Evaluation of Effect of Connector Designs in Implant Tooth-supported Fixed Partial Denture: A Two-dimensional Finite Element Analysis

Gowda, Srinivasa; Quadras, Dilip D; Sesappa, Rajeet S; Katapadi, Vidyachandra; Kumar, Lalit; Kulkarni, Dinraj; Mishra, Nitu

doi:10.5005/jp-journals-10024-2317

Cited by 7 publications

(6 citation statements)

References 100 publications

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“…Naguib et al, 18 concluded that the increase in implant diameter with a proportionate increase in length was directly related to reduced stress on the prostheses. The main focus of this study was to evaluate different connector designs as an input variable through showing the magnitude of Von Misses stress Contrary to previous research studies supporting non-rigid FDPs that exhibit the least amount of stress and favorable prognosis to the tooth abutment in a tooth-implant FDP, 19,[30][31][32][33] our results demonstrated that FDPs with rigid connection showed considerably lower mean stress values than those with non-rigid connection design. This can be interpreted by the non-rigid connection's function to divide the prosthesis into two different parts; a single crown on the tooth and a cantilever on the implant side resulting in less stress on the tooth itself but increased unfavorable stresses on the prosthesis as well as tooth intrusion.…”

Section: Discussioncontrasting

confidence: 65%

“…TA B L E 1 Material properties assigned to implant materials, dental tissues, prosthesis, and bone. Gowda et al, 19 compared three different FDP models connecting a mesial natural tooth with a distal implant. Focusing on connector design, the first model had rigid connectors mesially and distally, the second model had non-rigid mesially and rigid connectors distally, while the third model had mesial rigid and distal non-rigid connector designs.…”

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confidence: 99%

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Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

Naguib

Hashem

Abougazia³

et al. 2023

Journal of Prosthodontics

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Purpose To investigate the significance of the connector type on stress dissemination within the tooth‐implant‐supported fixed dental prostheses in the mandibular posterior region with different combinations of implant diameter and length by means of finite element analysis (FEA). Materials and Methods Six models of different designs for tooth‐implant fixed dental prosthesis (FDPs) were simulated and divided into two main groups. Implant lengths were 10, 11.5, and 13 mm while implant diameters were 3.7, 4.7, and 5.7 mm. The main difference between the groups was the connector type. Models were evaluated using 3D FEA (Solidworks Premium 2018 × 64 Edition). Group A tooth‐implant FDPs (5.7 mm × 10 mm) had a mesial and distal rigid connector while group B tooth‐implant FDPs (3.7 mm × 10 mm, 3.7 mm × 11.5 mm, 3.7 mm × 13 mm, 4.7 mm × 10 mm and 5.7 mm × 10 mm) had a mesial non‐rigid connector in their design between the pontic and the tooth. Models were analyzed to determine the magnitude of von Misses Stresses at six specific zones (fixed dental prosthesis, bone around distal implant, bone around tooth, cementum, periodontal ligament, implant) under vertical occlusal loading of 100 N after meshing and assigning the material properties. Results Stress values around the supporting bone were significantly higher in Group B (tooth‐implant FDP with non‐rigid connection) when compared to Group A (tooth‐implant FDP with rigid connection). Also, the stresses measured at the FDP level showed that the rigid connection group (5.7 mm × 10 mm) exhibited 26% lower stress values when compared to the non‐rigid group (5.7 mm × 10 mm). Conclusions Implant‐tooth FDPs with rigid connector design using the combination of implant diameter and length (5.7 mm × 10 mm) demonstrated a better design modality thus predicting a higher success rate and more longevity than using the non‐rigid connection option.

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Section: Discussioncontrasting

confidence: 65%

mentioning

confidence: 99%

Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

Naguib

Hashem

Abougazia³

et al. 2023

Journal of Prosthodontics

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“…Among all the stresses, mechanical tension and flow shear stress (FSS) are the most important forces on the implant-bone interface [ 6 ]. There is a large amount of reticulated bone cancellous in bone tissue, and the pressure of tissue or the pulse of blood vessels can cause the flow of interstitial fluid in bone trabeculae and then produce FSS on bone tissue cells [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Effects of Stress on Osteoblast Proliferation and Differentiation Based on Endoplasmic Reticulum Stress and Wntβ‐Catenin Signaling Pathway

Zhong

Yang

et al. 2022

Contrast Media & Molecular Imaging

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In order to investigate the effect of fluid shear stress on the proliferation of osteoblasts and the regulatory role of the Wnt/β-catenin signaling pathway in cell proliferation, a new method based on endoplasmic reticulum stress and Wnt/β-catenin signaling pathway stress-mediated was proposed. Taking MG63 osteoblasts as the research object, they were inoculated on glass slides (G group), polished titanium sheets (P group), and sandblasted acid-base treated pure titanium sheets (S group). In addition, FSS of 0 dunes/cm2 (static group) and 12 dunes/cm2 (stress group) were given, respectively. Then, quantitative reverse transcription-PCR (RT-qPCR) and western blot were used to detect the mRNA and protein expressions of low-density lipoprotein receptor-related protein 5 (LRP5) and β-catenin in MG63 cells. The results showed that the expression levels of β-catenin mRNA and protein in cells in the stress group were significantly increased ( P < 0.05 ), and the protein expression level of LRP5 was significantly decreased ( P < 0.05 ). The expression level of LRP5 in group S was greatly inhibited, while the expression level of β-catenin was significantly upregulated. Therefore, FSS can stimulate the expression of LRP5 and β-catenin in osteoblasts. Fluid shear stress can promote osteoblast proliferation in vitro; the Wnt/β-catenin signaling pathway is involved in regulating fluid shear stress to promote osteoblast proliferation.

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“…Godwa y cols 63 evaluaron la distribución del stress en diferentes diseños de prótesis parciales fijas implanto-soportadas con conectores rígidos y no rígidos. Hallando resultados similares a los nuestros, al aplicar fuerzas verticales, se encontró que en el diseño con conectores rígidos las fuerzas se distribuyen tanto en el pilar anterior como en el posterior, en el modelo con el conector no rígido ene le sector anterior las fuerzas se van hacia el sector posterior (implante) esto difiere a lo este estudio ha hallado, y en el modelo con el conector en el sector posterior las fuerzas recayeron en el pilar posterior semejante a lo ocurrido en este estudio.…”

Section: Discussionunclassified

“…Godwa et al 2018, 63 evaluaron el efecto de diferentes diseños de conectores en la distribución del patrón y la magnitud del estrés generado en el hueso de una prótesis parcial fija implanto-dento-soportada de 3 unidades con una extensión distal (pilar mesial segundo premolar, primera molar como póntico y pilar de implante en segundo molar), usando el método 2D del elemento finito (MEF). Tres modelos fueron diseñados y construidos con conectores rígidos mesiales y distales (modelo 1), conector no rígido mesial (modelo 2) y conector no rígido distal (modelo 3), utilizando el software ANSYS, versión 10.0, se aplicó una carga axial estática de 240 N. Las concentraciones máximas de estrés se mostraron en las zonas crestales el hueso de soporte alrededor del implante, en el modelo 1.…”

Section: Gowda Et Al 2013unclassified

Evaluación de la distribución del estrés comprensivo de una prótesis fija de 4 elementos con diferentes conectores a través del método de finito

Donayre¹

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La presencia de brechas amplias o pilares inclinados es un reto para la rehabilitación con prótesis parcial fija sea con conectores rígidos o no rígidos; aún no está claro que alternativa es más adecuada en estos casos, pues no es conocido el comportamiento biomecánico de estos conectores y como actúan en la distribución de las fuerzas. El objetivo del estudio fue evaluar la distribución del estrés compresivo de una prótesis fija de 4 elementos con diferentes conectores a través del método de elemento finito. El grupo de estudio estuvo conformado por cuatro simulaciones de puentes de primera premolar a segunda molar inferior; en donde el modelo 1 presentaba ambos pilares rectos y conectores rígidos. El modelo 2 presentaba el pilar posterior mesializado a 30º con conector rígido. El modelo 3 presentaba el pilar posterior mesializado a 30º, con conector no rígido posicionado en mesial de la segunda molar. El modelo 4 presentaba el pilar posterior mesializado a 30º, con conector no rígido posicionado en distal de la primera premolar. Todos evaluados por el método de elemento finito (MEF), bajo una condición de carga compresiva de 500N, en donde la distribución de tensiones se evaluó con la escala de Von Mises. En el modelo 4 se halló el más alto valor de estrés radicular y óseo (214.34 MPa y 153.19 MPa), el menor valor de estrés radicular y óseo fue hallado en el modelo 2 (23.89 MPa y 11.04 MPa). En relación a la estructura de la prótesis el más alto nivel de estrés a nivel de porcelana lo recibe el modelo 4 (388.62 MPa) y en el metal el modelo 1 (888.71 MPa), mientras que los menores valores fueron hallados en el modelo 2 en ambas estructuras…

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Evaluation of Effect of Connector Designs in Implant Tooth-supported Fixed Partial Denture: A Two-dimensional Finite Element Analysis

Abstract: When implant is used as distal abutment in three-unit implant tooth-supported fixed partial denture with pontic at first molar in distal extension situation, it is recommended to place the nonrigid connector in the mesial side of the distal implant abutment.

Cited by 7 publications

References 100 publications

Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

Effect of non‐rigid connector on the stress distribution of tooth‐implant supported fixed prostheses using different implant length and diameter: A comparative 3D finite element study

[Retracted] Effects of Stress on Osteoblast Proliferation and Differentiation Based on Endoplasmic Reticulum Stress and Wntβ‐Catenin Signaling Pathway

Evaluación de la distribución del estrés comprensivo de una prótesis fija de 4 elementos con diferentes conectores a través del método de finito

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