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Maxillary reconstruction

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https://www.readbyqxmd.com/read/29151373/nasoseptal-flap-for-palatal-reconstruction-after-hemi-maxillectomy-case-report
#1
M K Alwashahi, P Battaglia, M Turri-Zanoni, P Castelnuovo
OBJECTIVE: Palatal reconstruction following maxillectomy is a surgical challenge, and a nasoseptal flap is a feasible approach. This paper reports the first known successful clinical case of a nasoseptal pedicle flap applied for the reconstruction of maxillary bone following hemi-maxillectomy. CASE REPORT: This report describes hemi-maxillectomy in a 60-year-old Italian male diagnosed with stage IV squamous cell carcinoma of the left maxilla. Endoscopic transnasal extended medial maxillectomy was performed, followed by a transoral modified midfacial degloving technique for removal of the maxillary bone...
November 20, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29130414/occlusal-angles-of-equine-incisors
#2
Laura Listmann, Patricia Schrock, Klaus Failing, Carsten Staszyk
The angulation of equine incisors is frequently used as a parameter for dental corrections. However, the term incisor angle is only vaguely defined, and no studies exist presenting a series of reliable measurements in individual incisors of multiple horses. The aim of this study was to establish an exact method to determine incisor angles and to test whether clinically accessible landmarks (facial crest and bars) are suitable to estimate incisor angles. Eighteen horses were used to create 3-dimensional (3D) reconstructions of the skulls from computed tomography (CT) data sets...
December 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/29115677/applicability-of-3d-dental-reconstruction-in-cervical-odontometrics
#3
Seyedeh M Kazzazi, Elena F Kranioti
OBJECTIVES: The objective of this study was to assess the accuracy, reliability, and reproducibility of computed tomography (CT) images in measuring cervical mesiodistal and buccolingual tooth sizes, by comparing the values obtained by 3D virtual models from CT images with those obtained using digital calipers. MATERIALS AND METHODS: In total, 530 maxillary and mandibular teeth of 51 individuals from two Iron Age sites were scanned using a Siemens Somatom sensation 64-slice computed tomography machine, and the images were reconstructed and measured...
November 8, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29109841/mandibular-reconstruction-with-lateral-tibial-bone-graft-an-excellent-option-for-oral-and-maxillofacial-surgery
#4
Ana Lucia Carpi Miceli, Livia Costa Pereira, Thiago da Silva Torres, Mônica Diuana Calasans-Maia, Rafael Seabra Louro
Autogenous bone grafts are the gold standard for reconstruction of atrophic jaws, pseudoarthroses, alveolar clefts, orthognathic surgery, mandibular discontinuity, and augmentation of sinus maxillary. Bone graft can be harvested from iliac bone, calvarium, tibial bone, rib, and intraoral bone. Proximal tibia is a common donor site with few reported problems compared with other sites. The aim of this study was to evaluate the use of proximal tibia as a donor area for maxillofacial reconstructions, focusing on quantifying the volume of cancellous graft harvested by a lateral approach and to assess the complications of this technique...
December 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/29108751/three-dimensional-reconstructions-of-ct-scans-and-cone-beam-ct-of-impacted-maxillary-canines-in-order-to-locate-areas-of-ankylosis-before-orthodontic-traction
#5
Florian Plaisance, Jean-Baptiste Kerbrat, Patrick Goudot
PURPOSE: The aim of this study was to model impacted maxillary canines and determine whether areas of ankylosis were present before undertaking orthodontic traction. MATERIAL AND METHODS: Amira/ResolveRT™ software, version 5.0, by FEI Company is a meshing and surface-rendering program that was used to produce three-dimensional reconstructions from CT scans and cone beam images of the impacted canines of 30 patients (10 cone beam files and 20 CT scan files). RESULTS AND DISCUSSION: The presence of zones of ankylosis on the roots of certain impacted canines is revealed by the inversion of the direction of meshing on the tooth surface and on a larger scale by invagination of bone tissue into the tooth tissue at various densities measured in Hounsfield units by the AMIRA™ software program...
November 3, 2017: International Orthodontics
https://www.readbyqxmd.com/read/29095784/use-of-bone-allograft-with-or-without-bone-marrow-aspirate-concentrate-in-appositional-reconstructions-a-tomographic-and-histomorphometric-study
#6
Suelen Castro Lavareda Corrêa, Juliana Elias de Sousa, Paulo José Pasquali, Luís Guilherme Scavone de Macedo, Antonio Carlos Aloise, Marcelo Lucchesi Teixeira, André Antonio Pelegrine
OBJECTIVES: To evaluate bone allograft associated to bone marrow aspirate concentrate (BMAC), in maxillary reconstructions. MATERIALS AND METHODS: Ten patients with alveolar bone deficiency in the anterior maxilla were randomly divided into control group (CG) and test group (TG). A bone block allograft was placed in both groups, but the graft was impregnated with BMAC only in TG. Computed tomography was performed 7 days (T1) and 6 months (T2) after the grafting procedure, and volume and bone density measurements were carried out...
November 1, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29092758/navigation-guided-resection-of-maxillary-tumours-the-accuracy-of%C3%A2-computer-assisted-surgery-in-terms-of-control-of-resection-margins%C3%A2-a-feasibility-study
#7
Achille Tarsitano, Francesco Ricotta, Gennaro Baldino, Giovanni Badiali, Angelo Pizzigallo, Valerio Ramieri, Piero Cascone, Claudio Marchetti
INTRODUCTION: Surgical treatment of maxillary tumours is often highly complex. The three-dimensional anatomy of the mid-face renders both correct intraoperative orientation and adequate oncological safety difficult to obtain. Recently, computer-assisted techniques and intraoperative navigation have been applied to oncological surgery treating head and neck cancer. However, only a few studies have explored whether preoperative virtual resection planning and intraoperative control of resection margins allow assessment of the surgical margins of the tumour...
September 30, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29090202/reconstruction-of-large-orbital-floor-defect-caused-by-maxillary-sinus-mucocele
#8
Seung Bum Pyo, Jin Kyung Song, Hong Sil Ju, Seong Yoon Lim
Maxillary sinus mucocele can occur due to many medical factors such as chronic infection, allergic sinonasal disease, trauma, and previous surgery. However, it occurs mainly after Caldwell-Luc operation, usually more than 10 years after surgery. There are a few cases of maxillary sinus mucocele with ocular symptoms. Also, a case causing ocular symptoms because of invasion to the orbital floor is rare. Therefore, we report a case of a 55-year-old male patient who underwent Caldwell-Luc operation about 30 years ago...
September 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/29075779/reconstruction-the-final-dimension-in-head-and-neck-surgery-the-2017-hayes-martin-lecture
#9
Mark K Wax
The Hayes Martin lecture is dedicated to a giant who was essential to developing the surgical management of patients with head and neck cancer. Since that time, advents in anesthesia, intensive care, and improved diagnostic abilities have improved our ability to surgically manage and treat head and neck cancer. The original paradigm of resection, reconstruction, and rehabilitation was formulated as we endeavored to develop paradigms of treatment for our patients. We have maximized our resective and reconstructive abilities...
October 26, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29043866/three-dimensional-finite-element-analysis-of-glass-fiber-and-cast-metal-posts-with-different-alloys-for-reconstruction-of-teeth-without-ferrule
#10
Fellippo Ramos Verri, Marlice Hayumi Theles Okumura, Cleidiel Aparecido Araujo Lemos, Daniel Augusto de Faria Almeida, Victor Eduardo de Souza Batista, Ronaldo Silva Cruz, Hiskell Francine Fernandes Oliveira, Eduardo Piza Pellizzer
The aim of this study was to evaluate different materials for restoration of teeth without ferrule by three-dimensional (3D) finite element analysis (FEA). Five models simulating the maxillary central incisor and surrounding bone were simulated according to the type of post: glass fibre post (GFP) or cast metal post (CMP) with different alloys such as gold (Au), silver-palladium (AgPd), copper-aluminum (CuAl) and nickel-chromium (NiCr). Models were designed using Invesalius and Rhinoceros. FEAs were made using FEMAP and NeiNastran, with an applied axial force of 100 N and oblique occlusal load at 45°...
October 18, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29023617/socket-shield-technique-for-implant-placement-in-the-esthetic-zone-a-case-report
#11
Matthias Petsch, Benedikt Spies, Ralf-Joachim Kohal
Improvements in implant design, placement protocols, and sequences for reconstruction in the anterior region have enabled clinicians to provide their patients with esthetically acceptable results. Yet from a clinical standpoint, the predictable preservation of the peri-implant soft tissue remains challenging and tissue grafting is often necessary to compensate for ridge contour changes in postextraction sites. In animal and clinical studies, the socket shield technique has shown its potential to prevent resorption of buccal tissues...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29023290/fascial-graft-repair-of-wide-bilateral-cleft-lip-deformity
#12
Husam Hosny, Ayman Husein Abdelsattar
Wide bilateral cleft lip deformity reconstruction represents a special difficulty as it affects the lip, nose, and maxillary segments making single-stage reconstruction sometimes unobtainable. Many surgical and nonsurgical techniques have been prescribed to facilitate the definitive repair. Although some of these techniques proved to be useful, they have their inherent limitations and add another treatment step with all its possible complications and costs. The authors present a new method to address muscle layer repair in 1-stage procedure...
October 11, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28990255/role-of-surgery-in-the-treatment-of-osteoradionecrosis-and-its-complications-after-radiotherapy-for-nasopharyngeal-carcinoma
#13
Wen Bo Huang, Stanley Thian Sze Wong, Jimmy Yu Wai Chan
BACKGROUND: The purpose of this study was to review the efficacy of surgery for patients with osteoradionecrosis (ORN) after radiotherapy for nasopharyngeal carcinoma (NPC). METHODS: Between 2000 and 2016, we identified 162 patients with skull base ORN, among which 58 patients required surgery. A retrospective medical chart review was performed and the indications and results of surgical interventions were recorded. RESULTS: All surgeries were performed for the treatment of secondary complications of ORN, including central nervous system (CNS) infection (48...
October 9, 2017: Head & Neck
https://www.readbyqxmd.com/read/28987843/the-endoscopic-buccal-fat-pad-flap-for-closure-of-skull-base-defects-a-report-of-five-cases
#14
Daniel W Flis, John F Burke, Arnau Benet, Phillip Theodosopoulos, Manish Aghi, Ivan H El-Sayed
OBJECTIVE: To demonstrate the clinical utility of the buccal fat pad to close a variety of skull base defects. METHODS: A retrospective chart review of 5 consecutive patients who underwent endoscopic cranial base surgery with endoscopic harvest of BFPF pedicled along the internal maxillary artery for reconstruction of the skull base from October 2013 until November 2014. RESULTS: All 5 patients had complete take of the BFPFs with mucosalization on post-operative follow up with no reported complications or CSF leaks...
October 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28981207/medication-related-osteonecrosis-of-the-posterior-maxilla-surgical-treatment-using-a-combined-transnasal-endoscopic-and-intraoral-approach-our-experience-with-seven-consecutive-patients
#15
Pasquale Procacci, Massimo Albanese, Lorenzo Trevisiol, Vittorio Favero, Dario Bertossi, Fabio Lonardi, Antonio D'Agostino, Erminia Manfrin, Pier Francesco Nocini
Upper jaw MRONJ if not correctly treated can lead to serious complication. Upper jaw MRONJ is frequently associated with maxillary sinusitis, the disease can spread to other paranasal sinuses. Combined approach is the most reliable procedure to treat odontogenic sinusitis; although MRONJ associated sinusitis is considered odontogenic there is no report in literature describing combined approach to treat MRONJ-induced sinusitis. Buccal fat pad represents the best reconstructive option to close the bony defect...
October 5, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28972882/immediate-reconstruction-of-failed-implants-in-the-esthetic-zone-using-a-flapless-technique-and-autogenous-composite-tuberosity-graft
#16
Gerry M Raghoebar, Henny J A Meijer, Baucke van Minnen, Arjan Vissink
We describe a technique for immediate reconstruction of bone after removal of failed dental implants in the esthetic region to optimize the esthetic outcome of retreatment. We conducted a study of 16 consecutive patients in whom the bony defect resulting from implant removal was immediately reconstructed with a combined autogenous bone and soft tissue graft harvested from the maxillary tuberosity. After a healing period of 3 months, implants were inserted. At 1 year after placement of the definitive restoration, no implants had been lost, the peri-implant tissues were healthy, the aesthetics scored with the pink esthetic score were favorable, and the patients were satisfied...
September 11, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28968334/three-dimensional-reconstruction-of-the-distribution-of-neurons-contributing-to-ophthalmic-maxillary-and-mandibular-nerves-in-the-trigeminal-ganglion-of-experimental-model
#17
Wenbin Wei, Zixiang Han, Minjie Chen, Weijie Zhang, Ying Chai, Yiwen Wang, Wenhao Zhang
The authors introduce a new method to build a three-dimensional (3D) model of the 3 branches of the trigeminal nerve in the trigeminal ganglion of rabbit with 3 different kinds of fluorescence. Ten adult New Zealand rabbits of both sexes weighing between 2.0 and 3.0 kg were used in the experiment. Then through an operation under general anesthesia, the maxillary and mandibular nerves were exposed, and red and gold fluorescence were applied to investigate the neurons of the maxillary and mandibular nerves...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28954209/a-micro-computed-tomographic-micro-ct-analysis-of-the-root-canal-morphology-of-maxillary-third-molar-teeth
#18
Iwona M Tomaszewska, Bartosz Leszczyński, Andrzej Wróbel, Tomasz Gładysz, Hal F Duncan
INTRODUCTION: The aim of this study was to analyze the root canal morphology of maxillary third molars (MTMs) using micro-computed tomography (micro-CT). MATERIALS AND METHODS: Seventy-eight consecutively-extracted human MTMs were scanned using micro-CT (spatial resolution=13.68μm per pixel). Dedicated software (SkyScan(®)) was used to create virtual reconstructions and perform 3D-analysis. A range of anatomical features were assessed; externally (root number, length, fusion, curvature, apex), within the pulp chamber (distance between canal orifices, floor thickness) and within the root canal system (root canal number, classification, ramifications, isthmuses, apical constriction)...
September 24, 2017: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/28953152/secondary-maxillary-and-orbital-floor-reconstruction-with-a-free-scapular-flap-using-cutting-and-fixation-guides-created-by-computer-aided-design-computer-aided-manufacturing
#19
Daiki Morita, Toshiaki Numajiri, Shoko Tsujiko, Hiroko Nakamura, Ryo Yamochi, Yoshihiro Sowa, Makoto Yasuda, Shigeru Hirano
Computer-aided design/computer-aided manufacturing (CAD/CAM) guides are now widely used in maxillofacial reconstruction. However, there are few reports of CAD/CAM guides being used for scapular flaps. The authors performed the secondary maxillary and orbital floor reconstruction using a free latissimus dorsi muscle, cutaneous tissue, and scapular flap designed using CAD/CAM techniques in a 72-year-old man who had undergone partial maxillectomy four years previously. The patient had diplopia, the vertical dystopia of eye position, and a large oral-nasal-cutaneous fistula...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28944378/treatment-of-single-and-multiple-miller-class-i-and-iii-gingival-recessions-at-crown-restored-teeth-in-maxillary-esthetic-areas
#20
Anton Sculean, Raluca Cosgarea, Christos Katsaros, Nicole Birgit Arweiler, Richard John Miron, Herbert Deppe
OBJECTIVE: To clinically evaluate the outcomes following surgical coverage of single and multiple Miller Class I and III gingival recessions at crown-restored teeth in the esthetic area by means of the modified coronally advanced tunnel (MCAT). METHOD AND MATERIALS: Eight systemically healthy patients (5 females) with a total of 23 single or multiple maxillary Miller Class I or III gingival recessions were consecutively treated with MCAT in conjunction with a subepithelial connective tissue graft (SCTG)...
September 22, 2017: Quintessence International
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