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Maxillary reconstruction

Jun Li, Yi Shen, Liang Wang, Jin-Bing Wang, Jian Sun, Thorsen W Haugen
PURPOSE: The aims of this study are to review our surgical experience in maxillary and midface reconstruction using free vascularized tissue and to compare the postoperative outcomes based on superficial temporal versus cervical recipient vessels. MATERIALS AND METHODS: We performed a retrospective review of patients who underwent maxillary and midface reconstruction with free vascularized tissue from March 2001 to July 2014. Two groups were analyzed: those in whom superficial temporal vessels were used as the recipient vessels and those in whom cervical vessels were used as the recipient vessels...
February 20, 2018: Journal of Oral and Maxillofacial Surgery
Huseyin Burak Kutlu, Samir Goyushov, Bünyamin Calisan, Tolga F Tözüm
OBJECTIVE: Loss of teeth frequently results in compound horizontal and vertical alveolar bone defects. An appropriate bone structure is the key for implant placement and bony support of soft tissues. Advanced bone augmentation techniques are required for the reconstruction of these defects. This report will present a new bone block grafting technique with 12-month follow-up. METHOD: The seedling technique was used to augment the alveolar bone 3-dimensionally with autologous bone block and an osseointegrated implant in a 2-stage procedure...
March 13, 2018: Journal of Craniofacial Surgery
Keisuke Sugahara, Yoshiharu Katsumi, Masahide Koyachi, Yu Koyama, Satoru Matsunaga, Kento Odaka, Shinichi Abe, Masayuki Takano, Akira Katakura
Background: Along with the advances in technology of three-dimensional (3D) printer, it became a possible to make more precise patient-specific 3D model in the various fields including oral and maxillofacial surgery. When creating 3D models of the mandible and maxilla, it is easier to make a single unit with a fused temporomandibular joint, though this results in poor operability of the model. However, while models created with a separate mandible and maxilla have operability, it can be difficult to fully restore the position of the condylar after simulation...
December 2018: Maxillofacial Plastic and Reconstructive Surgery
Norio Kasai, Osamu Kondo, Koichi Suzuki, Yoshinori Aoki, Norihisa Ishii, Masamichi Goto
BACKGROUND: Facial deformation as a sequela of leprosy is caused not only by a saddle nose but also by regression of the maxilla, as well documented in paleopathological observations of excavated skeletal remains of patients with leprosy. However, maxillary changes in living patients have been evaluated only by the subjective visual grading. Here, we attempted to evaluate maxillary bone deformation in patients with leprosy using three-dimensional computed tomography (3D-CT). METHODS: Three-dimensional images centered on the maxilla were reconstructed using multiplanar reconstruction methods in former patients with leprosy (n = 10) and control subjects (n = 5); the anterior-posterior length of the maxilla (MA-P) was then measured...
March 9, 2018: PLoS Neglected Tropical Diseases
Omri Emodi, Saleh Nseir, Dekel Shilo, Hanna Srouji, Adi Rachmiel
Isolated orbital wall fractures account for 4% to 16% of all facial fractures. Even a modest change in the position of the bony walls can have a significant impact on orbital volume and globe position. Alloplastic materials or autogenous bone grafts such as the antral maxillary wall can be used to reconstruct small- to medium-size orbital fractures. The main advantage of an antral wall graft is the intraoral approach with minimal morbidity. Nine patients underwent repair of orbital floor fractures using the extraoral and the intraoral antral wall approach...
March 8, 2018: Journal of Craniofacial Surgery
Raymund E Rebong, Kelton T Stewart, Achint Utreja, Ahmed A Ghoneima
OBJECTIVES: The aim of this study was to assess the dimensional accuracy of fused deposition modeling (FDM)-, Polyjet-, and stereolithography (SLA)-produced models by comparing them to traditional plaster casts. MATERIALS AND METHODS: A total of 12 maxillary and mandibular posttreatment orthodontic plaster casts were selected from the archives of the Orthodontic Department at the Indiana University School of Dentistry. Plaster models were scanned, saved as stereolithography files, and printed as physical models using three different three-dimensional (3D) printers: Makerbot Replicator (FDM), 3D Systems SLA 6000 (SLA), and Objet Eden500V (Polyjet)...
March 6, 2018: Angle Orthodontist
Farhan Ahmed Eitezaz, Mamoon Rashid, Shumaila Yousaf, Ishtiaq -Ur-Rehman, Samia Fatima, Mehreen Masud, Aamna Sanober, Adeela Hussain Khan, Haroon Ur Rashid
BACKGROUND: Maxilla is perhaps the most essential and visible part of the mid-face. It is a threedimensional structure and when reconstructing maxillectomy defects the principles of aesthetics as well as the best functional outcomes are taken into account. The aim of this study is to compare the Anterolateral Thigh Flap (ALTF) to the standard option like the Rectus Abdominis Free Flap (RAMFF) for the reconstruction of complex maxillary defects. METHODS: This descriptive case series was conducted at the Department of Plastic and Reconstructive Surgery, Shifa International Hospital Islamabad, Pakistan from 2009 to 2016...
January 2018: Journal of Ayub Medical College, Abbottabad: JAMC
Siru Zhou, Yiling Yang, Nayoung Ha, Peng Zhang, Xuhui Ma, Xinyi Gong, Yueyang Hong, Xiao Yang, Shuliang Yang, Qinggang Dai, Lingyong Jiang
OBJECTIVE: The aim of the study was to study the specific morphological features of alveolar bone and compare it to femoral bone in rats. METHODS: Twelve 3-month-old nonpregnant female Sprague-Dawley rats were used in the present study. The left maxillae and femurs of 6 rats were used for micro-computed tomography (micro-CT) scanning. The trabecular bone of the distal femur and the interradicular alveolar bone of the maxillary first molar were reconstructed and analyzed...
March 1, 2018: Journal of Craniofacial Surgery
Jeffrey Johnson, Ron Karni, Tang Ho
INTRODUCTION: Intraosseous hemangiomas of the midface are rare with few reported cases in the literature. Various reconstructive methods have been previously described, but none using vascularized bone graft secondary to the benign nature of the tumor and often relatively limited defect size. CLINICAL REPORT: The authors present the case of a 47-year-old man with a biopsy proven enlarging right maxillary intraosseous cavernous hemangioma which was resected primarily, resulting in a large defect involving the entire zygomaticomaxillary buttress and a portion of the right orbital floor and malar prominence...
February 26, 2018: Journal of Craniofacial Surgery
Liyun Bai, Linlin Li, Kexin Su, Anthony Bleyer, Yuanyuan Zhang, Ping Ji
Maxillofacial injuries can be complex and are clinically important due to their functional and cosmetic significance. Maltreated and missed fractures might cause deformity of the face; thus, accurate evaluation of the fracture provided by X-ray images is critical. In this study, we explore the application of cone-beam computed tomography (CBCT) for diagnosis of severe maxillofacial traumas. A patient with a complex fracture that affects the maxilla, mandible, wall of the maxillary sinus, zygoma, zygomatic arch and nasal bone was diagnosed using 3D reconstruction of CBCT images...
2018: Journal of X-ray Science and Technology
Mia-Michaela Beetge, Vladimir S Todorovic, Anna Oettlé, Jakobus Hoffman, Andre W van Zyl
The greater palatine foramen (GPF) is an important anatomical landmark and has substantial clinical relevance in dental surgery. Knowledge of its precise location and dimensions is required for proper planning of surgical procedures involving the posterior maxilla. We used microfocus computed tomography to determine the location and dimensions of the GPF, and any sex and race variations in those measurements, in 77 human skulls scanned at the South African Nuclear Energy Corporation. Specialized software was used for three-dimensional rendering, segmentation, and visualization of the reconstructed volume data...
February 26, 2018: Journal of Oral Science
Anasuya Guha, Libor Hart, Helena Polachova, Martin Chovanec, Petr Schalek
BACKGROUND: Ameloblastoma represents the most common epithelial odontogenic tumor. Because of the proximity of the maxillary tumors to the orbit and skull base, it should be managed as radically as possible. Maxillectomy mainly via the transfacial or transoral approach represents the most common type of surgical procedure. Drawback of these approaches is limited control of the superiomedial extent of the tumour in the paranasal area. We report the use of a combined endoscopic endonasal and transoral approach to manage maxillary plexiform ameloblastoma in a 48 year old male patient...
February 20, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
Max J H Witjes, Rutger H Schepers, Joep Kraeima
PURPOSE OF REVIEW: This review describes the advances in 3D virtual planning for mandibular and maxillary reconstruction surgical defects with full prosthetic rehabilitation. The primary purpose is to provide an overview of various techniques that apply 3D technology safely in primary and secondary reconstructive cases of patients suffering from head and neck cancer. RECENT FINDINGS: Methods have been developed to overcome the problem of control over the margin during surgery while the crucial decision with regard to resection margin and planning of osteotomies were predetermined by virtual planning...
April 2018: Current Opinion in Otolaryngology & Head and Neck Surgery
Julien Benoit, Kenneth D Angielczyk, Juri A Miyamae, Paul Manger, Vincent Fernandez, Bruce Rubidge
Anomodontia was the most successful herbivorous clade of the mammalian stem lineage (non-mammalian synapsids) during the late Permian and Early Triassic. Among anomodonts, Dicynodontia stands apart because of the presence of an osseous beak that shows evidence of the insertion of a cornified sheath, the ramphotheca. In this study, fourteen anomodont specimens were microCT-scanned and their trigeminal canals reconstructed digitally to understand the origin and evolution of trigeminal nerve innervation of the ramphotheca...
February 21, 2018: Journal of Morphology
Sean S Li, Libby R Copeland-Halperin, Alexander J Kaminsky, Jihui Li, Fahad K Lodhi, Reza Miraliakbari
BACKGROUND:  Computer-aided surgical simulation (CASS) has redefined surgery, improved precision and reduced the reliance on intraoperative trial-and-error manipulations. CASS is provided by third-party services; however, it may be cost-effective for some hospitals to develop in-house programs. This study provides the first cost analysis comparison among traditional (no CASS), commercial CASS, and in-house CASS for head and neck reconstruction. METHODS:  The costs of three-dimensional (3D) pre-operative planning for mandibular and maxillary reconstructions were obtained from an in-house CASS program at our large tertiary care hospital in Northern Virginia, as well as a commercial provider (Synthes, Paoli, PA)...
February 20, 2018: Journal of Reconstructive Microsurgery
Fan Liang, Hyuma Leland, Breanna Jedrzejewski, Allyn Auslander, Seija Maniskas, Jordan Swanson, Mark Urata, Jeffrey Hammoudeh, William Magee
Alveolar cleft reconstruction has historically relied on autologous iliac crest bone grafting (ICBG), but donor site morbidity, pain, and prolonged hospitalization have prompted the search for bone graft substitutes. The authors evaluated bone graft substitutes with the highest levels of evidence, and highlight the products that show promise in alveolar cleft repair and in maxillary augmentation. This comprehensive review guides the craniofacial surgeon toward safe and informed utilization of biomaterials in the alveolar cleft...
February 14, 2018: Journal of Craniofacial Surgery
José Thiers Carneiro Júnior, Paulo Hemerson de Moraes, Douglas Voss de Oliveira, Nayara Cristina Monteiro Carneiro
Patients with considerable maxillomandibular anteroposterior discrepancies and maxillary hypoplasia require corrective treatment through orthognathic surgery. However, in the treatment of severe maxillary retrognathism, it is necessary to reconstruct areas of bone deficiency through grafting techniques in addition to maxillary advancement using only the Le Fort I osteotomy. Treatment in these patients is more challenging and requires high surgical predictability. Alloplastic materials often have been used for the reconstruction of poor bone contours...
January 31, 2018: Journal of Oral and Maxillofacial Surgery
Prerna Pravin Chaulkar, Rohini Salil Mali, Amita Milind Mali, Priya Abhijeet Lele, Pallavi Anil Patil
Background: To assess and compare the effectiveness of two surgical procedures (Beagle's technique and modified Beagle's technique) for the reconstruction of the lost interproximal dental papilla. Materials and Methods: Twenty sites were selected based on the selection criteria which included patients within the age group of 20-50 years and the presence of Class I and Class II recession of the papilla in the maxillary anterior region. They were divided randomly into Group A and Group B...
May 2017: Journal of Indian Society of Periodontology
Valentino Valentini, Luigi Califano, Andrea Cassoni, Della Monaca Marco, Ingrid Raponi, Paolo Priore, Maria Teresa Fadda, Giovanni Dell'Aversana Orabona, Valentina Terenzi
Maxillo-mandibular reconstruction in pediatric patients involves particular functional and cosmetic implications. Attention is required for the craniofacial growth over time, involvement of the permanent dentition, facial symmetry, and donor site morbidity. Our aim is to identify the best reconstructive options for maxilla-mandibular defects in children (<18 years) based on our experience with 25 pediatric patients. We believe that reconstruction has to be performed at the same time as resection in pediatric patients...
February 12, 2018: Journal of Craniofacial Surgery
Antonio Cortese, Mario Caggiano, Giuseppe Pantaleo, Massimo Amato, Pier P Claudio
BACKGROUND: Mandibular reconstruction after ablative surgery is challenging not only for the amount of bone tissue needed following bone loss after benign or malignant tumor surgical removal, but mainly to reconstruct bone shape and structure necessary for subsequent implant insertion to preserve the function (speech, swallowing and chewing) and aesthetic of the lower face. Several different techniques for maxillary bone defects reconstruction have been described. The aim of our work is to describe a new technique for mandibular reconstruction that uses an intramural distractor, which is placed in one surgical step and without the need for a skin incision...
February 9, 2018: Minerva Stomatologica
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