Functionally graded ceramics (FGC) dental abutment with implant-supported cantilever crown: Finite element analysis

Ouldyerou, Abdelhak; Merdji, Ali; Aminallah, L.; Mehboob, Hassan; Mehboob, Ali; Roy, Sandipan; Goswami, Tarun; Mukdadi, Osama M.; Tarlochan, Faris

doi:10.1016/j.coco.2023.101514

Cited by 16 publications

(5 citation statements)

References 32 publications

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“…Thus, finite element methods have been used to study and simulate bone remodeling phenomena [28][29][30][31][32]. This tool is increasingly popular in biomechanics [33][34][35][36][37][38] for obtaining stress and strain prediction in the host bones.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Investigation of Patient-Specific Porous Dental Implants: A Finite Element Study

2023

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The design of the implant and osseointegration play an important role in the long-term stability of implants. This study aims to investigate the impact of porous implants on full and partial osseointegration in varying bone qualities. Finite element models of porous implants were modeled and assembled with normal and weak bones considering full and partial osseointegration. These assemblies were simulated under an occlusal load of 200 N when the outer surfaces of bones were fixed in all directions. The results showed that in the case of full osseointegration, the stresses in surrounding bones were increased with decreasing implant stiffness, while decreased in partial osseointegration. Moreover, the maximum octahedral shear strain in the weak bone exceeded 3000 µε in all the cases but decreased (from 7256 to 3632 µε) with decreasing implant stiffness. According to the mechanostat hypothesis, using porous implants in normal bone may enhance bone density in full osseointegration, while susceptivity of bone damage may reduce in weak bones using porous implants. Thus, careful selection of implant material and design based on the patient’s specific bone quality is crucial for successful outcomes.

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Section: Introductionmentioning

confidence: 99%

Biomechanical Investigation of Patient-Specific Porous Dental Implants: A Finite Element Study

2023

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“…determining the stress experienced by enamel and dentin tissues. In contrast, with the composite materials with different Young's moduli (26,22,18,14,10 GPa), we noticed that stresses were higher with the lowest Young's modulus (10 GPa), as we increased Young's modulus (26 GPa), the stress was decreased in the enamel and dentin. Additionally, it is worth mentioning that all stress levels observed in the restored tooth were lower in comparison to the tooth affected by the cavity.…”

Section: Plos Onementioning

confidence: 65%

“…In bioengineering, finite element analyses (FEA) have been widely used [18][19][20][21]. FEA can give freedom for researchers to design cavities and consider various restorative materials to investigate their biomechanical performances.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical performance of resin composite on dental tissue restoration: A finite element analysis

Ouldyerou,

Mehboob,

Mehboob

et al. 2023

PLoS ONE

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This study investigates the biomechanical performance of various dental materials when filled in different cavity designs and their effects on surrounding dental tissues. Finite element models of three infected teeth with different cavity designs, Class I (occlusal), Class II mesial-occlusal (MO), and Class II mesio-occluso-distal (MOD) were constructed. These cavities were filled with amalgam, composites (Young’s moduli of 10, 14, 18, 22, and 26 GPa), and glass carbomer cement (GCC). An occlusal load of 600 N was distributed on the top surface of the teeth to carry out simulations. The findings revealed that von Mises stress was higher in GCC material, with cavity Class I (46.01 MPa in the enamel, 23.61 MPa in the dentin), and for cavity Class II MO von Mises stress was 43.64 MPa, 39.18 MPa in enamel and dentin respectively, while in case of cavity Class II MOD von Mises stress was 44.67 MPa in enamel, 27.5 in the dentin. The results showed that higher stresses were generated in the non-restored tooth compared to the restored one, and increasing Young’s modulus of restorative composite material decreases stresses in enamel and dentin. The use of composite material showed excellent performance which can be a good viable option for restorative material compared to other restorative materials.

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“…The finite element model consists of 11,807,170 tetra4 solids elements and 1,374,437 tria3 shell elements (Table 1 ), for an average element size of 0.5 mm. The model is defined as linear elastic, homogeneous and isotropic [ 14 , 15 , 25 ]. The material properties are listed in Table 1 [ 24 , 26 ].…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, there is no existing standardized mechanical experimental method [ 1 , 6 ]. Finite element analysis is a powerful tool for orthopedic biomechanical research [ 14 , 15 ]. Kocsis [ 16 ], Bignardi et al [ 17 ], Hedelin et al [ 18 ], Zhang et al [ 19 ] and Lei et al [ 20 ] construct three-dimensional model of bone and fracture internal fixation based on CT data and numerical simulation is carried out, which is low cost, high repeatability and accurate results, but involves the problem of how to validate the finite element model and the applied loading.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical evaluation of a healed acetabulum with internal fixators: finite element analysis

et al. 2023

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Background Treatment of complicated acetabular fracture with internal fixation usually has high risk of failure because of unbefitting fixation. However, evaluation of the biomechanical effect of internal fixation under physiological loading for fracture healing is still generally rarely performed. The purpose of this study is to analyze the biomechanical characteristics of a healed acetabulum with designed internal fixators under gait and to explore the biomechanical relationship between the healed bone and the internal fixator. Methods A patient-specific finite element model of whole pelvis with designed internal fixators was constructed based on the tomographic digital images, in which the spring element was used to simulate the main ligaments of the pelvis. And the finite element analysis under both the combination loading of different phases and the individual loading of each phase during the gait cycle was carried out. The displacement, von Mises stress, and strain energy of both the healed bone and the fixation were calculated to evaluate the biomechanical characteristics of the healed pelvis. Results Under the combination loading of gait, the maximum difference of displacement between the left hip bone with serious injury and the right hip bone with minor injury is 0.122 mm, and the maximum stress of the left and right hemi-pelvis is 115.5 MPa and 124.28 MPa, respectively. Moreover, the differences of average stress between the bone and internal fixators are in the range of 2.3–13.7 MPa. During the eight phases of gait, the stress distribution of the left and right hip bone is similar. Meanwhile, based on the acetabular three-column theory, the strain energy ratio of the central column is relatively large in stance phases, while the anterior column and posterior column of the acetabular three-column increase in swing phases. Conclusions The acetabular internal fixators designed by according to the anatomical feature of the acetabulum are integrated into the normal physiological stress conduction of the pelvis. The design and placement of the acetabular internal fixation conforming to the biomechanical characteristics of the bone is beneficial to the anatomical reduction and effective fixation of the fracture, especially for complex acetabular fracture.

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Functionally graded ceramics (FGC) dental abutment with implant-supported cantilever crown: Finite element analysis

Cited by 16 publications

References 32 publications

Biomechanical Investigation of Patient-Specific Porous Dental Implants: A Finite Element Study

Biomechanical Investigation of Patient-Specific Porous Dental Implants: A Finite Element Study

Biomechanical performance of resin composite on dental tissue restoration: A finite element analysis

Biomechanical evaluation of a healed acetabulum with internal fixators: finite element analysis

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