1. Federal University of Pernambuco

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    1. Mentioned In 30 Articles

    2. Feature of the Week 08/17/2017: In Vivo Assessment of Periodontal Structures and Measurement of Gingival Sulcus with Optical Coherence Tomography: A Pilot Study

      Feature of the Week 08/17/2017: In Vivo Assessment of Periodontal Structures and Measurement of Gingival Sulcus with Optical Coherence Tomography: A Pilot Study
      ... evaluation of posterior oral regions. For more information see recent Article . Courtesy Anderson Gomes from Federal University of Pernambuco . There has been increasing interest on the development of clinically accepta...
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    3. TiO2 Coated Fluoride Nanoparticles for Dental Multimodal Optical Imaging

      TiO2 Coated Fluoride Nanoparticles for Dental Multimodal Optical Imaging
      Core-shell nanostructures associated with photonics techniques have found innumerous applications in diagnostics and therapy. In this work, we introduce a novel core-shell nanostructure design that serves as a multimodal optical imaging contrast agent for dental adhesion evaluation. This nanostructure consists of a rare-earth doped (NaYF 4 :Yb 60%,Tm 0.5%)/NaYF 4 particle as the core (hexagonal prism, ~51 nm base side length), and the highly refractive TiO 2 ...
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    4. Detection of Apical Root Cracks Using Spectral Domain and Swept-source Optical Coherence Tomography

      Detection of Apical Root Cracks Using Spectral Domain and Swept-source Optical Coherence Tomography
      Introduction This study aimed to evaluate the ability of 2 optical coherence tomographic (OCT) systems to detect apical dentinal microcracks. Methods Twenty extracted human single-rooted mandibular incisors were selected. After root canal preparation with an R40 Reciproc file (VDW, Munich, Germany), the specimens presenting apical microcracks were identified using microcomputed tomographic (micro-CT) scanning as the gold standard. Then, the apical portions of the roots were imaged with spectral domain OCT ...
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    5. Optical coherence tomography of macular atrophy associated with microcephaly and presumed intrauterine Zika virus infection

      Optical coherence tomography of macular atrophy associated with microcephaly and presumed intrauterine Zika virus infection
      This case report describes the retinal optical coherence tomography (OCT) findings in a microcephalic infant with macular atrophy presumably caused by intrauterine Zika virus infection. OCT demonstrated atrophy of the outer retinal layers and choriocapillaris, including the outer nuclear layer and ellipsoid zone, associated with retinal pigment epithelium hyper-reflectivity and increased OCT penetration into deeper layers of the choroid and sclera. A major concern associated with this infection is the ...
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    6. In vivo assessment of periodontal structures and measurement of gingival sulcus with Optical Coherence Tomography: a pilot study

      In vivo assessment of periodontal structures and measurement of gingival sulcus with Optical Coherence Tomography: a pilot study
      There has been increasing interest on the development of clinically acceptable, more sensitive and specific methods for non-invasive diagnosis in Periodontics. In this pilot study, the performance of an Optical Coherence Tomography (OCT) system in imaging periodontal structures in humans was evaluated. Gingival sulcus depth measurements were obtained and compared with traditional probes. In total, 445 sites of 23 periodontally healthy individuals were measured by 3 instruments: North Carolina manual ...
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    7. Optical coherence tomography investigations of ceramic lumineers

      Optical coherence tomography investigations of ceramic lumineers
      Lumineers are veneer laminates used as an alternative for aesthetic dental solutions of the highest quality, but the only current means of its performance assessment is visual inspection. The objective of this study was to use the Optical Coherence Tomography (OCT) technique working in spectral domain to analyze in vivo in a single patient, 14 lumineers 180 days after cementation. It was possible to observe images in various kinds of ...
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    8. Monitoring the gingival regeneration after aesthetic surgery with optical coherence tomography

      Monitoring the gingival regeneration after aesthetic surgery with optical coherence tomography
      The aim of this study was to use the Optical Coherence Tomography (OCT) technique working in spectral domain (Swept Source OCT at 1325 nm, Thorlabs, New Jersey, USA) to monitor the tissue repair in patients undergoing periodontal plastic surgery. The evaluations were done over a period of 60 days. It was observed that 15 days after periodontal surgery the gum was still in different healing process as compared to the ...
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    9. Effectiveness of fluoride sealant in the prevention of carious lesions around orthodontic brackets: an OCT evaluation

      Effectiveness of fluoride sealant in the prevention of carious lesions around orthodontic brackets: an OCT evaluation
      Objective: This article aimed to evaluate in vitro the efficiency of Pro Seal fluoride sealant application in the prevention of white spot lesions around orthodontic brackets. Material and Methods: Brackets were bonded to the buccal surface of bovine incisors, and five groups were formed (n = 15) according to the exposure of teeth to oral hygiene substances and the application of enamel sealant: G1 (control), only brushing was performed with 1 ...
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    10. Marginal and internal analysis of preheated dental fissure-sealing materials using optical coherence tomography

      Marginal and internal analysis of preheated dental fissure-sealing materials using optical coherence tomography
      Objectives This study aimed to evaluate the influence of pre-photoactivation temperature on the marginal and internal integrity (occurrence of voids) of fissure-sealing materials on occlusal fissures using optical coherence tomography (OCT). Methods Occlusal fissures of 40 human third molars were sealed using a resin-based fissure sealant (Fluroshield) and a flowable composite (Permaflo) photoactivated at 68 C (preheated) or at room temperature (25 C) ( n = 10). After sealing, the teeth were ...
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    11. Evaluation of dental enamel caries assessment using Quantitative Light Induced Fluorescence and Optical Coherence Tomography

      Evaluation of dental enamel caries assessment using Quantitative Light Induced Fluorescence and Optical Coherence Tomography
      An in vitro study of morphological alterations between sound dental structure and artificially induced white spot lesions in human teeth, was performed through the loss of fluorescence by Quantitative Light-Induced Fluorescence (QLF) and the alterations of the light attenuation coefficient by Optical Coherence Tomography (OCT). To analyze the OCT images using a commercially available system, a special algorithm was applied, whereas the QLF images were analyzed using the software available ...
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    12. Enamel Quality after Debonding: Evaluation by Optical Coherence Tomography

      Enamel Quality after Debonding: Evaluation by Optical Coherence Tomography
      The aims of this study were to evaluate quantitatively the enamel fractures, adhesive remnants and bracket fragments on enamel after debonding of metal and ceramic brackets, and to quantify the layer of adhesive remnants in depth after two different cleanup procedures. Metal and ceramic brackets were bonded on 120 human incisors and then debonded using two different techniques with Side Cutter (SC) and Anterior Bracket Removal plier (ABR). After this ...
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    13. Study of lumineers' interfaces by means of optical coherence tomography

      Study of lumineers' interfaces by means of optical coherence tomography
      OCT has been used to evaluate dental materials, and is employed here to evaluate lumineers for the first time. Lumineers are used as esthetical indirect restoration, and after wearing and aging, several undesirable features such as gaps, bubbles and mismatch can appear in which would only be seen by invasive analysis. The OCT (spectral domain SD-OCT, 930nm central wavelength) was used to evaluate noninvasively the lumineer- cement-tooth interface. We analyzed ...
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    14. Non-Invasive Periodontal Probing Through Fourier Domain Optical Coherence Tomography

      Non-Invasive Periodontal Probing Through Fourier Domain Optical Coherence Tomography
      Background: Periodontitis is a multifatorial and infectious disease that may result in significant debilitation. The aim of this study was to exploit two optical coherence tomography (OCT) systems operating in the Fourier Domain and different wavelengths, 930 nm and 1325 nm, for structural analysis of periodontal tissue in porcine jaws. Methods: Five fresh porcine jaws were sectioned and stored in formalin before OCT analysis. 2D and 3D OCT images of ...
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    15. Micro-structural information of porous materials by optical coherence tomography

      Micro-structural information of porous materials by optical coherence tomography
      In this study we describe the use of Optical Coherence Tomography (OCT) to reveal microstructures and damages in porous media. An approach for establishing pore size and pore size distribution based upon OCT was developed. This approach was tested with oil source rock samples. Several sedimentary rock samples from Brazilian oil fields with porosity values ranging between 15% and 28% were evaluated, and the results agreed quite well with the ...
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  2. About Federal University of Pernambuco

    Federal University of Pernambuco

    Federal University of Pernambuco (Universidade Federal de Pernambuco, UFPE) is a public university located in Recife, Brazil, and established in 1946. UFPE has 70 undergraduate courses and 175 postgraduate courses. As of 2007, UFPE had near 35,000 students and about 2,000 professors. The university has three campuses: Recife, Vitória de Santo Antão and Caruaru. Its main campus, or "Cidade Universitária", is located in the west part of town, next to the Várzea neighborhood. The Law School or Faculty of Law is located in the downtown. UFPE is the ninth Brazilian university in size and scientific production, and the seventh among the federal institutes. Over 25,000 students are signed