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https://www.readbyqxmd.com/read/28736923/applications-of-additive-manufacturing-in-dentistry-a-review
#1
REVIEW
Aishwarya Bhargav, Vijayavenkatraman Sanjairaj, Vinicius Rosa, Lu Wen Feng, Jerry Fuh Yh
Additive manufacturing (AM) or 3D printing has been hailed as the third industrial revolution as it has caused a paradigm shift in the way objects have been manufactured. Conventionally, converting a raw material to a fully finished and assembled, usable product comprises several steps which can be eliminated by using this process as functional products can be created directly from the raw material at a fraction of the time originally consumed. Thus, AM has found applications in several sectors including automotive, aerospace, printed electronics, and healthcare...
July 24, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28736354/novel-technique-of-percutaneous-fat-graft-for-repair-of-persistent-large-pseudomeningocele
#2
Gabrielle Santangelo, Tyler Schmidt, Mithra Gonzalez, Per-Lennart Westesson, Howard Silberstein
BACKGROUND: Pseudomeningocele is an uncommon but problematic complication in lumbar spine surgery. Initial conservative measures are frequently successful but persistence requires additional management. The current surgical approach can involve a range of techniques, including blood patches, hydrogel/fibrin sealants, drains, open surgical repair of the dura or a combination of the above if symptoms persist. This report demonstrates a novel technique for repair using a percutaneous approach to deliver an autologous fat graft into the pseudomeningocele...
July 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735717/real-time-cineangiography-visualization-of-cerebral-aneurysm-rupture-in-an-awake-patient-anatomic-physiological-and-functional-correlates
#3
Tasha L Welch, Waleed Brinjikji, Guiseppe Lanzino, William L Lanier
Intracranial aneurysms are common and, on a population-based perspective, are a major cause of morbidity and mortality as a result of mass effect or rupture. Cerebral angiography is the primary technique used for the diagnosis of cerebral aneurysms, and the imaging data have additional utility for planning medical, endovascular, or surgical treatments. An extremely rare periprocedural complication of cerebral angiography is rupture of the aneurysm, either as a chance phenomenon or as a result of some physiologic change or mechanical effect...
July 20, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28735655/an-intramedullary-nail-coated-with-antibiotic-and-growth-factor-nanoparticles-an-individualized-state-of-the-art-treatment-for-chronic-osteomyelitis-with-bone-defects
#4
Roberto Berebichez-Fridman, Pablo Montero-Olvera, Ricardo Gómez-García, Enrique Berebichez-Fastlicht
Among various infections, chronic osteomyelitis is one of the most challenging in terms of treatment. This infection is more common among patients with open fractures and those who have undergone elective orthopedic procedures. The treatment of osteomyelitis requires high antibiotic doses and an aggressive and multifaceted surgical approach. The use of parenteral antibiotics alone, without debridement, is not sufficiently effective, due to the formation of sequestra and the low vascularity of the affected area...
August 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28734767/type-ii-olecranon-fractures-in-patients-over-65-tension-band-or-pre-formed-plate-analysis-and-results
#5
A Liñán-Padilla, L Cáceres-Sánchez
OBJECTIVE: The objective of this study was to compare the clinical outcomes of surgical treatment using tension band with needles and preformed plates in type ii olecranon fractures according to the Mayo classification in patients older than 65 years. MATERIAL AND METHOD: A descriptive, retrospective study of 49 patients with a mean age of 75.1 years who underwent surgery olecranon fracture using 2 different fixing systems. The Mayo classification was used to define them, excluding type i and iii, and the VAS to assess postoperative pain...
July 19, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28730531/comparing-different-tissue-engineered-repair-materials-for-the-treatment-of-pelvic-organ-prolapse-and-urinary-incontinence-which-material-is-better
#6
Xiaojuan Wang, Yisong Chen, Zhongyong Fan, Keqin Hua
INTRODUCTION AND HYPOTHESIS: Synthetic non-absorbable meshes are widely used to augment surgical repair of pelvic organ prolapse (POP) and stress urinary incontinence (SUI), but these meshes are associated with serious complications. This study compares the attachment and extracellular matrix (ECM) production of adipose-derived stem cells (ADSCs) on different biodegradable nanomaterials to develop tissue engineered repair materials. METHODS: Rat ADSCs were isolated and cultured on electrospun poly-L-lactic acid (PLA) and electrospun poly(L-lactide)-trimethylene carbonate-gycolide (PLTG) terpolymers for 1 and 2 weeks...
July 20, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28730260/longer-survival-of-a-patient-with-glioblastoma-resected-with-5-aminolevulinic-acid-5-ala-guided-surgery-and-foreign-body-reaction-to-polyglycolic-acid-pga-suture
#7
Raluca Maria Munteanu, Lucian Eva, Bogdan IonuŢ DobrovăŢ, Alin Constantin Iordache, Liviu Pendefunda, Nicoleta Dumitrescu, Doina Mihăilă, Cristina Maria Gavrilescu, Elena Şapte, Ion Poeată
In recent years, there is a growing evidence that using 5-aminolevulinic acid (5-ALA)-guided resection of a cerebral glioblastoma, associated with chemoradiotherapy determine a prolonged survival of these patients, even though this period do not exceed 15 months. 5-ALA is a natural biochemical precursor of heme that is metabolized to fluorescent porphyrins, particularly protoporphyrin IX (PPIX) and no foreign reaction were noted until now. However, foreign body reaction developing in neurosurgery is documented in a few number of cases to suture material, surgical hemostatic material, or surgical glove starch, but up to now we could not find any article about granulomatous inflammation to polyglycolic acid (PGA) suture after brain tumor resection...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28729372/intraoperative-optical-coherence-tomography-compatible-surgical-instruments-for-real-time-image-guided-ophthalmic-surgery
#8
Justis P Ehlers, Atsuro Uchida, Sunil K Srivastava
Intraoperative optical coherence tomography (OCT) is a potentially transformational technology that is now commercially available to ophthalmic surgeons. Currently, the use of the technology is primarily limited to a 'stop and image' approach due to the lack of OCT compatibility with surgical instrumentation. In this report, we describe multiple OCT-compatible surgical instruments that were developed for various surgical needs, based on previous evaluation of potential surgical materials for optical features and physical properties...
July 20, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28728863/a-mechanistic-force-model-for-simulating-haptics-of-hand-held-bone-burring-operations
#9
Avinash Danda, Mathew A Kuttolamadom, Bruce L Tai
This paper presents a mechanistic model to predict the forces experienced during bone burring with application to haptic feedback for virtual reality surgical simulations. Bone burring is a hand-held operation where the force perceived by the surgeon depends on the cutting tool orientation and motion. The model of this study adapted the concept of specific cutting energy and material removal rate based on machining theory to calculate force distribution on the spherical tool surface in a three-dimensional setting...
July 17, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28728520/in-and-out-hospital-mortality-rate-in-surgical-patients
#10
Philippe Dony, Magali Pirson, Jean G Boogaerts
BACKGROUND: Death rates after surgery are increasingly analysed for clinical audit and quality assessment. Many studies commonly provide information only on deaths that occur during hospital stay, known as in-hospital death rates. By using hospital data set linked to death certificate registry, we recorded in- and out-hospital deaths within 30 and 60 post-operative days. METHODS: The study included all consecutive surgical procedures (denominator) under general or locoregional anaesthesia in adult patients admitted for elective or non-elective inpatient surgery...
July 20, 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28727718/quantity-of-disc-removal-and-radiological-outcomes-of-percutaneous-endoscopic-lumbar-discectomy
#11
Ji Han Heo, Chi Heon Kim, Chun Kee Chung, Yunhee Choi, Young-Geun Seo, Dong Hoi Kim, Sung Bae Park, Jung Hyeon Moon, Won Heo, Jong-Myung Jung
BACKGROUND: Herniated intervertebral disc disease (HIVD) is a common cause of lower back and leg pain. Percutaneous endoscopic lumbar discectomy (PELD) is indicated when non-surgical treatments such as medication and interventions are intractable. Ruptured discs and loose fragments inside discs are removed during PELD. Nerve root decompression is usually assessed by visualizing the free movement of the traversing nerve root or epidural fat, the free passage of a probe into the epidural space, the depression of the annulus, and the removal of the expected ruptured discs and loose fragments based on preoperative magnetic resonance images (MRI)...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727500/risk-stratification-of-adnexal-cysts-and-cystic-masses-clinical-performance-of-society-of-radiologists-in-ultrasound-guidelines
#12
Katherine E Maturen, Alexander D Blaty, Ashish P Wasnik, Krupa Patel-Lippmann, Jessica B Robbins, Lisa Barroilhet, Laura B Huffman, Elizabeth A Sadowski
Purpose To evaluate the performance of the 2010 Society of Radiologists in Ultrasound (SRU) consensus guidelines in the risk stratification of symptomatic and asymptomatic adnexal cysts. Materials and Methods An institutional review board-approved retrospective review was performed, including adnexal cysts detected with ultrasonography (US) with surgical diagnosis or at least 2 years of imaging or clinical follow-up, from January to June 2011. SRU management recommendations were scored as 0, no follow-up; 1, US follow-up; 2, magnetic resonance (MR) imaging follow-up; and 3, surgical evaluation...
July 20, 2017: Radiology
https://www.readbyqxmd.com/read/28727466/ceramic-veneers-with-gingiva-shaded-porcelain-to-replace-lost-interdental-papillae-a-case-report
#13
Stephen J Chu, Adam J Mieleszko
With implant-supported reconstructions, gingiva-shaded pink-colored restorative materials serve as an option for replacing both hard and soft tissues cosmetically. This article presents a case report describing restorative treatment for a patient who requested individual crowns and veneers after she had had multiple surgical interventions to replace a failing implant tooth No. 9. In addition to replacement of the implant prosthesis, this case involved restorative papillae reconstruction that was performed to treat interdental recession that had occurred after the surgeries...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28726666/-pathomorphological-changes-under-latent-mastoiditis
#14
Kh Chitadze, T Jorbenadze, M Adamia
In our opinion it is caused by incomplete awareness of the distribution of pathological process and the character of morphological changes in the patients. In this regard, we studied structural changes in the soft and bone tissue taken from various cavities of the middle ear system. Operating material was formed in paraffin after the fixation and proper processing. We proceed with decalcification of bone tissues in 15-20% nitric acid. We painted 5-6 mm thick peels prepared on the rotating microtome with hematoxylin and eosin...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28726148/first-human-use-of-hybrid-synthetic-biologic-mesh-in-ventral-hernia-repair-a-multicenter-trial
#15
James G Bittner, Kevin El-Hayek, Andrew T Strong, Melissa Phillips LaPinska, Jin S Yoo, Eric M Pauli, Matthew Kroh
BACKGROUND: Mesh options for reinforcement of ventral/incisional hernia (VIH) repair include synthetic or biologic materials. While each material has known advantages and disadvantages, little is understood about outcomes when these materials are used in combination. This multicenter study reports on the first human use of a novel synthetic/biologic hybrid mesh (Zenapro(®) Hybrid Hernia Repair Device) for VIH repair. METHODS: This prospective, multicenter post-market clinical trial enrolled consecutive adults who underwent elective VIH repair with hybrid mesh placed in the intraperitoneal or retromuscular/preperitoneal position...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28725918/a-comprehensive-review-of-motor-innervation-of-the-hand-variations-and-clinical-significance
#16
REVIEW
Sacha Wynter, Lakal Dissabandara
PURPOSE: The objective of the present review is to assemble the recognized anatomical variations, classifications, and clinical evidence with regard to innervation of the hand and discuss the clinical significance of these variations. METHODS: The material for this review was obtained by exploring PubMed and Google Scholar (search terms: hand innervation, variations of ulnar nerve, variations of median nerve, variations of radial nerve) as well as from standard anatomy texts...
July 19, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28725422/lesson-learnt-from-a-migrated-drain-a-case-report
#17
Veerabhadra Radhakrishna, Sharad M Tanga
INTRODUCTION: Though surgical drainage is used as a safety measure, it's not without complications. Migration of various drains has been described, but very little literature refers to the migration of peritoneal drain. PRESENTATION OF CASE: A 55-year male underwent anterior Gastro-Jejunostomy for inoperable metastatic carcinoma of the Gastric Pylorus. We found the peritoneal drain missing on the third post-operative day. On further evaluation, we found it to have migrated into the peritoneal cavity...
August 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28722003/severe-unintentional-extrusion-of-mineral-trioxide-aggregate-during-apexification
#18
Levent Demiriz, Ebru Hazar Bodrumlu
The aim of this report was to present the long-term clinical and radiographic outcomes of a case including severe unintentional extrusion of mineral trioxide aggregate (MTA). An 11-year-old boy was referred with a previously traumatized permanent central incisor which was temporarily treated by using calcium hydroxide root canal filling material. Since having an open apex and a large periapical lesion, root canal treatment with MTA apexification was planned. During the apexification process, a huge amount of MTA was unintentionally extruded into periapical tissues...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721990/neocondyle-distraction-osteogenesis-in-the-management-of-temporomandibular-joint-ankylosis-report-of-five-cases-with-review-of-literature
#19
Ravi Sharma, R Manikandhan, P Sneha, Anantanarayanan Parameswaran, J Naveen Kumar, Hermann F Sailer
INTRODUCTION AND OBJECTIVES: Management of temporomandibular joint (TMJ) ankylosis is a challenging and rather daunting task owing to complex abnormal anatomy and its sequel to craniofacial structures. Various autogenous grafts and alloplastic materials have been tried with variable success for creation of a near-normal joint. In recent years, neocondyle distraction has added a new dimension to the management of TMJ ankylosis. The aim of this paper is to describe the role of neocondyle distraction in TMJ ankylosis...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721331/role-of-laparoscopy-in-the-management-of-acute-surgical-abdomen-secondary-to-phytobezoars
#20
Abu Baker Sheikh, Aisha Akhtar, Adeel Nasrullah, Shujaul Haq, Haider Ghazanfar
A bezoar is a collection of indigestible material found in the alimentary canal, which can cause mechanical obstruction of the gastrointestinal tract. Phytobezoar is a variant composed of mostly plant material and indigestible fiber. Phytobezoar is a rare cause of small bowel obstruction (SBO) and happens more commonly in patients with risk factors predisposing to impaired gastrointestinal motility. We present a rare case of SBO secondary to phytobezoar in a 60-year-old female patient with type 2 diabetes...
June 17, 2017: Curēus
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