Effect of bar material on the biomechanical performance of hybrid dental prosthesis

Shash, Yomna H.; Dohiem, Mohamed M.; El-Wakad, Mohamed T.

doi:10.1109/niles53778.2021.9600489

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Additionally, the stresses and strains on cortical and cancellous bones were reduced. These findings were in close agreement with the studies [6,7,46,47]. In Shash et al research [46], a mandibular model with a fixed prosthesis was constructed with titanium implants and abutments, and then the framework was stimulated with different materials, among them the PEEK.…”

Section: Discussionsupporting

confidence: 87%

“…These findings were in close agreement with the studies [6,7,46,47]. In Shash et al research [46], a mandibular model with a fixed prosthesis was constructed with titanium implants and abutments, and then the framework was stimulated with different materials, among them the PEEK. The results clarified that the PEEK framework reduced the stresses on cortical and cancellous bones by 3.44 and 3%, compared to titanium.…”

Section: Discussionsupporting

confidence: 87%

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Finite-Element Analysis of the Effect of Utilizing Various Material Assemblies in “All on Four” on the Stresses on Mandible Bone and Prosthetic Parts

Shash

El-Wakad

Eldosoky

et al. 2022

International Journal of Polymer Science

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Background. Fixed prostheses often utilize the “All-on-four” technique, in which four implants are inserted into the jaw bone, and a framework supports them. Titanium is usually used in the fabrication of “All-on-four” parts, due to its superior mechanical properties; however, it has drawbacks such as aesthetic impairment, casting issues, stress shielding, and incompatibility with imaging techniques. These drawbacks have motivated researchers to find alternative materials such as polymers. Recently, the new polymeric material PEEK has a major role in most areas of dentistry, and therefore, it can represent an alternative biomaterial to overcome the drawbacks of titanium. The density of bone is expected to influence the choice of “All-on-four” materials. Purpose. This research applied finite-element investigations to evaluate the stresses on bone tissues and prosthetic parts in “All on four,” utilizing three assemblies of materials, in normal and low bone densities. These assemblies were titanium (Type 1), titanium/PEEK (Type 2), and PEEK (Type 3). Materials and Methods. A 3D Mandibular model was constructed with a fixed prosthesis, and three assemblies of materials were stimulated, under 300 N unilateral force. The von Mises stresses were computed for the prosthetic parts and mucosa, while the maximum and minimum principal stresses/strains were computed for bone tissues due to their brittle and ductile properties. Moreover, the displacements of implants were extracted to check the prosthesis stability. Results. Type 2 and Type 3 minimized the stresses on frameworks, implants, abutments, and bone tissues, however, increased the mucosal stress, in comparison to Type 1. In the low-density model, Type 3 was recommended to reduce the stresses/strains on bone tissues and decrease the implant displacement, avoiding bone failure and increasing prosthesis stability. Conclusions. The bone density influenced the choice of “All-on-four” assembly. Moreover, further research on PEEK implants and abutments is required in the future.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 87%

Finite-Element Analysis of the Effect of Utilizing Various Material Assemblies in “All on Four” on the Stresses on Mandible Bone and Prosthetic Parts

Shash

El-Wakad

Eldosoky

et al. 2022

International Journal of Polymer Science

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Evaluation of stress and strain on mandible caused using “All-on-Four” system from PEEK in hybrid prosthesis: finite-element analysis

et al. 2022

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Hybrid prostheses have recently been used as suitable treatment alternatives for edentulous individuals to restore the mastication mechanism. These prostheses utilize “All on four” concept, in which four implants are inserted into the jaw bone, and supported by a bar. Titanium is usually used in the fabrication of “All on four” parts due to its good mechanical properties. However, it has many drawbacks including esthetic impairment, casting issues, hypersensitivity reactions, stress shielding, and incompatibility with imaging techniques. These drawbacks have prompted researchers to find alternative materials (e.g., polymers). Recently, the new polymeric material PEEK has a major role in dentistry, due to its biocompatibility, shock-absorbing ability, and good mechanical properties. This work used the finite-element method to conduct stress–strain analysis on mandible rehabilitated with a hybrid prosthesis, using PEEK in the fabrication of “All on four” parts instead of titanium, using different densities of spongy bone. As the density of spongy bone is expected to influence the choice of “All on four” fabrication material. A 300 N vertical force was applied unilaterally, bilaterally, and anteriorly to stimulate the different mastication mechanisms. The results illustrated that PEEK material reduced the stresses and strains on bone tissues and increased the mucosal stress, compared to titanium. Consequently, this material was recommended to be used in the fabrication of “All on four” parts, especially in the low-density model. However, further research on PEEK implants and abutments is required in near future.

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Exploring polyetheretherketone in dental implants and abutments: A focus on biomechanics and finite element methods

Hanna,

Amine,

Prasad

et al. 2024

Reviews on Advanced Materials Science

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This review article investigates the properties and applications of polyetheretherketone (PEEK) in the field of dental implantology. PEEK has emerged as a significant material of interest due to its mechanical strength, biocompatibility, and radiolucency. The article provides a detailed examination of PEEK’s biocompatibility and the various reinforcements that enhance its performance, including PEEK/HA, PEEK/β-TCP–TiO2, and CFR-PEEK. Focusing on dental applications, we discuss PEEK’s use in implant abutments, fixed dental prostheses, implants, and its commercial forms available for dental use. Further, the mechanical behavior of PEEK and its composites is analyzed, including its elastic behavior under various stress conditions and wear resistance. Moreover, the article conducts an integrative systematic review on the stress distribution in dental implants or abutments made from reinforced PEEK composites, assessed through finite element analysis. The aim of this review is to provide insights into the current state of research, the benefits, challenges, and future prospects of PEEK in implantology, and the biomechanical evaluation methods that underpin the development of this promising material.

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Effect of bar material on the biomechanical performance of hybrid dental prosthesis

Cited by 3 publications

References 2 publications

Finite-Element Analysis of the Effect of Utilizing Various Material Assemblies in “All on Four” on the Stresses on Mandible Bone and Prosthetic Parts

Finite-Element Analysis of the Effect of Utilizing Various Material Assemblies in “All on Four” on the Stresses on Mandible Bone and Prosthetic Parts

Evaluation of stress and strain on mandible caused using “All-on-Four” system from PEEK in hybrid prosthesis: finite-element analysis

Exploring polyetheretherketone in dental implants and abutments: A focus on biomechanics and finite element methods

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