1. Ana Karla Braz

    0 Comments Leave a Comment

    1-10 of 10
    1. Mentioned In 10 Articles

    2. 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
    3. 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 ...
      Read Full Article
    4. 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 ...
      Read Full Article
    5. Effectiveness of varnish with CPP–ACP in prevention of caries lesions around orthodontic brackets: an OCT evaluation

      Effectiveness of varnish with CPP–ACP in prevention of caries lesions around orthodontic brackets: an OCT evaluation
      Objective: To evaluate the in vitro efficiency of applying varnish containing casein phosphopeptide (CPP) and amorphous calcium phosphate (ACP) in prevention of caries lesions around orthodontic brackets. Materials and methods: For this purpose, brackets were bonded to the vestibular surface of bovine incisors, and eight groups were formed ( n = 15) according to exposure of oral hygiene substances and enamel varnish: 1 (control) brushing only performed, 2 (control) brushing + use of ...
      Read Full Article
    6. Optical coherence tomography for debonding evaluation: An in-vitro qualitative study

      Optical coherence tomography for debonding evaluation: An in-vitro qualitative study
      Introduction The purpose of this research was to demonstrate the potential of the optical coherence tomography technique on the evaluation of changes and damages in the enamel structure caused by debonding and cleanup procedures. Methods Twin metal and ceramic brackets were bonded to the labial enamel surfaces of 120 incisors; the brackets were debonded 24 hours later. The anterior surfaces of the teeth were scanned, and optical coherence tomography images ...
      Read Full Article
    7. In situ gold nanoparticles formation: contrast agent for dental optical coherence tomography

      In situ gold nanoparticles formation: contrast agent for dental optical coherence tomography
      In this work we demonstrate the potential use of gold nanoparticles as contrast agents for the optical coherence tomography (OCT) imaging technique in dentistry. Here, a new in situ photothermal reduction procedure was developed, producing spherical gold nanoparticles inside dentinal layers and tubules. Gold ions were dispersed in the primer of commercially available dental bonding systems. After the application and permeation in dentin by the modified adhesive systems, the dental ...
      Read Full Article
    8. Fracture process characterization of fiber-reinforced dental composites evaluated by optical coherence tomography, SEM and optical microscopy

      Fracture process characterization of fiber-reinforced dental composites evaluated by optical coherence tomography, SEM and optical microscopy
      This study used optical coherence tomography (OCT) compared to scanning electron microscopy (SEM) and optical microscopy (OM) to evaluate qualitatively crack propagation and final fracture in restorative composite materials - Filtek Z250 and Filtek Z350 (3M ESPE) with fiber reinforcement after cyclic loading. Samples were made using a split mold. Initially, 3point bending tests were performed to determine the maximum force and tension at the fracture moment using samples without fiber ...
      Read Full Article
    9. Evaluation of the integrity of dental sealants by optical coherence tomography

      Evaluation of the integrity of dental sealants by optical coherence tomography
      Objectives The purpose of the present research was to demonstrate images of failures into the structure of pit and fissure sealants using optical coherence tomography (OCT). Methods Five human third molars were selected and the sealant ALPHA SEAL LIGHT/DFL was applied according to the manufacturer instructions. For evaluation of the structure of pit and fissure sealants, twenty OCT images of each tooth were performed before and after application of ...
      Read Full Article
    10. Evaluation of crack propagation in dental composites by optical coherence tomography

      Evaluation of crack propagation in dental composites by optical coherence tomography
      Abstract Objectives The purpose of this study was to image the sites of fracture initiation and slow crack propagation in a fiber reinforced composite, using the optical coherence tomography (OCT) technique. Methods Bar specimens (2 mm × 3 mm × 25 mm) of fiber reinforced composite were mechanically and thermally cycled to emulate oral conditions. The interior of these samples was analyzed prior to and after loading, using OCT. The device used ...
      Read Full Article
    11. 1-10 of 10
  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 Ana Karla Braz

    Ana Karla Braz

     

    Ana Karla Souza Braz has recently completed her Master degree (June 2008) at the graduate program in Odontology of the Universidade Federal de Pernambuco, Brazil. The subject of her dissertation was on the applications of optical coherence tomography to the characterization of dental materials. This work was part of the MSc dissertation supervised by Prof Anderson S. L. Gomes.