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Organizations in the News
(18 articles) Massachusetts Institute of Technology
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(10 articles) National Research Council Canada
(7 articles) Federal University of Pernambuco
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People in the News
(16 articles) Cynthia L. Darling
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Chitosan effect on dental enamel de-remineralization: An in vitro evaluation
Explore Article ScienceDirect (Jun 19 2010)
Objectives The aim of this work was to evaluate the in-vitro effect of chitosan (concentration and time of action) treatment on enamel de-remineralization behavior upon a pH cycling assay. Methods Different group of human tooth samples were exposed to de-remineralizing solutions of controlled pH using a random experimental design. Micro hardness and phosphorus chemical analysis were employed to evaluate the loss of phosphorus from the samples. Optical coherence tomography (OCT) images were obtained for selected specimens in order to evaluate the degree of penetration of chitosan into enamel. Results Vickers micro hardness results were higher for samples treated with chitosan ...
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Lantis Laser Signs Letter of Intent to Merge With Perio-Imaging Inc.
Explore Article GlobeNewswire, Inc. (Jun 16 2010)
Lantis Laser Inc. (OTCBB:LLSR) (http://www.lantislaser.com), announced today that it has signed a Letter of Intent to merge with Perio-Imaging Inc., a private New York based company. The merger would be an all stock transaction and closing, among other conditions, would be subject to raising the required funding to complete the proposed merged company's product development program. The name of the new merged company will be announced upon closing.
Comment on Article Mentions: LightLab Imaging Lawrence Livermore National Laboratory Massachusetts Institute of Technology
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Top London Dental Institute to use Michelson’s VivoSight Probe to Assess Dental Implant Viability
Explore Article Optical Coherence Tomography News (Jun 9 2010)
(Orpington, UK) June 9, 2010 -- Michelson Diagnostics Ltd has delivered a VivoSight Multi-Beam OCT scanner to Kings College London Dental Institute for a project that promises to solve one of the biggest problems of modern dentistry; how to determine when a dental implant is at risk of failure. By using VivoSight to provide real time, high resolution in vivo images of hard and soft tissue, researchers hope to quickly identify prompt, non-invasive treatment protocols versus expensive, stressful and invasive procedures.
Comment on Article Mentions: Michelson Diagnostics Michelson Diagnostics Vivosight Michelson Diagnostics EX1301
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Dentistry Goes Digital
Explore Article Wired News (Jun 2 2010)
The UCSF School of Dentistry also is a top research institution and has since 1992 ranked first among U.S. dental schools in funding from the National Institutes of Health. Optical-coherence tomography is a particularly promising field of research pioneered by Dr. Daniel Fried, shown above with research associate Hobin Kang. OCT could be thought of as optical ultrasound. It uses near-infrared light to create high-resolution images. Enamel is almost completely transparent in the near-infrared spectrum, allowing OCT to create highly detailed images of teeth as well as soft tissue. “It’s as good or better than X-rays,” Featherstone said. And it ...
Comment on Article Mentions: Daniel S. Fried UCSF
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Photodynamic therapy on bacterial reduction in dental caries: in vivo study
Explore Article SPIE Digital Library (May 17 2010)
The reduction of pathogenic microorganisms in supragingival plaque is one of the principal factors in caries prevention and control. A large number of microorganisms have been reported to be inactivated in vitro by photodynamic therapy (PDT). The purpose of this study was to develop a rat model to investigate the effects of PDT on bacterial reduction in induced dental caries. Twenty four rats were orally inoculated with Streptococcus mutans cells (ATCC 25175) for three consecutive days. The animals were fed with a cariogenic diet and water with 10% of sucrose ad libitum, during all experimental period. Caries lesion formation was ...
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Validation of swept-source optical coherence tomography (SS-OCT) for the diagnosis of occlusal caries
Explore Article ScienceDirect (May 13 2010)
Objectives Detection of pit and fissure caries by current methods is not highly sensitive. In this laboratory study, we examined the use of a swept-source optical coherence tomography (SS-OCT) as a diagnostic tool for occlusal caries. Methods One-hundred and eleven investigation sites of occlusal fissures were selected from 62 extracted teeth and examined visually using conventional dental equipment without any magnification. SS-OCT observations were carried out on the same locations as where the conventional examination had been performed. The teeth were then sectioned using a diamond saw and directly viewed under a confocal laser scanning microscope (CLSM). Presence and extent ...
Comment on Article Mentions: University of Melbourne Nobuyoshi Ozawa Yasunori Sumi
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Optical Coherence Tomography for Real-Time Imaging of Polymerization Shrinkage in Dental Composites
Explore Article Optical Coherence Tomography News (May 9 2010)
Feature Of The Week 5/9/10: Dentistry is becoming an increasingly hot topic in optical coherence tomography as the promise for a real-time, high-resolution, non-ionizing radiation in a compact and low-cost system suitable for both research and commercial installations in dental offices comes closer. For example, OCT enables cross-sectional and 3D visualization of the changes in the complex surface displacement, shrinkage direction, tissue deformation, and gap generation that occur during dental procedures such as those that take place during polymerization shrinkage in applying dental composites. The work shown here, from leading researchers at the Global Center of Excellence (GCOE), Tokyo Medical ...
Comment on Article Mentions: Yasunori Sumi Tokyo Medical and Dental University National Center for Geriatrics and Gerontology in Japan
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Characterization of Enamel in Deciduous Teeth by Optical Coherence Tomography for Assessment of Dental Caries
Explore Article Optical Coherence Tomography News (May 2 2010)
Feature Of The Week 5/2/10: Despite the differences in structure and composition of permanent and primary teeth, research about early caries detection by optical systems in clinical pediatric dentistry are still incipient worldwide. And as caries progresses more rapidly in deciduous enamel than in permanent enamel, new caries diagnostic methods need to be tested on the deciduous teeth as well. Recent work at the Universidade Federal de Pernambuco, shown here, reports on the application of the optical coherence tomography (OCT) to characterize sound dental structure and detect natural caries of human deciduous teeth. For clinical devices, it has been shown ...
Comment on Article Mentions: Anderson S. L. Gomes Federal University of Pernambuco Ana Marly A. Maia
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Optical Approaches to Oral Cancer Screening and Diagnosis: An Expert Interview With Petra Wilder-Smith, DDS, PhD
Explore Article profreg.medscape.com (Apr 29 2010)
Editor's note: At the 30th annual meeting of the American Society of Laser Medicine and Surgery (ASLMS), held April 14 to 18 in Phoenix, Arizona, Petra Wilder-Smith, DDS, PhD, presented an evaluation of current optical approaches to oral cancer screening, and those in development. Dr. Wilder-Smith, who is associate professor in the Beckman Laser Institute and the Department of Surgery in the cancer center at the University of California, Irvine, and the dental section head of the ASLMS, said that the problem is that more than two thirds of all oral cancers are detected only after they have spread from ...
Comment on Article Mentions: UC Irvine Petra Wilder-Smith
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Dr. Joe Blaes interviews Gary Severance about CADapalooza 2010
Explore Article dentistryiq.com (Apr 27 2010)
We'll also update everyone on the newest technologies in CAD/CAM dentistry, including optical coherence tomography, which is the ability to see through hard and soft tissues, as well as introduce the Sky Network, which will link all dental professionals in the future. With cosponsors Henry Schein, Ivoclar Vivadent, 3M ESPE, Imaging Sciences, and Premier Dental, you can be assured you'll save even more with special promotions available only at the show.
Comment on Article Mentions: D4D Technologies
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Apparatus for caries detection
Explore Article uspto.gov (Apr 20 2010)
An apparatus for imaging a tooth having a light source with a first spectral range and a second spectral range. A polarizing beamsplitter (18) light having a first polarization state toward the tooth and directs light from the tooth having a second polarization state along a return path toward a sensor (68), wherein the first and second polarization states are orthogonal. A first lens (22) in the return path directs image-bearing light from the tooth, through the polarizing beamsplitter (18), toward the sensor (68), and obtains image data from the redirected portion of the light having the second polarization state. ...
Comment on Article Mentions: Rongguang Liang
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Characterization of enamel in primary teeth by optical coherence tomography for assessment of dental caries
Explore Article www3.interscience.wiley.com (Apr 14 2010)
Background. Caries is a disease that affects both primary and permanent dentitions, therefore new methods of caries diagnosis need to be tested on primary teeth as well as on permanent teeth. Aim. This study reports the application of optical coherence tomography (OCT) to characterize sound dental structure and detect natural caries of human primary teeth. Design. Six primary teeth were sectioned into thin slices (∼1.5 mm), and analysed perpendicular to the enamel surface by two home-made OCT systems operating around 1280 and 840 nm. The generated images were compared with histology as the gold standard. Results. We demonstrated the efficacy ...
Comment on Article Mentions: Anderson S. L. Gomes Ana Marly A. Maia Federal University of Pernambuco
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Lasers and Optics for Measureing Tooth Decay
Explore Article opticsinfobase.org (Apr 11 2010)
Lasers may finally provide dental patients a good reason to open up and say ahhhh. Dentists are already using optical technologies and lasers to detect and treat tooth decay and lasers for therapeutic interventions, and they are looking to a future in which they can combine these methods for minimally invasive dentistry. That means that lasers may one day be used to remove decay painlessly while minimizing the loss of healthy tissue.
Comment on Article Mentions: Daniel S. Fried UCSF
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D4D Technologies has big plans to improve digital impression capabilities through the use of optical coherence tomography
Explore Article DentalProductsReport.com (Apr 7 2010)
Digital impressioning and CAD/CAM technologies offer clinicians and lab technicians numerous efficiencies in designing and fabricating dental restorations, but their impressive capabilities still have certain limits. Quite often these limits come into play when subgingival margins need to be incorporated into the design of the final restoration. D4D Technologies’ E4D™ CAD/CAM systems now use a laser and micromirrors to capture a 3D image of the true intraoral anatomy. However, as with other digital impression systems currently on the market, a clinician using an E4D system must properly prepare the tissue in order to expose subgingival margins for an optical scan. ...
Comment on Article Mentions: Lee Culp Henley Quadling D4D Technologies
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Seeing through to the margins
Explore Article E4DSky (Apr 7 2010)
Digital impressioning and CAD/CAM technologies offer clinicians and lab technicians numerous efficiencies in designing and fabricating dental restorations, but their impressive capabilities still have certain limits. Quite often these limits come into play when subgingival margins need to be incorporated into the design of the final restoration. D4D Technologies' E4D™ CAD/CAM systems now use a laser and micromirrors to capture a 3D image of the true intraoral anatomy. However, as with other digital impression systems currently on the market, a clinician using an E4D system must properly prepare the tissue in order to expose subgingival margins for an optical scan. ...
Comment on Article Mentions: Lee Culp Henley Quadling D4D Technologies
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Eric Swanson » Jim Fujimoto video: Biophotonics and optical coherence tomography
Great video Jim!
dariemihaela » Gary S. Mintz
Dear Prof. Dr. Gary S. Mintz, You are an extraordinary expert in imaging, an intelligence ...
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