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Computer aided planning and navigation for orbito-zygomatic reconstruction  [PDF]
Christophe Marecaux,Matthieu Chabanas,Yohan Payan,Franck Boutault
Physics , 2007,
Abstract: This paper suggests a full protocol of Computer Aided Surgery as previously recommended in literature addressing the challenging task of primary or secondary reconstruction of orbito-zygomatic dislocation. First, on a specifically developed planning software, the best zygoma reduction and orbital boundaries reconstruction to achieve skeletal symmetry are determined. This treatment plan is then transferred to the 3D Navigation Systems within the operating room. After patient's anatomy registration to his preoperative CT scan data, the navigation system allows zygomatic guiding to its planned reduced location and bone orbital volume restoration control. The feasibility of this technique was checked in 3 patients with major orbito-zygomatic deformities. Preliminary clinical results are presented.
Rapid prototyping in Maxillofacial Surgery and Traumatology
Rosa, Everton Luis Santos da;Oleskovicz, César Fernando;Arag?o, Bruno Nogueira;
Brazilian Dental Journal , 2004, DOI: 10.1590/S0103-64402004000300015
Abstract: review of the literature from 1991 to 2002 on the use of rapid prototyping in the biomedical area emphasizes the applicability of this technique to aid diagnosis and planning in maxillofacial surgery and traumatology. a case report in which a tmj ankylosis relapse was treated using rapid prototyping (selective laser sintering) for surgery planning is presented. after one year, the patient's buccal opening was 45 mm. transitory paralysis of the facial nerve disappeared totally in six months.
Computer aided planning for orthognatic surgery  [PDF]
Matthieu Chabanas,Christophe Marecaux,Yohan Payan,Franck Boutault
Physics , 2006,
Abstract: A computer aided maxillofacial sequence is presented, applied to orthognatic surgery. It consists of 5 main stages: data acquisition and integration, surgical planning, surgical simulation, and per operative assistance. The planning and simulation steps are then addressed in a way that is clinically relevant. First concepts toward a 3D cephalometry are presented for a morphological analysis, surgical planning, and bone and soft tissue simulation. The aesthetic surgical outcomes of bone repositioning are studied with a biomechanical Finite Element soft tissue model.
Prevalence evaluation of ocular injuries of different kinds as zygomatic fractures consequences in patients referring to department of oral and maxillofacial surgery, Shariati Hospital (Oct 2004-Oct 2
Mahmood Hashemi H.
Journal of Dental Medicine , 2008,
Abstract: "nBackground and Aim: Zygomatic fractures are common among oral and maxillofacial problems and ocular injuries are of great importance, the prevalence of ocular problems following zygomatic fractures in Iran is not clear so we performed this study to evaluate this problem in patients referring to Shariati Hospital. "nMaterials and Methods: In this descriptive, cross-sectional study, we evaluated the patients who referred to department of oral and maxillofacial surgery of Shariati hospital for ocular complains following zygomatic fractures. The evaluation was performed both clinically and historically. "nResults: 115 patients were examined (87 males and 28 females) with the mean age of 26 for males and 32 for females. The prevalence of ocular injuries were as follows: subconjunctival ecchymosis: 23.07% for males and 21.05% for females. Displacement of palpebral fissure: 26.5% for males and 27.6% for females. Unequal papillary levels: 18.37% for males and 15.78% for females. Diplopia: 8.9% for males and 10.5% for females. Enophthalmos: 23.1% for males and 25% for females. "nConclusion: It is strongly recommended to refer patients with zygomatic fracture for an ophthalmologic consultation.
Epidemiology of maxillofacial injuries at a regional hospital in Goiania, Brazil, between 2008 and 2010
Cláudio Maranh?o Pereira,Mauro Silva Filho,Danilo Santos Carneiro,Renan Correia Arcanjo
RSBO , 2011,
Abstract: Introduction and objective: Facial lesions assume an outstanding role in the attendance of polytraumatized patients in hospital emergency services. The aim of this study was to conduct and epidemiologic study of patients attended at the Buccomaxillofacial Surgery and Traumatology Service of a regional hospital in Goiania/GO, Brazil, between 2008 and 2010. Material and methods: 521 files of patients, who had suffered maxillofacial traumatisms that resulted in a total of 615 fractures, were evaluated. The files were used to analyze gender, age, etiologic agents and distribution of fractured bones. Results: About 80% of patients were male, whereas 20% of the affected individuals were women. The most frequently etiologic factor found in the two roups was automobile accidents, followed by physical aggressions and falls. Concerning to fractured bones, the zygomatic complex, followed by fractures of the mandible, the nasal bones themselves, condyle and Le Fort type fractures were the most prevalent ones, in both groups. Conclusion: Knowledge of the incidence and etiology of maxillofacial fractures is of great importance to the professionals involved in the treatment of these patients. Within this context, Buccomaxillofacial Surgery and Traumatology is increasingly being affirmed as one of the most important specialties at the emergency centers of regional hospitals concerning to the treatment of patients who are victims of traumatisms.
Biomechanics applied to computer-aided diagnosis: examples of orbital and maxillofacial surgeries  [PDF]
Yohan Payan,Vincent Luboz,Matthieu Chabanas,Pascal Swider,Christophe Marecaux,Franck Boutault
Physics , 2006,
Abstract: This paper introduces the methodology proposed by our group to model the biological soft tissues deformations and to couple these models with Computer-Assisted Surgical (CAS) applications. After designing CAS protocols that mainly focused on bony structures, the Computer Aided Medical Imaging group of Laboratory TIMC (CNRS, France) now tries to take into account the behaviour of soft tissues in the CAS context. For this, a methodology, originally published under the name of the Mesh-Matching method, has been proposed to elaborate patient specific models. Starting from an elaborate manually-built "generic" Finite Element (FE) model of a given anatomical structure, models adapted to the geometries of each new patient ("patient specific" FE models) are automatically generated through a non-linear elastic registration algorithm. This paper presents the general methodology of the Mesh-Matching method and illustrates this process with two clinical applications, namely the orbital and the maxillofacial computer-assisted surgeries.
Maxillofacial computer aided surgery: a 5 years experience and future  [PDF]
Christophe Marecaux,Matthieu Chabanas,Vincent Luboz,Annaig Pedrono,Franz Chouly,Pascal Swider,Yohan Payan,Franck Boutault
Physics , 2006,
Abstract: This paper gives a review of the experience provided by our group in terms of computer aided maxillo-facial surgery.
Multidetector computed tomographic evaluation of maxillofacial trauma  [PDF]
Kaleem Ahmad, RK Rauniyar, Mukesh Kumar Gupta, Sajid Ansari, Ashok Raj Pant, Abhishek Kumar, Basmah Abdur Rashid
Asian Journal of Medical Sciences , 2014, DOI: 10.3126/ajms.v5i4.9561
Abstract: Introduction: Maxillofacial injuries are one of the most frequently encountered entities accounting for a large proportion of patients in emergency department. Present study was performed to assess the role of multidetector computed tomography (MDCT) in patients of maxillofacial trauma and to describe the spectrum of various patterns of injuries in maxillofacial region in this part of Nepal. Methods: The study was carried out on a prospective basis over a period of one year. All the patients referred for evaluation of maxillofacial trauma were included in the study. MDCT was done in patients of maxillofacial injury and the data was recorded and analyzed. Volumetric MDCT scan of the maxillofacial region was performed in axial plane with multiplanar reconstruction in coronal and sagittal planes were obtained wherever required. Results: Out of 60 patients of maxillofacial trauma 42 (70%) were males and 18 (30%) were females and age ranges from 12 to 70 years. The 11?30 years age group has the highest percentage (55%) of maxillofacial trauma, followed by 31?40 (20%). The common cause of injuries in our study was road traffic accidents (58.33%), fall from height (20%), physical assault (16.66%) and sport injuries (5%). Out of 60 patients there was total of 115 fractures. The frequency and types of fracture was as follows: orbital floor fracture in 21 (35%), maxillary sinus wall fracture in 18 (30%), nasal bone fracture in 17 (28.33%), jaw fracture in 15 (25%), zygomatic bone fracture in 13 (21.66%), orbital wall fracture in 11 (18.33%), naso?ethmoidal fractures in 9 (15%), frontal sinus fracture in 7 (11.66%), Lefort fracture in 1 (1.66%) and others 3 (5%). The highest percentage of fracture was of orbital floor (35%) followed by fracture of wall of maxillary sinus (30%) and nasal bone fracture (28.33%). Three cases had simultaneous injury of the globe and cervical spine; they underwent computed tomography/magnetic resonance imaging for the assessment of spine. Conclusion: Injuries to maxillofacial region is one of the most common emergency requiring accurate and early diagnosis for preventing unnecessary investigations and proper management. MDCT has high sensitivity and specificity and has high accuracy for detection of fracture. DOI: http://dx.doi.org/10.3126/ajms.v5i4.9561 Asian Journal of Medical Sciences 2014 Vol.5(4); 39-43
Application of computer aided surgery system and 3D printing technology in the reconstruction of the defects in oral and maxillofacial region

- , 2016, DOI: 10.7518/gjkq.2016.06.023
Abstract: 摘要: 数字医学是一门新兴的多领域交叉学科,数字医学的快速发展,给临床医学带来了革命性变化。尤其是计算机辅助手术系统的开发与应用,使医学进入了一个全新的可视化的信息时代,其与3D打印技术相结合,推动了精准外科手术的发展,引发外科领域的技术革命,促进外科治疗发生质的飞跃。口腔颌面部缺损的修复重建具有复杂性与高要求的特点,计算机辅助手术系统与3D打印技术在口腔颌面部缺损修复重建中的应用,深刻地改变了这一领域的面貌。本文对计算机辅助手术系统与3D打印技术在口腔颌面部缺损修复重建中的应用与进展作一综述,并对其发展前景进行展望。
Abstract: The rapid development of digital medicine brought the revolutionary change to clinical medicine, which was an emerging interdisciplinary field. The development and application of computer aided surgery system made the medicine enter a completely new visual information age especially, which promoted the development of precise and effective surgical treatment for qualitative leap and triggers a technology revolution in the field of surgery with the combination of 3D printing technology. The computer aided surgery system with 3D printing technology was extensively and profoundly applied in reconstruction of the defect in oral and maxillofacial region, which was complex and demanding. The paper reviewed the application and progress of computer aided surgery system and 3D printing technology in reconstruction of the defect in oral and maxillofacial region
Rehabilitation of severely resorbed maxillae with zygomatic implants: An update
Galán Gil,Sonica; Pe?arrocha Diago,Miguel; Balaguer Martínez,Jose; Marti Bowen,Eva;
Medicina Oral, Patología Oral y Cirugía Bucal (Internet) , 2007,
Abstract: studies highlight the zygomatic bone as a suitable anatomical structure for implant placements since they cross four corticals. zygomatic implants were described by branemark in 1998, since then zygomatic implants are indicated in maxillae with atrophy of the posterior area. they have been used in systemic diseases associated with bone loss in this area, and in patients who have suffered radical surgery for maxillofacial tumors. computed tomography is recommended before placement in order to discount any pathology of the maxillary sinus. the surgical technique has been slightly modified since its description with procedures such as the sinus slot technique. the success rate obtained by different authors varies between 82% and 100%, indicating this technique as a valid treatment option. the objective of this study was to revise the literature with the aim of updating the subject.
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