Biomechanical evaluation of Chinese customized three-dimensional printed titanium miniplate in the Lefort I osteotomy: A finite element analysis

Li, Jiayi; Xie, Qiyue; Liu, Xiaohan; Jiao, Zixian; Chen, Yang

doi:10.1016/j.heliyon.2022.e12152

Cited by 5 publications

(9 citation statements)

References 35 publications

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“…In this study, the stress on the bone exhibited a concentration surrounding the screw hole in the L-shaped miniplate xation for both xation models. These results align with the ndings reported in the study conducted by Li et al [10]. Consequently, the increased concentration of Von Mises stresses in the cortical bone surrounding the screw-bone interface could potentially contribute to relapse [32].…”

Section: Discussionsupporting

confidence: 91%

“…Surgeons commonly use two 4-hole straight or Lshaped plates on each side to stabilize the mobilized maxilla su ciently. [16], [10]. While Le Fort I osteotomy is generally regarded as a stable procedure for maxillary advancement, several factors can negatively impact this stability.…”

Section: Discussionmentioning

confidence: 99%

“…The current study models included a combination of advancement with vertical changes at the maxilla's left side, making it less stable [28]. Although many studies compared the biomechanical behavior following Le Fort I osteotomy using different plate designs of either similar or different titanium material [10,15,22], this is the rst study on the biomechanical stability of Le Fort I advancement with vertical changes to correct maxillary canting following the same design and thickness for both 3D-printed TI6AL4V and commercial titanium miniplates under three different occlusal forces. The occlusal forces applied in our simulation referred to some previously published studies [10,15,30].…”

Section: Discussionmentioning

confidence: 99%

“…The conventional method of rigid internal xation (RIF) with titanium plates and screws has been established as the standard of care for achieving immediate and long-term stability [5][6][7][8]. RIF ensures proper intra-and post-operative alignment of the segments and facilitates postoperative healing by restoring the physiological mechanical conduction and preventing skeletal relapse due to force and biomechanical imbalance [9,10]. However, recent advances in 3D-printing technology have enabled the application of personalized titanium mini-plates that enhance the operational e ciency and accuracy of the maxillary segment positioning [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers can use FEA to analyze different plating techniques for treating facial fractures by generating virtual models to stimulate alternative treatment options [17,[19][20][21]. Previously published FEA studies compared L-shaped commercial titanium plates with different designs and thicknesses of titanium [10,15,22]. However, none of the previously published studies compared the biomechanical behavior of the same design L-shaped plate between TI6AL4V and commercial titanium.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Biomechanical Behavior Between Commercial and Patient-Specific TI6AL4V Titanium Plates of the Same Design Following Le Fort I Osteotomy: A 3D- Finite Element Analysis

Telha,

Wang,

Al-Watary

et al. 2023

Preprint

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Background: Le Fort I osteotomy is a common orthognathic procedure for treating patients with midface skeletal abnormalities. This study evaluates and compares the biomechanical behavior between the three-dimensional (3D) printed patient-personalized TI6AL4V mini plates with commercially made pure mini plates of the same size and design using finite element analysis. Methods: Le Fort I osteotomy with 5 mm advancement associated with mediolateral rotation of the maxilla on the sagittal plane creating a gap of 3 mm at the most posterior part of the left side model was virtually executed on 3D-model using Mimics software. Fixation methods were modeled using (software) to represent 3D-printed patient-personalized TI6AL4V and commercially titanium mini plates. Both fixation mini plates models had the same conventional 4-hole L-shape design with similar thicknesses of 0.5 mm and 0.7 mm and placement vectors at the piriform rims and the zygomaticomaxillary buttress, respectively. ANSYS R19.2 software (Canonsburg, Pennsylvania, U.S.) was employed to create computer-aided engineering finite element models and analyses. Stress distribution, strain behaviors, and displacements of the fixation mini-plates, total model, and the maxilla segment were analyzed after loading postoperative occlusal force of 125, 250 and 500 N/mm². Results: Le Fort I fixation with TI6AL4V L-shaped mini plates resulted in lower principal VM stress, strain, and displacement values than commercially made titanium L-shaped mini plates. The TI6AL4V fixation demonstrated a reduced displacement of the maxillary segment. Both fixation models showed the maximum VM stress, strain, and displacement values across the area where a vertical gap between the bony segment of the maxilla was created due to the downward rotation creating a posterior gap of 3mm at the left side of the maxilla. The maximum overall VM stresses of TI6AL4V mini plates were relatively higher than those observed in the commercial titanium mini plates. Conclusion: The maximum stress, strain, and segment displacement of both fixation models were predominantly concentrated in the area of the vertical gap. Notably, both fixation materials exhibited remarkably close values, which can be attributed to the similar design of the fixation plates used in both models.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%