dioxide implant‐borne fixed dental prosthesis on engaging and non‐engaging abutments before and after torque application

Epprecht

Zeltner

Benić

et al. 2018

Clinical & Exp Dental Res

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This study quantified the strain development after inserting implant‐borne fixed dental prosthesis (FDP) to various implant–abutment joints. Two bone‐level implants (∅ = 4.1 mm, RC, SLA 10 mm, Ti, Straumann) were inserted in polyurethane models (N = 3) in the area of tooth nos 44 and 47. Four‐unit veneered zirconium dioxide FDPs (n = 2) were fabricated, one of which was fixed on engaging (E; RC Variobase, ∅ = 4.5 mm, H = 3.5 mm) and the other on non‐engaging (NE) abutments (RC Variobase, ∅ = 4.5 mm, H = 5.5 mm). One strain gauge was bonded to the occlusal surface of pontic no. 46 on the FDP and the other two on the polyurethane model. Before (baseline) and after torque (35 Ncm), strain values were recorded three times. Data were analyzed using Kruskal–Wallis and Mann–Whitney U tests (α = 0.05). Mean strain values presented significant increase after torque for both E and NE implant–abutment connection type (baseline: E = 4.33 ± 4.38; NE = 4.85 ± 4.85; torque: E = 196.56 ± 188.02; NE = 275.63 ± 407.7; p < .05). Mean strain values based on implant level presented significant increase after torque for both E and NE implant–abutment connection (baseline: E = 4.94 ± 5.29; NE = 5.78 ± 5.69; torque: E = 253.78 ± 178.14; NE = 347.72 ± 493.06; p < .05). The position of the strain gauge on implants (p = .895), FDP (p = .275), and abutment connection type (p = .873) did not significantly affect the strain values. Strain levels for zirconium dioxide implant‐borne FDPs were not affected by the implant–abutment connection type.

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Comparative Strain Gauge Analysis of External and Internal Hexagon, Morse Taper, and Influence of Straight and Offset Implant Configuration

Cited by 49 publications

References 17 publications

Effect of Different Abutments and Connections in Deformation Crestal Bone

Effect of Different Abutments and Connections in Deformation Crestal Bone

Estudo comparativo das microdeformações resultantes de cargas estáticas axiais e não axiais em próteses de três elementos implantossuportadas

A strain gauge analysis comparing 4‐unit veneered zirconium dioxide implant‐borne fixed dental prosthesis on engaging and non‐engaging abutments before and after torque application

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