Study on the reconstruction of a four-dimensional movement model and the envelope surface of the condyle in normal adults

Huang, Chang‐Hung; Xl, Xu; Ll, Li; Sun, Yi; Guo, CB

doi:10.1016/j.bjoms.2021.08.006

Cited by 2 publications

(11 citation statements)

References 24 publications

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“…Huang's method was used to further investigate this in the present study. In 34 healthy adults, the envelope surface showed two peaks, consistent with the Huang study [ 46 ]. The morphology of the two-peak was related to the condylar movement during mandibular border movements.…”

Section: Discussionsupporting

confidence: 85%

“…We developed a method to analyze condylar movements in the four dimensions using CBCT and movement data. The concept of envelope surface was first proposed in the studies of condylar movement [ 14 , 46 ]. Huang's method was used to further investigate this in the present study.…”

Section: Discussionmentioning

confidence: 99%

“…During 1–2 years of follow-up in patients who underwent unilateral TMJR using this system, 25% complained of discomfort due to excessive contralateral joint movements [ 59 ]. Our previous studies indicated that the 3D morphology of condylar movement may be used to design the artificial fossa [ 14 , 60 ]. The envelope surface may guide the movement of the condylar process.…”

Section: Discussionmentioning

confidence: 99%

“…Two splints were created to attach the anterior teeth in Geomagic Studio 2012 (3D Systems, Rock Hill, SC, USA) and printed using a 3D print machine (SHINO I; SHINO, China; nozzle diameter = 0.3 mm, thickness = 0.1 mm). Volunteers wearing splints with landmarks [ 14 ] performed mandibular border movements, including maximal opening, closing, protrusion, retrusion, and lateral movements to the left and right sides. The movement trajectory was measured at 120 Hz using the mandibular movement recording system PN300 with 0.01mm error (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…Besides, this method does not reflect the three-dimensional (3D) shape of the condylar process. We developed a method to analyze condylar movements in four dimensions using cone-beam computed tomography (CBCT) and movement recording data, with the conception of the condyle envelope surface, but this method requires further investigation [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Prediction of condylar movement envelope surface based on facial morphology

Chen¹,

Zhang

Jiang³

et al. 2023

Heliyon

Self Cite

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Prediction of condylar movement envelope surface based on facial morphology

Chen¹,

Zhang

Jiang³

et al. 2023

Heliyon

Self Cite

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Designing customized temporomandibular fossa prosthesis based on envelope surface of condyle movement: validation via in silico musculoskeletal simulation

Wang,

Chen

et al. 2023

Front. Bioeng. Biotechnol.

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Objective: This study presents an innovative articular fossa prosthesis generated by the envelope surface of condyle movement, and compares its mandible movements, muscle activities, and joint reaction forces with two temporomandibular joint (TMJ) prostheses using multibody musculoskeletal simulation.Methods: A healthy 23-year-old female was recruited for this study. Cone-beam computed tomographic (CBCT) was performed to reconstruct the mandibular bone geometry. A customized TMJ fossa prosthesis was designed based on the subject-specific envelope surface of condyle movement (ESCM). Mandibular kinematics and jaw-closing muscle electromyography (EMG) were simultaneously recorded during maximum jaw opening-closing movements. To validate our prosthesis design, a mandibular musculoskeletal model was established using flexible multibody dynamics and the obtained kinematics and EMG data. The Biomet fossa prosthesis and the ellipsoidal fossa prosthesis designed by imitating the lower limb prostheses were used for comparison. Simulations were performed to analyze the effects of different fossa prostheses on jaw opening-closing motions, mandibular muscle activation, and contact forces.Results: The maximum opening displacement for the envelope-based fossa prosthesis was greater than those for Biomet and ellipsoidal prostheses (36 mm, 35 mm, and 33 mm, respectively). The mandibular musculoskeletal model with ellipsoidal prosthesis led to dislocation near maximal jaw opening. Compared to Biomet, the envelope-based fossa reduced the digastric and lateral pterygoid activation at maximal jaw opening. It also reduced the maximal resistance to condylar sliding on the intact side by 63.2 N.Conclusion: A customized TMJ fossa prosthesis was successfully developed using the ESCM concept. Our study of musculoskeletal multibody modeling has highlighted its advantages and potential. The artificial fossa design successfully achieved a wider condylar range of motion. It also reduced the activation of jaw opening muscles on the affected side and resistance on the intact side. This study showed that an ESCM-based approach may be useful for optimizing TMJ fossa prostheses design.

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Study on the reconstruction of a four-dimensional movement model and the envelope surface of the condyle in normal adults

Cited by 2 publications

References 24 publications

Prediction of condylar movement envelope surface based on facial morphology

Prediction of condylar movement envelope surface based on facial morphology

Designing customized temporomandibular fossa prosthesis based on envelope surface of condyle movement: validation via in silico musculoskeletal simulation

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