1. Anderson S. L. Gomes

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    1. Mentioned In 36 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. EVALUATION OF POROSITY AND BIOFILM FORMATION IN RELINE RESINS THROUGH OPTICAL COHERENCE TOMOGRAPHY

      EVALUATION OF POROSITY AND BIOFILM FORMATION IN RELINE RESINS THROUGH OPTICAL COHERENCE TOMOGRAPHY
      Objective To evaluate the porosity and adhesion of mixed colony microorganisms in reline resins by means of optical coherence tomography (OCT). Study Design Two commercial brands of reline resins (Soft-Comfort and Coe-Comfort) were used, divided into 2 groups, and 10 samples were made for each group. Samples were submitted to OCT scanning before and after 96 hours inoculation with Candida albicans . The OCT images were composed of 2000 columns and ...
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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. 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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    6. 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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    7. 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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    8. 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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    9. 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 ...
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    10. 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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    11. 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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    12. 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 ...
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    13. 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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    14. 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 ...
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    15. 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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    16. 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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    17. 1-15 of 36 1 2 3 »
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  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