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Mandible fracture

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https://www.readbyqxmd.com/read/28088226/use-of-an-intraoperative-navigation-system-for-retrieving-a-broken-dental-instrument-in-the-mandible-a-case-report
#1
Shintaro Sukegawa, Takahiro Kanno, Akane Shibata, Kenichi Matsumoto, Yuka Sukegawa-Takahashi, Kyosuke Sakaida, Yoshihiko Furuki
BACKGROUND: A fracture of root canal instruments, with a fractured piece protruding beyond the apex, is a troublesome incident during an endodontic treatment. Locating and retrieving them represents a challenge to maxillofacial surgeons because it is difficult to access due to the proximity between the foreign body and vital structures. Although safe and accurate for surgery, radiographs and electromagnetic devices do not provide a precise three-dimensional position. In contrast, computer-aided navigation provides a correlation between preoperatively collected data and intraoperatively encountered anatomy...
January 15, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28045834/discussion-on-analysis-of-fractured-mandible-over-two-decades
#2
Kadri Ozer
No abstract text is available yet for this article.
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28027189/a-new-method-of-fixation-with-the-yang-s-keyhole-plate-system-for-the-treatment-of-mandible-fractures
#3
In-Hee Woo, Ju-Won Kim, Jwa-Young Kim, Byoung-Eun Yang
PURPOSE: This study was designed to assess the clinical outcomes and surgical convenience of a newly designed Yang's Keyhole plate (YK plate) system for treatment of subcondyle and angle fractures of the mandible. To evaluate the system's clinical outcomes and surgical convenience, chart review and surgical simulation using a mandible replica model were performed. METHODS: The YK plate system, which is a slightly modified sliding plate, has 0.8-mm thick titanium and a widened hole in the anterior region to permit a screw head to be inserted...
December 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28024774/three-dimensional-virtual-surgery-simulation-assisted-asymmetric-bilateral-mandibular-distraction-osteogenesis-for-a-patient-with-bilateral-condylar-fractures
#4
Myung-Jin Kim, Jihee Seo, Do-Keun Kim, Seung-Hak Baek
INTRODUCTION: Our objective was to report a patient treated with 3-dimensional virtual-surgery simulation-assisted asymmetric bilateral mandibular distraction osteogenesis. METHODS: A boy (age, 9.5 years) had mandibular hypoplasia and facial asymmetry, induced by bilateral condylar fractures at 4 years of age. The asymmetric bilateral mandibular distraction osteogenesis was planned to correct facial asymmetry and mandibular hypoplasia. The 3-dimensional virtual-surgery simulation results were 11 mm of horizontal distraction on the right side and 4...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28005783/florid-cemento-osseous-dysplasia-simultaneous-the-chronic-suppurative-osteomyelitis-in-mandible
#5
Mateus Barros Cavalcante, Amanda Laísa de Oliveira Lima, Marcus Antônio Brêda Júnior, Milkle Bruno Pessoa Santos
INTRODUCTION: The florid cemento-osseous dysplasia is an uncommon condition nonneoplastic, of unknown cause with higher prevalence in melanodermic women, limited the maxillary bones, is characterized by the presence of dispersed and diffuse radiopaque calcifications, constituted of bone and dense cemento; however, when the bone is infected it induces the suppuration and formation of osseous sequestra, thus resulting in an osteomyelitis frame. CLINICAL REPORT: The patient was attended in a Dental Specialties Center in the state of Alagoas, Brazil, presenting on clinical examination edema and extra oral fistula with pus drainage in hemiface submandibular of the right side...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005765/functional-reconstruction-in-mandibular-avulsion-injuries
#6
Yoav Leiser, Dekel Shilo, Amir Wolff, Adi Rachmiel
The present report describes the planning and surgery as well as pitfalls and management of a patient with a near total mandibular avulsion injury that was rehabilitated using three-dimensional (3D) laser printing of a titanium lower jaw. Laser-sintering involves zapping layers of powdered metal to recreate a 3D implantable skeletal defect. The process involves using either mirror imaging of the unaffected side or using archival image database of healthy individuals. A 25-year-old man presented with a gunshot injury that left him with a near total avulsed mandible...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27999596/traumatic-pseudoaneurysm-of-the-internal-maxillary-artery-a-rare-life-threatening-hemorrhage-as-a-complication-of-maxillofacial-fractures
#7
E Nastro Siniscalchi, L Catalfamo, A Pitrone, R Papa, F Famà, G Lo Giudice, G Cervino, M Cicciu, F S De Ponte
Pseudoaneurysm of the internal maxillary artery due to a traumatic event is a rare condition. Pseudoaneurysms are usually directly produced by arteries break with extravasation of blood. The compressed perivascular tissue forms the wall of aneurysmal sac. Then, this sac gradually expands and can be damaged. It is rare to see pseudoaneurysms of IMA. They are usually associated with fracture of the neck of the mandible. To the best of our knowledge the pseudoaneurysm of the internal maxillary artery related to maxillofacial trauma is an event extremely rare in the literature and if not quickly managed can lead to the patient's death...
2016: Case Reports in Medicine
https://www.readbyqxmd.com/read/27994322/accuracy-in-the-diagnosis-of-vertical-root-fractures-external-root-resorptions-and-root-perforations-using-cone-beam-computed-tomography-with-different-voxel-sizes-of-acquisition
#8
Fernanda Paula Bragatto, Liogi Iwaki Filho, Amanda Vessoni Barbosa Kasuya, Mariliani Chicarelli, Alfredo Franco Queiroz, Wilton Mitsunari Takeshita, Lilian Cristina Vessoni Iwaki
AIM: The aim of this study is to assess the accuracy of images acquired with cone-beam computed tomography (CBCT) in the identification of three different root alterations. MATERIALS AND METHODS: Forty human premolars were allocated to four experimental groups (n = 10): sound teeth (control), vertical root fracture (VRF), external root resorption (ERR), and root perforation (RP). After the root alterations had been produced, four teeth were randomly assembled into 10 macerated mandibles and submitted to CBCT...
November 2016: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/27990507/four-mm-long-versus-longer-implants-in-augmented-bone-in-atrophic-posterior-jaws-4-month-post-loading-results-from-a-multicentre-randomised-controlled-trial
#9
Marco Esposito, Giovanni Zucchelli, Carlo Barausse, Roberto Pistilli, Anna Trullenque-Eriksson, Pietro Felice
PURPOSE: To evaluate whether 4-mm long dental implants could be an alternative to augmentation with equine bone blocks and the placement of at least 10-mm long implants in atrophic posterior jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles having 5 to 6 mm bone height above the mandibular canal and 40 patients with atrophic maxillae having 4 to 5 mm below the maxillary sinus, were randomised according to a parallel group design to receive one to three 4...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27989366/dental-and-temporomandibular-joint-pathology-of%C3%A2-the-american-black-bear-ursus-americanus
#10
E J Clark, S R Chesnutt, J N Winer, P H Kass, F J M Verstraete
Museum specimens (maxillae and/or mandibles) from 371 American black bears (Ursus americanus) acquired between 1889 and 2006 were examined macroscopically according to predefined criteria, and 348 were included in this study. Of the 348 specimens, 126 (36.2%) were from male animals, 106 (30.5%) were from female animals and 116 (33.3%) were from animals of unknown sex. Specimen ages ranged from young adult (n = 63, 18.1%) to adult (n = 285, 81.9%), with juveniles excluded from the study. The number of teeth available for examination was 12,019 (82...
December 15, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27977857/influence-of-cone-beam-computed-tomography-filters-on-diagnosis-of-simulated-endodontic-complications
#11
F S Verner, P S D'Addazio, C N Campos, K L Devito, S M Almeida, R B Junqueira
AIM: To evaluate the influence of cone-beam computed tomography (CBCT) filters on diagnosis of simulated endodontic complications. METHODOLOGY: Sixteen human teeth, in three mandibles, were submitted to the following simulated endodontic complications: (G1) fractured file, (G2) perforations in the canal walls, (G3) deviated cast post, and (G4) external root resorption. The mandibles were submitted to CBCT examination (I-Cat(®) Next Generation). Five oral radiologists evaluated the images independently with and without XoranCat(®) software filters...
December 15, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27939907/effect-of-interfragmentary-gap-on-the-mechanical-behavior-of-mandibular-angle-fracture-with-three-fixation-designs-a-finite-element-analysis
#12
Russell Wang, Yunfeng Liu, Joanne Helen Wang, Dale Allen Baur
BACKGROUND: The aim of this study was to simulate stress and strain distribution numerically on a normal mandible under physiological occlusal loadings. The results were compared with those of mandibles that had an angle fracture stabilized with different fixation designs under the same loadings. The amount of displacement at two interfragmentary gaps was also studied. MATERIALS AND METHODS: A three-dimensional (3D) virtual mandible was reconstructed with an angle fracture that had a fracture gap of either 0...
November 11, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27908555/dental-pathology-of-the-hoary-marmot-marmota-caligata-groundhog-marmota-monax-and-alaska-marmot-marmota-broweri
#13
J N Winer, B Arzi, D M Leale, P H Kass, F J M Verstraete
Museum specimens (maxillae and mandibles) of the three marmot species occurring in Alaska (Marmota caligata [n = 108 specimens], Marmota monax [n = 30] and Marmota broweri [n = 24]) were examined macroscopically according to predefined criteria. There were 71 specimens (43.8%) from female animals, 69 (42.6%) from male animals and 22 (13.6%) from animals of unknown sex. The ages of animals ranged from neonatal to adult, with 121 young adults (74.4%) and 41 adults (25.3%) included, and 168 excluded from study due to neonatal/juvenile age or incompleteness of specimens (missing part of the dentition)...
November 28, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27888491/twist-removal-of-healed-vs-nonhealed-implants-a-mechanical-and-histological-study-in-mini-pigs
#14
Ricardo de Oliveira Silva, Fabrício Passador, Paulo Henrique Ferreira Caria
PURPOSE: The objective of this study was to evaluate the effect of removal torque (reverse torque) of titanium implants in peri-implant bone. METHODS: The P1-M1 teeth were extracted bilaterally of 6 mini pigs (BR-1). Each animal received 6 titanium implants, three for each side of mandible. On the right side of mandible, 3 implants reminded 9 months (9M) under masticatory activity and on the left side, other 3 implants were placed and immediately removed (IR). All 36 implants were removed by removal torque, and the recorded values were statistically analyzed...
December 2016: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27884333/c-spine-injury-and-mandibular-fractures-lifesaver-broken-in-two-spots
#15
Michael W Chu, Tahereh Soleimani, Tyler A Evans, Sarah I Fernandez, Leigh Spera, Carrie Klene, Ben L Zarzaur, Sunil S Tholpady
BACKGROUND: Trauma is a leading cause of injury and mortality and may involve mandibular fractures and cervical spine injuries. Manipulation of the spine during trauma protocols and operative treatment has the potential to cause serious spinal cord injuries. The purpose of this study was to identify risk factors associated with cervical spine injury (CSI) in patients with mandibular fractures. METHODS: The National Trauma Databank (2007-2010) was used to identify patients with mandibular fractures...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27882276/isolated-non-traumatic-bilateral-coronoid-process-fracture-of-the-mandible
#16
Nabil Al-Khalisi, Krishna Kumar, Natasha Acosta
Isolated bilateral fractures of the coronoid processes of the mandible occurred in this patient without any significant trauma. The definite etiology of this case is unknown, but possible causes or contributing factors may include acute reflex contraction of the patient's temporalis muscles leading to bilateral stress fractures, coronoid process hyperplasia, or the patient's long-term use of omeprazole. The planned treatment for this patient included pain control with Mobic and tramadol and splint fabrication followed by arch bar placement with training elastics for six weeks...
October 13, 2016: Curēus
https://www.readbyqxmd.com/read/27882078/debridement-in-chronic-osteomyelitis-with-benign-osteopetrosis-a-case-report
#17
Yu-Ping Liu, Xiang-Hua Lin, Man-Yun Yan, Bao-Quan Lin, Ming-Ying Zhuo
Osteopetrosis is a rare bone disease caused by metabolic imbalances as a result of genetic mutations. For instance, autosomal dominant osteopetrosis is caused by a missense mutation of the C1CN7 gene. This was first reported in 1904 and is thought to be caused by osteoclastic dysfunction and an impaired bone resorption ability. An accumulation of cortical bone mass during the remodeling of the medullary bone may increase the bone density and give rise to a hard marble consistency. Osteopetrosis can be divided into benign and malignant forms; however, no curative treatment exists for benign osteopetrosis...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27873526/evaluation-of-complications-after-endoscopy-assisted-open-reduction-and-internal-fixation-of-unilateral-condylar-fractures-of-the-mandible-retrospective-analysis-2010-2015
#18
V Machoň, K Klíma, V Vlachopulos, J Valach, J Levorová, R Foltán
BACKGROUND: The authors present their experience with endoscopy assisted open reduction and internal fixation of condylar fractures of the mandible. Their results are presented in a retrospective study of 33 patients with unilateral subcondylar fracture, who underwent a surgical procedure between 2010 and 2015. Reduction and fixation, stability of occlusion 12 months after the operation and also presence of complications were evaluated. RESULTS: Satisfactory reduction (anatomic or physiologic) was achieved in 31 patients...
2016: Acta Chirurgiae Plasticae
https://www.readbyqxmd.com/read/27866217/osteonecrosis-of-the-jaw-onj-and-atypical-femoral-fracture-aff-in-an-osteoporotic-patient-chronically-treated-with-bisphosphonates
#19
A Sánchez, R Blanco
The aim of the study is to report the rare association of two complications of long-term treatment of osteoporosis with bisphosphonates in the same Caucasian elderly patient. A female patient of Italian descent, age 87 years, consulted in February 2013. She had a history of osteoporosis and had taken alendronate weekly for 7 years (1999-2006). Due to low back pain, an orthopedist had indicated i.v. zoledronic acid, 5 mg/year for 3 years (2006-2008). She received occasional supplements of ergocalciferol...
November 20, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27858080/-treatment-of-mandibular-angle-fracture-through-intraoral-and-extraoral-approach-a-comparative-study
#20
Bo-Jun Zhang, Wei-Hong Wang, Biao Xu
PURPOSE: To compare the clinical effects of mandibular angle fracture surgery through intraoral and extraoral approach. METHODS: From January 2008 to December 2014, 46 patients with mandibular angle fracture were retrospectively recruited in this study. An intraoral approach was used in 22 cases as group 1 in whom the fractures were fixed by one titanium miniplate alone, the others through an extraoral approach as group 2 in whom the fractures were fixed by two plates...
August 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
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