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Maxillary fractures

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https://www.readbyqxmd.com/read/28730236/root-fractures-epidemiological-clinical-and-radiographic-aspects
#1
Sanda Mihaela Popescu, Oana Andreea Diaconu, Monica Scrieciu, Iulia Roxana Marinescu, Emma Cristina Drăghici, Anca Gabriela Truşcă, Alexandra Carina Bănică, Mihaela Vătu, Veronica MercuŢ
Chronic root fractures are a relative frequent dental condition, occurring both in vital teeth and in teeth with root canal treatment, with a difficult and frustrating diagnosis. Two clinical forms are described: crown-root fractures with crown origin and vertical root fractures with root origin. The aim of the study was to determine the prevalence of the root fractured extracted teeth in two dental clinics with different profile [oral rehabilitation (OR) and endodontics (E)] and to present some particular aspects of the root fractures...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28718704/a-study-of-sports-related-orbital-fractures-in-singapore
#2
Jing Zhan Lock, Raghuraj Hegde, Stephanie Young, Thiam Chye Lim, Shantha Amrith, Gangadhara Sundar
With an increased popularity of sport and active living worldwide, our study aims to explore the incidence and features of sports-related orbital fractures in Singapore. 1421 computer tomography (CT) imaging scans of the face and orbits done at the National University Hospital over a 24-month period from January 2013 and December 2014 were reviewed retrospectively for orbital fractures. We identified 483 orbital fractures of which sports injury was the fourth most common etiology (n = 65; 13.5%) after road traffic accident (n = 131; 27...
July 18, 2017: Orbit
https://www.readbyqxmd.com/read/28713755/tumor-induced-osteomalacia-a-sherlock-holmes-approach-to-diagnosis-and-management
#3
G V Chanukya, Manoj Mengade, Jagadishwar Goud, I Satish Rao, Anuj Jain
Tumor-induced osteomalacia (TIO) is a subtype of paraneoplastic syndrome associated with hypophosphatemia due to renal phosphate wasting in adults. The humoral factor responsible for clinical picture known as fibroblast growth factor 23 (FGF23) is most often secreted by benign yet elusive mesenchymal tumors, difficult to localize, access, and excise completely; rarely, they are multiple and malignant. Paradoxical inappropriately normal or low levels of 1,25-dihydroxyvitamin D in the setting of hypophosphatemia is due to suppressive effect of FGF23...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28712632/fracture-resistance-of-endodontically-treated-teeth-restored-with-2-different-fiber-reinforced-composite-and-2-conventional-composite-resin-core-buildup-materials-an-in%C3%A2-vitro-study
#4
Ashly Mary Eapen, L Vijay Amirtharaj, Kavitha Sanjeev, Sekar Mahalaxmi
INTRODUCTION: The purpose of this in vitro study was to comparatively evaluate the fracture resistance of endodontically treated teeth restored with 2 fiber-reinforced composite resins and 2 conventional composite resin core buildup materials. METHODS: Sixty noncarious unrestored human maxillary premolars were collected, endodontically treated (except group 1, negative control), and randomly divided into 5 groups (n = 10). Group 2 was the positive control. The remaining 40 prepared teeth were restored with various direct core buildup materials as follows: group 3 teeth were restored with dual-cure composite resin, group 4 with posterior composite resin, group 5 with fiber-reinforced composite resin, and group 6 with short fiber-reinforced composite resin...
July 13, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28709037/finite-element-analysis-and-clinical-complications-in-mandibular-implant-overdentures-opposing-maxillary-dentures
#5
Tameem Khuder, Norsiah Yunus, Eshamsul Sulaiman, Ali Dabbagh
Denture fracture is a common clinical complication caused by improper material selection, design, or fabrication technique. This study aimed to investigate the effect of two attachment systems on fracture risk of the implant-overdentures (IOD) via finite element analysis (FEA), using the force distributions obtained from patients' occlusal analyses and to compare the obtained results with the clinical complications associated with these attachments. A three-dimensional jaw model comprised of the edentulous bones was constructed...
July 4, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28708920/complications-and-clinical-considerations-of-the-implant-retained-zirconia-complete-arch-prosthesis-with-various-opposing-dentitions
#6
Jorge Gonzalez, Robert G Triplett
PURPOSE: To evaluate the performance of the implant-retained zirconia complete-arch prosthesis with various opposing dentitions. MATERIALS AND METHODS: The 40 patients included in this retrospective case series study were treated with one or two implant-retained zirconia complete-arch prostheses (ZIRCAP) using the Zirkonzahn protocol. Prettau zirconia frames were created with strategic cutbacks in the structure to extend zirconia incisal coverage of the esthetic anterior sextants and complete monolithic zirconia in the molar areas; subsequent layers of porcelain were applied to nonfunctional and esthetic areas...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28698833/hiding-within-the-cracks-case-report-of-rare-sutural-bone-found-at-the-nasion
#7
Bryan Edwards, Joy Mh Wang, Joe Iwanaga, Jennifer Luviano, Marios Loukas, Rod J Oskouian, R Shane Tubbs
Pathology such as skull fractures can be misdiagnosed in the presence of anatomical variations. One variant that has had little description in the literature are the sutural bones associated with the nasal bones. Herein, we describe a case of a rare sutural bone at the nasion, between the bones of the right nasal, frontal, and maxillary frontal process. To our knowledge, this is the first report of such a variant bone in this location, and such it should be considered by clinicians when evaluating patients for pathology in this region...
June 10, 2017: Curēus
https://www.readbyqxmd.com/read/28692502/reconstruction-of-zygomaticomaxillary-buttress-with-mandibular-ramus-bone-graft-in-atrophic-maxillary-fracture
#8
Gabriel Mulinari-Santos, Sormani Queiroz, João Paulo Bonardi, Valthierre Nunes Lima, Juliana Zorzi Coléte, Francisley Ávila Souza, Idelmo Rangel Garcia-Júnior, Leonardo Perez Faverani
No abstract text is available yet for this article.
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28672134/facial-fractures-in-patients-with-firearm-injuries-profile-and-outcomes
#9
Shelly Abramowicz, Veerasathpurush Allareddy, Sankeerth Rampa, Min Kyeong Lee, Romesh P Nalliah, Veerajalandhar Allareddy
PURPOSE: Firearm injuries (FAIs) are a major public health issue in the United States. The objective of this study was to examine characteristics and outcomes of patients presenting to emergency departments (EDs) with facial fractures attributed to FAIs. MATERIALS AND METHODS: The Nationwide Emergency Department Sample for the years 2008 to 2013 was used. All patients who visited EDs with FAIs and facial fractures were selected. The study focused on the following variables: 1) demographic characteristics, 2) types of facial fractures, 3) disposition status after ED visit or subsequent hospitalization, 4) charges (ED and hospitalization), and 5) patient outcomes...
June 8, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28663018/intraoral-vertico-sagittal-ramus-osteotomy-modification-of-the-l-shaped-osteotomy
#10
J Iwanaga, S Kikuta, M Nakamura, A Koba, K Ogata, S Toyofuku, R S Tubbs, J Kusukawa
The sagittal split ramus osteotomy and intraoral vertical ramus osteotomy carry the potential risk of postoperative nerve paralysis, bleeding, and fracture and dislocation of the condyle. In 1992, Choung first described the intraoral vertico-sagittal ramus osteotomy for the purpose of avoiding postoperative dislocation of the condyle. However, there is still potential for damaging the inferior alveolar nerve and maxillary artery with this technique. The authors have developed a modified technique to minimize these risks...
June 26, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28663017/the-application-of-a-delayed-expansion-technique-for-horizontal-alveolar-ridge-augmentation-in-dental-implantation
#11
X Li, P Xu, X Xu, S Liu
The aim of this study was to evaluate the application of delayed expansion of the alveolar ridge in dental implantation. This method avoids the need to harvest autogenous bone and the requirement to fix a block with screws, and could help prevent the uncontrolled fracture and avascular necrosis that may result from the traditional alveolar split. Eighteen patients and 43 implants were included in this retrospective study. The width of the alveolar ridge was measured before implantation, immediately after implantation, and after the final restoration...
June 26, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28658906/the-effect-of-cavity-design-on-fracture-resistance-and-failure-pattern-in-monolithic-zirconia-partial-coverage-restorations-an-in-vitro-study
#12
Madhavareddy Sri Harsha, Mynampati Praffulla, Mandava Ramesh Babu, Gudugunta Leneena, Tejavath Sai Krishna, G Divya
INTRODUCTION: Cavity preparations of posterior teeth have been frequently associated with decreased fracture strength of the teeth. Choosing the correct indirect restoration and the cavity design when restoring the posterior teeth i.e., premolars was difficult as it involves aesthetic, biomechanical and anatomical considerations. AIM: To evaluate the fracture resistance and failure pattern of three different cavity designs restored with monolithic zirconia. MATERIALS AND METHODS: Human maxillary premolars atraumatically extracted for orthodontic reasons were chosen...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28647160/a-clinical-decision-rule-to-predict-zygomatico-maxillary-fractures
#13
Simon Haworth, Anthony Bates, Andrea Beech, Greg Knepil
Patients presenting with periorbital trauma require clinical assessment to exclude zygomatico-maxillary fractures. A single-centre pilot investigation was undertaken at a general hospital in the United Kingdom. The sample was composed of 229 adult patients attending our emergency department with periorbital injuries. Findings from 17 signs or symptoms of facial injury were recorded on a validated tool. The relationship between clinical presentation and displaced zygomatico-maxillary fracture was assessed using diagnostic test parameters and tests for correlation...
May 25, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28642189/how-to-produce-pre-shaped-rigid-arch-bars-using-low-cost-3d-printing-technology%C3%A2-%C3%A2-a-technical-note
#14
C Druelle, S Touzet-Roumazeille, G Raoul, J Ferri, R Nicot
Numerous oral and maxillofacial procedures in dentate patients begin with the fixation of occlusions. While several techniques exist to perform mandibulo-maxillary fixation, many surgeons use arch bars in common practice. In cases of severe craniofacial traumas or jaw malformations, such as temporomandibular joint ankylosis, it may be impossible to use rigid arch bars. This technical note reports on the development of a technique to produce pre-shaped rigid arch bars using 3D printing technology. We take the case of a patient who presents Le Fort 1, Le Fort 2 and Le Fort 3 fractures as well as a central palatine disjunction, an angular mandibular fracture and bilateral zygomatic fractures...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28638348/the-redox-balance-in-erythrocytes-plasma-and-periosteum-of-patients-with-titanium-fixation-of-the-jaw
#15
Jan Borys, Mateusz Maciejczyk, Adam J Krȩtowski, Bozena Antonowicz, Wioletta Ratajczak-Wrona, Ewa Jabłońska, Piotr Załęski, Danuta Waszkiel, Jerzy R Ładny, Piotr Żukowski, Anna Zalewska
Titanium miniplates and screws are commonly used for fixation of jaw fractured or osteotomies. Despite the opinion of their biocompatibility, in clinical practice symptoms of chronic inflammation around the fixation develop in some patients, even many years after the application of miniplates and screws. The cause of these complications is still an unanswered question. Taking into account that oxidative stress is one of the toxic action of titanium, we have evaluated the antioxidant barrier as well as oxidative stress in the erythrocytes, plasma and periosteum covering the titanium fixation of the jaw...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28628350/custom-cast-ball-attachments-used-on-outdated-implants-to-restore-a-maxillary-implant-supported-overdenture
#16
Andressa Rosa Perin Leite, Danny Omar Mendoza Marin, Gabriela Giro, Ana Carolina Pero, Ligia Antunes Pereira Pinelli, JoséMauriciodos Santos Reis
The lack of compatible prosthetic components can be a complication during oral rehabilitations using outdated implants. The aim of the present clinical report was to describe an alternative technique for the fabrication of a maxillary implant-supported overdenture in a patient with 20-year-old dental implants using castable spherical patterns and ball-attachments. The patient had been wearing a relined bar/clip overdenture in the mandible on four external-hexagon dental implants and a relined complete denture in the maxilla on four internal-hexagon implants due to abutment screw fracture inside of the implants, losing the attachment system...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28608239/transnasal-endoscopic-ultrasound-guided-reduction-of-maxillary-sinus-wall-fracture
#17
Hyung Chae Yang, Young Yoon Kim, Seoung Min Jin, Hyesu You, Jung Hyun Han, Kwang Il Nam
Surgical morbidity from open reduction and internal fixation (ORIF) of maxillary sinus wall fracture often surpasses the benefits of ORIF. Hence, the authors devised transnasal endoscopic-assisted reduction of maxillary sinus wall fracture (TERM) without internal fixation as a minimally invasive surgery for maxillary sinus wall fracture. The purpose of this study was to investigate the feasibility of TERM in cadavers and patients. Six cadavers were dissected to evaluate the feasibility of TERM. In addition, 20 patients with maxillary sinus wall fractures who underwent TERM in a tertiary hospital from August of 2013 to December of 2015 were enrolled in this study...
June 12, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28582957/a-case-of-organizing-hematoma-in-a-maxillary-sinus-after-reconstruction-of-a-blow-out-fracture
#18
Sang Hee An, Hyoung Min Park, Il Gyu Kang, Joo Hyun Jung
A 36-year-old man presented because of nasal obstruction, rhinorrhea, and postnasal drip. The patient had undergone reconstruction of a blow-out fracture of the orbital floor 12 years before and had sinusitis that likely had resulted from implant migration into the maxillary sinus. The inflammation was successfully resolved, and the implant was removed through a minimally invasive endoscopic sinus surgery technique. On pathologic examination, an organizing hematoma was identified as the cause of the lesion...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28574115/a-comparative-study-of-cone-beam-computed-tomography-and-periapical-radiographs-in-decision-making-after-endodontic-instrument-fractures
#19
Senem Y Özer, Gökhan Özkan, Emrah Çetin, Hicran D Özkan
PURPOSE: This study aimed to compare the diagnostic efficacies of periapical radiographs (PRs) and cone-beam computed tomography (CBCT) scans on clinicians' decision-making in diagnosing and providing treatment of fractured instruments in root canals during glide path preparation. METHODS: 40 maxillary molar teeth were selected and randomly divided into 4 groups. In each experimental group (n = 10), Hedstroem stainless steel instruments were fractured in mesiobuccal (MB) or distobuccal (DB) root canals...
May 26, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28571830/effect-of-bulk-fill-base-material-on-fracture-strength-of-root-filled-teeth-restored-with-laminate-resin-composite-restorations
#20
N A Taha, G A Maghaireh, A S Ghannam, J E Palamara
OBJECTIVES: To evaluate the effect of using a bulk-fill flowable base material on fracture strength and fracture patterns of root-filled maxillary premolars with MOD preparations restored with laminate restorations. METHODS: Fifty extracted maxillary premolars were selected for the study. Standardized MOD cavities with endodontic treatment were prepared for all teeth, except for intact control. The teeth were divided randomly into five groups (n=10); (Group 1) sound teeth, (Group 2) unrestored teeth; (Group 3) MOD cavities with Vitrebond base and resin-based composite (Ceram...
May 29, 2017: Journal of Dentistry
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