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Maxillary reconstruction

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https://www.readbyqxmd.com/read/28076936/histochemical-and-morphological-aspects-of-fresh-frozen-bone-a-preliminary-study
#1
F S De Ponte, G Cutroneo, R Falzea, G Rizzo, L Catalfamo, A Favaloro, G Vermiglio, M Runci, A Centofanti, G Anastasi
Bone graft are used in dentistry for the reconstruction of severely atrophic jaws. Fresh frozen bone has no osteogenic property but it has osteoconductive and osteoinductive properties because its matrix contains growth factors such as vascular endothelial growth factor. The purpose of the present study was to evaluate morphological and protein expression characteristics of fresh frozen bone before graft and after six months of graft in patients who needed maxillary reconstruction. After 6 month of graft we observed the presence of viable bone as evidenced by full osteocyte lacunae and by the presence of RANKR, osteocalcin positive cells and vascular endothelial growth factor...
December 6, 2016: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28063782/acceptable-clinical-outcomes-and-recommended-reconstructive-strategies-for-secondary-maxillary-reconstruction-with-vascularized-fibula-osteomyocutaneous-flap-a-retrospective-analysis
#2
Yi Shen, Jun Li, Andrew Ow, Liang Wang, Ming-Ming Lv, Jian Sun
BACKGROUND: We conducted a retrospective analysis of the clinical outcomes and evaluated the reconstructive strategies in patients who underwent secondary maxillary reconstruction with a vascularized fibula osteomyocutaneous flap (VFOF). METHODS: From May of 2001 to June of 2014, 34 patients who underwent secondary maxillary reconstruction with VFOF, with or without titanium mesh, were reviewed. The patients were divided into two groups of maxillary reconstruction, according to different planning and treatment strategies...
December 14, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28053908/reconstruction-of-partial-maxillectomy-defect-with-a-buccal-fat-pad-flap-and-application-of-4-hexylresorcinol-a-case-report
#3
Hyun Seok, Min-Keun Kim, Seong-Gon Kim
Mucoepidermoid carcinoma (MEC) is the most common type of malignant neoplasm in the minor salivary gland. The hard palate is a frequently involved site of MEC. The treatment of low-grade MEC on the hard palate is wide local resection with a tumor-free margin. In the present case, the maxillary defect was reconstructed using a buccal fat pad (BFP) flap, followed by application of 4-hexylresorcinol (4HR) ointment for 2 weeks. The grafted BFP successfully covered the tumor resection defect without tension and demonstrated complete re-epithelialization without any complications...
December 2016: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28039007/pedicle-orientation-in-free-flap-microvascular-maxillofacial-reconstruction
#4
Daniel M Cummins, Beomjune Kim, Arshad Kaleem, Waleed Zaid
Oncologic and traumatic defects of the maxilla can pose a challenge to patients, reconstructive surgeons, and maxillofacial prosthodontists in an attempt to provide satisfactory treatment. Oral-nasal and oral-antral fistulas are frequently treated with soft tissue flaps, osteocutaneous flaps, or a maxillofacial obturator. Often, surgical reconstruction is preferred for patient quality of life and definitive restoration. Surgical reconstruction also avoids the difficulties encountered with fabricating an obturator in an irradiated field with the often-resultant microstomia...
December 10, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28027239/skoog-primary-periosteoplasty-versus-secondary-alveolar-bone-grafting-in-unilateral-cleft-lip-and-alveolus-long-term-effects-on-alveolar-bone-formation-and-maxillary-growth
#5
Fatima Jabbari, Malin M Hakelius, Andreas L I Thor, Erika A Reiser, Valdemar T Skoog, Daniel J Nowinski
BACKGROUND: Clefts involving the alveolus are treated using one of two strategies: primary periosteoplasty at the time of lip repair or secondary alveolar bone grafting at mixed dentition. Most teams favor secondary alveolar bone grafting because of its high success rate, and concerns have been raised that primary periosteoplasty may interfere with maxillary growth. However, primary periosteoplasty may obviate the need for future bone grafting and is still practiced in some centers. Few studies compare the long-term outcomes of these two strategies...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28005787/nasopalatine-island-advancement-flap
#6
Amin Rahpeyma, Saeedeh Khajehahmadi
BACKGROUND: Anterior maxilla is a high esthetic region of the mouth. Some flaps are introduced for bone graft coverage, mainly based on secondary epithelization of connective tissue-periosteal tissues. This article evaluates the versatility of a new mucoperiosteal flap for reproducible coverage in anterior maxilla. METHODS: In 5 mongrel dogs a 5 mm width mucosal defect in labial mucosa was created after extraction of upper jaw incisors. Nasopalatine island advancement flap was used for mucosal replacement...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005762/jaw-in-a-day-state-of-the-art-in-maxillary-reconstruction
#7
Christopher M Runyan, Vishal Sharma, David A Staffenberg, Jamie P Levine, Lawrence E Brecht, Leonard H Wexler, David L Hirsch
BACKGROUND: Reconstruction of maxillary defects following tumor extirpation is challenging because of combined aesthetic and functional roles of the maxilla. One-stage reconstruction combining osseous free flaps with immediate osseointegrated implants are becoming the standard for mandibular defects, and have similar potential for maxillary reconstruction. METHODS: A woman with maxillary Ewing sarcoma successfully treated at age 9 with neoadjuvant chemotherapy, right hemimaxillectomy, and obturator prosthetic reconstruction presented for definitive reconstruction, complaining of poor obturator fit, and hypernasality...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005755/management-of-zygomatic-fractures-in-young-patients-technical-modifications-for-aesthetic-and-functional-results
#8
Antonio Cortese, Giuseppe D'Alessio, Sergio Brongo, Maurizio Gargiulo, Pier Paolo Claudio
INTRODUCTION: The zygomaticomaxillary complex is very vulnerable to injury because of its intrinsically prominent convexity. There are 2 different surgical approaches for the therapy of these fractures: closed reduction and open reduction. In the open reduction 2 or 3 fixation points with related incisions are usually necessary in dislocated fractures: osteosynthesis must be performed starting from zygomaticofrontal suture when dislocated at this site, followed by zygomatic body fixation on the anterior sinus wall, anterior orbital floor margin fixation, and finally orbital floor reconstruction in case of eye globe dislocation with diplopia...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005744/a-new-procedure-assisted-by-digital-techniques-for-secondary-mandibular-reconstruction-with-free-fibula-flap
#9
Yao Yu, Wen-Bo Zhang, Xiao-Jing Liu, Chuan-Bin Guo, Guang-Yan Yu, Xin Peng
PURPOSE: To describe a new procedure assisted by digital techniques for secondary mandibular reconstruction with free fibula flap. METHODS: The 3-dimensional (3D) reconstruction images for vessels were used to demonstrate the vascular diameter and location, which help select the most suitable vein and artery for anastomosis. Maxillary and mandibular stone models of the patient were fabricated and a stable occlusal relationship was determined on an articulator. The 3D tooth model data were scanned using a 3D-optical measuring system, and the obtained stereolithographic (STL) data were imported to Geomagic software...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005656/skeletal-changes-of-an-osteomyocutaneous-facial-allograft-five-years-following-transplantation
#10
Bahar Bassiri Gharb, Antonio Rampazzo, Gaby Doumit, Steven Bernard, Maria Siemionow, Francis Papay, Risal Djohan
BACKGROUND: More than 30 face transplantations have been performed worldwide, most including part of the facial skeletal framework. In this study, the modifications of the skeletal component of a facial allograft were evaluated. METHODS: Standard head computed tomography (CT) scans, CT angiogram, and bone mineral densitometry were evaluated. Cephalometric analysis was performed. The pre and postoperative CT images were overlapped and the skeletal changes were expressed in a numeric and color-coded scale...
December 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28004496/maxillary-sinus-volume-new-physiopathological-data-in-fungal-ball-genesis-a-retrospective-study
#11
Justin Michel, Thomas Radulesco, Julien Mancini, Arnaud Paganelli, Arthur Varoquaux, Pascal Adalian, Stéphane Ranque, Patrick Dessi
OBJECTIVES: The goal of this study was to compare maxillary sinus (MS) volume in patients with, or without; maxillary fungal ball. DESIGN: Monocentric retrospective study performed on 115 patient CT scans. SETTINGS: We defined 2 groups of patients according to the absence (control group) or the presence (Fungal ball group) of unilateral fungal ball in the MS. Sinus 3D reconstruction was created from CT Scan. PARTICIPANTS: Control group: 71 patients (36 women - 50...
December 22, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27978914/-three-dimensional-reconstruction-measurement-study-of-palatal-contour-changes-in-different-bone-ages-after-rapid-maxillary-expansion
#12
Z D Xiong, J Ke, G Z Zhao, Q H Lin, X M Yang, Y H Xiao
Objective: To compare dental and skeletal changes after rapid maxillary expansion in patients with different bone ages. Methods: Thirty-seven patients in different growth period were divided into three groups according to cervical vertebral maturation (CVM). There were 13 patients in the growth acceleration group, 13 patients in growth peak group, and 11 patients in growth deceleration group. Cone-beam computed tomography (CBCT) images were segmented and reconstructed using Mimics image processing software to assess the change of palatal morphology before and after treatment...
December 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27932858/one-stage-bone-strip-reconstruction-technique-with-balloon-sinus-dilatation-surgery-for-chronic-maxillary-atelectasis
#13
Tomoyuki Kashima, Robert A Goldberg, Jocelyne C Kohn, Daniel B Rootman
PURPOSE: Chronic maxillary atelectasis is characterized by unilateral spontaneous enophthalmos and hypoglobus due to increased orbital volume secondary to maxillary sinus inward deformation. Reformation of the sinus architecture and reconstruction of the orbit are key to a successful outcome. Here, we introduce a one-staged surgery that addresses both these goals. PATIENTS AND METHODS: We retrospectively reviewed 11 patients treated with one-stage orbital and sinus surgery...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27922956/the-complicated-facial-war-injury-pitfalls-and-mismanagement
#14
Ghassan S Abu-Sittah, Joe Baroud, Christopher Hakim, Cynthia Wakil
OBJECTIVE: The aim of this paper is to share the authors' experience in the management of complicated facial war injuries using free tissue transfer. A discussion on the most commonly encountered pitfalls in management during the acute and complicated settings is presented in an effort to raise insight on facial war wound complications. METHODOLOGY: Two patients of complicated facial war injuries are presented to exemplify the pitfalls in acute and chronic management of the mandibular region in the first patient and the orbito-maxillary region in the second...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922953/total-maxillary-reconstruction-with-a-bi-paddle-double-barrel-osteocutaneous-fibular-flap-and-arteriovenous-saphenous-loop-after-a-globe-sparing-total-maxillectomy-due-to-osteosarcoma
#15
Wan-Ling Tseng, Tzu-Yen Chang, Kuo-Shu Hung, Szu-Han Chen, Jenn-Ren Hsiao, Yao-Chou Lee
BACKGROUND: The titanium mesh or bone graft is usually used for orbital support after a globe-sparing total maxillectomy. However, its use can invite complications, such as infection, exposure, and absorption, especially for patients who require adjuvant radiotherapy. Here, the authors present a patient who received total maxillary reconstruction with an osteocutaneous fibular flap. METHODS: A 53-year-old man with the diagnosis of maxillary osteosarcoma received a globe-sparing total maxillectomy...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27908574/reconstruction-of-a-post-traumatic-maxillary-ridge-using-a-radial-forearm-free-flap-and-immediate-tissue-engineering-bone-morphogenetic-protein-bone-marrow-aspirate-concentrate-and-cortical-cancellous-bone-case-report
#16
James C Melville, Ramzey Tursun, J Marshall Green, Robert E Marx
The purpose of this article is to describe reconstruction of the maxillary alveolar ridge by use of a microvascular free flap combined with an immediate tissue-engineered bone graft. This novel surgical technique involved the use of a radial forearm free flap and immediate allogeneic avascular bone graft augmented with bone morphogenetic protein and bone marrow aspirate concentrate. A poly-d,l-lactic acid mesh was used a containment unit for the bone graft. The patient was successfully treated with a viable radial forearm free flap for soft tissue and regeneration of bone with adequate height and width, which allowed the placement of 3 dental implants with excellent arch coordination...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27896212/effect-of-slow-forced-eruption-on-the-vertical-levels-of-the-interproximal-bone-and-papilla-and-the-width-of-the-alveolar-ridge
#17
Eun-Young Kwon, Ju-Youn Lee, Jeomil Choi
OBJECTIVE: Forced eruption has been proposed for the reconstruction of deficient bone and soft tissue. The aim of this study was to examine the changes in the alveolar ridge width and the vertical levels of the interproximal bone and papilla following forced eruption. METHODS: Patients whose hopeless maxillary anterior teeth were expected to undergo severe bone resorption and soft tissue recession upon extraction were recruited. In addition, patients whose maxillary anterior teeth required forced eruption for restoration due to tooth fracture or dental caries were included...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27891316/histologic-and-histomorphometric-evaluation-of-two-grafting-materials-cenobone-and-itb-mba-in-open-sinus-lift-surgery
#18
Babak Amoian, Maryam Seyedmajidi, Hamidreza Safipor, Sediqe Ebrahimipour
AIMS AND OBJECTIVES: Alveolar ridge reduction caused after tooth extraction can be minimized through ridge preservation and application of graft materials. The aim of this study was to compare the histologic and histomorphometric aspects of bone particulated allografts, Cenobone and ITB-MBA, in the reconstruction of vertical alveolar ridge after maxillary sinus augmentation. MATERIALS AND METHODS: This clinical trial was performed among 20 patients. The participants were randomly divided into two groups of 10 participants...
September 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/27890229/maxillofacial-defects-and-the-use-of-growth-factors
#19
REVIEW
Alan S Herford, Meagan Miller, Fabrizio Signorino
The development and increase in knowledge of the benefits and applications of growth factors in craniofacial reconstruction adds a novel tool in the reconstructive surgeon's armamentarium. The use of growth factors varies according to presentation. Growth factors help to promote healing, angiogenesis, and formation of bone of improved quality and quantity. Growth factors used with stem cells and scaffolds provide a solution or alternative to discomfort created by donor autograft sites. The application and results of these growth factors are displayed in various examples of maxillofacial defects in this article, including reconstruction of a premaxillary cleft and of maxillary augmentation...
February 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/27890226/tissue-engineering-for-vertical-ridge-reconstruction
#20
REVIEW
Neel Patel, Beomjune Kim, Waleed Zaid, Daniel Spagnoli
This article provides an overview of basic tissue engineering principles as they are applied to vertical ridge defects and reconstructive techniques for these types of deficiencies. Presented are multiple clinical cases ranging from office-based dentoalveolar procedures to the more complex reconstruction of postresection mandibular defects. Several different types of regenerative tissue constructs are presented; either used alone or in combination with traditional reconstructive techniques and procedures, such as maxillary sinus augmentation, Le Fort I osteotomy, and microvascular free tissue transfer...
February 2017: Oral and Maxillofacial Surgery Clinics of North America
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