Biomechanical stability analysis of rigid intraoral fixation for bilateral sagittal split osteotomy

Ming-Yih, Lee; Lin, Chun-Li; Wen-Da, Tsai; Lo, Lun-Chien

doi:10.1016/j.bjps.2008.11.057

Cited by 19 publications

(11 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous FEA studies have shown that bi-cortical screws exhibit less stress in the fixation when compared to miniplates (21,24,28,37,40,45). This is also true in the present study.…”

Section: Stress In Fixationssupporting

confidence: 86%

“…There is no consensus on which permutation or number of screws required and usually is surgeon preference. Although, some in-vitro and FEA studies have shown that the use of 3 bi-cortical screws in an inverted -L pattern is the more stable approach (20)(21)(22)(23)(24)(25)(26).…”

Section: Bi-cortical Screws Fixationmentioning

confidence: 99%

“…Maximum Displacement (mm) at 7mm mandibular advancement (39). Some studies considered isotropy in the mandible bone and did not include teeth in their models for simplicity (24,37). In 2016, Stringhini et al developed a full mandible model which included the cortical and cancellous bone, teeth, pulp, and periodontal tissues, which consisted of 1489170 elements (47).…”

Section: Comparison Of Displacements In Fixation Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Three Internal Fixation Techniques in Mandibular Sagittal Split Osteotomy, A Finite Element Analysis

Hassan

Stassen

Ring

2018

British Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

The sagittal split osteotomy is a versatile technique used in Mandibular orthognathic surgery. There are many types of internal fixation techniques available to provide fixation following the mandible split. The choice of fixation is mainly on surgeon preference, and can range from bi-cortical screws fixation and miniplate fixation. This study used Finite Element Analysis to investigate biomechanical properties of three internal fixation techniques. A pre-operative CT scan of a patient's skull was used to develop a half fully dentate mandible computer model. A sagittal split osteotomy was performed on the computer model and all fixation techniques applied to the model. Finite element analysis was used to study the effect of different fixation techniques on various mandibular movements and force magnitudes. The results of this study have shown consistently that the bi-cortical screws fixation records the least stress and displacement in all simulation models. Stress is mostly concentrated in the inferior-distal screw for the bi-cortical screws fixation whereas the stresses in miniplates are generally dissipated in the connector region of the plate. The 1.7mm miniplate was the least rigid fixation. The stresses in surrounding bone of the fixations were variable for each technique. Miniplate fixations had higher bone stresses in the setback movement but lower with mandibular advancements. Within the limitations of the study, the application of bi-cortical screws has shown to be the most rigid fixation, although with increased stresses in surrounding bone at mandibular advancements. The 1.7mm and 2.0mm miniplates are less rigid than the bi-cortical screws but handled stresses within the ultimate yield strength. Stress The force per unit area applied to an object. Von Mises Stress The equivalent tensile stress used to predict the yielding of materials, when they are placed under loads from different directions.

show abstract

“…Previous FEA studies have shown that bi-cortical screws exhibit less stress in the fixation when compared to miniplates (21,24,28,37,40,45). This is also true in the present study.…”

Section: Stress In Fixationssupporting

confidence: 86%

Section: Bi-cortical Screws Fixationmentioning

confidence: 99%

Section: Comparison Of Displacements In Fixation Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Three Internal Fixation Techniques in Mandibular Sagittal Split Osteotomy, A Finite Element Analysis

Hassan

Stassen

Ring

2018

British Journal of Oral and Maxillofacial Surgery

View full text Add to dashboard Cite

show abstract

“…For all cases in this study, fixation for BSSO was by way of 3 bi-cortical titanium screws, inserted at the upper border of alveolar ridge to prevent damage to the inferior alveolar nerve. It has been shown that screws placed in this triangular configuration (two above and one below the mandibular canal) results in less stress loading than other methods of rigid fixation, with a resulting improvement in stability (Erkmen et al, 2005;Ming-Yih et al, 2010).…”

Section: Discussionmentioning

confidence: 98%

An assessment of the quality of care provided to orthognathic surgery patients through a multidisciplinary clinic

Khattak

Benington

Khambay

et al. 2012

Journal of Cranio-Maxillofacial Surgery

View full text Add to dashboard Cite

“…Based on the stability criteria defined by von Mises, if the maximum tensile stress for each structure (bone or screw) is exceeded, the structure may fail. [14] In this context, the von Mises stress values on fixative appliances were predicted by means of 3D FEA. The highest values of von Mises stress are shown in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Biomechanical analysis of titanium fixation plates and screws in mandibular angle fractures

et al. 2016

View full text Add to dashboard Cite

show abstract

Biomechanical stability analysis of rigid intraoral fixation for bilateral sagittal split osteotomy

Cited by 19 publications

References 9 publications

Comparison of Three Internal Fixation Techniques in Mandibular Sagittal Split Osteotomy, A Finite Element Analysis

Comparison of Three Internal Fixation Techniques in Mandibular Sagittal Split Osteotomy, A Finite Element Analysis

An assessment of the quality of care provided to orthognathic surgery patients through a multidisciplinary clinic

Biomechanical analysis of titanium fixation plates and screws in mandibular angle fractures

Contact Info

Product

Resources

About