Photoacoustic Microscopy Of Human Teeth

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FESEM evaluation of smear layer removal from conservatively

of Rome Tor Vergata , Italy. Teeth were devoid of car-ies, cracks, endodontic treatments and restorations. Only teeth with intact and mature root apices and simi-lar length (20 22 mm) were selected. Teeth were then radiographed bucco-lingually and mesio-distally. Teeth with root canal curvatures greater than 5° or calcied

The Photoacoustic Efficacy of an Er:YAG Laser with Radial and

microscopy (SEM) analysis, the debriding ability of an Er:YAG laser system equipped with a new tapered and stripped tip of 400-micron diameter and auxiliary irrigating solutions after mechanical preparation. Fifty extracted human t eh w rn do ic aly p with both hand and rotary instru - mentation and conventional chemical irrigation (5.25% sodium

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May 20, 2017 Photoacoustic & Photothermal Phenomena Bones & Teeth CAG Triplet Expansion Disorders (NEW) Cancer Human Molecular Genetics

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confocal microscopy analysis , 249 251 Human teeth anatomy apical anatomy , 28 29 Photon-induced photoacoustic streaming (PIPS) , 49, 92 93, 163 167, 219


10 teeth for rotary instrumentation control group). Only single-rooted teeth with a single canal and a single apical foramen were included. This was verified by viewing their buccal and proximal radiographs. The external surface of all teeth was cleaned with a periodontal curette. Coronal access was performed with diamond burs.

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and enamel of human teeth in vitro using infrared Photothermal Radiometry and Modulated Luminescence. ORCA Abstract # 157, Caries Research2007; 41:323. xi. Jeon RJ, Hellen A, Matvienko A, Mandelis A, Abrams SH, Amaechi BT: In vitro detection and quantification of enamel and root caries using infrared Photothermal Radiometry and Modulated

Photoacoustic imaging of teeth for dentine imaging and enamel

structures. Photoacoustic effect is used in photon induced photoacoustic streaming technique to debride the root canal. In this study, the extracted teeth were imaged using photoacoustic tomography system at 1064 nm. The degradation of enamel and dentine is an indicator of onset of dental caries. Photoacoustic microscopy (PAM) was used to study the

Atomic Emission Spectra Lab Answers

May 25, 2021 analysis, UV-VIS spectroscopy, IR and Raman spectroscopy, magnetic resonance spectroscopy, mass spectrometry, and photoacoustic spectrometry. This book will be of value to analytical chemists and related scientists and researchers. Encyclopedia of Spectroscopy and Spectrometry Atomic Astrophysics and Spectroscopy

ONLINE FIRST Calcium Hydroxylapatite Nodule Resolution After

plaque at the right nasojugal fold (Figure).She re-ported that the plaque had developed immediately after infraorbitalCaHAinjection6monthsprior.Theclinical

Principal Investigator: M.W. Berns, Ph

photoacoustic transients during pulsed laser ablation of the human temporal bone. Trans. Am. Otological Soc. (in press). 28. Wilder-Smith, P., T. Phan, L.-H. Liaw and M. W. Berns. Effects of XeCl excimer lasers and fluoride application on artificial caries-like lesions. SPIE Vol. 2128 (in press).


6856 04 Photoacoustic tomography of small-animal and human peripheral joints [6856-03] X. Wang, D. L. Chamberland, J. B. Fowlkes, P. L. Carson, D. A. Jamadar, Univ. of Michigan School of Medicine (USA) 6856 05 Monitoring of healing process of burns based on multiwavelength photoacoustic measurement [6856-04]


extracted human teeth (molars) as well as sections of the human gingival mucosa obtained after surgery. The gingiva (gums) is the portion of oral mucosa covering the alveolar bone ridge surrounding the tooth. Before cutting, the teeth were stored in physi-ological saline in a dark place at a temperature of

Comparison of Smear Layer Removal Ability of QMix with

photoacoustic streaming (PIPS), and an Er:YAG laser with an endodontic fiber tip. Methods: Sixty-four extracted single-rooted human teeth were decoronated and the canals instrumented with ProTaper (Denstply Maillefer, Ballagues, Switzerland) up to size F4. The ca-nalswereirrigatedwith5.25%sodiumhypochloriteand

Recent advances in the biomedical applications of black

human body. Phosphorus is an important component of nucleic acid and a key genetic material. Phosphorus is also an important component of adenosine triphosphate (ATP), the direct energy source of various life activities.20 Meanwhile, phospholipid is the main component of bio lms and phos-phorus can also be found in enzymes, bones and teeth.21,22 In


optoacoustic imaging, echography, intravital microscopy, as well as the basis for image analysis and 3D rendering. Most of these are translational from the human clinic as the technologies were initially developed for assessing human patients and later adapted to mouse models.

Efficacy of 4 Irrigation Protocols in Killing Bacteria

Methods: Roots of human teeth were prepared to 25/ 04, autoclaved, and inoculated with Enterococcus faecalis for 3 weeks. Canals were then disinfected by (1) standard needle irrigation, (2) sonically agitating with EndoActivator, (3) XP Endo finisher, or (4) erbiu-m:yttrium aluminum garnet laser (PIPS) (15 roots/ group).

High power diode lasers, medical lasers, and life sciences

Teeth whitening. A peroxide bleaching solution, applied to the tooth surface, is ''activated by laser energy, which speeds up of the whitening process. Lasers are also used to remove bacteria during root canal procedures. Optical Coherent Tomography (OCT) uses near-infrared light to view


Modeling Uranium Uptake in Fossilized Teeth and Bones: Insight into Potential for Long-term Uranium Waste Storage in Phosphates Dr. Troy Rasbury Geosciences Leo Takemaru Ward Melville HS (NY) Role of the Novel ESCRT-III Recruiter CCDC11 in HIV-1 Budding Dr. Carol Carter Molecular Genetics & Microbiology Giuseppina Than Earl L. Vandermeulen HS (NY)

Selective removal of composite sealants with near

excursions in the pulp chamber of extracted teeth are limited to less than 5ÉC if air-cooling is used during the rapid removal (1 to 2 min) of sealants, water-cooling is not necessary. Selective removal of compos-ite restorative materials is possible without damage to the underlying sound tooth structure.

Laser Use in Endodontic for Increase the Adhesion of Root

Induced Photoacoustic Streaming The aim of endodontic treatment is to preserve functional teeth without to prejudice the patient health. Endodontics includes diagnosis and treatment of oral pain of pulpal or periradicular origin, vital pulp therapy, and nonsurgical treatment of root canal systems, with or


PIPS : Photon Induced Photoacoustic Streaming mTAP : Modified Triple Antibiotic Paste TAP : Triple Antibiotic Paste CHS : Calcium hydroxide suspension CaOH : Calcium Hydroxide EDTA : Ethylenediamine Tetra Acetic Acid NaOCl : Sodium Hypochlorite Ni-Ti : Nickel Titanium M-phase : Martensitic Phase A-phase : Austenite Phase

Comparison of the Antibacterial Effect and Smear Layer

microscopy (SEM) examination of the canal walls forE. faecaliscolonization was performed. For comparing the smear removal efficacy, another 48 single-rooted teeth, assigned to different groups as mentioned, were irrigated after mechanical instrumentation. The presence of a smear layer at different levels of the root canal

A Comparative Evaluation of Smear Layer Removal Using Apical

Key words: EndoVac, EndoActivator, Er:YAG laser, smear layer, scanning electron microscopy. Zeiss, Oberkochen, Germany) for the absence of any caries, restorations or cracks. Calculus and other soft tis-sue debris were removed and teeth were autoclaved for 40 minutes to prevent and reduce any microbial growth during storage.

Editor s Introduction: Optical Methods for Biomedical Diagnosis

lesions in human soft tissues, and bone and teeth pathologies.13,39,41 43 The successful use of Raman spectroscopy is due to improvements in instrumen- tation in the NIR spectrum, where fluorescence is significantly reduced.

A Comparison of Er:YAG Laser with Photon-Initiated

Photoacoustic Streaming, Nd:YAG Laser, and Conventional Irrigation on the Eradication of Root Dentinal Tubule Infection by Enterococcus faecalis Biofilms: A Scanning Electron Microscopy Study BurcuOzsesOzkaya,1 KamranGulsahi,2 MeteUngor,2 andJulideSedefGocmen3 1OralandDentalHealthCenter,Hatay,Turkey

Removal Efficiency of Calcium Hydroxide Intracanal Medicament

Mar 02, 2021 tiveness of Er:YAG laserusing photoacoustic streaming in comparison with ultrasound and manual techniques in removing calcium hydroxide from root canals. MATERIALS AND METHODS Sixty-four permanent single-rooted human teeth extracted were selected and radiographed in the buccal-lingual and mesial-distal directions. Criteria for tooth selec-


rescence and on microscopy using fluorescent markers, as well as time-resolved (phase and time-gated), laser-scan, and multiphoton techniques, have been used to study human tissues and cells in situ noninvasively.9,14,34 38 Fluorescence tech-niques are applicable for medical diagnoses of various tissue pathologies, includ-

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A ne-resolution ( 600 nm) ultra-broadband ( 200 MHz) all-optical photoacoustic microscopy system was is used to image the early signs of tooth decay. Ex-vivo tooth samples exhibiting white spot lesions were scanned and were found to generate a larger (one order of magnitude) photoacoustic (PA) signal in the lesion regions compared to healthy

Comparison of the efficacy of laser-activated and ultrasonic

initiated photoacoustic streaming (PIPS). All groups were irrigated with 2.5% sodium hypochlorite and 17% EDTA solutions. Micro-CT scans were taken to evaluate the volume of root lling materials. e cleanliness of root canal walls was scored by scanning electron microscopy (SEM). Results All groups had residual root lling materials in the root


Apr 29, 2015 The photoacoustic effect, which is the principle that the technology is built on, was first discovered by Alexander Gra­ ham Bell in the 1880s. While the technology has been vastly improved, Applegate said the effect still works the same way. If you shine a pulsed light onto something that can absorb RESEARCH ON memberPG. 2 NATION

Recent Advances in Root Canal Disinfection: A Review

teeth were bacteria-free. Garcez et al. [25] also showed that usage of APDT added to root canal therapy in canals infected with Enterococcus faecalis with the optical fiber is better than when the laser light is applied directed at the access cavity. Meire et al. [26] compared the antimicrobial efficacy of 2


on extracted teeth. Nevertheless, not all contributions are in agreement. Christo et al.,8 failed to demonstrate an improvement in the use of 0.5% NaOCl in identical biofilms. This disagreement may be a consequence of differences in the power of the laser used. The use of erbium lasers to activate irrigating solutions inside the root canal have


Photoacoustic microscopy of human teeth Bin Rao 1, Xin Cai 1, Favazza, Christopher 1, Junjie Yao 1, Li Li 1, Steven Duong 2, Lih-huei Liaw 2, Jennifer Holtzman 2, Petra Wilder-Smith 2, and Lihong V. Wang 1 1 Department of Biomedical Engineering, Optical Imaging Lab, Washington University in St. Louis,

Research Behind The Canary System®

subsurface lesions in human teeth. J Biomed Opt 2004;9(4):804‐ 19. 5. Jeon RJ, Mandelis, A., Abrams, S. Depth profilometric case studies in caries diagnostics of human teeth using modulated laser radiometry and luminescence. Review of Scientific Instruments 2003;74(1):380. 6.

research highlights technology focus

microscopy or magnetic-force microscopy. The benefit of this optical approach is that it allows much faster measurements over significantly larger areas imaging from one to several thousand vortices was demonstrated. golden promise Nature Nanotech. 4, 688 694 (2009) Gold-plated carbon nanotubes (CNTs) can function as high-contrast agents for

Photoacoustic Microscopy in Dental Medicine

Keywords: biomedical imaging, photoacoustic microscopy, dentistry, human teeth, marginal adaptation DOI: 10.1515/jim-2017-0018 1. IntroductIon Photoacoustic microscopy, also known as optoacoustic imaging, is a compara-tively new method of investigation in dental medicine, which uses a laser-gen-

Deposition of Fluorescent Magnetic Nanoparticles into

initiated photoacoustic streaming. After this treatment 15 teeth was placed on neodymium magnet with tearing force 492 N for 20 minutes and 5 teeth served as controls. After 24 hours all teeth were splitted and examined by confocal laser-scanning microscope, fluorescent microscope, SEM and SEM/Energy dispersive X-ray spectrometry.

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context of IRB approved human studies. Demonstrations in the ATS included dif-fuse optical spectroscopy and imaging of tissue metabolism, blood flow imaging, and in-vivo microscopy. The tour con-tinued to the Operating Room where Dr. Kristen Kelly highlighted the success of the dynamic cooling device, an example of a technology that was