Stress distribution in tooth supported removable partial denture fabricated using two different materials: A 3-dimensional finite element analysis

Rodrigues, Marilyn Tereza; Gowda, B. H. Harshitha; Alva, Babashankar

doi:10.1016/j.matpr.2021.01.943

Cited by 3 publications

(5 citation statements)

References 6 publications

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“…The results were extracted and grouped to identify the targeted problem and how to solve it. Among the selected articles, 14 studies have reported the influence of different retainer designs [44,[55][56][57][58][59][60][61][62][63][64][65][66][67], while seven studies measured the influence of different designs and materials of major connectors [66,[69][70][71][72][73][74], and the studies concerned with implant-assisted RPD were ten articles [17,43,55,[76][77][78][79][80][81][82]. The results were broad-covering with heterogeneous and disparate data, which made it not compatible to be a meta-analysis or systematic review.…”

Section: Resultsmentioning

confidence: 99%

“…The narrow palate shows the least displacement in the major connector comparing the wide and shallow palate [72,73]. The flexible framework materials are always associated with less stress in the major connector, but more displacement on the ridge is (i) In all IARPD designs, there was a clear diminish in the displacement when compared with the conventional RPD (ii) In IARPD, the lowest displacement has been exhibited in an implant located in the middle of the residual ridge and then the distal area of the ridge, while the mesial location of the implant showed the lowest stress in the terminal abutment (iii) The mesially placed implant showed the highest stress value in the internal thread of the implant followed by the middle and then the distal area, which showed the least stress El-Okel and Elnady 2013 [79] Six 2D models (i) Natural [66,73,74]. Table 3 shows that the studies evaluated the influences of major connectors on the stress and deflection of RPDs.…”

Section: Design Of Major Connectorsmentioning

confidence: 99%

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Biomechanics in Removable Partial Dentures: A Literature Review of FEA‐Based Studies

Mousa

Abdullah

Jamayet

et al. 2021

BioMed Research International

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The present study was aimed at reviewing the studies that used finite element analysis (FEA) to estimate the biomechanical stress arising in removable partial dentures (RPDs) and how to optimize it. A literature survey was conducted for the English full-text articles, which used only FEA to estimate the stress developed in RPDs from Jan 2000 to May 2021. In RPDs, the retaining and supporting structures are subjected to dynamic loads during insertion and removal of the prosthesis as well as during function. The majority of stresses in free-end saddle (FES) RPDs are concentrated in the shoulder of the clasp, the horizontal curvature of the gingival approaching clasp, and the part of the major connector next to terminal abutments. Clasps fabricated from flexible materials were beneficial to eliminate the stress in the abutment, while rigid materials were preferred for major connectors to eliminate the displacement of the prosthesis. In implant-assisted RPD, the implant receive the majority of the load, thereby reducing the stress on the abutment and reducing the displacement of the prosthesis. The amount of stress in the implant decreases with zero or minimal angulation, using long and wide implants, and when the implants are placed in the first molar area.

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Section: Resultsmentioning

confidence: 99%

Section: Design Of Major Connectorsmentioning

confidence: 99%

Biomechanics in Removable Partial Dentures: A Literature Review of FEA‐Based Studies

Mousa

Abdullah

Jamayet

et al. 2021

BioMed Research International

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“…[20][21][22][23][24] To cover up the effect of using different material types, the FEA has been used to investigate the stress distribution in tooth-supported RPDs made of Co-Cr and thermoplastic nylon. 25 The present study aims to design a 3D FE model from actual patient data using a combination of computed tomography (CT) scan equipment and computer-aided design (CAD) software to assess the stress distribution under mandibular class II distal extension RPDs constructed from CP Ti and Co-Cr alloys. Most of the previous studies used either a simplified finite element model in which the primary model parts such as tissue, cortical bone, and spongy bone were not considered in the simulation study, or the study did not consider the effect of using different RPD materials on stress distribution, and its consequences on issues like longevity and suitability of a restoration.…”

Section: Introductionmentioning

confidence: 99%

“…Most of the previous studies used either a simplified finite element model in which the primary model parts such as tissue, cortical bone, and spongy bone were not considered in the simulation study, or the study did not consider the effect of using different RPD materials on stress distribution, and its consequences on issues like longevity and suitability of a restoration. 23,25,26 Unlike the previous studies, this study investigates the stress pattern in both the RPD framework and the underlying supporting structures (mandibular bone, supporting mucosa, and principle abutment teeth). In addition, the current proposed model considers the feature of the actual contact between the various parts of the evaluated designs.…”

Section: Introductionmentioning

confidence: 99%

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Finite element analysis of class II mandibular unilateral distal extension partial dentures

Sabri

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The current paper aims to investigate the stress distribution developed in Kennedy Class II mandibular distal extension removable partial dentures due to applying a unilateral load condition in both vertical and lateral oblique directions. 3D models of mandible bone and RPD framework were first built based on actual patient data and later exported to ANSYS software to implement the numerical analysis. For realistic analysis, the model considered the frictional contact between the RPD retainers with the teeth and mucosa with the resin denture base by applying the feature of small sliding. To ensure maximum longevity and suitability of restoration, two different metallic RPDs constructed from commercially pure titanium (CP Ti) and cobalt–chromium (Co-Cr) base materials were investigated within the proposed model. It was found that the highest stress value was seen within the Co-Cr framework followed by the titanium framework, particularly within the bar clasp under both loading directions. The principle abutment of the distal extension side carried the highest stress value under both RPD models in both loading cases. Also, it was found that the captured von Mises stress levels within the titanium bar clasps were lower than that in Co-Cr demonstrating both long durability and high flexibility of Ti clasps.

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Advancements in finite element analysis for prosthodontics

Wang,

Chen

2024

PMD

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Finite element analysis (FEA) is a computer-aided tool widely employed in the field of prosthodontics, offering a comprehensive understanding of biomechanical behavior and assisting in the design and evaluation of dental prostheses. By dividing a model into finite elements, FEA enables accurate predictions of stress, strain, and displacement of structures. This review summarizes recent research developments in the application of FEA across various aspects of prosthodontics, including dental implant, removable partial denture, fixed partial denture and their combinations. FEA plays a significant role in selecting restoration materials, optimizing prosthetic designs, and examining the dynamic interactions between prostheses and natural teeth. Its computational efficiency and accuracy have expanded its application potentials for preoperative planning in custom-made prosthodontics. Upon the physician’s assessment of the repair requirements tailored to the individual patient’s condition, FEA can be employed to evaluate the stress distribution, displacement, and other relevant outcomes associated with the proposed restoration. When integrated with clinical expertise, it facilitates assessing design feasibility, identifying necessary adjustments, and optimizing prosthetic solutions to mitigate the risk of failure. Additionally, FEA helps identify potential complications arising from long-term prosthetics use, allowing for the implementation of preventive strategies. Presenting FEA results to patients enhances their understanding of the scientific basis and rationale behind the design, thereby bolstering patient confidence in the proposed intervention. Despite its ongoing limitations, FEA underscores the importance of integrating computational findings with clinical judgment and supplementary diagnostic tools. This review emphasizes the growing role of FEA in advancing prosthodontics by offering computational analysis and design optimization, ultimately improving treatment outcomes and patient satisfaction.

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Stress distribution in tooth supported removable partial denture fabricated using two different materials: A 3-dimensional finite element analysis

Cited by 3 publications

References 6 publications

Biomechanics in Removable Partial Dentures: A Literature Review of FEA‐Based Studies

Biomechanics in Removable Partial Dentures: A Literature Review of FEA‐Based Studies

Finite element analysis of class II mandibular unilateral distal extension partial dentures

Advancements in finite element analysis for prosthodontics

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