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Maxillary reconstruction

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https://www.readbyqxmd.com/read/27922956/the-complicated-facial-war-injury-pitfalls-and-mismanagement
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/27886708/individual-tooth-segmentation-from-ct-images-scanned-with-contacts-of-maxillary-and-mandible-teeth
#8
Zeyang Xia, Yangzhou Gan, Lichao Chang, Jing Xiong, Qunfei Zhao
BACKGROUND AND OBJECTIVE: Tooth segmentation from computed tomography (CT) images is a fundamental step in generating the three-dimensional models of tooth for computer-aided orthodontic treatment. Individual tooth segmentation from CT images scanned with contacts of maxillary and mandible teeth is especially challenging, and no method has been reported previously. This study aimed to develop a method for individual tooth segmentation from these images. METHODS: Tooth contours of maxilla and mandible are first segmented from the volumetric CT images slice-by-slice...
January 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/27879599/total-human-eye-allotransplantation-developing-surgical-protocols-for-donor-and-recipient-procedures
#9
Edward H Davidson, Eric W Wang, Jenny Y Yu, Juan C Fernandez-Miranda, Dawn J Wang, Nikisha Richards, Maxine Miller, Joel S Schuman, Kia M Washington
BACKGROUND: Vascularized composite allotransplantation of the eye is an appealing, novel method for reconstruction of the nonfunctioning eye. The authors' group has established the first orthotopic model for eye transplantation in the rat. With advancements in immunomodulation strategies together with new therapies in neuroregeneration, parallel development of human surgical protocols is vital for ensuring momentum toward eye transplantation in actual patients. METHODS: Cadaveric donor tissue harvest (n = 8) was performed with orbital exenteration, combined open craniotomy, and endonasal approach to ligate the ophthalmic artery with a cuff of paraclival internal carotid artery, for transection of the optic nerve at the optic chiasm and transection of cranial nerves III to VI and the superior ophthalmic vein at the cavernous sinus...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27872546/evaluation-of-root-canal-morphology-of-maxillary-second-premolars-in-a-saudi-arabian-sub-population-an-in-vitro-microcomputed-tomography-study
#10
Mutasim Elnour, Abdul Khabeer, Emad AlShwaimi
AIM: To investigate the root canal morphology of maxillary second premolars in a Saudi Arabian subpopulation using microcomputed tomography (micro-CT). METHODOLOGY: Micro-CT analysis was performed on 100 maxillary second premolars. The anatomy of each tooth (number of roots, canals, orifices, and apical foramina, and the presence of apical deltas and accessory canals) was analyzed from reconstructed three-dimensional images. RESULTS: The most common morphology was a single root (67%), followed by two roots (30%), and three roots (3%)...
October 2016: Saudi Dental Journal
https://www.readbyqxmd.com/read/27871705/applications-of-cone-beam-computed-tomography-to-assess-the-effects-of-labial-crown%C3%A2-morphologies-and-collum-angles-on%C3%A2-torque%C3%A2-for-maxillary-anterior-teeth
#11
Wei-Dong Kong, Jun-Yu Ke, Xiang-Quan Hu, Wu Zhang, Shu-Shu Li, Yi Feng
INTRODUCTION: Currently, cone-beam computed tomography (CBCT) has been widely used because of its capacity to evaluate the anatomic structures of the maxilla, mandible, and teeth in 3 dimensions. However, articles about the use of CBCT to evaluate the relationships between the morphology of individual teeth and torque expression remain rare. In this study, we aimed to determine the influence of labial crown morphologies and collum angles on torque for maxillary anterior teeth using CBCT...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27871286/maxillary-calcifying-epithelial-odontogenic-tumor-with-sinus-and-buccal-vestibule-extension-a-case-report-and-immunohistochemical-study
#12
Cristina Munteanu, Daniel Pirici, Alex Emilian Stepan, Adrian Camen, Claudiu Margaritescu
BACKGROUND: Calcifying epithelial odontogenic tumor (CEOT) is a rare benign neoplasia, locally aggressive, that tends to invade bone and adjacent soft tissues. This case report describes the thirteenth known case of CEOT with maxillary sinus extension and the second one that also involves the buccal vestibule mucosa with peculiar histopathological and immunohistochemical data. CASE PRESENTATION: Here we report the case of a 45-year-old female with a CEOT diagnosed and treated at the Oral & Maxillofacial Surgery Department, County Clinical Emergency Hospital of Craiova, Romania...
November 21, 2016: Diagnostic Pathology
https://www.readbyqxmd.com/read/27867669/simplifying-the-treatment-of-bone-atrophy-in-the-posterior-regions-combination-of-zygomatic-and-wide-short-implants-a-case-report-with-2-years-of-follow-up
#13
Fernanda Faot, Geninho Thomé, Amália Machado Bielemann, Caio Hermann, Ana Cláudia Moreira Melo, Luis Eduardo Marques Padovan, Ivete Aparecida de Mattias Sartori
The rehabilitation of maxillary and mandibular bone atrophy represents one of the main challenges of modern oral implantology because it requires a variety of procedures, which not only differ technically, but also differ in their results. In the face of limitations such as deficiencies in the height and thickness of the alveolar structure, prosthetic rehabilitation has sought to avoid large bone reconstruction through bone grafting; this clinical behavior has become a treatment system based on evidence from clinical scientific research...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27857522/the-use-of-reformatted-cone-beam-ct-images-in-assessing-mid-face-trauma-with-a-focus-on-the-orbital-floor-fractures
#14
Raluca Roman, Mihaela Hedeşiu, Floarea Fildan, Robert Ileşan, Diana Mitea, Cristian Dinu, Mihaela Băciuţ
BACKGROUND AND AIM: This study aims at evaluating the reliability on specific multi-planar cone beam computer tomography (CBCT) reconstruction in the orbital floor fractures. METHODS: CBCT examination of the mid-face fractures area involving the floor of the orbit was performed in a number of 93 trauma patients by two independent radiologists. Both radiologists assessed the axial, coronal and sagittal sections and also the oblique coronal and sagittal extracted sections evaluating the location of the orbital fractures, its size and displacement, the involvement of the infra-orbital foramen, herniation of fat or muscle within the maxillary sinus, the overall type of the fracture and the implication of lateral or medial orbital wall...
2016: Clujul Medical (1957)
https://www.readbyqxmd.com/read/27847815/comparison-of-bone-resorption-rates-after-intraoral-block-bone-and-guided-bone-regeneration-augmentation-for-the-reconstruction-of-horizontally-deficient-maxillary-alveolar-ridges
#15
B Alper Gultekin, Elcin Bedeloglu, T Emre Kose, Eitan Mijiritsky
Purpose. Bone atrophy after tooth loss may leave insufficient bone for implant placement. We compared volumetric changes after autogenous ramus block bone grafting (RBG) or guided bone regeneration (GBR) in horizontally deficient maxilla before implant placement. Materials and Methods. In this retrospective study, volumetric changes at RBG or GBR graft sites were evaluated using cone-beam computed tomography. The primary outcome variable was the volumetric resorption rate. Secondary outcomes were bone gain, graft success, and implant insertion torque...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27833714/maxillary-sinus-mucocele-as-a-late-complication-in-zygomatic-orbital-complex-fracture
#16
Juliana Dreyer da Silva de Menezes, Lucas Borin Moura, Valfrido Antonio Pereira-Filho, Eduardo Hochuli-Vieira
This article presents an unusual case of maxillary sinus mucocele as a late complication of zygomatic-orbital complex fracture, 23 years after the initial treatment. The patient was referring diplopia and decreased visual acuity with signs of dystopia, proptosis, and epiphora. Computed tomographic scan revealed an expansive lesion in the maxillary sinus with surrounding bone erosion and displacement of the eyeball. Treatment option was excisional biopsy and orbital floor reconstruction with titanium mesh restoring the appropriate orbital position...
November 2016: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/27833709/immediate-reconstruction-of-large-full-thickness-segmental-anterior-maxillary-defect-with-bone-transport
#17
Alberto Rocha Pereira, Nuno Montezuma, Luis Oliveira, Miguel Magalhães, José Rosa
Maxillary segmental defects are a reconstructive challenge particularly when the anterior arch is involved. Missing bone, mucosa, and teeth should be replaced; fistulae closure should be guaranteed by bone and mucosa continuity; stable functional occlusion should be achieved; and facial aesthetics restored. These defects resulting from tumor excisions, if left untreated, will cause additional problems related to interposed scar and collapse of lip and nose. Immediate reconstruction should avoid these problems and should be considered when safe tumor-free margins are obtained...
November 2016: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/27833334/mandibular-reconstruction-overview
#18
REVIEW
Batchu Pavan Kumar, V Venkatesh, K A Jeevan Kumar, B Yashwanth Yadav, S Ram Mohan
INTRODUCTION: Mandibular reconstruction has changed significantly over the years and continues to evolve with the introduction of newer technologies and techniques. PURPOSE: This article reviews the history of oromandibular reconstruction, biomechanics of mandible, summarizes the reconstruction options available for mandible with defect classification, goals in reconstruction, the various donor sites, current reconstructive options, dental rehabilitation and persistent associated problems...
December 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27833286/diagnostic-tools-in-maxillofacial-fractures-is-there-really-a-need-of-three-dimensional-computed-tomography
#19
Sheerin Shah, Sanjeev K Uppal, Rajinder K Mittal, Ramneesh Garg, Kavita Saggar, Rishi Dhawan
INTRODUCTION: Because of its functional and cosmetic importance, facial injuries, especially bony fractures are clinically very significant. Missed and maltreated fractures might result in malocclusion and disfigurement of the face, thus making accurate diagnosis of the fracture very essential. In earlier times, conventional radiography along with clinical examination played a major role in diagnosis of maxillofacial fractures. However, it was noted that the overlapping nature of bones and the inability to visualise soft tissue swelling and fracture displacement, especially in face, makes radiography less reliable and useful...
May 2016: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/27826386/postoperative-irradiation-after-implant-placement-a-pilot-study-for-prosthetic-reconstruction
#20
Re-Mee Doh, Sungtae Kim, Ki Chang Keum, Jun Won Kim, June-Sung Shim, Han-Sung Jung, Kyeong-Mee Park, Moon-Kyu Chung
PURPOSE: On maxillofacial tumor patients, oral implant placement prior to postoperative radiotherapy can shorten the period of prosthetic reconstruction. There is still lack of research on effects of post-implant radiotherapy such as healing process or loading time, which is important for prosthodontic treatment planning. Therefore, this study evaluated the effects of post-implant local irradiation on the osseointegration of implants during different healing stages. MATERIALS AND METHODS: Custom-made implants were placed bilaterally on maxillary posterior edentulous area 4 weeks after extraction of the maxillary first molars in Forty-eight Sprague-Dawley rats...
October 2016: Journal of Advanced Prosthodontics
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