Effect of region-dependent viscoelastic properties on the TMJ articular disc relaxation under prolonged clenching

García, Natalia Tielve; Pelayo, F.; Tanaka, Eiji; Barrientos, Eva; Lamela-Rey, María Jesús; Fernández‐Canteli, Alfonso; Vicente, Juan Carlos de

doi:10.1016/j.jmbbm.2021.104522

Cited by 3 publications

(4 citation statements)

References 40 publications

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“…The individual design is analysed with only the biting force, assuming that the contribution of muscle forces on the mastication after removing the condyle head is significantly less. 16 The disc is subjected to compressive load, and hence according to previous study the anisotropic property is not considered. 19 This study is based on the CT Scan data from a healthy patient, and the interindividual differences in muscle force distribution, anatomy, and physiology are not considered.…”

Section: Discussionmentioning

confidence: 99%

“…1 The stress analysis on the TMJ disc using finite element analysis showed a significant reduction in the stresses from the mandible to fossa. 16,19 The maximum stress at mandibular cartilage is double to that at the articular cartilage. The implants designed in this study to replace the broken mandible also reduce the stress by 40% and are hence considered suitable for total TMJR.…”

Section: Discussionmentioning

confidence: 99%

“…According to previous studies, a reference point was selected, and necessary displacements at each defined angle were selected such that only 10% compression strain was applied. Three different angles were assigned for the medio-lateral direction and anterior-posterior, paradigmatic to the mandible movement about the TMJ 16 (Table 2).…”

Section: Methodsmentioning

confidence: 99%

“…13,14 It distributes the compressive stress prevailing during the masticatory movements. [15][16][17] The study has assigned a non-linear viscoelastic property to the TMJ disc during the finite element analysis (FEA) to compare the stress distribution (Figure 2(a)).…”

Section: Introductionmentioning

confidence: 99%

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Influence of implant parameters on biomechanical stability of TMJ replacement: A finite element analysis

et al. 2022

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The articular disc reduces the stress distribution from the mandible to fossa. In total temporomandibular joint (TMJ) replacement, the implant is required to reduce the stress on fossa implant. Current studies lack standard and optimized parameters for the cylindrical dome on Christensen TMJ implant collar. This study briefed a novel TMJ implant head design and investigates the biomechanical behaviour by considering the articular disc. The radius of the head was varied with the height of the cylinder height to obtain the design of the experiment and the stress distribution was compared with an intact mandible-articular disc model by considering the viscoelastic property of the TMJ disc. The model was simulated at three different angles: 20°, 0° and −20° in the mediolateral direction to simulate the manducation. FEA analysis showed high stresses at the circular heads, and high strength is achieved with increased implant cylinder length and diameter. The results also showed a stress reduction of 50% on the fossa from the mandible. Hence, the newly designed head and suggested modifications may be used as a reference for further clinical improvement of Christensen TMJ as well as other TMJ implants.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of implant parameters on biomechanical stability of TMJ replacement: A finite element analysis

et al. 2022

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Biomechanical effects of high acceleration on the temporomandibular joint

Luo

Shu

2021

Computer Methods in Biomechanics and Biomedical Engineering

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Fracture Toughness of Ovine TMJ Disc: Effects of Crack Length and Orientation

Salehipour,

Hashemi

2024

Preprint

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The human mandible experiences mechanical stress from several directions as a result of activities such as speaking, chewing, and other everyday actions. The TMJ disc facilitates mandibular motion and absorbs all of the stresses associated with daily activities. Thus, the TMJ disc is likely to be susceptible to rupture. Hence, it is crucial to investigate its susceptibility to failure and rupture. The aim of this study was to determine the impact of fracture orientation, sample thickness, and crack-to-width ratio on the amount of energy needed to cause the growth of flaws on the disc. Fracture toughness was investigated by conducting cyclic tensile testing on 40 ovine TMJ discs in two different notch orientations: anteroposterior and mediolateral. The J-integral was chosen as a measure of the critical fracture energy of the TMJ disc. The Shapiro-Wilk test showed that fracture toughness data did not follow a normal distribution (P-value < 0.05). Due to unequal variances, the Kruskal-Wallis test was used to examine the data. The study revealed that the fracture toughness in the anteroposterior direction was much higher than that of the mediolateral, indicating a superior ability to resist tearing and fracture in the anteroposterior direction. Furthermore, the study's findings revealed that both the direction of the crack and its initial crack-to-width ratio influenced the TMJ disc's fracture toughness. The study also evaluated TMJ disc failure patterns to better understand its pathophysiology. The results showed that the crack growth profile in two orientations has a completely different structure. The 2D finite element analysis results also indicated a significant relationship between the fracture toughness and the percentage of cracks, demonstrating that increasing the crack-to-width ratio leads to a rise in fracture toughness. These findings help understand TMJ injuries to the disk and develop better treatments.

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Effect of region-dependent viscoelastic properties on the TMJ articular disc relaxation under prolonged clenching

Cited by 3 publications

References 40 publications

Influence of implant parameters on biomechanical stability of TMJ replacement: A finite element analysis

Influence of implant parameters on biomechanical stability of TMJ replacement: A finite element analysis

Biomechanical effects of high acceleration on the temporomandibular joint

Fracture Toughness of Ovine TMJ Disc: Effects of Crack Length and Orientation

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