150 results match your criteria bur hole


Effect of Endodontic Access Preparation on Fracture Load of Translucent versus Conventional Zirconia Crowns with Varying Occlusal Thicknesses.

J Prosthodont 2021 Jan 23. Epub 2021 Jan 23.

Prosthodontics Department, Louisiana State University Health Science Center, School of Dentistry, New Orleans, LA.

Purpose: To evaluate the effect of endodontic access hole preparation on fracture resistance of translucent zirconia (5Y) and conventional zirconia crowns (3Y) with varying occlusal thicknesses.

Materials And Methods: Poly(methylmethacrylate) (PMMA) dies, representing a prepared tooth, were milled. Zirconia crowns with 1 mm thick axial walls and varying occlusal thicknesses were milled from 3Y (Cercon HT) or 5Y (Cercon XT) zirconia discs and sintered. Read More

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January 2021

Bur Hole-Based Resections of Intrinsic Brain Tumors with Exoscopic Visualization.

J Neurol Surg A Cent Eur Neurosurg 2021 Mar 22;82(2):105-111. Epub 2020 Dec 22.

Department of Neurosurgery, Mayo Clinic, Jacksonville, Florida, United States.

Background:  The primary goal of brain tumor surgery is maximal safe resection while avoiding iatrogenic injury. As surgical technology increases, it is becoming more possible to resect these lesions using minimally invasive approaches. While keyhole surgeries are being advocated, the lower limit of these approaches is unclear. Read More

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A Study to Assess the Bond Strength of Acrylic Teeth With Different Retentive Features.

J Pharm Bioallied Sci 2020 Aug 28;12(Suppl 1):S510-S516. Epub 2020 Aug 28.

Department of Oral Medicine & Radiology, Mahe Institute of Dental Sciences and Hospital, Mahe, Puducherry, India.

Background And Aim: Flexible denture base has been gaining attention as a denture base material because of its toxicological safety, comfort, and enhanced aesthetics. Debonding of acrylic teeth from the flexible denture base material has posed a great problem to the clinician and patient. This study aimed at comparing the bond strength between flexible denture base with acrylic teeth having different mechanical modifications. Read More

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Neuroendoscopy-Assisted Evacuation of Chronic Subdural Hematoma with Mixed CT Density Through A Novel Small Bone Flap.

J Neurol Surg A Cent Eur Neurosurg 2020 Nov 10;81(6):549-554. Epub 2020 Sep 10.

Department of Neurosurgery, Suzhou Ninth People's Hospital, Soochow, China.

Objective:  Chronic subdural hematoma (CSDH) is a common neurosurgical condition with an increasing incidence and favorable prognosis. Surgery is the standard treatment for CSDH, and bur hole evacuation is the most widely employed technique. However, if mixed computed tomography (CT) density is found, burr hole hematoma evacuation is prone to recurrence. Read More

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November 2020

Postoperative Acute Subdural Hematoma in Patients with Chronic Subdural Hematoma due to Antithrombotic Therapy.

Turk Neurosurg 2020 Jun 25. Epub 2020 Jun 25.

Bahcelievler Nisa Hospital, Department of Neurosurgery, Istanbul, Turkey.

Aim: To evaluate the relationship between the time from termination of anticoagulant/antiplatelet medication to surgery and the risk of acute postoperative hemorrhage in CSDH patients.

Material And Methods: A retrospective study of patients who underwent bur hole craniotomy for CSDH between December 2014 and December 2019 was performed. Demographic and clinical data of age, gender, medication (antithrombotic therapy), smoking, daily alcohol consumption, history of head trauma, presenting symptoms and neurological examination were collected from medical records. Read More

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A succinct technique for the extraction of the proximal femoral nail anti-rotation (PFNA) after unlocking failure: a case report.

J Orthop Surg Res 2020 Aug 6;15(1):300. Epub 2020 Aug 6.

Department of Orthopedics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, 519000, Guangdong, China.

Introduction: Proximal femoral nail anti-rotation (PFNA) is a routine method to deal with intertrochanteric fractures in the elder population. It is challenging to remove PFNA in some cases as a result of stripping of blade heads. In this case presentation, we describe a novel technique using commonly available instruments that can be used to remove stripped, even broken anti-rotation blade where conventional methods have failed. Read More

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Simultaneous single-trajectory endoscopic biopsy and third ventriculostomy in pediatric pineal region tumors.

Acta Neurol Belg 2020 Jun 6. Epub 2020 Jun 6.

Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100050, China.

Pineal region tumors have different pathological tumors and their optimal management remains controversial. Advancements in neuroendoscopy have led to the ability to simultaneously treat the hydrocephalus and obtain a tissue diagnosis. A retrospective review of 34 patients with pineal region tumors in Beijing Tiantan hospital from the year 2016 to 2018 was undertaken. Read More

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A Case of Delayed Diagnosis of Moyamoya Disease After Recurrent Strokes.

Cureus 2019 Dec 22;11(12):e6446. Epub 2019 Dec 22.

Critical Care Medicine, Aventura Hospital and Medical Center, Aventura, USA.

We present a case of a 58-year-old man with delayed diagnosed moyamoya disease who underwent encephaloduroarteriosynangiosis (EDAS) procedure. This patient with a history of three strokes presented to our facility with new left facial droop. Neurological examination revealed left facial droop and hemiparesis. Read More

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December 2019

Intraoperative Use of Functional MRI for Surgical Decision Making after Limited or Infeasible Electrocortical Stimulation Mapping.

J Neuroimaging 2020 03 22;30(2):184-191. Epub 2019 Dec 22.

Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.

Background And Purpose: Functional magnetic resonance imaging (fMRI) is becoming widely recognized as a key component of preoperative neurosurgical planning, although intraoperative electrocortical stimulation (ECS) is considered the gold standard surgical brain mapping method. However, acquiring and interpreting ECS results can sometimes be challenging. This retrospective study assesses whether intraoperative availability of fMRI impacted surgical decision-making when ECS was problematic or unobtainable. Read More

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Interventional Ultrasound Assisted Early Local Hemostatic Drug Therapy in Traumatic Intracerebral Hemorrhage.

Ultrasound Med Biol 2020 Jan 30;46(1):180-187. Epub 2019 Sep 30.

Department of Emergency, First Medical Center, General Hospital of the PLA, Beijing, China.

This article aims to test a minimally invasive interventional approach by real-time transcranial contrast-enhanced ultrasound (CEUS) through a small bur hole to achieve an early local hemostatic drug therapy in a novel traumatic intracerebral hematoma (ICH) model of pigs with hemostatic abnormalities. The effects of hemostasis in the hemocoagulase atrox (HA) injection group and saline injection group groups were observed by transcranial CEUS at three time points: 0 s, 10 s, 2nd. We successfully established a novel traumatic ICH model of pigs with hemostatic abnormalities by the methods of interventional ultrasound techniques and observed the effect of hemostasis by using HA in a local injection method with the assistance of minimally invasive interventional ultrasound technique. Read More

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January 2020

Surgical drilling of curved holes in bone - a patent review.

Expert Rev Med Devices 2019 04 2;16(4):287-298. Epub 2019 Apr 2.

a Department of Biomedical Engineering , Delft University of Technology , Delft , The Netherlands.

Introduction: Conventional surgical drills are rigid straight instruments used to make holes in bones. They lack the ability to follow a curved pathway, making them impractical for several surgical procedures. For this reason, there is a continuous need for improved devices for surgical drilling of curved holes. Read More

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Comparison of an Er: YAG laser osteotome versus a conventional drill for the use in osteo- odonto-keratoprosthesis (OOKP).

Lasers Surg Med 2019 08 15;51(6):531-537. Epub 2019 Jan 15.

Department of Ophthalmology, University Hospital Basel, University Basel, Basel, Switzerland.

Objectives: The osteo-odonto-kerato-prosthesis (OOKP) procedure is a complex, multi-stage, multidisciplinary surgical intervention for the treatment of severe corneal blindness. One step of the OOKP consists of creating a precise hole into a tooth in which an optic cylinder is subsequently inserted; its shape must ensure a perfect watertight fit. The Er: YAG laser (L) used in this study is part of CARLO®, the first laser osteotome that enables surgical planning based on computed tomography data, robot guidance, and a precise execution of laser cuts in teeth and bone tissue, using laser photoablation rather than conventional mechanical methods. Read More

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Surgical Labyrinthectomy of the Rat to Study the Vestibular System.

J Vis Exp 2018 05 19(135). Epub 2018 May 19.

Department of Otolaryngology-Head and Neck Surgery, Seoul National University Hospital.

To study the vestibular system or the vestibular compensation process, a number of methods have been developed to cause vestibular damage, including surgical or chemical labyrinthectomy and vestibular neurectomy. Surgical labyrinthectomy is a relatively simple, reliable, and rapid method. Here, we describe the surgical technique for rat labyrinthectomy. Read More

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Palatal Wiring: Renewing an Old Technique (Circumpalatal Wiring).

J Craniofac Surg 2018 Oct;29(7):e640-e641

Dental Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

Circumpalatal wiring has 2 negative points. The first is premature loosening of the wire and the second is tongue irritation caused by exposed wire in roof of the mouth. In this article, a modified technique (palatal wiring) is introduced in which these 2 problems are targeted. Read More

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October 2018

Surgical Drains in Chronic Subdural Hematoma Surgery: From the Cheapest to the Most Expensive Drains.

World Neurosurg 2018 Apr 31;112:284-286. Epub 2018 Jan 31.

Department of Neurosurgery, Adiyaman University Research and Education Hospital, Adiyaman, Turkey.

Objective: Among the various neurosurgical techniques currently being used in chronic subdural hematoma (CSDH) surgery, bur hole craniostomy is the most popular worldwide. Recent studies have strongly recommended that a drain be placed after surgical evacuation of a hematoma, and a broad spectrum of preformed surgical drains is widely available for this purpose. If preformed drains are unavailable, a surgeon-made drain can be used and various methods are available to develop a drain in the operating room. Read More

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Repeated Short-Term Recurrence of Chronic Subdural Hematoma Associated with Metastasis to Hematoma Capsule Originating from Extracranial Malignant Tumor.

World Neurosurg 2018 Mar 27;111:201-206. Epub 2017 Dec 27.

Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan.

Background: The recurrence rate of chronic subdural hematoma (CSDH) after trepanation is relatively high and involves various factors. We encountered an extremely rare case in which metastasis of an extracranial malignant tumor to the hematoma capsule was thought to be causing short-term repeated recurrences of CSDH.

Case Description: The patient was a 74-year-old man who had undergone bur hole evacuation of left CSDH 7 months earlier and had been receiving chemotherapy for stage IV gastric cancer for the preceding 6 months. Read More

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Intracranial abscess formation following sphenoid sinus occlusion with nasoseptal flap skull base reconstruction: A cautionary tale.

Ear Nose Throat J 2017 Dec;96(12):E36-E37

Virginia Ear Nose & Throat, 161 Wadsworth Dr., Richmond, VA 23236, USA.

The formation of an intracranial abscess secondary to sphenoid sinus occlusion after nasoseptal flap skull base reconstruction has not been previously described. We report such a case that occurred at our institution in a 23-year-old man who underwent flap reconstruction for a cerebrospinal fluid leak. We determined that occlusion of the sphenoid sinus outflow might have played a role in this complication. Read More

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December 2017

Real-time ultrasound-guided external ventricular drain placement: technical note.

Neurosurg Focus 2017 Nov;43(5):E5

Department of Neurosurgery, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Greater Manchester; and.

In the United Kingdom, ultrasound-guided external ventricular drain (EVD) insertion is becoming the standard of care to mitigate the morbidity associated with catheter malposition and multiple passes. Many neurosurgeons routinely use ultrasound to check the preinsertion trajectory, although real-time visualization of ventricular cannulation is preferable since minor deviations can be significant in patients with smaller ventricles, and live visualization further enables the catheter tip to be adjusted away from the choroid plexus. Such real-time ultrasound navigation has traditionally been limited by technical factors including the challenge of simultaneously manipulating the probe and inserting the catheter within the same image plane. Read More

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November 2017

Craniotomy for Treatment of Chronic Subdural Hematoma.

Neurosurg Clin N Am 2017 Apr;28(2):229-237

Department of Neurological Surgery, Harborview Medical Center, University of Washington, 325 9th Avenue, Box 359924, Seattle, WA 98104, USA; Department of Radiology, Harborview Medical Center, University of Washington, 325 9th Avenue, 1st floor, 1 West Hospital, Seattle, WA 98104, USA.

Chronic subdural hematomas are commonly encountered pathologies in neurologic surgery. Primary management for a symptomatic lesion usually entails surgical intervention. There is controversy regarding ideal modality selection among twist drill craniostomy, bur hole craniostomy, and craniotomy. Read More

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The management and outcome for patients with chronic subdural hematoma: a prospective, multicenter, observational cohort study in the United Kingdom.

J Neurosurg 2017 Mar 17:1-8. Epub 2017 Mar 17.

Department of Neurosurgery, James Cook Hospital, Middleborough, United Kingdom.

OBJECTIVE Symptomatic chronic subdural hematoma (CSDH) will become an increasingly common presentation in neurosurgical practice as the population ages, but quality evidence is still lacking to guide the optimal management for these patients. The British Neurosurgical Trainee Research Collaborative (BNTRC) was established by neurosurgical trainees in 2012 to improve research by combining the efforts of trainees in each of the United Kingdom (UK) and Ireland's neurosurgical units (NSUs). The authors present the first study by the BNTRC that describes current management and outcomes for patients with CSDH throughout the UK and Ireland. Read More

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Treatment of chronic subdural hematomas with subdural evacuating port system placement in the intensive care unit: evolution of practice and comparison with bur hole evacuation in the operating room.

J Neurosurg 2017 Dec 20;127(6):1443-1448. Epub 2017 Jan 20.

Department of Neurosurgery, Kaiser Permanente, Redwood City.

OBJECTIVE The aims of this study were to evaluate a multiyear experience with subdural evacuating port system (SEPS) placement for chronic subdural hematoma (cSDH) in the intensive care unit at a tertiary neurosurgical center and to compare SEPS placement with bur hole evacuation in the operating room. METHODS All cases of cSDH evacuation were captured over a 7-year period at a tertiary neurosurgical center within an integrated health care delivery system. The authors compared the performance characteristics of SEPS and bur hole placement with respect to recurrence rates, change in recurrence rates over time, complications, length of stay, discharge disposition, and mortality rates. Read More

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December 2017

A comparative study of additive and subtractive manufacturing for dental restorations.

J Prosthet Dent 2017 Aug 12;118(2):187-193. Epub 2017 Jan 12.

Professor, Department of Dental Laboratory Science and Engineering, Korea University, Seoul, Republic of Korea. Electronic address:

Statement Of Problem: Digital systems have recently found widespread application in the fabrication of dental restorations. For the clinical assessment of dental restorations fabricated digitally, it is necessary to evaluate their accuracy. However, studies of the accuracy of inlay restorations fabricated with additive manufacturing are lacking. Read More

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Initial experience with endoscopic ultrasonic aspirator in purely neuroendoscopic removal of intraventricular tumors.

J Neurosurg Pediatr 2017 Mar 13;19(3):325-332. Epub 2017 Jan 13.

Department of Pediatric Neurosurgery, Santobono-Pausilipon Children's Hospital, Naples, Italy.

OBJECTIVE Neuroendoscopic removal of intraventricular tumors is difficult and time consuming because of the lack of an effective decompression system that can be used through the working channel of the endoscope. The authors report on the utilization of an endoscopic ultrasonic aspirator in the resection of intraventricular tumors. METHODS Twelve pediatric patients (10 male, 2 female), ages 1-15 years old, underwent surgery via a purely endoscopic approach using a Gaab rigid endoscope and endoscopic ultrasonic aspirator. Read More

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Predictive factors for recurrence and clinical outcomes in patients with chronic subdural hematoma.

J Neurosurg 2017 11 16;127(5):1117-1125. Epub 2016 Dec 16.

Department of Neurosurgery, Hanyang University Medical Center, Seoul; and.

OBJECTIVE Chronic subdural hematoma (CSDH) is a common type of intracranial hemorrhage in elderly patients. Many studies have suggested various factors that may be associated with the recurrence of CSDH. However, the results are inconsistent. Read More

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November 2017

A case of multiple empyema caused by Streptococcus intermedius.

Auris Nasus Larynx 2017 Dec 29;44(6):745-748. Epub 2016 Nov 29.

Department of Otorhinolaryngology, Juntendo University, 3-1-3 bunkyou-ku honngo, Tokyo 113-8431, Japan.

We report the case of a patient with multiple empyema present throughout his body, including chronic sinusitis and chronic suppurative otitis media, as well as subsequent epidural empyema, all caused by Streptococcus intermedius. A 38-year-old man presented with chief complaints of headache, left ear discharge, and nasal congestion. Imaging studies revealed pansinusitis, soft tissue signs in the mastoid cells, and otitis media. Read More

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December 2017

The management and outcome for patients with chronic subdural hematoma: a prospective, multicenter, observational cohort study in the United Kingdom.

J Neurosurg 2017 10 11;127(4):732-739. Epub 2016 Nov 11.

Department of Neurosurgery, James Cook Hospital, Middleborough, United Kingdom;

Objective: Symptomatic chronic subdural hematoma (CSDH) will become an increasingly common presentation in neurosurgical practice as the population ages, but quality evidence is still lacking to guide the optimal management for these patients. The British Neurosurgical Trainee Research Collaborative (BNTRC) was established by neurosurgical trainees in 2012 to improve research by combining the efforts of trainees in each of the United Kingdom (UK) and Ireland's neurosurgical units (NSUs). The authors present the first study by the BNTRC that describes current management and outcomes for patients with CSDH throughout the UK and Ireland. Read More

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October 2017

Abusive head trauma: an epidemiological and cost analysis.

J Neurosurg Pediatr 2016 Nov 12;18(5):542-549. Epub 2016 Jul 12.

Neuroscience Institute, Le Bonheur Children's Hospital.

OBJECTIVE Research on pediatric abusive head trauma (AHT) has largely focused on clinical presentation and management. The authors sought to review a single-institution experience from a public health perspective to gain a better understanding of the local population affected, determine overall incidence and seasonal trends, and provide details on the initial hospitalization, including extent of injuries, neurosurgical interventions, and hospital charges. METHODS All cases of AHT involving patients who presented to Le Bonheur Children's Hospital (LBCH) from 2009 through 2014 were identified. Read More

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November 2016

Effect of screw access hole preparation on fracture load of implant-supported zirconia-based crowns: an in vitro study.

J Dent Res Dent Clin Dent Prospects 2016 17;10(3):181-8. Epub 2016 Aug 17.

Associate Professor, Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.

Background. Fracture load of implant-supported restorations is an important factor in clinical success. This study evaluated the effect of two techniques for screw access hole preparation on the fracture load of cement-screw-retained implant-supported zirconia-based crowns. Read More

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September 2016

Effect of atorvastatin on resolution of chronic subdural hematoma: a prospective observational study [RETRACTED].

J Neurosurg 2016 Jul 29:1-10. Epub 2016 Jul 29.

Department of Neurosurgery, The Affiliated Brain Hospital, Nanjing Medical University, Nanjing.

OBJECTIVE Chronic subdural hematoma (CSDH) is prevalent in the aged population and is commonly treated with bur hole drainage. This treatment, however, can lead to various surgical complications. Atorvastatin may cure CSDH via its antiinflammatory and proangiogenesis effects, but not all patients treated with this medication can avoid surgery. Read More

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Safe long-term repeated disruption of the blood-brain barrier using an implantable ultrasound device: a multiparametric study in a primate model.

J Neurosurg 2017 Apr 10;126(4):1351-1361. Epub 2016 Jun 10.

Departments of 2 Neurosurgery and.

OBJECTIVE The main limitation to the efficacy of chemotherapy for brain tumors is the restricted access to the brain because of the limited permeability of the blood-brain barrier (BBB). Previous animal studies have shown that the application of pulsed ultrasound (US), in combination with the intravenous injection of microbubbles, can temporarily disrupt the BBB to deliver drugs that normally cannot reach brain tissue. Although many previous studies have been performed with external focused US transducers, the device described in the current work emits US energy using an unfocused transducer implanted in the skull thickness. Read More

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