Maxillary Fragment Stabilization After Le Fort I Fracture With 1 Screw Pair per Plate

Knežević, Predrag; Grgurević, Lovro; Uglešić, Vedran; Grgurević, Jakša; Drvar, Nenad; Kodvanj, Janoš

doi:10.1016/j.joms.2010.02.049

Cited by 3 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for choosing the von Mises stress measure for the mini-plate is that von Mises stress is accepted as the fracture criterion for metal materials based on elastic mechanics (Cox et al 2003;Knežević et al 2011). The mini-plate material is CP titanium grade IV and its corresponding yield strength is 480 MPa.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical interactions of different mini-plate fixations and maxilla advancements in the Le Fort I Osteotomy: a finite element analysis

Huang

Lin

2016

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

This study investigates the biomechanical interaction of different mini-plate fixation types (shapes/sizes and patterns) with segmental advancement levels on the Le Fort I osteotomy using the non-linear finite element (FE) approach. Nine models were generated under a standard 1-piece LeFort I osteotomy for advancement with 3, 6 and 9 mm distances and four mini-plates with three fixation patterns including LL, LI, and II patterns placed on the maxillae models by integrating computed tomography images and computer-aided design system. The axial and oblique occlusal forces were 250 N applied to each premolar/molar and 125 N applied at 30° inclination to the tooth long axis and from palatal to buccal, respectively. The relative micro-movement values between the two maxillary bone segments and maximum mini-plate stress increased obviously with maxilla advancement increment and the increasing trend can be fitted by exponential curve. The corresponding values in II mini-plate fixation presented apparently high values in all simulated cases. The mini-plate stress concentration locations were found at the bending regions to increase high fracture risk. The mini-plate yield strength can be mapped to a critical (limited) advancement for three types of fixations for safe consideration. This study concluded that L-shaped mini-plates with lateral fixation are recommended to provide better stability. The risk for mini-plate fracture and bone relapse increases when maxillary advancement is larger than a critical value of 5 mm in the Le Fort I osteotomy.

show abstract

Section: Discussionmentioning

confidence: 99%

Biomechanical interactions of different mini-plate fixations and maxilla advancements in the Le Fort I Osteotomy: a finite element analysis

Huang

Lin

2016

Computer Methods in Biomechanics and Biomedical Engineering

View full text Add to dashboard Cite

show abstract

“…Internal fixation using titanium miniplate osteosynthesis is a surgical modality proven valuable for treatment of severe maxillofacial trauma in people and dogs . This approach avoids the need for external fixation devices.…”

Section: Discussionmentioning

confidence: 99%

“…The term “maxillofacial” refers to structures involving the incisive, palatine, zygomatic, lacrimal, frontal, and nasal bones as well as the maxillary bone proper . This anatomic region is located between 2 strong craniofacial bony structures, the cranial base and the mandibles …”

mentioning

confidence: 99%

“…Biomechanically, the maxillofacial structure can be thought of as a strong, but lightweight, frame made of thin bones and large airy spaces of the nasal cavity and paranasal sinuses . The maxillofacial frame is strengthened by the buttresses, or projecting support, that maintain the position of the maxilla in the appropriate relationship with the base of the skull and the mandibles . These buttresses in the dog and their importance in maxillofacial reconstruction have been characterized …”

mentioning

confidence: 99%

See 1 more Smart Citation

Internal Fixation of Severe Maxillofacial Fractures in Dogs

Arzi

Verstraete²

2014

Veterinary Surgery

View full text Add to dashboard Cite

Objective: To describe internal fixation for maxillofacial fractures using titanium miniplates and report outcome in 7 dogs. Study design: Prospective case series. Animals: Skeletally mature dogs (n ¼ 7) with maxillofacial fractures. Methods: After CT evaluation of fracture configuration, using a combination of extraoral and intraoral approaches as needed, non-locking titanium miniplates were contoured to match the normal anatomy of the fractured bones. Plates were secured using non-locking titanium screws and then covered with a soft-tissue envelope followed by routine intraoral and extraoral closure. Results: Fractures healed rapidly after reconstruction with immediate return to normal function and occlusion. Follow-up time of up to 94 months indicated excellent longterm function and general lack of complications. One dog developed nasal aspergillosis 1.5 years after surgery and the miniplates were removed without adverse consequences. Conclusion: Internal fixation for maxillofacial reconstruction using titanium miniplates is an excellent solution for the treatment of comminuted and displaced maxillofacial fractures in dogs.The maxillofacial complex in the dog is the most prominent part of the skull rendering it vulnerable to severe injuries.

show abstract

“…This occurs because the maxillofacial bones are thin, surrounding large air‐filled spaces (nasal cavity and frontal sinus) and are located between strong bones, such as the cranial base and the mandible (Knezevic et al . 2011).…”

Section: Introductionmentioning

confidence: 99%

Titanium mesh osteosynthesis for the treatment of severely comminuted maxillofacial fractures in four dogs

Vallefuoco

Bird²,

Gordo

et al. 2021

J of Small Animal Practice

View full text Add to dashboard Cite

Major goals in maxillofacial fracture treatment include to restore the dental occlusion, stabilise the major skeletal supports, restore the contour of the face and achieve proper function and appearance of the face. Titanium is considered an optimal material for maxillofacial reconstruction due to its biocompatibility, high strength, minimal inflammatory reaction and minimal imaging artefact.objectIves: To describe the clinical details, surgical technique, pre-and postoperative imaging and short-and long-term follow-up of severely comminuted maxillofacial fractures treated with titanium mesh and titanium screws in dogs.MaterIals and Methods: Retrospective short case series included four client-owned dogs with maxillofacial fractures. After appropriate medical stabilisation, preoperative CT examination of the head was obtained in all patients for evaluation of fracture configuration and surgical planning. The maxillofacial fractures were stabilised by titanium mesh osteosynthesis. Short-and long-term clinical and radiographic follow-ups were available for all dogs.results: Proper dental occlusion and reconstruction of the anatomic buttresses was achieved in all cases.All dogs recovered uneventfully from the surgery and no complications were recorded on the long-term follow-up up to 43 months. Occlusion was maintained in all dogs, as well as excellent cosmesis of the midface. clInIcal sIgnIfIcance: Titanium mesh osteosynthesis can achieve sufficient rigidity and lead to uncomplicated healing of severely comminuted maxillofacial fractures. This internal fixation method can be considered a valuable option to treat maxillofacial fractures in particular in cases of large bone defect and midface reconstruction.

show abstract

Maxillary Fragment Stabilization After Le Fort I Fracture With 1 Screw Pair per Plate

Cited by 3 publications

References 9 publications

Biomechanical interactions of different mini-plate fixations and maxilla advancements in the Le Fort I Osteotomy: a finite element analysis

Biomechanical interactions of different mini-plate fixations and maxilla advancements in the Le Fort I Osteotomy: a finite element analysis

Internal Fixation of Severe Maxillofacial Fractures in Dogs

Titanium mesh osteosynthesis for the treatment of severely comminuted maxillofacial fractures in four dogs

Contact Info

Product

Resources

About