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Mandibulectomy

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https://www.readbyqxmd.com/read/28218024/segmental-mandibulectomy-in-the-dog
#1
Curt Ritchie
This step-by-step manuscript describes surgical technique of segmental mandibulectomy in the dog. This surgical procedure may be indicated for the excision of small- to mid-sized neoplasms or as a salvage procedure for mandibular fractures. Long-term postoperative complications are not common and cosmetic appearance following the procedure is generally acceptable to the pet owner.
December 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28212127/surgical-management-of-mandibular-intraosseous-schwannomas
#2
Anthony DeLeonibus, Bahar Bassiri Gharb, Francis Papay, James E Zins, Antonio Rampazzo
Intraosseous schwannomas of the mandible are rare tumors that usually arise from peripheral nerve sheaths of the main trunk or branches of the inferior alveolar nerve (IAN).A systematic review of the English literature through PubMed was conducted from 1945 to 2016. Forty-nine patients of mandibular intraosseous schwannomas were identified. The most common location of the tumor was the posterior mandible (61.2%). There were 28 patients in whom the tumor involved the IAN (57.1%). The most commonly performed procedures included enucleation through a mucoperiosteal flap and a bone window (73%), curettage (10%), segmental mandibulectomy (10%), and sagittal split ramus osteotomy (6%)...
February 16, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28210412/reconstruction-of-a-combined-maxillectomy-and-segmental-mandibulectomy-defect-in-a-seven-year-old-with-a-single-free-fibula-osteocutaneous-flap
#3
Shawn T Joseph, Krishnakumar Thankappan, Subramania Iyer
Combined upper alveolectomy and segmental mandibulectomy are complex defects. Reconstruction of these defects is usually suboptimal. We describe the case of a pediatric patient with vessel-depleted neck with recurrent vascular malformation involving the ramus and coronoid process of mandible and a previous history of maxillectomy and a reconstruction with anterolateral thigh flap. The patient underwent wide resection. The defects involving the upper alveolus and mandible were simultaneously reconstructed with a single free fibula flap...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28176614/acanthomatous-ameloblastoma-with-atypical-foci-in-five-dogs
#4
Jennifer L Malmberg, Elizabeth W Howerth, Barb E Powers, Paula A Schaffer
Acanthomatous ameloblastoma is a common, locally invasive, nonmetastasizing tumor of the canine oral cavity. The long-term prognosis for canine acanthomatous ameloblastoma is good if complete excision can be achieved, usually by maxillectomy or mandibulectomy. A variant of acanthomatous ameloblastoma with atypical foci was noted in 5 dogs. There was no age, breed, or sex predisposition. Atypical cells were pleomorphic with a high mitotic rate. They were immunohistochemically negative for cytokeratin, vimentin, melan A, PNL2, CD3, Pax5, CD18, chromogranin A, and synaptophysin...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28060092/functional-reconstruction-of-nonsegmental-mandibular-defect-with-fresh-frozen-bone-graft-and-delayed-implants-placement
#5
Tommaso Bucci, Pier Francesco Nocini
The loss of teeth and the alveolar bone secondary to resection of mandibular tumors may lead to unfavorable esthetic and functional results with a significant impairment of mastication.The authors report a 53-year-old patient with recurrence of ameloblastoma who was submitted to marginal mandibulectomy. Bone defect was immediately reconstructed using fresh frozen bone graft and 9 months after reconstruction 3 dental implants were inserted in the grafted bone. After 6 months, dental rehabilitation was achieved using a fixed implant-supported prosthesis...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28011180/influence-of-bone-invasion-on-outcomes-after-marginal-mandibulectomy-in-squamous-cell-carcinoma-of-the-oral-cavity
#6
Ivana Petrovic, Pablo H Montero, Jocelyn C Migliacci, Frank L Palmer, Ian Ganly, Snehal G Patel, Jatin P Shah
INTRODUCTION: Marginal mandibulectomy (MM) is indicated for oral cavity squamous cell carcinomas (OCSCC) that abut or minimally erode the mandible without gross invasion. Successful implementation of MM is predicated on accurate patient selection and appropriate adjuvant treatment based on well-known host and tumor characteristics. The incidence of microscopically diagnosed bone involvement in MM specimens and its implications on outcomes have however not been reported in large contemporary series...
February 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28005727/the-effect-of-mandibulectomy-and-mandibulotomy-on-cochlear-function
#7
Sercan Gode, Isa Kaya, Goksel Turhal, Tayfun Kirazli, Cem Bilgen, Mehmet Fatih Ogut, Kerem Ozturk
Mandibulectomy and mandibulotomy procedures are performed with the oscillating saw and the acoustic energy generated during the osteotomies is transferred to the cochlea via temporomandibular joint and air conduction. The aim of this study was to assess the effect of mandibulectomy and mandibulotomy on cochlear function. This study was carried out on 15 patients who underwent at an otolaryngology department of a tertiary medical center between January 2013 and August 2015. The study was designed as a prospective study...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005652/facial-nerve-preservation-during-giant-mandibular-tumor-surgery
#8
Yun Zhu, Wanlin Xu, Chenping Zhang, Wenjun Yang
Marginal mandibular branch of facial nerve is easy to be ignored and injured in patients undergoing giant mandibular tumor resections. In this article, a 30-year-old patient with a giant tumor in the left mandible, an operation of segmental mandibulectomy and reconstruction was given, and the surgery was assisted by intraoperative facial nerve monitoring. During surgery, the marginal mandibular branch of the facial nerve was detected and well preserved. The patient showed no facial function injury postoperation...
December 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27990510/mandibular-osteomyelitis-associated-with-dental-implants-a-case-series
#9
Gabriel Semel, Amir Wolff, Dekel Shilo, Sharon Akrish, Omri Emodi, Adi Rachmiel
PURPOSE: To present a series of rare and serious complications associated with endosseous implant therapy. MATERIALS AND METHODS: Five cases of mandibular osteomyelitis emerging in dental implant insertion sites are presented. In three cases, the clinical signs and symptoms of osteomyelitis occurred almost immediately following implant insertion. All cases occurred in patients with stable pre-existing medical conditions. Three of the patients were females and two were males, all of whom were in their sixth and seventh decades of life...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27893003/navigation-guidance-during-free-flap-mandibular-reconstruction-a-cadaveric-trial
#10
R Alex Harbison, Xiao-Feng Shan, Zachary Douglas, Scott Bevans, Yangming Li, Kris S Moe, Neal Futran, Jeffrey J Houlton
Importance: Segmental mandibulectomy for tumors that distort the buccal surface of the mandible present a reconstructive challenge. Objective: To determine whether mandible alignment after navigation-guided mandible reconstruction is better than alignment after non-template-assisted freehand reconstruction and as good as template-assisted reconstruction in a cadaveric trial. Design, Setting, and Participants: A cadaveric trial using 10 specimens was conducted at a tertiary academic center...
November 17, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27888641/carotid-artery-and-lower-cranial-nerve-exposure-with-increasing-surgical-complexity-to-the-parapharyngeal-space
#11
Ana M Lemos-Rodriguez, Satyan B Sreenath, Rounak B Rawal, Lewis J Overton, Zainab Farzal, Adam M Zanation
OBJECTIVES/HYPOTHESIS: To investigate the extent of carotid artery exposure attained, including the identification of the external carotid branches and lower cranial nerves in five sequential external approaches to the parapharyngeal space, and to provide an anatomical algorithm. STUDY DESIGN: Anatomical study. METHODS: Six latex-injected adult cadaver heads were dissected in five consecutive approaches: transcervical approach with submandibular gland removal, posterior extension of the transcervical approach, transcervical approach with parotidectomy, parotidectomy with lateral mandibulotomy, and parotidectomy with mandibulectomy...
November 26, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27879602/health-related-quality-of-life-following-reconstruction-for-common-head-and-neck-surgical-defects
#12
Wess A Cohen, Claudia R Albornoz, Peter G Cordeiro, Jennifer Cracchiolo, Elizabeth Encarnacion, Meghan Lee, Michele Cavalli, Snehal Patel, Andrea L Pusic, Evan Matros
BACKGROUND: Improved understanding and management of health-related quality of life represents one of the greatest unmet needs for patients with head and neck malignancies. The purpose of this study was to prospectively measure health-related quality of life associated with different anatomical (head and neck) surgical resections. METHODS: A prospective analysis of health-related quality of life was performed in patients undergoing surgical resection with flap reconstruction for stage II or III head and neck malignancies...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27861470/-mandibular-osteoradionecrosis-orn-as-a-side-effect-of-head-and-neck-cancer-treatment-factors-that-induce-it
#13
José Francisco Gallegos-Hernández, Alejandro Reyes-Vivanco, Héctor Arias-Ceballos, Gerardo Gabriel Minauro-Muñoz, Alma Lilia Ortiz-Maldonado, Daniel Israel García-Ruiz, Martín Hernández-Sanjuán
INTRODUCTION: Osteoradionecrosis of the mandible is a relatively common complication in patients with head and neck cancer undergoing radiotherapy or concomitant chemoradiotherapy, characterized by exposure of the mandibular bone either in the mouth or in the facial skin, with no improvement with conservative treatment for six months. The risk factors are radiotherapy in head and neck region, lack of dental prophylaxis before treatment and dental extraction. MATERIAL AND METHODS: Retrospective observational study analyzing incidence and etiologic factors of osteoradionecrosis in 250 patients undergoing radiotherapy or combined treatment of cervicofacial area between 2002 and 2010...
November 2016: Gaceta Médica de México
https://www.readbyqxmd.com/read/27859596/osteosarcoma-in-a-patient-with-pseudohypoparathyroidism-type-1b-due-to-paternal-uniparental-disomy-of-chromosome-20q
#14
Hye-Sun Park, Chang Gon Kim, Namki Hong, Seok Joo Lee, Da Hea Seo, Yumie Rhee
It is assumed that a persistent high level of parathyroid hormone (PTH) might have a relation with bone malignancy. However, there has been no report of osteosarcoma associated with pseudohypoparathyroidism type 1b (PHP1b), which is accompanied by high PTH. PHP1b is the result of resistance to PTH in certain end-organ tissues, especially the kidney; the response in bone is unaffected because it normally expresses stimulatory G protein equally from both parental alleles. A 21-year-old male, presenting with gum swelling at the right mandible, was referred to a dental clinic...
November 18, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27849104/biomechanical-comparison-of-two-ostectomy-configurations-for-partial-mandibulectomy
#15
Daniel Linden, Brad M Matz, Ramsis Farag, Harry W Boothe, D Michael Tillson, Ralph Henderson
OBJECTIVE: To determine the stiffness and load to failure of two different ostectomy configurations using canine mandibles. STUDY DESIGN: Cadaveric biomechanical assessment. ANIMALS: Paired mandibles (n = 30). METHODS: Standardized partial ostectomies were created on the alveolar surface of 30 mandibles. Samples were randomly assigned to right-angled (n = 15) or crescentic ostectomy (n = 15). Excision spanned the mesial aspect of the fourth premolar tooth to the distal aspect of first molar tooth...
November 16, 2016: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/27832571/avoiding-a-tracheostomy-after-mandibulectomy-and-free-flap-reconstruction-using-a-staged-reintubation-catheter
#16
A Ghimouz, J Rodriguez, K Abdelhafidh, P Goater
No abstract text is available yet for this article.
November 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27822241/surgical-management-of-extensive-oral-tumors-by-bilateral-rostral-mandibulectomy-in-two-dogs
#17
M Shafiuzama, M S Sabarish Babu, N Krishnaveni, P Manoj Prabhakar, S Hemalatha, N J D Souza
Two dogs of different age groups were presented with the history of oral growth, bleeding, excessive salivation, bad breath, inappetance and dysphagia. Physical examination revealed cauliflower like reddish growth in the gingiva enclosing the mandibular incisiors and canine tooth. Haematology and serum biochemical profiles were within the normal range. Plain radiography revealed extensive growth involving the lower mandible and gingiva. Hence rostral mandibulectomy was performed to excise the tumor mass. The dogs recovered uneventfully after surgery with no difficulty in feeding liquid and semisolid diet...
2016: Iranian journal of veterinary research
https://www.readbyqxmd.com/read/27788172/retrospective-review-of-the-anaesthetic-management-of-maxillectomies-and-mandibulectomies-for-benign-tumours-in-sub-saharan-africa
#18
Michelle C White, Katherine C Horner, Peggy S Lai
BACKGROUND: Safe anaesthesia is a crucial component of safe surgical care, yet anaesthetic complications are common in resource-limited settings. We describe differences in anaesthetic needs for Mandibulectomy vs. Maxillectomy in three sub-Saharan African countries. MATERIALS AND METHODS: Retrospective review of patients undergoing minor Mandibulectomy, major Mandibulectomy, or Maxillectomy in Togo, Guinea and Republic of the Congo. Surgeries were performed on the Africa Mercy, an international non-governmental hospital ship...
2016: PloS One
https://www.readbyqxmd.com/read/27763947/prosthetic-rehabilitation-after-fibular-free-flap-surgery-of-mandibular-defects-in-a-patient-with-oral-squamous-cell-carcinoma
#19
Hyung-In Yoon
OBJECTIVE: This report is to present the treatment procedure and clinical considerations of prosthodontic management of a patient who had undergone a partial mandibulectomy and fibular free flap surgery. DESIGN: A 59-year-old man with a squamous cell carcinoma received a partial mandibular resection. Microsurgical reconstruction with a fibular free flap surgery and implant-supported zirconia-fixed prosthesis produced by computer-aided manufacturing led to successful results for the oral rehabilitation of mandibular defects...
October 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27757681/a-unique-procedure-of-joined-transoral-and-retropharyngeal-high-cervical-approach-jtrc-without-mandibulectomy-for-treating-upper-cervical-neoplasm-involving-both-c2-and-c3
#20
Jianhua Wang, Yang Lu, Hong Xia, Qingshui Yin
PURPOSE: To investigate a unique procedure of joined transoral and retropharyngeal high cervical approach (JTRC) without mandibulectomy for treating upper cervical neoplasm involving both C2 and C3. METHOD: A 23-year-old male patient had neoplasma involving C2 and C3 that caused pathologic fracture of C2 and bony destruction of C3. The neoplasm excision and cervical spine reconstruction were performed through JTRC approach without splitting up the mandible. In this approach, there were two surgery windows that could be applied in turns by closing or opening the mouth to gain an ideal exposure...
October 18, 2016: European Spine Journal
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