Mechanical characteristics of the mandible after bilateral sagittal split ramus osteotomy: Comparing 2 different fixation techniques

Chuong, C. J.; Borotikar, Bhushan; Schwartz-Dabney, Carina; Sinn, Douglas P.

doi:10.1016/j.joms.2003.12.045

Cited by 63 publications

(41 citation statements)

References 18 publications

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“…As reported by various researchers, using rigid fixation techniques after bilateral sagittal split ramus osteotomy will optimize the stability, but this stability is not influenced by this rigid fixation method, although the most commonly suggested technique is bicortical screws in inverted-L position (6,21,(28)(29)(30)(31)(32)(33). Furthermore, rigid fixation will facilitate positioning and stabilizing of the proximal segment, which is an important factor of early relapse.…”

Section: Discussionmentioning

confidence: 99%

The Effect of the Mandibular Fixation Method after Bilateral Sagittal Split Ramus Osteotomy on Postoperative Stability: A Literature Review

Yaripoor¹,

Janbaz²

2016

Avicenna J Dent Res

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Context: Using a reliable fixation method after ramus sagittal split osteotomy in order to reduce the chances of treatment relapse and condyle changes is still one of the most noteworthy issues discussed among maxillofacial surgeons. In this study, the results of the up-to-date papers were collected, which identify the effects of the fixation method on the post-operative results, to give the reader a comprehensive view of the new concepts. Evidence Acquisition: The most frequent mandibular surgeries, setbacks, and advancements via the bilateral sagittal split osteotomy technique were used for a literature search due to the abundance of related articles. Consequently, the following keywords were applied: sagittal split ramus osteotomy, orthognathic surgery, rigid fixation, non-rigid fixation, postoperative relapse, and postoperative stability. Results: The articles were classified according to the surgery procedure: mandibular advancement surgery or mandibular setback surgery. The relapse pattern can be divided into two categories: an early relapse, which is strongly related to the surgery procedure, and a late relapse, which can be attributed to the physiologic changes, such as a growth map. The contributing factors can be considered to be the following: a change in ramus in inclination, the mandibular plane, and the fixation type. Conclusions: Using rigid fixation techniques after bilateral sagittal split ramus osteotomy will optimize the stability, but this stability is not influenced by the method of this rigid fixation; although the most commonly suggested technique, bicortical screws, is in the inverted-L position

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Section: Discussionmentioning

confidence: 99%

The Effect of the Mandibular Fixation Method after Bilateral Sagittal Split Ramus Osteotomy on Postoperative Stability: A Literature Review

Yaripoor¹,

Janbaz²

2016

Avicenna J Dent Res

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“…Regarding the difference in post-surgical stability and sagittal relapse between these two fixation methods, many studies have demonstrated that BCO can stand a much higher force than MCO 5,10,18,25 . Several clinical comparison studies 3,19 , including this study, failed to show a difference in sagittal mandibular relapse rate between BCO and MCO.…”

Section: Discussionmentioning

confidence: 99%

“…The results demonstrated that the 2.0 mm titanium screws were able to withstand a maximum masticatory force of 167.5 N, but the miniplate with mono-cortical screws fixation tolerated a maximum of 124.6 N. The authors explained that there is no conspicuous clinical difference because the muscle force 6 weeks after surgery is only 65 AE 43 N. CHUONG et al 5 used a three-dimensional FE computer modelling technique to simulate BSSO stabilization with two fixation techniques (screw and plate fixation). The results indicated that using three bi-cortical titanium screws leads to smaller deflections at the central incisor, suggesting higher mechanical stability.…”

mentioning

confidence: 99%

The stability of mandibular prognathism corrected by bilateral sagittal split osteotomies: a comparison of bi-cortical osteosynthesis and mono-cortical osteosynthesis

Hsu

Huang

Chen

et al. 2012

International Journal of Oral and Maxillofacial Surgery

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“…The plates were fixed to the bone with screws. Perfect adaptation between plate holes and screws through which it was mounted as well as the screw and hosting bone with no slippage at their interfaces was assumed [8]. The bone fragments were assumed to be in perfect contact with each other after repositioning and plate fixation.…”

Section: Fracture Site Creation and Bridging With Mini-platesmentioning

confidence: 99%

Comparison of Stability of Fracture Segments in Mandible Fracture Treated with Different Designs of Mini-Plates Using FEM Analysis

Joshi

Kurakar

2013

J. Maxillofac. Oral Surg.

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Aim To compare the displacement gap of mandible fracture segments treated with different designs of miniplates under various loading conditions. Materials and Methods Fracture in the body of mandible was bridged with 15 different designs and configuration of titanium mini-plates. Bite forces were applied at 3 locations, ipsilateral fractured side, contra lateral side and incisor site. 3D finite element methods (FEM) model of mandible was generated using 10 nodal tetrahedral elements. A commercial FE solver was used to solve bone inter fragmentary displacement during loading. Results Superior position of mini-plates produced better stability than inferior position. Positive bending moments can be reduced by larger plate in lower border in 2 plate system. Results of X mini-plate are comparable to 2 plate configuration. If length of middle portion of plate increased, stability decreased. Number of screws did not affect fracture stability. Conclusion Finite element methods analysis is used to determine the gap between mandible fragments which is otherwise impossible to measure clinically. The results obtained from this study offered us a choice of mini-plate design and configuration for clinical application.

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Mechanical characteristics of the mandible after bilateral sagittal split ramus osteotomy: Comparing 2 different fixation techniques

Cited by 63 publications

References 18 publications

The Effect of the Mandibular Fixation Method after Bilateral Sagittal Split Ramus Osteotomy on Postoperative Stability: A Literature Review

The Effect of the Mandibular Fixation Method after Bilateral Sagittal Split Ramus Osteotomy on Postoperative Stability: A Literature Review

The stability of mandibular prognathism corrected by bilateral sagittal split osteotomies: a comparison of bi-cortical osteosynthesis and mono-cortical osteosynthesis

Comparison of Stability of Fracture Segments in Mandible Fracture Treated with Different Designs of Mini-Plates Using FEM Analysis

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