keyword
MENU ▼
Read by QxMD icon Read
search

Optic canal

keyword
https://www.readbyqxmd.com/read/27891476/anti-bacterial-effectiveness-of-electro-chemically-activated-eca-water-as-a-root-canal-irrigant-an-in-vitro-comparative-study
#1
S Lata, Soumya Kanta Mohanty, Prasanti Kumari Pradhan, Gaurav Patri, Sachidananda Prasad Sinha, Pratik Agrawal
INTRODUCTION: Sodium hypochlorite, is the irrigant of choice for many clinicians, but its strong toxic and damaging effects on vital periapical tissues is always a matter of concern. So, the search for a root canal irrigant with a broad antimicrobial spectrum yet with a limited toxicity on vital tissues is always desirable. AIM: The study evaluated antimicrobial efficacy of Electro-Chemically Activated (ECA) water as a root canal irrigant against E. faecalis. MATERIALS AND METHODS: Forty eight single rooted human teeth were decoronated to a length of 15mm...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27866000/effectiveness-of-final-decontamination-protocols-against-enterococcus-faecalis-and-its-influence-on-bond-strength-of-filling-material-to-root-canal-dentin
#2
Matheus Albino Souza, Daniel Dalla Lana, Ezequiel Gabrielli, Marlos Barbosa Ribeiro, Daniela Cristina Miyagaki, Doglas Cecchin
AIM: The aim of this study was to evaluate the effectiveness of final decontamination protocols against Enterococcus faecalis and their influence on bond strength of filling material to root canal dentin. MATERIAL AND METHODS: Ninety root canals were enlarged with ProTaper system and inoculated with E. faecalis for 15 days. Sixty samples were randomly divided into six groups (n=10) and subjected to following protocols: G1-distilled water(control), G2-2% chlorhexidine, G3-QMix, G4-6...
November 16, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27844224/minimally-invasive-medial-maxillectomy-and-the-position-of-nasolacrimal-duct-the-ct-study
#3
Andrzej Sieskiewicz, Krzysztof Buczko, Jacek Janica, Adam Lukasiewicz, Urszula Lebkowska, Bartosz Piszczatowski, Ewa Olszewska
Several minimally invasive modifications of endoscopic medial maxillectomy have been proposed recently, with the least traumatic techniques utilizing the lacrimal recess as a route to enter the sinus. The aim of the study was to analyze the anatomy of medial maxillary wall in the region of nasolacrimal canal and, thus, to determine the capability of performing minimally invasive approach to the maxillary sinus leading through the lacrimal recess. The course of nasolacrimal canal and the distance between the anterior maxillary wall and the nasolacrimal canal (the width of lacrimal recess) were evaluated in 125 randomly selected computed tomography (CT) head examinations...
November 14, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27829945/intraoperative-endoscopy-of-the-anterior-epitympanum-recess-through-the-posterior-tympanotomy
#4
Emilia B Karchier, Kazimierz Niemczyk, Krzysztof F Morawski, Robert Bartoszewicz, Adam Orłowski
INTRODUCTION: The anterior epitympanum recess (AER) is a common place of the development of the cholesteatoma, which is why removal of the matrix from this area plays a key role in the surgical treatment of chronic otitis media. AIM: To evaluate the intraoperative visibility of AER in endoscopic optics in comparison to microscopic optics and to determine the prevalence of cholesteatoma in various types of construction of the AER. Study design: retrospective analysis of intraoperative search...
2016: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/27792048/primary-gliosarcoma-of-the-optic-nerve-a-unique-adult-optic-pathway-glioma
#5
Patrick J Cimino, Yevgeniy V Sychev, Luis F Gonzalez-Cuyar, Raghu C Mudumbai, C Dirk Keene
A 90-year-old woman presented with 1-year history of right-sided progressive proptosis, neovascular glaucoma, blindness, and worsening ocular pain. No funduscopic examination was possible because of a corneal opacity. Head CT scan without contrast demonstrated a heterogeneous 4.1 cm (anterior-posterior) by 1.7 cm (transverse) cylindrical mass arising in the right optic nerve and extending from the retrobulbar globe to the optic canal. She underwent palliative enucleation with subtotal resection of the orbital optic nerve and tumor...
October 11, 2016: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27791520/endoscopic-endonasal-medial-to-lateral-and-transorbital-lateral-to-medial-optic-nerve-decompression-an-anatomical-study-with-surgical-implications
#6
Alberto Di Somma, Luigi Maria Cavallo, Matteo de Notaris, Domenico Solari, Thomaz E Topczewski, Manuel Bernal-Sprekelsen, Joaquim Enseñat, Alberto Prats-Galino, Paolo Cappabianca
OBJECTIVE Different surgical routes have been used over the years to achieve adequate decompression of the optic nerve in its canal including, more recently, endoscopic approaches performed either through the endonasal corridor or the transorbital one. The present study aimed to detail and quantify the amount of bone removal around the optic canal, achievable via medial-to-lateral endonasal and lateral-to-medial transorbital endoscopic trajectories. METHODS Five human cadaveric heads (10 sides) were dissected at the Laboratory of Surgical Neuroanatomy of the University of Barcelona (Spain)...
October 28, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27774925/improving-paranasal-sinus-computed-tomography-reporting-prior-to-functional-endoscopic-sinus-surgery-an-ent-uk-panel-perspective
#7
S G Mistry, D R Strachan, E L Loney
BACKGROUND: Functional endoscopic sinus surgery is recognised to have a significant complication profile (e.g. blindness, cerebrospinal fluid leak and intracranial sepsis). Pre-operative computed tomography imaging is considered mandatory for surgical planning to reduce intra-operative risk. A radiological report is the 'gold standard' in image interpretation; however, because of a lack of otolaryngological or radiological guidance, its contents may be variable. By surveying practising otolaryngologists, this study aimed to provide some guidance which may be used by radiologists to produce more surgically relevant radiological reports...
October 2016: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/27769678/serine-rich-repeat-adhesin-gordonii-surface-protein-b-is-important-for-streptococcus-gordonii-biofilm-formation
#8
A Reum Kim, Ki Bum Ahn, Hyun Young Kim, Ho Seong Seo, Cheol-Heui Yun, Seung Hyun Han
INTRODUCTION: Streptococcus gordonii is a predominant member of the oral microflora and has been isolated from root canals of teeth with refractory apical periodontitis. Biofilm formation is important for various dental diseases, and S. gordonii is involved in dental biofilm formation as an early colonizer. Although serine-rich repeat (SRR) adhesins of S. gordonii such as gordonii surface protein B (GspB) are associated with bacterial colonization, the role of GspB in biofilm formation is not clearly understood...
October 18, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27731516/transnasal-endoscopically-guided-skull-based-surgery-by-pharyngotomy-for-mass-removal-from-the-sphenopalatine-sinus-in-a-horse
#9
Rolfe M Radcliffe, Yasmine Messiaen, Nita L Irby, Thomas J Divers, Curtis W Dewey, Katharyn J Mitchell, Lauren V Schnabel, Abraham J Bezuidenhout, Peter V Scrivani, Norm G Ducharme
OBJECTIVE: To report a transnasal, endoscopically guided ventral surgical approach for accessing the cranial and caudal segments of the sphenopalatine sinus for mass removal in a horse. STUDY DESIGN: Case report. ANIMAL: Adult horse with acute onset blindness referable to a soft tissue mass within the sphenopalatine sinus. CLINICAL REPORT: A 7-year-old Warmblood gelding presented with a history of running into a fence and falling...
October 12, 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27696455/a-new-method-for-the-assessment-of-the-surface-topography-of-niti-rotary-instruments
#10
F Ferreira, I Barbosa, P Scelza, D Russano, J Neff, M Montagnana, M Zaccaro Scelza
AIM: To describe a new method for the assessment of nanoscale alterations in the surface topography of nickel-titanium endodontic instruments using a high-resolution optical method, and to verify the accuracy of the technique. METHODOLOGY: Noncontact three-dimensional optical profilometry was used to evaluate defects on a size 25, .08 taper reciprocating instrument (WaveOne(®) ), which was subjected to a cyclic fatigue test in a simulated root canal in a clear resin block...
October 1, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27688593/characteristics-and-variations-of-in-vivo-schlemm-s-canal-and-collector-channel-microstructures-in-enhanced-depth-imaging-optical-coherence-tomography
#11
Pengcheng Li, Anum Butt, Jason L Chien, Mark P Ghassibi, Rafael L Furlanetto, Camila F Netto, Yiyi Liu, Wendy Kirkland, Jeffrey M Liebmann, Robert Ritch, Sung Chul Park
BACKGROUND/AIMS: To characterise in vivo Schlemm's canal (SC) and collector channels (CC) microstructures using enhanced-depth imaging (EDI) optical coherence tomography (OCT). METHODS: Serial horizontal EDI OCT B-scans (81 scans, 15×5° rectangle) were prospectively obtained in the nasal and temporal limbus. SC cross-sectional area (CSA) was measured by delineating its lumen in each B-scan. CCs connected to SC were counted. SC CSA and the number of CCs were compared between the nasal and temporal areas...
September 28, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27679948/age-related-changes-in-bone-architecture
#12
Vincenzo Giordano, José Sérgio Franco, Hilton Augusto Koch, Pedro José Labronici, Robinson Esteves S Pires, Ney Pecegueiro DO Amaral
OBJECTIVE: : to evaluate the histologic and morphometric characteristics of bone biopsies of the anterior iliac crest of patients of different age groups. METHODS: : we studied 30 bone samples from the iliac crest, using brightfield optical microscopy. We divided the samples by donors' age groups in three groups: Group 1 (n = 10), subjects aged between 25 and 39 years; Group 2 (n = 10), subjects aged between 40 and 64 years; Group 3 (n = 10), individuals aged 65 years and over...
July 2016: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/27670622/endoscopic-transnasal-removal-of-cavernous-hemangiomas-of-the-optic-canal
#13
Yingbai Chen, Yunhai Tu, Ben Chen, Jieliang Shi, Bo Yu, Wencan Wu
PURPOSE: To assess the feasibility and efficacy of endoscopic transnasal removal of cavernous hemangiomas of the optic canal. DESIGN: Retrospective, non-comparative case series. METHODS: Eleven consecutive patients (11 eyes) with cavernous hemangioma of the optic canal underwent endoscopic trans-ethmoidal-sphenoidal removal of the tumor at the Eye Hospital of Wenzhou Medical University from January 2009 to March 2016. In each case, the indication for surgery was decreased visual acuity due to the tumor...
September 23, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27669043/standing-balance-and-compensatory-mechanisms-in-patients-with-adult-spinal-deformity
#14
Mitsuru Yagi, Shinjiro Kaneko, Yoshiyuki Yato, Takashi Asazuma
STUDY DESIGN: Prospective case series. OBJECTIVE: To compare the standing balance and posture between patients with ASD and healthy volunteers (HV). SUMMARY OF BACKGROUND DATA: The effect of adult spinal deformity (ASD) on standing posture and balance has not been fully documented. METHODS: 40 consecutive female patients with ASD (65.4 ± 6.7 years, Cobb angle 48.6 ± 20.2°, C7PL 9.1 ± 6.4 cm, and PI-LL 41...
September 23, 2016: Spine
https://www.readbyqxmd.com/read/27666708/-the-study-on-the-targets-of-the-optical-evoked-auditory-brainstem-response-on-the-cochlea-of-guinea-pig-stimulating-by-infrared-laser
#15
B B Xie, H W Li, C F Dai
Objective: To identify the targets of the infrared laser stimulating on the cochlea of guinea pig which evoked auditory brainstem response (oABR), and explore the mechanisms of the infrared neurostimulation. Methods: A polished optical fiber with 200 μm diameter (NA=0.22) was planted into the scala tympani of guinea pigs to stimulate the cochlea of both the normal hearing and acute deafened guinea pigs. The direction of the fiber distal was changed to radiate different regions of the scala tympani, recording the oABR respectively...
September 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27646793/light-transmitting-fiber-optic-posts-an-in%C3%A2-vitro-evaluation
#16
Antigoni Stylianou, John O Burgess, Perng-Ru Liu, Daniel A Givan, Nathaniel C Lawson
STATEMENT OF PROBLEM: The clinical challenge of adhering cement to intracanal dentin is transmitting light to the most apical parts of root canals to allow more efficient polymerization of the cement. PURPOSE: The purpose of this in vitro study was to compare the cement-polymerizing ability, microstructure, and radiopacity of a new fiber optic post (iLumi fiber optic Post) with a clinically successful fiber post (DT Light Post). MATERIAL AND METHODS: Polymerizing ability was compared using a modified depth-of-cure protocol...
September 16, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27619213/bodipy-conjugated-xyloside-primes-fluorescent-glycosaminoglycans-in-the-inner-ear-of-opsanus-tau
#17
Holly A Holman, Vy M Tran, Mausam Kalita, Lynn N Nguyen, Sailaja Arungundram, Balagurunathan Kuberan, Richard D Rabbitt
We report on a new xyloside conjugated to BODIPY, BX and its utility to prime fluorescent glycosaminoglycans (BX-GAGs) within the inner ear in vivo. When BX is administered directly into the endolymphatic space of the oyster toadfish (Opsanus tau) inner ear, fluorescent BX-GAGs are primed and become visible in the sensory epithelia of the semicircular canals, utricle, and saccule. Confocal and 2-photon microscopy of vestibular organs fixed 4 h following BX treatment, reveal BX-GAGs constituting glycocalyces that envelop hair cell kinocilium, nerve fibers, and capillaries...
December 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27598990/oct-study-of-mechanical-properties-associated-with-trabecular-meshwork-and-collector-channel-motion-in-human-eyes
#18
Chen Xin, Murray Johnstone, Ningli Wang, Ruikang K Wang
We report the use of a high-resolution optical coherence tomography (OCT) imaging platform to identify and quantify pressure-dependent aqueous outflow system (AOS) tissue relationships and to infer mechanical stiffness through examination of tissue properties in ex vivo human eyes. Five enucleated human eyes are included in this study, with each eye prepared with four equal-sized quadrants, each encompassing 90 degrees of the limbal circumference. In radial limbal segments perfusion pressure within Schlemm's canal (SC) is controlled by means of a perfusion cannula inserted into the canal lumen, while the other end of the cannula leads to a reservoir at a height that can control the pressure in the cannula...
2016: PloS One
https://www.readbyqxmd.com/read/27593778/endoscopic-optic-nerve-decompression-through-supraorbital-keyhole-extradural-approach-a-cadaveric-study
#19
Xiaodong Wang, Wei Wu, Hengzhu Zhang, Qing Lan
AIM: Many approaches for optic nerve decompression have their own advantages and disadvantages. The aim of this study was to perform endoscopic decompression of optic nerve through the supraorbital keyhole and evaluate its feasibility. MATERIAL AND METHODS: Ten adult cadaveric heads were studied using 4-mm, 0- and 30-degree rigid endoscopes to perform the optic nerve decompression through the supraorbital keyhole extradural approach. Furthermore, the relevant measurements about the optic canal were recorded...
November 13, 2015: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27570324/optic-neuropathy-with-delayed-onset-after-trauma-case-report-and-review-of-the-literature
#20
Kai B Kang, Scott Jones, Amjad Ahmad, Heather E Moss
We report a case of a 16 year-old healthy male, who experienced loss of vision in the right eye immediately after getting punched by a fist. His visual acuity improved to 20/20 within hours, and the optic nerve head appeared normal. CT scan of the orbits showed fractures of the right inferior orbital wall and lamina papyracea. The morning after the injury, he awoke with right eye vision decline to count fingers. There was pallid optic nerve swelling. MRI scan of the orbits showed right medial rectus enlargement and no optic canal abnormalities...
2016: Neuro-ophthalmology
keyword
keyword
108784
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"