1. Anderson S. L. Gomes

    0 Comments Leave a Comment

    1-15 of 30 1 2 »
    1. Mentioned In 30 Articles

    2. 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 ...
      Read Full Article
    3. 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
      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 ...
      Read Full Article
    4. 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 ...
      Read Full Article
    5. 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 ...
      Read Full Article
    6. Optical coherence tomography as a method for quantitative skin evaluation in systemic sclerosis

      Optical coherence tomography as a method for quantitative skin evaluation in systemic sclerosis
      Improved, non-invasive techniques for the diagnosis, classification and monitoring of patients with systemic sclerosis (SSc) are needed. One potential technique for quantifying the extent of cutaneous sclerosis in these patients is optical coherence tomography (OCT). 1 , 2 Recently, Abignano et al 3 suggested the use of OCT as a feasible and reliable technique to evaluate skin fibrosis in SSc. Based on that initial work, the aim of this study was ...
      Read Full Article
    7. 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 ...
      Read Full Article
    8. Mitigation of enamel erosion using commercial toothpastes evaluated with optical coherence tomography

      Mitigation of enamel erosion using commercial toothpastes evaluated with optical coherence tomography
      The aim of this study was to evaluate the efficacy of commercial toothpastes containing sodium fluoride (NaF), stannous fluoride (SnF2), or casein phosphopeptides (CPP)-amorphous calcium phosphate (ACP)/NaF regarding their potential to inhibit enamel erosion. Twenty-eight 44 mm enamel specimens were randomly allocated into 4 groups (n=7): negative control; Pronamel (NaF); Pro Health (SnF 2 /NaF); Mi Paste Plus (CPP-ACP/NaF). Erosive cycles with 0.5% citric acid ...
      Read Full Article
    9. 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 ...
      Read Full Article
    10. 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 ...
      Read Full Article
    11. 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 ...
      Read Full Article
    12. 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 ...
      Read Full Article
    13. Characterization of skin Port-Wine Stain and Hemangioma vascular lesions using Doppler OCT

      Characterization of skin Port-Wine Stain and Hemangioma vascular lesions using Doppler OCT
      Background Port-Wine Stains (PWS) are vascular malformations of the dermis, whereas hemangiomas are vascular tumors usually present at birth. Early non-invasive diagnosis of the vascular lesion would greatly increase treatment efficiency. We propose to use optical coherence tomography (OCT), a morphological imaging technique, coupled with functional blood-flow Doppler modality. Methods We imaged lesions from five patients: one with PWS, four with hemangiomas, using a Thorlabs Swept-Source OCT system at 1325 ...
      Read Full Article
    14. 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 ...
      Read Full Article
    15. Comparative analysis of gingival phenotype in animal and human experimental models using optical coherence tomography in a non-invasive approach

      Comparative analysis of gingival phenotype in animal and human experimental models using optical coherence tomography in a non-invasive approach
      Imaging methods are widely used in diagnostic and among the diversity of modalities, optical coherence tomography (OCT) is nowadays commercially available and considered the most innovative technique used for imaging applications, in both medical and non-medical applications. In this study, we exploit the OCT technique in the oral cavity for identification and differentiation between free and attached gingiva, as well as determining the gingival phenotype, an important factor to determination ...
      Read Full Article
    16. Optical coherence tomography applied to the evaluation of wear of composite resin for posterior teeth

      Optical coherence tomography applied to the evaluation of wear of composite resin for posterior teeth
      Resin composites are widely used as restorative materials due to their excellent aesthetical and mechanical properties. Posterior teeth are constantly submitted to occlusal stress and upon restoration require more resistant resins. The aim of this study was to analyze in vitro the wear suffered over time by restorations in resin composite in posterior teeth, by Optical Coherence Tomography (OCT). 30 molars had occlusal cavities prepared and were randomly divided into ...
      Read Full Article
    17. 1-15 of 30 1 2 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Anderson S. L. Gomes

    Anderson S. L. Gomes

    Anderson Stevens Leônidas Gomes received his PhD degree in Physics, from the Imperial College of Sicence, Technology and Medicine, University of London (1986), and his MSc in Physics, from the Universidade Federal de Pernambuco (1982). He is Full Professor, head of Laboratory of Photonics and Biophotonics of the Physics Department, Universidade Federal of Pernambuco, Brazil. His scientific areas of interests are Nanophotonics, Biophotonics, Nonlinear Optics and Optical Communications. He is co-author of over 220 scientific articles (Factor H: 28) and oversaw more than 20 MSc Dissertation and 16 PhD thesis. He is fellow of the Optical Society of America, in which was President of the International Council between 2011-2012. He is an elected member of the Brazilian Academy of Science, and is also member of the Brazilian Physics Society and the Brazilian Society for the Advancement of Science. He served at the Brazilian scientific committees CNPq, FACEPE and CAPES. He is referee of several international journal in his knowledge area, and associate editor of the Advances in Optics and Photonics, from Optical Society of America