Biomechanical study of mandibular osteosynthesis

Champy, M; Loddé, J P; Muster, D.; Jaeger, JH; Schmidt, Robert

doi:10.1016/0021-9290(80)90271-7

Cited by 8 publications

(17 citation statements)

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“…Fixation with plates and screws at the mandible is used as gold-standard in patients with fractures (Champy et al, 1978;Sauerbier et al, 2008;Munante-Cardenas et al, 2015) and segmental resections due to tumors or osteonecrosis (Evans et al, 1995;Shaw et al, 2004;Isler et al, 2018;Rendenbach et al, 2018). Mandible fractures account for around 50% of all maxillofacial injuries (Odom and Snyder-Warwick, 2016) and may compromise mandibular mechanics, function, and facial esthetics.…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Assessment of the Validity of Sheep as a Preclinical Model for Testing Mandibular Fracture Fixation Devices

Orassi

Duda

Heiland

et al. 2021

Front. Bioeng. Biotechnol.

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Mandibular fracture fixation and reconstruction are usually performed using titanium plates and screws, however, there is a need to improve current fixation techniques. Animal models represent an important step for the testing of new designs and materials. However, the validity of those preclinical models in terms of implant biomechanics remains largely unknown. In this study, we investigate the biomechanics of the sheep mandible as a preclinical model for testing the mechanical strength of fixation devices and the biomechanical environment induced on mandibular fractures. We aimed to assess the comparability of the biomechanical conditions in the sheep mandible as a preclinical model for human applications of fracture fixation devices and empower analyses of the effect of such defined mechanical conditions on bone healing outcome. We developed 3D finite element models of the human and sheep mandibles simulating physiological muscular loads and three different clenching tasks (intercuspal, incisal, and unilateral). Furthermore, we simulated fractures in the human mandibular body, sheep mandibular body, and sheep mandibular diastema fixated with clinically used titanium miniplates and screws. We compared, at the power stroke of mastication, the biomechanical environment (1) in the healthy mandibular body and (2) at the fracture sites, and (3) the mechanical solicitation of the implants as well as the mechanical conditions for bone healing in such cases. In the healthy mandibles, the sheep mandibular body showed lower mechanical strains compared to the human mandibular body. In the fractured mandibles, strains within a fracture gap in sheep were generally not comparable to humans, while similar or lower mechanical solicitation of the fixation devices was found between the human mandibular body fracture and the sheep mandibular diastema fracture scenarios. We, therefore, conclude that the mechanical environments of mandibular fractures in humans and sheep differ and our analyses suggest that the sheep mandibular bone should be carefully re-considered as a model system to study the effect of fixation devices on the healing outcome. In our analyses, the sheep mandibular diastema showed similar mechanical conditions for fracture fixation devices to those in humans.

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Section: Introductionmentioning

confidence: 99%

Biomechanical Assessment of the Validity of Sheep as a Preclinical Model for Testing Mandibular Fracture Fixation Devices

Orassi

Duda

Heiland

et al. 2021

Front. Bioeng. Biotechnol.

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“…The disadvantages of these plates are it is dif icult to adapt, bulkier, nerve injury due to different oral approach. Champy et al (1980) de ined the concept of "Ideal line of Osteosynthesis". This technique was performed with monocortical screws without compression, and ixation was done using mini plates (Figure 1).…”

Section: Rigid Fixationmentioning

confidence: 99%

“…The advantages of using these plates are relatively thin, can be done by intraoral approach, easy to adapt, easy to place. Champy et al (1980); Luhr (1987) found that these conventional mini plates were not stable enough to withstand forces which necessitated the need of the IMF.…”

Section: Rigid Fixationmentioning

confidence: 99%

3-Dimensional Plates Versus Conventional Mini plates in Maxillofacial Trauma- A Review

Ramasubbu¹,

Gaur²,

Thota³

et al. 2020

ijrps

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Maxillofacial trauma is any physical injury to the facial bones. Facial bones are frequently fractured bones in RTA, Assault, Domestic violence etc. Facial trauma includes Maxillary fractures, Mandibular fractures, Orbital Fractures, Nasal Bone Fractures, soft tissue injury such as lacerations, bruises etc. Over the years, there are many refinements in the management of maxillofacial trauma. The incidence of maxillofacial trauma is more in males because they are involved in more physical activities and assault compared to women. In Older times for facial bone fractures, surgeons performed maxillomandibular fixation using wire osteosynthesis for minimum three weeks to 6 weeks, and mouth opening was difficult, poor oral hygiene leading to periodontal problems, difficulty in speech and masticatory functions. The management of maxillofacial trauma includes the use of Maxillomandibular fixation using wire osteosynthesis, conventional mini plates and 3-D plates. For the management of facial bone fractures, Maxillofacial surgeons perform open reduction and internal fixation(ORIF) whenever needed. In the case of ORIF, Surgeons use mini plates either 3D or Conventional Plates for stabilising the fractured segments. This technique requires skill and experience and is also expensive. The advantages of this method are improved quality of life. The objective of this review is to compare 3-Dimensional plates and Conventional Plates in Maxillofacial trauma.

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“…In the mandibular angle region, this line indicates that a plate might be placed either along or just below the external oblique line of the mandible. 6,17,18 There are controversies in the number of miniplates used in angle fixation. Champy and colleagues showed that using one miniplate along the external oblique ridge is sufficient, 5,6 whereas Kroon et al demonstrated that the mandibular inferior border needs one more plate to counteract inferior distraction of the lower mandibular margin caused by loading forces near the fracture line.…”

mentioning

confidence: 99%

Transoral Miniplate Fixation of Mandibular Angle Fracture with and without 2 Weeks of Maxillomandibular Fixation: A Clinical Trial Study

Khiabani

Mehmandoost

2013

Craniomaxillofacial Trauma & Reconstruction

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Background and Objectives The ideal line of osteosynthesis in mandibular angle fractures indicates that a plate might be placed either along or just below the external oblique ridge. Some authors believe that using one miniplate at this line at the mandibular angle region provides sufficient strength to stabilize the fracture but others imply a second plate is required. Such controversies exist in the use of maxillomandibular fixation (MMF). The intention of the present study was to compare efficiency and complications of using one miniplate with and without MMF in mandibular angle fractures. Methods and Materials Forty patients with facial trauma with mandibular angle fractures including displaced and unfavorable fractures were categorized into two groups of 20 persons. In all patients, one miniplate was placed on the external oblique ridge. In the first group, patients had light maxillomandibular elastic bands just after surgery but no rigid MMF. In the second group, patients had rigid MMF for 2 weeks after surgery. Patients were followed to evaluate complications and treatment efficiency. Conclusions Our study showed that use of a single miniplate in the external oblique ridge is a functionally stable treatment for all types of angle fractures (including displaced and unfavorable fractures) except comminuted and long oblique fractures, which were not included in our study. Use of postoperative MMF did not improve the results.

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Biomechanical study of mandibular osteosynthesis

Cited by 8 publications

References 0 publications

Biomechanical Assessment of the Validity of Sheep as a Preclinical Model for Testing Mandibular Fracture Fixation Devices

Biomechanical Assessment of the Validity of Sheep as a Preclinical Model for Testing Mandibular Fracture Fixation Devices

3-Dimensional Plates Versus Conventional Mini plates in Maxillofacial Trauma- A Review

Transoral Miniplate Fixation of Mandibular Angle Fracture with and without 2 Weeks of Maxillomandibular Fixation: A Clinical Trial Study

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