Comparison of biomechanical behaviour of maxilla following Le Fort I osteotomy with 2- versus 4-plate fixation using 3D-FEA

Erkmen, Erkan; Ataç, Mustafa Sancar; Yücel, Ertan; Kurt, Ahmet

doi:10.1016/j.ijom.2008.10.006

Cited by 21 publications

(14 citation statements)

References 28 publications

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“…Wang et al (11) found that the fixation of 6 miniplates provided sufficient stability to the level of the intact maxilla, and fixation with four miniplates could restore 90% of the bite force, but fixation with two miniplates produced the worst effects for the treatment of maxillary Lefort I fractures. Besides, Erkmen et al (15) also reported that 4-plate fixation following Lefort I advancement surgery exerted less stress on the maxillary bones and fixation materials than 2-plate fixation using three-dimensional finite element analysis. Uckan et al (16) have suggested that there was a great risk of plate fracture and screw deformation under incisor bite forces greater than 44N with two-plate fixation.…”

Section: Discussionmentioning

confidence: 99%

“…Finite element method can be used to calculate the stress and displacement of internal fixation and to display the internal structure in any section. Some applications of this method have been reported to analyze the effect of fixation (13)(14)(15)(16)(17).Therefore, the aim of our study was to evaluate the effects of bioabsorbable internal fixation devices on maxillary Lefort I fracture using biomechanical analysis model. We developed a three-dimensional finite element (3-D FE) model to evaluate the effects of five bioabsorbable internal fixations for the maxillary Lefort Ι fracture, including the number and strength of fixed plates and the stability of internal fixation in the different occlusions.…”

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confidence: 99%

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confidence: 99%

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Biomechanical evaluation of maxillary Lefort Ι fracture with bioabsorbable osteosynthesis internal fixation

Zhou

et al. 2014

Dent Traumatol

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The aim of this study was to apply biomechanical analysis model to evaluate the effects of bioabsorbable internal fixation devices on maxillary Lefort Ι fracture. CT scan technology and the finite element software (ansys) were used to establish three-dimensional finite element models of five resorbable internal fixation devices in maxillary Lefort Ι fractures. We used the model to calculate the stress of the upper jaw and internal fixation. We further analyzed the stability of fixation under four occlusions. The fixation using two bioabsorbable plates was not stable. The zygomaticomaxillary pillars fixation is more stable than other fixations. The stability of fracture fixation was influenced with the molar occlusion. The current study developed a functional three-dimensional finite element model of bioabsorbable internal fixation and compared the stability of five fixation methods for maxillary Lefort Ι fractures. The results would facilitate the application of bioabsorbable materials in dental clinic.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Biomechanical evaluation of maxillary Lefort Ι fracture with bioabsorbable osteosynthesis internal fixation

Zhou

et al. 2014

Dent Traumatol

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“…Vollmer et al 16 reported that FEA simulations were highly related to in vitro values using the mandibular model. FEA is known to be very useful in evaluating the stress and strain patterns in facial bone with its various functions and anatomies 17,18 . Alberts et al 19 studied the osseous strain pattern of the maxilla after Le fort I osteotomy and suggested that FEA had more advantages than the synthetic model analysis.…”

Section: Kyoung In Yun Et Al: a Comparison Of Fixation Methods Using mentioning

confidence: 99%

A comparison of fixation methods using three-dimensional finite element analysis following anterior segmental osteotomy

Yun

Park

et al. 2012

J Korean Assoc Oral Maxillofac Surg

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(J Korean Assoc Oral Maxillofac Surg 2012;38:332-6) Objectives: This study sought to evaluate fixation methods and determine the best method for the postoperative stabilization of maxillary osteotomy. For our analysis we performed a three-dimensional finite element analysis of stress distribution on the plate, screw, and surrounding bone, as well as displacement onto the plate. Materials and Methods: We generated a model using synthetic skull scan data; an initital surface model was changed to a solid model using software. Modified anterior segmental osteotomy (using Park's method) was made using the program, and four different types of fixation methods were used. An anterior load of 100 N was applied on the palatal surface of two central incisors. Results:The Type 1 (L-shaped) fixation method gave stresses of 187.8 MPa at the plate, 45.8 MPa at the screw, and 15.4 MPa at the bone around the plate. The Type 2 (I-shaped) fixation method gave stresses of 186.6 MPa at the plate, 75.7 MPa at the screw, and 13.8 MPa at the bone around the plate. The Type 3 (inverted L-shaped) fixation method gave stresses of 28.6 MPa at the plate, 29.9 MPa at the screw, and 15.3 MPa at the bone around the plate. The Type 4 (I-shaped) fixation method gave stresses of 34.8 MPa at the plate, 36.9 MPa at the screw, and 14.9 MPa at the bone around the plate. The deflection of the plates for the four fixation methods was 0.014 mm, 0.022 mm, 0.017 mm, and 0.018 mm, respectively. Conclusion: The Type 3 (inverted L-shaped) fixation method offers more stability than the other fixation methods. We therefore recommend this method for the postoperative stabilization of maxillary osteotomy.

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“…Currently, the known methods to evaluate the morphological bone adaptation are: the bone displacement direction by photorefractive holographic interferometry (Caroena et al, 2010), stress analysis in photoelastic method (Lima et al), press transducer (Popowics et al) and computer simulations using finite element analysis (FEA) (Ujigawa et al;Erkmen et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Biomechanics of the Human Canine Pillar Based on its Geometry Using Finite Element Analysis

et al. 2014

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of the human canine pillar based on its geometry using finite element analysis. Int. J. Morphol., 32(1):214-220, 2014. SUMMARY:This study evaluated the stress distribution based on the canine pillar geometry in human skull, using a finite element analysis. Computed tomography of human skull was used to build a finite element model, which was composed by all bony structures of canine pillar: canine eminence, canine fossa, frontal process of maxilla, glabellum and superciliary arch. A support on the bite contact of maxillary canine tooth and a resultant force of the masticatory muscles was applied in the simulation. Equivalent Von-mises and maximum principal stresses were analyzed along the structures that compose the canine pillar geometry. Von-mises stress presented high stress concentrated at the canine fossa and frontal process of maxilla. Maximum principal stress showed compression areas at the canine fossa and part of frontal process and tensile stress at canine eminence and part of the frontal process. In conclusion, the different stress areas means different force concentrations transmitted along the canine pillar geometry during a peak canine bite.

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Comparison of biomechanical behaviour of maxilla following Le Fort I osteotomy with 2- versus 4-plate fixation using 3D-FEA

Cited by 21 publications

References 28 publications

Biomechanical evaluation of maxillary Lefort Ι fracture with bioabsorbable osteosynthesis internal fixation

Biomechanical evaluation of maxillary Lefort Ι fracture with bioabsorbable osteosynthesis internal fixation

A comparison of fixation methods using three-dimensional finite element analysis following anterior segmental osteotomy

Biomechanics of the Human Canine Pillar Based on its Geometry Using Finite Element Analysis

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