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Mandibulectomy

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https://www.readbyqxmd.com/read/29605084/evaluation-of-bone-resection-margins-of-segmental-mandibulectomy-for-oral-squamous-cell-carcinoma
#1
R W H Smits, Ivo Ten Hove, E A C Dronkers, T C Bakker Schut, H Mast, R J Baatenburg de Jong, E B Wolvius, G J Puppels, S Koljenović
Resection margins are frequently studied in patients with oral squamous cell carcinoma and are accepted as a constant prognostic factor. While most evidence is based on soft tissue margins, reported data for bone resection margins are scarce. The aim of this retrospective study was to evaluate and determine the utility of surgical margins in bone resections for oral cavity squamous cell carcinoma (OCSCC). The status of bone resection margins and their impact on survival was investigated in patients who had undergone segmental mandibulectomy for OCSCC...
March 28, 2018: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29596191/a-20-year-experience-with-202-segmental-mandibulectomy-defects-a-defect-classification-system-algorithm-for-flap-selection-and-surgical-outcomes
#2
Peter G Cordeiro, Peter W Henderson, Evan Matros
BACKGROUND: This study establishes a novel and broadly applicable defect classification system and flap selection algorithm for segmental mandibulectomy defects that emphasize the importance of the soft-tissue deficit, in addition to that of the bony defect. METHODS: Between 1992 and 2011, 202 patients with mandibulectomy defects underwent immediate reconstruction performed by a single surgeon. Details of the bony and soft-tissue defects, recommendations for the most appropriate reconstruction for each clinical scenario, and surgical outcomes are presented...
April 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29544753/a-new-modified-method-for-accurate-mandibular-reconstruction
#3
Chengshuai Yang, Shunyao Shen, Jingyang Wu, Shilei Zhang
Mandibular reconstruction after partial or subtotal resection is considered a challenging procedure that is crucial for facial contour and function. Many reports regarding the reconstruction of mandibular defects have been published over the years. The fibula free flap has become a popular option for mandibular reconstruction since its introduction by Hidalgo in 1989. However, the locations of the reconstructed mandibular angle and the condyle of the fibular bone segments play a crucial role in facial symmetry and function...
February 20, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29531936/novel-condylar-repositioning-method-for-3d-printed-models
#4
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
https://www.readbyqxmd.com/read/29510473/unilateral-rostral-mandibulectomy-for-gingival-vascular-hamartoma-in-two-calves
#5
Takeshi Tsuka, Yoshiharu Okamoto, Naoki Yamamoto, Keiji Hayashi, Takehito Morita, Yuji Sunden, Yusuke Murahata, Kazuo Azuma, Tomohiro Osaki, Norihiko Ito, Tomohiro Imagawa
A 2-month-old female Holstein calf and a 5-month-old female Japanese black calf presented with a gingival vascular hamartoma located in the interdental space between the second and third mandibular incisors in the right and left mandibles, respectively. Osteolytic changes appeared within the mandibular bones adjacent to the masses on radiographic or computed tomographic images. The masses were removed along with affected mandibular bone by unilateral rostral mandibulectomy. Two cases exhibited a normal appetite and grew normally, with no cosmetic changes and recurrences...
March 6, 2018: Journal of Veterinary Science
https://www.readbyqxmd.com/read/29496038/comparison-between-magnetic-resonance-and-computed-tomography-in-detecting-mandibular-invasion-in-oral-cancer-a-systematic-review-and-diagnostic-meta-analysis-mri-x-ct-in-mandibular-invasion
#6
José de Souza Brandão Neto, Felipe Toyama Aires, Rogério Aparecido Dedivitis, Leandro Luongo Matos, Claudio Roberto Cernea
BACKGROUND: Suspicion of mandibular invasion directly influences perioperative strategy, requiring marginal or segmental mandibulectomy, or reconstruction in some cases. This has a considerable impact on outcome and quality of life. The aim of this study was to evaluate the accuracy of magnetic resonance and computed tomography in the prediction of mandibular invasion in patients with oral cavity cancer. METHOD: A systematic review was conducted, including diagnostic studies comparing magnetic resonance imaging with computed tomography in the prediction of bone invasion...
March 2018: Oral Oncology
https://www.readbyqxmd.com/read/29434993/prediction-of-decannulation-oral-intake-recovery-overall-survival-and-lung-metastasis-following-oral-malignant-tumor-resection-and-reconstruction
#7
Hidenori Suzuki, Ikuo Hyodo, Yasuhisa Hasegawa
The present study investigated whether tongue base and mandibular bone defects were associated with the rate of decannulation and oral intake recovery, and survival time, including overall and lung metastasis-free survival time, in patients that underwent oral malignant tumor (OMT) resection with reconstruction. A total of 105 patients that underwent OMT resection with laryngeal preservation and reconstruction were recruited. The extent of defects was classified according to Urken's classification. The rates of decannulation and oral intake recovery were assessed with the Kaplan-Meier method...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29433862/three-dimensionally-printed-bioactive-ceramic-scaffold-osseoconduction-across-critical-sized-mandibular-defects
#8
Christopher D Lopez, J Rodrigo Diaz-Siso, Lukasz Witek, Jonathan M Bekisz, Bruce N Cronstein, Andrea Torroni, Roberto L Flores, Eduardo D Rodriguez, Paulo G Coelho
BACKGROUND: Vascularized bone tissue transfer, commonly used to reconstruct large mandibular defects, is challenged by long operative times, extended hospital stay, donor-site morbidity, and resulting health care. 3D-printed osseoconductive tissue-engineered scaffolds may provide an alternative solution for reconstruction of significant mandibular defects. This pilot study presents a novel 3D-printed bioactive ceramic scaffold with osseoconductive properties to treat segmental mandibular defects in a rabbit model...
March 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29428867/raman-spectroscopy-for-assessment-of-bone-resection-margins-in-mandibulectomy-for-oral-cavity-squamous-cell-carcinoma
#9
Elisa M Barroso, Ivo Ten Hove, Tom C Bakker Schut, Hetty Mast, Cornelia G F van Lanschot, Roeland W H Smits, Peter J Caspers, Rob Verdijk, Vincent Noordhoek Hegt, Robert J Baatenburg de Jong, Eppo B Wolvius, Gerwin J Puppels, Senada Koljenović
OBJECTIVES: The aim of this study was to investigate the potential of Raman spectroscopy for detection of oral cavity squamous cell carcinoma (OCSCC) in bone resection surfaces during mandibulectomy. MATERIALS & METHODS: Raman mapping experiments were performed on fresh mandible resection specimens from patients treated with mandibulectomy for OCSCC. A tumour detection algorithm was created based on water concentration and the high-wavenumber range (2800 cm-1 -3050 cm-1 ) of the Raman spectra...
March 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29349354/awake-intubation-in-a-patient-with-huge-orocutaneous-fistula-a-case-report
#10
Hye-Jin Kim, So-Hyun Kim, Tae-Heung Kim, Ji-Young Yoon, Cheul-Hong Kim, Eun-Jung Kim
Mask ventilation, the first step in airway management, is a rescue technique when endotracheal intubation fails. Therefore, ordinary airway management for the induction of general anesthesia cannot be conducted in the situation of difficult mask ventilation (DMV). Here, we report a case of awake intubation in a patient with a huge orocutaneous fistula. A 58-year-old woman was scheduled to undergo a wide excision, reconstruction with a reconstruction plate, and supraomohyoid neck dissection on the left side and an anterolateral thigh flap due to a huge orocutaneous fistula that occurred after a previous mandibulectomy and flap surgery...
December 2017: Journal of Dental Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29279825/ct-evaluation-of-underlying-bone-sclerosis-in-patients-with-oral-squamous-cell-carcinoma-a-preliminary-retrospective-study
#11
Gyu-Dong Jo, Won-Jin Yi, Min-Suk Heo, Sam-Sun Lee, Soon-Chul Choi, Kyung-Hoe Huh
Purpose: Underlying bone sclerosis is frequently observed in clinical settings when oral squamous cell carcinoma (OSCC) invades the jaw bone. The aim of this study was to assess the prevalence and characteristics of underlying bone sclerosis in patients with OSCC. Materials and Methods: We retrospectively reviewed the computed tomographic (CT) images of 131 patients who underwent mandibulectomy between January 2012 and December 2015 to treat OSCC. The presence, degree, and extent of underlying bone sclerosis were assessed on CT images and correlated with the following imaging patterns of bone invasion: cortical invasion, medullary invasion with a smooth margin, and medullary invasion with an irregular margin...
December 2017: Imaging Science in Dentistry
https://www.readbyqxmd.com/read/29229291/primary-intraosseous-squamous-cell-carcinoma-of-the-mandible-locoregional-control-and-survival-is-significantly-reduced-if-the-tumour-is-more-than-4cm-in-size
#12
Q Shen, Y Chen, S Gokavarapu, W Cao, T Ji
To establish the prognostic factors for primary intraosseous squamous cell carcinoma we designed a retrospective study of patients treated in the head and neck department of a tertiary referral centre in China from 2010-2015. We collected clinical, radiological, and histopathological data from 36 patients treated during the given time period, among which 34 were followed up. There were 22 male and 12 female patients, 13 of whom gave a history of smoking tobacco and four who drank alcohol. All 34 patients were treated by segmental mandibulectomy and neck dissection...
January 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29227794/does-different-mandibulectomy-marginal-vs-segmental-affect-the-prognosis-in-patients-with-oral-squamous-cell-carcinoma
#13
Yu Qiu, Lisong Lin, Bin Shi, Xiaofeng Zhu
PURPOSE: It is unclear whether different mandibular surgical methods affect the prognosis of patients with oral squamous cell carcinoma (OSCC). Accordingly, the authors retrospectively compared the prognosis of patients who underwent marginal mandibulectomy (MG) or segmental mandibulectomy (SG) for OSCC and aimed to determine the factors influencing prognosis. MATERIALS AND METHODS: The authors conducted a retrospective cohort study of 82 patients with OSCC who underwent mandibulectomy at their hospital from January 2001 through January 2015...
November 21, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29183323/cervical-metastasis-of-gingival-carcinoma-misdiagnosed-as-branchiogenic-carcinoma-a-rare-entity-report-of-a-case-and-review-of-literature
#14
Qingjia Sun, Mingxing Chen, Yuxin Sun, Xi Chen, Hongjun Xu, Lingjun Rong, Qiong Wu, Dongdong Zhu
BACKGROUND: A cervical cystic mass is associated with a number of pathologies that present with similar symptoms. These conditions are difficult to differentiate using fine-needle aspiration (FNA), ultrasound (US), computed tomography (CT) and magnetic resonance imaging (MRI). Another dilemma in the differential diagnosis of cervical cystic masses is due to the controversies associated with the existence of branchiogenic carcinoma (BC). BC is an extremely rare disease that must be differentiated from other conditions presenting with cervical cystic masses, especially cystic metastasis from occult primary lesions...
November 28, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29178981/translating-computer-aided-design-and-surgical-planning-into-successful-mandibular-reconstruction-using-a-vascularized-iliac-crest-flap
#15
Lei Zheng, Xiaoming Lv, Jie Zhang, Shuming Liu, Jianguo Zhang, Yi Zhang
PURPOSE: This study evaluated the computer-aided approach to the reconstruction of mandibular defects using a vascularized iliac-crest flap. MATERIALS AND METHODS: From December 2015 to October 2016, 14 patients (8 men and 6 women) 18 to 64 years old (median age, 29 yr) were treated at the Peking University School and Stomatology Hospital (Beijing, China). Biopsy specimens from all patients were subjected to histologic examination before segmental mandibulectomy...
November 3, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29165823/identification-of-predisposing-factors-for-osteonecrosis-of-the-jaw-after-marginal-mandibulectomy-in-the-surgical-management-of-oral-squamous-cell-carcinoma
#16
Ran Ito, Jung-Ju Huang, Wei-Chuan Hsieh, Huang-Kai Kao, William Wei-Kai Lao, Ku-Hao Fang, Yenlin Huang, Yu-Liang Chang, Ming-Huei Cheng, Kai-Ping Chang
BACKGROUND: The aim of this study is to evaluate osteonecrosis of the jaw (ONJ) with the extent of marginal mandibulectomy. METHODS: Between January 2006 and December 2012, 3087 patients undergoing ablative resection were consecutively enrolled. Among them, 345 cases undergoing marginal mandibulectomy were retrospectively reviewed. RESULTS: The occurrence of ONJ was 5.51% and associated with body mass index, overall stage, diabetes, concomitant mandibulotomy, and radiotherapy (P = 0...
November 22, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29135994/perioperative-risk-factors-for-postoperative-pneumonia-after-major-oral-cancer-surgery-a-retrospective-analysis-of-331-cases
#17
Jieyun Xu, Jing Hu, Pei Yu, Weiwang Wang, Xingxue Hu, Jinsong Hou, Silian Fang, Xiqiang Liu
OBJECTIVE: Postoperative pneumonia (POP) is common and results in prolonged hospital stays, higher costs, increased morbidity and mortality. However, data on the incidence and risk factors of POP after oral and maxillofacial surgery are rare. This study aims to identify perioperative risk factors for POP after major oral cancer (OC) surgery. METHODS: Perioperative data and patient records of 331 consecutive subjects were analyzed in the period of April 2014 to March 2016...
2017: PloS One
https://www.readbyqxmd.com/read/29114352/bone-allograft-an-option-for-total-mandibular-reconstruction
#18
Masoud Fallahi Motlagh, Mohamad Bayat, Siamak Naji
Total mandibular reconstruction is one of the most challenging modalities in maxillofacial surgery. In this article, we try to introduce a method of total mandible reconstruction. We report a 25-year-old male patient with complete involvement of the mandible by Langerhans cell tumor. The patient underwent total mandibulectomy and reconstruction with bone allograft harvested from a donor who had died the day before. The patient has good functional and aesthetic results in a long time. It seems that bone allograft can be a good alternative to other methods in total mandibular reconstruction...
December 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/29066386/use-of-cable-guide-while-performing-segmental-mandibulectomy-using-gigli-saw
#19
A Rai, M M Khan, A Jain
Segmental mandibulectomies has been performed most commonly in patients having benign or malignant pathologies of mandible. Gigli saw is used for performing segmental mandibulectomy. The two main challenging tasks in the use of Gigli saw includes passage of the device around the bone which is to be cut and the preservation of the underlying soft tissue from getting damaged by the saw during movement. Hence, we propose the use of a "Cable guide with hook" which helps in easy passage of Gigli saw around mandible...
October 21, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29051537/microarray-gene-expression-of-periosteum-in-spontaneous-bone-regeneration-of-mandibular-segmental-defects
#20
Zheyi Li, Juli Pan, Jinling Ma, Zhen Zhang, Yuxing Bai
Spontaneous bone regeneration could occur to reestablish mandibular bony continuity in patients who underwent partial or total mandibulectomy for tumors with periosteum-preserving. However, scarce data is available related to the precise role of periosteum in this bone regeneration. Therefore we aimed to investigate the gene expression of periosteum that were involved in the mandibular bone regeneration. Mandibular segmental defects were created in six mini-pigs with periosteum preserved. The periosteum of defects and control site were harvested at 1 and 2 weeks...
October 19, 2017: Scientific Reports
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