1. Articles from Carmen Todea

    1-12 of 12
    1. Optical Coherence Tomography for Non-Invasive ex vivo Investigations in Dental Medicine — a Joint Group Experience (Review)

      Optical Coherence Tomography for Non-Invasive ex vivo Investigations in Dental Medicine — a Joint Group Experience (Review)

      This review emphasizes the current knowledge related to optical coherence tomography (OCT) as a non-invasive diagnostic tool to perform ex vivo and showing great potential for in vivo structural imaging of features in the oral cavity. OCT technology can generate high-resolution cross-sectional and en-face images of the internal architecture of the investigated sample (2–3 mm in depth). To this goal, en-face time domain OCT (TD-OCT) and spectral domain OCT (SD-OCT) were employed. Topics included in this review refer to OCT non-destructive evaluations of: dental abfraction and attrition, material defects and micro-leakages at the tooth-filling interface, temporal-mandibular joint disc, quality ...

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    2. Imaging of oral pathological tissue using optical coherence tomography

      Imaging of oral pathological tissue using optical coherence tomography

      Oral squamous cell carcinoma (OSCC) constitutes 90% of oral cancer. Early detection is a cornerstone to improve survival. Interaction of light with tissues may highlight changes in tissue structure and metabolism. We propose optical coherence tomography (OCT), as a non-invasive diagnosis method, being a new high-resolution optical technique that permits tri-dimensional (3-D), real-time imaging of near surface abnormalities in complex tissues. In this study half of the excisional biopsy was directed to the pathologist and the other half was assigned for OCT investigation. Histopathology validated the results. Areas of OSCC of the buccal mucosa were identified in the OCT images ...

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    3. Optical Imaging of Oral Squamous Cell Carcinoma Using Optical Coherence Tomography and Micro CT

      Optical Imaging of Oral Squamous Cell Carcinoma Using Optical Coherence Tomography and Micro CT

      Oral squamous cell carcinoma (OSCC) constitutes 90% of oral cancer. Early detection is a cornerstone to improve survival and to reduce diagnostic delay. We propose optical coherence tomography (OCT), as a non-invasive diagnosis method. OCT represents a new high-resolution optical technique that permits 3D, real-time imaging of near surface abnormalities in complex tissues. In the present study half of the excisional biopsy was directed to the pathologist and the other half was assigned for OCT and Micro-CT investigation. For the OCT imaging it was used an OCT prototype (1300 nm), Synchrotron Radiation Micro-CT and histopathology validated the results. Areas of ...

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    4. Optical imaging of oral pathological tissue using optical coherence tomography and synchrotron radiation computed microtomography

      Optical imaging of oral pathological tissue using optical coherence tomography and synchrotron radiation computed microtomography

      The efforts aimed at early diagnosis of oral cancer should be prioritized towards developing a new screening instrument, based on optical coherence tomography (OCT), to be used directly intraorally, able to perform a fast, real time, 3D and non-invasive diagnosis of oral malignancies. The first step in this direction would be to optimize the OCT image interpretation of oral tissues. Therefore we propose plastination as a tissue preparation method that better preserves three-dimensional structure for study by new optical imaging techniques. The OCT and the synchrotron radiation computed microtomography (micro-CT) were employed for tissue sample analyze. For validating the OCT ...

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    5. En face optical coherence tomography investigation of apical microleakage after laser-assisted endodontic treatment

      The aim of our study was to evaluate the potential of en face optical coherence tomography (OCT) for the detection of apical microleakage after 980 nm and 1,064 nm laser-assisted endodontic treatment. Ninety, human, single-rooted teeth with one straight root canal and closed apices were used. All roots were prepared biomechanically to the working length at an apical size 30 and 0.06 taper. The teeth were divided into three equal groups of 30 samples each, according to the treatment to be applied to the root canal. Group I received 980 nm diode laser (3 W, 0.01 s ...
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    6. Quality assessment of dental treatments using en-face optical coherence tomography

      Quality assessment of dental treatments using en-face optical coherence tomography

      The present study evaluates the potential of en-face optical coherence tomography (OCT) as a possible noninvasive high resolution method for supplying necessary information on the material defects of dental prostheses and microleakage at prosthetic interfaces. Teeth are also imaged after several treatment methods to asses material defects and microleakage at the tooth-filling interface, and the presence or absence of apical microleakage, as well as to evaluate the quality of bracket bonding on dental hard tissue. C-scan and B-scan OCT images as well as confocal images are acquired from a large range of samples. Gaps between the dental interfaces and material ...

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    7. Root canal filling evaluation using optical coherence tomography

      Meda L. Negrutiu, Cosmin Sinescu, Michael Hughes et al. The root canal fillings are destined to seal the root canal especially in the apical areea. Invasive techniques are known which are used to assess the quality of the seal. These lead to the destruction of the probes and often no conclusion could be drawn in respect to the existence of any microleaka ... [Proc. SPIE Int. Soc. Opt. Eng. 6991, 69911T (2008)] published Fri May 2, 2008.
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    8. Investigation of bracket bonding for orthodontic treatments using en-face optical coherence tomography

      Cosmin Sinescu, Meda L. Negrutiu, Michael Hughes et al. Despite good diagnosis and treatment planning, orthodontic treatment can fail if bonding fails. It is now common practice to address the aesthetic appearance of patients using aesthetic brackets instead of metal ones. Therefore, bonding aesthetic brackets has become an issue for orthodontists today. ... [Proc. SPIE Int. Soc. Opt. Eng. 6991, 69911M (2008)] published Fri May 2, 2008.
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    9. Implant bone interface investigated with a non-invasive method: optical coherence tomography

      Cosmin Sinescu, Michael Hughes, Adrian Bradu et al. Bone implants insertion implies the necessity of a important primary stability. The quality of the implant insertion could be investigated by implant bone interface analysis. In this study, we demonstrate that en-face optical coherence tomography can be used to evaluate these interfaces. We have col ... [Proc. SPIE Int. Soc. Opt. Eng. 6991, 69911L (2008)] published Fri May 2, 2008.
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    10. An optical coherence tomography investigation of materials defects in ceramic fixed partial dental prostheses

      Cosmin Sinescu, Meda Negrutiu, Michael Hughes et al. Metal ceramic and integral ceramic fixed partial prostheses are mainly used in the frontal part of the dental arch because for esthetics reasons. The masticatory stress may induce fractures of the bridges. There are several factors that are associated with the stress state created in ceramic restora ... [Proc. SPIE Int. Soc. Opt. Eng. 6991, 69910O (2008)] published Fri May 2, 2008.
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    11. Fixed partial dentures investigated by optical coherent tomography

      Cosmin Sinescu, Meda Negrutiu, Carmen Todea et al. Fixed partial prostheses as integral ceramics, integral polymers, metal ceramics or metal polymers bridges, are mainly used in the frontal part of the dental arch (especially the integral bridges). They have to satisfy high stress requirements as well as esthetic. The masticatory stress may induce f ... [Proc. SPIE Int. Soc. Opt. Eng. 6847, 684707 (2008)] published Mon Feb 18, 2008.
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    12. Complete denture analyzed by optical coherence tomography

      Meda L. Negrutiu, Cosmin Sinescu, Carmen Todea et al. The complete dentures are currently made using different technologies. In order to avoid deficiencies of the prostheses made using the classical technique, several alternative systems and procedures were imagined, directly related to the material used and also to the manufacturing technology. Thus, ... [Proc. SPIE Int. Soc. Opt. Eng. 6843, 68430R (2008)] published Mon Feb 11, 2008.
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    1-12 of 12
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  2. Topics in the News

    1. (11 articles) University of Kent
    2. (11 articles) Cosmin Sinescu
    3. (10 articles) Victor Babes University of Medicine and Pharmacy
    4. (10 articles) Adrian G. Podoleanu
    5. (7 articles) Adrian Bradu
    6. (4 articles) Virgil-Florin Duma
    7. (3 articles) Adrian Manescu
    8. (3 articles) Meda-Lavinia Negrutiu
    9. (1 articles) UC Davis
    10. (1 articles) Robert J. Zawadzki
    11. (1 articles) Mehdi Azimipour
    12. (1 articles) John S. Werner
    13. (1 articles) Ravi S. Jonnal
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