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Mandible fractures

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https://www.readbyqxmd.com/read/28210407/a-single-center-review-of-radiologically-diagnosed-maxillofacial-fractures-etiology-and-distribution
#1
Jordan N Halsey, Ian C Hoppe, Mark S Granick, Edward S Lee
The etiology of fractures of the maxillofacial skeleton varies among studies, with motor vehicle accidents and assaults oftentimes the most common. The number of males outnumbers females throughout most studies. Fractures of the zygoma, orbit, and mandible are usually cited as most common fracture types. This study examines a single center's experience with regards to etiology and distribution of fractures. A retrospective review of all radiologically confirmed facial fractures in a level 1 trauma center in an urban environment was performed for the years 2000 to 2012...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28195897/base-of-skull-blocks-for-open-reduction-and-internal-fixation-of-faciomaxillary-fractures
#2
Sandeep Mehrotra, Sunil Anand
INTRODUCTION: Faciomaxillary fractures (FMF) occur in a significant proportion of trauma patients. Nearly all polytrauma patients and even those with isolated FMF are managed under general anesthesia for definitive management. We propose the use of regional nerve blocks as a safe and effective means for open reduction and fixation of isolated FMF. AIM AND OBJECTIVES: The aim is to evaluate the feasibility, effectiveness and safety of base of skull maxillomandibular and distal trigeminal nerve blocks in the management of FMF...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28181688/dental-implants-and-bone-augmentation-in-hiv-infected-patients-under-haart-case-report-and-review-of-the-literature
#3
Fábio Vidal, Rafael Vidal, Jeter Bochnia, Rodrigo Carvalho de Souza, Lucio Souza Gonçalves
The present study reviewed the literature regarding dental implants in HIV-infected patients and reports the long-term follow-up of three clinical cases of patients under HAART that received bone augmentation and dental implants. The first case presents a young patient with a large defect in the mandible, as a consequence of a longitudinal fracture, that was treated with guided bone regeneration (GBR) previously to implant placement. The second case reported is middle-aged man with a fractured upper lateral incisor treated with immediate placement and simultaneous GBR to repair the dehiscence due to the buccal bone resorption...
February 9, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/28168238/numb-chin-syndrome-associated-with-vertical-root-fracture-and-odontogenic-infection
#4
John K Brooks, Kevin G Schwartz, Alvin S Ro, Chang-Ching D Lin
Numb chin syndrome (NCS) is a multifactorial neuropathic disorder associated with paresthesia to the chin, lip, and oral mucosa, particularly arising as a sequela to various dental-related procedures or infections in the mandible. Timely elucidation of the underlying etiology is of paramount importance as the presentation of NCS could serve as a harbinger of malignancy or metastatic disease. This report describes an unusual case of NCS developing synchronously with a vertical root fracture and odontogenic infection in a mandibular first molar...
February 6, 2017: Quintessence International
https://www.readbyqxmd.com/read/28157815/resistance-of-mandibular-polyurethane-replicas-to-fracture-after-removal-of-blocks-from-the-symphysis-and-ramus
#5
Mohanad Al-Sabbagh, Georgios Romanos, Scott R Price, David A Puleo, Fonda G Robinson, Mark V Thomas
BACKGROUND: When block grafts are harvested intraorally, the donor sites may act as stress concentrators and alter the structural integrity of the mandible. PURPOSE: The study aimed to compare displacement and load failure between intact polyurethane mandibular replicas and similar replicas from which blocks were taken at the symphysis or the ramus. It also aimed to identify trends of load failure. MATERIALS AND METHODS: Thirty-five mandibular replicas were tested to failure with an electromagnetic material testing unit...
February 2, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28144599/mandibular-fractures-and-associated-factors-at-a-tertiary-care-hospital
#6
Srikanth Gadicherla, Prem Sasikumar, Satpal Singh Gill, Manish Bhagania, Abhay Taranath Kamath, Kalyana Chakravarthy Pentapati
OBJECTIVES: The aim of this study was to evaluate the distribution, etiology and type of mandibular fractures in subjects referred to our institution. METHODS: A retrospective study of 689 subjects, during the period from May 2010 to September 2013 with mandibular fractures was conducted. Information on age, gender, mechanism of injury and sites of trauma was obtained from the trauma registry. Data were tabulated and analyzed statistically. RESULTS: A total of 653 subjects had mandibular fractures, out of which 574 were males...
December 2016: Archives of Trauma Research
https://www.readbyqxmd.com/read/28137635/in-silico-analysis-of-the-biomechanical-stability-of-commercially-pure-ti-and-ti-15mo-plates-for-the-treatment-of-mandibular-angle-fracture
#7
Satoshi Yamaguchi, Rodolfo B Anchieta, Fernando P S Guastaldi, Nick Tovar, Daisuke Tawara, Satoshi Imazato, Paulo G Coelho
PURPOSE: To investigate the influence of different materials and fixation methods on maximum principal stress (MPS) and displacement in reconstruction plates using in silico 3-dimensional finite element analysis (3D-FEA). MATERIALS AND METHODS: Computer-assisted designed (CAD) models of the mandible and teeth were constructed. Champy and AO/ASIF plates and fixation screws were designed with CAD software. 3D-FEA was performed by image-based CAE software. Maximum and minimum values of biomechanical stability, MPS, and displacement distribution were compared in Champy and AO/ASIF plates made from commercially pure titanium grade 2 (cp-Ti) and a titanium-and-molybdenum (14...
January 4, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28110839/complications-associated-with-the-treatment-of-fractures-of-the-dentate-portion-of-the-mandible-in-paediatric-patients-a-systematic-review
#8
REVIEW
A N Bobrowski, M A Torriani, C L Sonego, P H deA Carvalho, L K Post, O L Chagas Júnior
This study aimed to answer the following question: What is the best treatment option for fractures of the dentate portion of the mandible in paediatric patients when considering the occurrence of postoperative complications? A systematic literature review was done using the PubMed, Scopus, and Cochrane Library databases, and 1186 articles on the topic were found. Twelve of these articles were included in the final review after the full texts had been read. A sample of 178 paediatric patients was obtained. In the six cases in which treatment was surgery with titanium plate fixation, there were no postoperative complications, whereas in the 141 cases in which treatment was surgery with biodegradable plates, there were 12 postoperative complications, and in the 31 cases in which treatment was non-surgical, there were three postoperative complications...
January 16, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28106692/use-of-resorbable-fixation-system-in-pediatric-facial-fractures
#9
Frankie K Wong, Saleigh Adams, Donald A Hudson, Wayne Ozaki
INTRODUCTION: Resorbable fixation system (RFS) is an alternative to titanium in open reduction and internal fixation of pediatric facial fractures. METHODS: This study retrospectively reviewed all medical records in a major metropolitan pediatric hospital in Cape Town, South Africa from September 2010 through May 2014. Inclusion criteria were children under the age of 13 with facial fractures who have undergone open reduction and internal fixation using RFS. Intraoperative and postoperative complications were reviewed...
January 18, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28088226/use-of-an-intraoperative-navigation-system-for-retrieving-a-broken-dental-instrument-in-the-mandible-a-case-report
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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