A three-dimensional finite element analysis to evaluate stress distribution tooth in tooth implant-supported prosthesis with variations in non-rigid connector design and location

Khuller, Nitin; Padmanabhan, T. V.; Kumar, Varun; Parthasarathi, N.; Maheswari, M. Uma; Kumar, S. Madhan

doi:10.4103/ijdr.ijdr_538_16

Cited by 5 publications

(5 citation statements)

References 1 publication

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“…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, 19,30–33 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 34–38 .…”

Section: Discussioncontrasting

confidence: 99%

“…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: 64%

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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: 99%

Section: Discussioncontrasting

confidence: 64%

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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“…Several investigators have employed the FE method as a tool to understand the stress and strain distribution around implant, bone and tooth in tooth implant fixed prosthesis under static load, with different locations and designs of non-rigid connectors, under functional loads to evaluate the performance of dental restoration prosthesis. 11,12,18,19 The purpose of this work was to investigate the significance of relevant geometrical parameters to the design optimization of dental implants to improve the mechanical strength of a fourunit FPD supported by two dental implants. In this context, the FE analysis was used to evaluate the inclination effect of supporting implants on the biomechanical behavior of dental bridge system, in terms of stress distribution and peak stress level.…”

Section: Introductionmentioning

confidence: 99%

Effect of supporting implants inclination on stability of fixed partial denture: A finite element study

Boukhlif

Merdji

Roy

et al. 2020

Proc Inst Mech Eng H

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The aim of this finite element study was to analyze effect of supporting implants inclination on stress distribution in the bone for a four-unit fixed partial denture. A three-dimensional finite element model of mandibular molar section of the bone to receive implants was constructed. Three implant-supported fixed partial dentures, with null, moderate and wide tilting, of 0°, 15° and 30° implant inclinations, respectively, were modeled. A mechanical load of 10 MPa was applied in coronal–apical direction on bridge framework at the regions of crowns positions. The finite element analysis was performed, and von Mises stress levels were calculated. Peak stress concentration in the cortical bone was observed mostly around the implant necks, in inter-implants line. There was favorable stress distribution during loading, with peak stress being 90.04 MPa for 0°, which decreased to 54.33 MPa for 15° and 46.36 MPa for 30° inclination. The supporting implants inclination in fixed partial denture plays an important role in stress distribution and may be helpful in preventing bone loss and implant failure. This phenomenon is likely to be more pronounced in bones of poor quality. Within the limitation of this study, it seems that the inclination of implants in fixed partial denture has a favorable effect on stress distribution pattern values around the supporting implants.

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“…Nitin y cols 64 evaluaron la distribución del stress al aplicar fuerzas verticales en diseños de prótesis fijas implanto-soportadas con conectores rígidos y no rígidos, hallando resultados similares a los nuestros, en general el mayor stress se recibe donde se encuentra el conector no rígido.…”

Section: Discussionunclassified

“…Las concentraciones de estrés fueron mínimas en: todos los modelos en el hueso de soporte alrededor del pilar del implante y en los modelos con conectores no rígidos el estrés al alrededor del implante y del diente natural Se concluye que es recomendable colocar el conector no rígido en el lado mesial del pilar distal del implante. 64 El propósito de este método de elementos finitos (MEF) fue evaluar la distribución de la tensión alrededor del hueso, el implante y el diente en prótesis fijas de implantes dentales con variaciones en el diseño y ubicación de conectores no rígidos bajo cargas funcionales simuladas. Tres modelos tridimensionales de MEF que conectan el diente y el implante se construyeron con diferentes ubicaciones y tipos de conectores no rígidos.…”

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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A three-dimensional finite element analysis to evaluate stress distribution tooth in tooth implant-supported prosthesis with variations in non-rigid connector design and location

Cited by 5 publications

References 1 publication

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

Effect of supporting implants inclination on stability of fixed partial denture: A finite element study

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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