1. Federal University of Pernambuco

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    1. Mentioned In 40 Articles

    2. Fracture resistance of extensive bulk-fill composite restorations after selective caries removal

      Fracture resistance of extensive bulk-fill composite restorations after selective caries removal
      This study evaluated the effect of selective carious tissue removal on the fracture strength and failure mode of composite restorations in molars presenting only the buccal cusps. Deep cavities were prepared on the occlusal surface, and the lingual cusps were removed. Carious lesions in the middle of the pulpal wall were artificially induced with acetic acid (pH = 4.5) for 35 days. The demineralized dentin was left intact or was ...
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    3. Optical coherence tomography in the evaluation of retinitis pigmentosa

      Optical coherence tomography in the evaluation of retinitis pigmentosa
      Background Optical coherence tomography (OCT) is a non-invasive imaging test that provides easily obtainable and highly reproducible cross-sectional images of the retina. Improved modalities of the OCT that are capable of providing high quality images of not only the retina, but also the deeper structures and vasculature have been developed, including swept-source OCTs and OCT angiography. Materials and methods Review. Results The use of OCT in the monitoring of retinitis ...
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    4. Remineralizing Potential of Nano-Silver-Fluoride for Tooth Enamel: An Optical Coherence Tomography Analysis

      Remineralizing Potential of Nano-Silver-Fluoride for Tooth Enamel: An Optical Coherence Tomography Analysis
      Objective: To evaluate the use of nanosilver fluoride in the enamel remineralization process through optical coherence tomography . Material and Methods: All samples were submitted to demineralization process by pH cycling during 14 days and randomly distributed into three groups (n = 11): Nanosilver Fluoride (NSF), Sodium fluoride (NaF), and negative control. Optical coherence tomography images were acquired at three different moments: initial stage (T0), post caries formation (T1), and post pH ...
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    5. Determining Optic Nerve Cupping Using Optical Coherence Tomography (OCT) versus a New Electronic Mobile Device

      Determining Optic Nerve Cupping Using Optical Coherence Tomography (OCT) versus a New Electronic Mobile Device
      Purpose: We present a new device that may aid in glaucoma screening. The vertical cup-to-disc ratio (CDR) obtained from a new electronic mobile device (EMD) were compared to those obtained from a spectral domain optical coherence tomography (sdOCT). In addition, results from examiners evaluations were compared to the results mentioned above. Methods: A single-masked study was performed to evaluate the CDR results from 110 eyes from 110 subjects between ages ...
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    6. Optical coherence tomography follow‐up of patients treated from periodontal disease

      Optical coherence tomography follow‐up of patients treated from periodontal disease
      Optical coherence tomography (OCT) is one of the most important imaging modalities for biophotonics applications. In this work, an important step towards the clinical use of OCT in dental practice is reported, by following‐up patients treated from periodontal disease (PD). 147 vestibular dental sites from 14 patients diagnosed with PD were evaluated prior and after treatment, using a swept‐source OCT and two periodontal probes (Florida probe and North ...
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    7. Retinal Never Fiber Layer Thickness In Chronic Renal Failure: Analysis By Optical Coherence Tomography

      Retinal Never Fiber Layer Thickness In Chronic Renal Failure: Analysis By Optical Coherence Tomography
      Purpose : To analyze the retinal nerve fiber layer thickness (RNFL) in CKD patients by means of optical coherence tomography, ascertaining mean overall RNFL and mean RNFL in the nasal, temporal, superior, and inferior quadrants and comparing these measurements to those obtained from a control group. Methods : This was a prospective, analytical, cross-sectional case-control study. The study sample comprised 22 eyes from 11 patients and 33 eyes from 17 patients in ...
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    8. Evaluation of the polymerization shrinkage of experimental flowable composite resins through optical coherence tomography

      Evaluation of the polymerization shrinkage of experimental flowable composite resins through optical coherence tomography
      This study evaluated the polymerization shrinkage of two experimental flowable composite resins (CR) with different proportions of Urethane dimethacrylate (UDMA)/triethylene glycol dimethacrylate (TEGDMA) monomers in the organic matrix (50:50 and 60:40, respectively). A commercially available flowable CR, Tetric N-Flow (Ivoclair Vivadent, Liechtenstein, Germany), was employed as the control group. The resins were inserted in a cylindrical teflon mold (7 mm diameter, 0.6 mm height) and scanned ...
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    9. Silver nanoparticles as optical clearing agent enhancers to improve caries diagnostic by optical coherence tomography

      Silver nanoparticles as optical clearing agent enhancers to improve caries diagnostic by optical coherence tomography
      The use of silver nanoparticles as optical clearing agent (OCA) enhancers to improve caries diagnostic by optical coherence tomography (OCT) is demonstrated here. Five molars with no evident cavitation were selected. The OCAs were based on aqueous solution of silver nanoparticles (AgNP, 1.18x 10 14 particles/mL, 10nm) and its dilution at 10% in glycerol. Teeth were placed on a platform with a micrometric screw, and after applying the ...
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    10. Comparison of microtomography and optical coherence tomography on apical endodontic filling analysis

      Comparison of microtomography and optical coherence tomography on apical endodontic filling analysis
      OBJECTIVES: To compare in vitro differences in the apical filling regarding working length (WL) change and presence of voids and to validate OCT in comparison to CT for the detection of failures in the apical filling. METHODS: Forty-five uniradicular teeth with round canals, divided into groups (n=15) following the obturation protocols: CL (Lateral condensation), TMC (thermomechanical compaction) and SC (single cone). Samples were scanned using CT (parameters: 80 kV ...
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    11. 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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    12. 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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    13. 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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    14. 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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  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