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Jaw Necrosis

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https://www.readbyqxmd.com/read/28424735/tongue-necrosis-secondary-to-giant-cell-arteritis-a-case-report-and-literature-review
#1
Rafael Alex Barbosa de Siqueira Sobrinho, Karolina Cayres Alvino de Lima, Helena Carvalho Moura, Mônica Modesto Araújo, Christyanne Maria Rodrigues Barreto de Assis, Pedro Alves da Cruz Gouveia
Giant cell arteritis is a form of vasculitis involving the medium- and large-sized arteries that chiefly affects older people. Clinical findings are headache, jaw claudication, fever, pain, and thickening of the temporal artery. The most feared complication is visual loss due to impairment of the ophthalmic artery and posterior ciliary arteries. This a case report of an 85-year-old male presenting with headache and jaw pain, who was admitted with tongue necrosis as an initial manifestation of giant cell arteritis...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28365078/macrophage-and-osteoclast-polarization-in-bisphosphonate-associated-necrosis-and-osteoradionecrosis
#2
Falk Wehrhan, Patrick Moebius, Kerstin Amann, Jutta Ries, Raimund Preidl, Friedrich W Neukam, Manuel Weber
PURPOSE: Bisphosphonate-related osteonecrosis of the jaw (BRONJ) is a complication of antiresorptive therapy with nitrogen-containing bisphosphonates (BP). With various suggestions as to pathogenesis, the etiology of BRONJ is not sufficiently understood. Osteoclasts and their precursors, that is, macrophages, are the main target cells of BP. BP can repolarize regeneration- and healing-associated M2 macrophages towards the tissue destructive M1-type. The current study aims to elucidate differences in macrophage and osteoclast polarization in BRONJ, osteoradionecrosis (ORN) and healthy control specimens...
March 1, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28325366/whorling-cellular-perineurioma-a-previously-undescribed-variant-closely-mimicking-monophasic-fibrous-synovial-sarcoma
#3
Michael Michal, Dmitry V Kazakov, Abbas Agaimy, Marta Hosova, Kvetoslava Michalova, Petr Grossmann, Petr Steiner, Faruk Skenderi, Semir Vranic, Michal Michal
The authors present a distinctive perineurioma (PN) variant which morphologically strongly resembles monophasic fibrous synovial sarcoma (MSS). The patients were 3 males and 1 female. The age ranged from 15 to 61years (mean: 44years). Locations included the sole, lower jaw, palm and foot. The tumor size ranged from 1.3cm to 2.5cm in the largest dimension (mean 1.8cm). Morphologically, all tumors had an identical, monotonous appearance. The perineurial cells were closely packed and created a confluent cellular whorls and/or sheets in a scarce stroma, with only focally discernible long, slender cytoplasmic processes typical for perineurial differentiation...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28296984/implant-stability-and-bone-characteristics-in-free-fibula-flaps-used-for-jaw-reconstruction-a-prospective-cohort-study
#4
Vinay V Kumar, Ullash Kumar, Vijay Pillai, Vinotha Ponnusamy, Bilal Al-Nawas, Moni A Kuriakose
PURPOSE: The primary objective of this prospective cohort study was to evaluate primary and secondary implant stability values of implants placed into healed free fibula-reconstructed mandibles. The secondary objective was to investigate whether a correlation existed between primary implant stability and the quantity of cortical bone-implant contact and of cortical fibular bone in contact with the implants. MATERIALS AND METHODS: The study participants are patients enrolled in a registered trial (No...
March 17, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28286743/the-use-of-the-buccal-fat-pad-flap-for-oral-reconstruction
#5
REVIEW
Min-Keun Kim, Wonil Han, Seong-Gon Kim
Many congenital and acquired defects occur in the maxillofacial area. The buccal fat pad flap (BFP) is a simple and reliable flap for the treatment of many of these defects because of its rich blood supply and location, which is close to the location of various intraoral defects. In this article, we have reviewed BFP and the associated anatomical background, surgical techniques, and clinical applications. The surgical procedure is simple and has shown a high success rate in various clinical applications (approximately 90%), including the closure of oroantral fistula, correction of congenital defect, treatment of jaw bone necrosis, and reconstruction of tumor defects...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28240735/universal-expositions-physics-chemistry-and-new-occupational-diseases-the-case-of-marie-sklodowska-curie-and-radium-girls
#6
Silvana Salerno
BACKGROUND: Radium discovery by Marie and Pierre Curies caused previously unknown diseases. Marie Sklodowska Curie (1867-1934) suffered from radiations effects, as did girls in the radium dial watches factories. Therapeutic effects of radium were soon discovered, its unhealthy effects were as yet unheard of. OBJECTIVES: Analysis of Marie Sklodowska Curie (Marie) and radium girls occupational exposure, taking scientific debate on radium dangerous effects into account...
February 15, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/28187489/-dentogene-focus-as-a-rare-cause-of-necrotizing-fasciitis
#7
Christopher Kloth, Sebastian Hoefert, Till Fischborn, Christina Schraml
History and clinical findings We elaborate the case of a 72-year-old patient who presented with a painful swelling of the lower jaw in the emergency unit. Investigations and diagnosis In the clinical examination and the CT scan, a widespread cervical emphysema was found which raised suspicion for the presence of a necrotizing fasciitis of the head and neck due to aerogenic infection. Close spatial vicinity to the teeth of the left upper and lower jaw was present, so that the necrotizing fasciitis was assumed to be odontogenic...
February 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28101496/medication-related-osteonecrosis-of-the-jaw-a-preliminary-retrospective-study-of-130-patients-with-multiple-myeloma
#8
Woo-Sung Choi, Jae-Il Lee, Hyun-Joong Yoon, Chang-Ki Min, Sang-Hwa Lee
BACKGROUND: Multiple myeloma (MM) is characterized by a neoplastic proliferation of plasma cells primarily in the bone marrow. Bisphosphonates (BP) are used as supportive therapy in the management of MM. This study aimed to analyze the incidence, risk factors, and clinical outcomes of medication-related necrosis of the jaw (MRONJ) in MM patients. METHODS: One hundred thirty MM patients who had previous dental evaluations were retrospectively reviewed. Based on several findings, we applied the staging and treatment strategies on MRONJ...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28053907/prevalence-of-osteonecrosis-of-the-jaw-and-oral-characteristics-of-oncologic-patients-treated-with-bisphosphonates-at-the-general-hospital-of-mexico
#9
María Verónica Cuevas-González, Celia Minerva Díaz-Aguirre, Enrique Echevarría-Y-Pérez, Juan Carlos Cuevas-González
OBJECTIVES: To determine the prevalence and oral characteristics of cancer patients treated with bisphosphonates in the oncology and maxillofacial prosthesis departments of the General Hospital of Mexico between 2011 and 2013. MATERIALS AND METHODS: This cross-sectional study included patients who received prior treatment with bisphosphonates; an intraoral examination was performed by 2 standardized examiners. RESULTS: The prevalence of bisphosphonate-related necrosis in 75 patients was 2...
December 2016: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28005787/nasopalatine-island-advancement-flap
#10
Amin Rahpeyma, Saeedeh Khajehahmadi
BACKGROUND: Anterior maxilla is a high esthetic region of the mouth. Some flaps are introduced for bone graft coverage, mainly based on secondary epithelization of connective tissue-periosteal tissues. This article evaluates the versatility of a new mucoperiosteal flap for reproducible coverage in anterior maxilla. METHODS: In 5 mongrel dogs a 5 mm width mucosal defect in labial mucosa was created after extraction of upper jaw incisors. Nasopalatine island advancement flap was used for mucosal replacement...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27995119/fibular-flap-for-mandible-reconstruction-in-osteoradionecrosis-of-the-jaw-selection-criteria-of-fibula-flap
#11
Ji-Wan Kim, Jong-Hyun Hwang, Kang-Min Ahn
BACKGROUND: Osteoradionecrosis is the most dreadful complication after head and neck irradiation. Orocutaneous fistula makes patients difficult to eat food. Fibular free flap is the choice of the flap for mandibular reconstruction. Osteocutaneous flap can reconstruct both hard and soft tissues simultaneously. This study was to investigate the success rate and results of the free fibular flap for osteoradionecrosis of the mandible and which side of the flap should be harvested for better reconstruction...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27993571/delayed-tongue-necrosis-simultaneous-with-bilateral-osteoradionecrosis-of-the-jaw-secondary-to-head-and-neck-irradiation
#12
Marcos Martins Curi, Camila Lopes Cardoso, Anthony Froy Condezo Benites, Patrícia Martins Bueno
We present a rare case of massive tongue necrosis occurring simultaneously with bilateral osteoradionecrosis (ORN) of the jaw in a patient with a history of treatment, including surgery and postoperative radiotherapy, for a retromolar trigone carcinoma 8 years earlier. There is a distinct possibility that the extractions and administration of local anesthesia with a vasoconstrictor contributed to the onset of ORN; together, these events may have influenced the blood supply to the tongue. A glossectomy was performed after hyperbaric oxygen therapy...
February 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27931108/caustic-esophageal-injury-by-impaction-of-cell-batteries
#13
Francisco José García Fernández, Rafael León Montañés, Juan Manuel Bozada Garcia
The ingestion of cell batteries can cause serious complications (fistula, perforation or stenosis) at the esophageal level. The damage starts soon after ingestion (approximately 2 hours) and is directly related to the amount of time the battery is lodged in said location, the amount of electrical charge remaining in the battery, and the size of the battery itself. Injury is produced by the combination of electrochemical and chemical mechanisms and pressure necrosis. The ingestion of multiple cells and a size > = 20 mm are related with more severe and clinically significant outcomes...
December 2016: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/27919595/the-starting-point-for-bisphosphonate-related-osteonecrosis-of-the-jaw-alveolar-bone-or-oral-mucosa-a-randomized-controlled-experimental-study
#14
Mohammad Zandi, Arash Dehghan, Pejman Janbaz, Hamid Malekzadeh, Payam Amini
OBJECTIVE: Although over a decade has passed since first introduction of BRONJ, the exact pathophysiology of this disease is still unclear. The present experimental study aimed to determine whether the oral mucosa or alveolar bone serves as the starting point for BRONJ development. SUBJECTS AND METHODS: Sixty male Wistar rats were randomly assigned into study and control groups (each, n = 30), and received intraperitoneal injection of 0.06 mg/kg zoledronate and saline, respectively, once a week for 12 weeks...
January 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27796573/secretomes-from-mesenchymal-stem-cells-participate-in-the-regulation-of-osteoclastogenesis-in-vitro
#15
Kenichi Ogata, Wataru Katagiri, Hideharu Hibi
OBJECTIVES: The receptor activator of nuclear factor kappa-B ligand (RANKL) inhibitors are novel clinically effective agents that inhibit osteoclast differentiation, function, and survival by binding to RANKL. Medication-related osteonecrosis of the jaw (MRONJ), caused as a result of treatment using denosumab, is a newly emerging type of bone necrosis, the exact pathogenesis of which is unknown. Several studies recently showed that the intravenous administration of mesenchymal stem cells (MSCs) improved the osteonecrosis of the jaw, and it was hypothesized that paracrine effects by secretomes from MSCs are the main constituent...
October 29, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27780611/experimental-model-of-osteonecrosis-of-the-jaw-in-rats-treated-with-zoledronic-acid
#16
M E Kolpakova, A A Zubarevа, T D Artamonova, E K Lisovskaya, S G Chefu, O D Yagmurov, A I Yaremenko, T D Vlasov
We have examined the development of medication-related osteonecrosis of the jaws (MRONJ) in rats with no previous accumulation of zoledronic acid in the mandible. Ten male Wistar rats (weight 350-400g) were anaesthetised with chloral hydrate 450mg/kg intraperitoneally and the first and second mandibular molars on the left side were extracted. The five experimental rats were given six injections of zoledronic acid 0.18mg/kg over the next four weeks (total dose 1.08mg/kg). Two injections were given at once as an intravenous bolus injection (0...
February 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27771152/grade-of-sclerosis-in-the-contralateral-mandibular-area-in-osteonecrosis-of-the-jaws
#17
L Bagan, M Leopoldo-Rodado, R Poveda-Roda, J Murillo-Cortes, J M Diaz-Fernández, J Bagan
The objective of this study was to compare the grade of radiographic sclerosis between the area of osteonecrosis and the at-risk contralateral mandibular area without osteonecrosis. Three groups were studied: group 1 comprised 30 cases of medication-related osteonecrosis of the jaws (MRONJ); group 2 was the healthy contralateral area without osteonecrosis of the group 1 cases; group 3 comprised 30 healthy controls. ImageJ software was used to analyze the computed tomography images, and the grade of bone sclerosis was compared between the three groups...
February 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27741546/bisphosphonate-and-medication-related-osteonecrosis-of-the-jaw-a-review
#18
Thomas Mücke, Christian R Krestan, David A Mitchell, Jan S Kirschke, Arno Wutzl
For patients with malignant disease taking bisphosphonates and denosumab, the incidence of medication-related osteonecrosis of the jaw (MRONJ) is up to 15% in contrast to 0.01% in patients with osteoporosis. Clinical presentation of MRONJ extends from asymptomatic exposure of bone in 94% of patients to severe cases of mandibular fractures in a minority of 4.5%. The strongest risk factors for MRONJ are invasive dental procedures and dental infections. Advances in imaging provide more preoperation information compared with panoramic radiograph...
July 2016: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/27734985/prevention-of-bisphosphonate-related-mandibular-fractures
#19
M Pedrazzoli, L Autelitano, F Biglioli
Mandibular fracture is usually the clinical end of bisphosphonate-related osteonecrosis of the jaw. This is a painful complication and patients cannot feed as usual, with a worsening of their quality of life. The goal of treatment in bisphosphonate related osteonecrosis of jaw (BRONJ) patients is to slow progression of bone necrosis. We present a novel technique for treatment of severe mandibular BRONJ in stage 3 patients that present with a high risk to develop fracture, since they have a residual unaffected mandibular bone height less than 6 mm...
August 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/27713608/aliskiren-inhibits-neointimal-matrix-metalloproteinases-in-experimental-atherosclerosis
#20
Tao-Cheng Wu, Chiu-Yang Lee, Shing-Jong Lin, Jaw-Wen Chen
BACKGROUND: The renin-angiotensin system (RAS) plays an important role in atherosclerosis. Acting via the angiotensin II receptor, type 1, oxidative stress increases and contributes to endothelial dysfunction and vascular inflammation. Renin exerts effects through a renin receptor causing an increase in the efficiency of angiotensinogen cleavage and facilitates angiotensin II (Ang II) generation and action on cell surfaces. Ang II enhances proliferation and migration of vascular smooth muscle cells, indicating a direct involvement of the RAS in smooth muscle cell proliferation during neointimal formation...
September 2016: Acta Cardiologica Sinica
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