Baixuan Yang, A. Irastorza-Landa, P. Heuberger, H. Ploeg
{"title":"两种种植体设计牙种植体插入有限元应变分析的数字图像相关验证","authors":"Baixuan Yang, A. Irastorza-Landa, P. Heuberger, H. Ploeg","doi":"10.1115/vvuq2023-107659","DOIUrl":null,"url":null,"abstract":"\n Sufficient anchorage of dental implants, defined as mechanical engagement between implant and bone at the time of insertion, has been recommended for positive clinical outcomes, particularly in immediate loading protocols. Accurate measuring and analysis of stress and strain in the bone are imperative to understand anchorage from the biomechanics perspective. However, the stress and strain distributions at the bone-implant interface are impossible to measure in vivo. Therefore, the aim of this study was to develop and validate an explicit continuum finite element analysis (FEA) to investigate the stress and strain in a bone surrogate during the insertion of a dental implant: with cutting flute (CF) and without (NCF). Ten dental implants (five with CF and five with NCF) were inserted into ten rigid polyurethane (PU) foam blocks with a prepared pilot hole. During the insertion, a stereo digital image correlation (DIC) system was used to record in-plane deformation on the PU foam surface at a frequency of 1.0 Hz; and, surface von Mises strain, εv_DIC, was calculated (VIC-3D, Correlated Solutions Inc). In parallel, the insertion was simulated using FEA with explicit solver (Abaqus Explicit version 2017, Simulia). The PU foam was defined as an elastic-plastic material with a progressive crushable foam failure behaviour. The surface von Mises strain predicted from FEA, εv_FEA, was compared against εv_DIC. Uncertainty of DIC displacement measurement was 0.6 μm; and the static noise floor for the strain measurement was 500 microstrain (με). Coefficient of determination for εv_DIC and εv_FEA along a horizontal line for the CF and NCF implants were 0.80 and 0.78, respectively, which suggested the overall FEA performance was good. FEA results indicated that the cutting flute reduced the maximum shear stress in the PU foam and axial force which facilitated the insertion with less effort. This study demonstrated the successful combination of mechanical testing and FEA to better understand the mechanics of dental implant insertion.","PeriodicalId":387733,"journal":{"name":"ASME 2023 Verification, Validation, and Uncertainty Quantification Symposium","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Digital Image Correlation Validation of Finite Element Strain Analysis of Dental Implant Insertion for Two Implant Designs\",\"authors\":\"Baixuan Yang, A. Irastorza-Landa, P. Heuberger, H. Ploeg\",\"doi\":\"10.1115/vvuq2023-107659\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\\n Sufficient anchorage of dental implants, defined as mechanical engagement between implant and bone at the time of insertion, has been recommended for positive clinical outcomes, particularly in immediate loading protocols. Accurate measuring and analysis of stress and strain in the bone are imperative to understand anchorage from the biomechanics perspective. However, the stress and strain distributions at the bone-implant interface are impossible to measure in vivo. Therefore, the aim of this study was to develop and validate an explicit continuum finite element analysis (FEA) to investigate the stress and strain in a bone surrogate during the insertion of a dental implant: with cutting flute (CF) and without (NCF). Ten dental implants (five with CF and five with NCF) were inserted into ten rigid polyurethane (PU) foam blocks with a prepared pilot hole. During the insertion, a stereo digital image correlation (DIC) system was used to record in-plane deformation on the PU foam surface at a frequency of 1.0 Hz; and, surface von Mises strain, εv_DIC, was calculated (VIC-3D, Correlated Solutions Inc). In parallel, the insertion was simulated using FEA with explicit solver (Abaqus Explicit version 2017, Simulia). The PU foam was defined as an elastic-plastic material with a progressive crushable foam failure behaviour. The surface von Mises strain predicted from FEA, εv_FEA, was compared against εv_DIC. Uncertainty of DIC displacement measurement was 0.6 μm; and the static noise floor for the strain measurement was 500 microstrain (με). Coefficient of determination for εv_DIC and εv_FEA along a horizontal line for the CF and NCF implants were 0.80 and 0.78, respectively, which suggested the overall FEA performance was good. FEA results indicated that the cutting flute reduced the maximum shear stress in the PU foam and axial force which facilitated the insertion with less effort. 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引用次数: 0
摘要
牙种植体的充分锚固,定义为植入时种植体与骨之间的机械接合,已被推荐用于积极的临床结果,特别是在立即加载方案中。准确测量和分析骨内的应力和应变是从生物力学角度理解锚定的必要条件。然而,骨-种植体界面的应力和应变分布是不可能在体内测量的。因此,本研究的目的是开发并验证一种明确的连续体有限元分析(FEA),以研究在牙种植体插入期间骨替代物的应力和应变:有切割凹槽(CF)和没有切割凹槽(NCF)。将10个种植体(5个CF和5个NCF)植入10个硬质聚氨酯(PU)泡沫块中,并准备好导孔。在插入过程中,使用立体数字图像相关(DIC)系统以1.0 Hz的频率记录PU泡沫表面的面内变形;计算表面von Mises应变εv_DIC (VIC-3D, related Solutions Inc .)。同时,使用显式求解器(Abaqus explicit version 2017, simula)对插入进行了有限元模拟。聚氨酯泡沫被定义为一种具有渐进可破碎泡沫破坏行为的弹塑性材料。用有限元法预测的表面von Mises应变εv_FEA与εv_DIC进行了比较。DIC位移测量的不确定度为0.6 μm;应变测量的静态噪声底限为500微应变(με)。CF和NCF植入体在水平方向上的εv_DIC和εv_FEA的决定系数分别为0.80和0.78,表明整体FEA性能良好。有限元分析结果表明,切割槽降低了PU泡沫中的最大剪切应力和轴向力,有利于以较小的力插入。本研究成功地将力学测试与有限元分析相结合,以更好地了解种植体插入的力学特性。
Digital Image Correlation Validation of Finite Element Strain Analysis of Dental Implant Insertion for Two Implant Designs
Sufficient anchorage of dental implants, defined as mechanical engagement between implant and bone at the time of insertion, has been recommended for positive clinical outcomes, particularly in immediate loading protocols. Accurate measuring and analysis of stress and strain in the bone are imperative to understand anchorage from the biomechanics perspective. However, the stress and strain distributions at the bone-implant interface are impossible to measure in vivo. Therefore, the aim of this study was to develop and validate an explicit continuum finite element analysis (FEA) to investigate the stress and strain in a bone surrogate during the insertion of a dental implant: with cutting flute (CF) and without (NCF). Ten dental implants (five with CF and five with NCF) were inserted into ten rigid polyurethane (PU) foam blocks with a prepared pilot hole. During the insertion, a stereo digital image correlation (DIC) system was used to record in-plane deformation on the PU foam surface at a frequency of 1.0 Hz; and, surface von Mises strain, εv_DIC, was calculated (VIC-3D, Correlated Solutions Inc). In parallel, the insertion was simulated using FEA with explicit solver (Abaqus Explicit version 2017, Simulia). The PU foam was defined as an elastic-plastic material with a progressive crushable foam failure behaviour. The surface von Mises strain predicted from FEA, εv_FEA, was compared against εv_DIC. Uncertainty of DIC displacement measurement was 0.6 μm; and the static noise floor for the strain measurement was 500 microstrain (με). Coefficient of determination for εv_DIC and εv_FEA along a horizontal line for the CF and NCF implants were 0.80 and 0.78, respectively, which suggested the overall FEA performance was good. FEA results indicated that the cutting flute reduced the maximum shear stress in the PU foam and axial force which facilitated the insertion with less effort. This study demonstrated the successful combination of mechanical testing and FEA to better understand the mechanics of dental implant insertion.