A5077277044- Advanced Fiber Optic Sensors
- Dental Implant Techniques and Outcomes
- Laser Applications in Dentistry and Medicine
- Dental Radiography and Imaging
- Syphilis Diagnosis and Treatment
- Dental materials and restorations
- Optical Coherence Tomography Applications
- Analytical Chemistry and Sensors
- Orthodontics and Dentofacial Orthopedics
- Bone Metabolism and Diseases
- Electric Power System Optimization
- Autoimmune and Inflammatory Disorders
- Dental Trauma and Treatments
- Electric and Hybrid Vehicle Technologies
- Bone Tissue Engineering Materials
- Advanced MEMS and NEMS Technologies
- Silk-based biomaterials and applications
- Scientific and Engineering Research Topics
- Advanced Sensor Technologies Research
- Facial Trauma and Fracture Management
- Gas Sensing Nanomaterials and Sensors
- Elasticity and Material Modeling
- Optical Imaging and Spectroscopy Techniques
- Photoacoustic and Ultrasonic Imaging
- Bone health and osteoporosis research
Hospital de São João
2024-2025
INESC TEC
2015-2022
Universidade do Porto
2014-2016
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento
2014-2015
University of Aveiro
2004-2014
Instituto Politécnico de Saúde do Norte - CESPU
2006-2011
Cooperativa de Ensino Superior Politécnico e Universitário
2008-2011
Escola Superior de Saúde Norte da Cruz Vermelha Portuguesa
2004-2006
This paper describes the use of fibre Bragg grating (FBG) sensors to measure strains at a mandible surface that are caused by static or impact loads on dental implant. The measuring apparatus uses fixed optical filter reference scheme and is able detect dynamic signals with frequency components up 10 kHz. A dried implanted cadaveric was used strain gauges FBG placed outer in direction longitudinal axis implants were loaded statically dynamically uniaxial recorded. study demonstrates ability...
The use of fibre Bragg grating sensors to study dental materials like resin-based composite and gypsum products is reported. Two commercially available resins three types were tested in order determine polymerization contraction setting expansion. Temperature strain evolution during the hardening phase material also obtained. presented technique can be a good tool for dentists better manipulate predict how it will behave vivo.
The impact of five different water/powder (w/p) ratios in the characterization high strength dental stone was evaluated, since recommendations gypsum' manufacturers are not always correctly followed by prosthesis technicians. Fiber Bragg grating (FBG) sensors were used to measure setting expansion and temperature variation which occurred during reaction for each w/p ratio, as well thermal coefficient. Thick mixtures with low had more crystals impinging upon other crystal growth, resulting...
Engineering techniques used to evaluate strain-stress fields, materials’ mechanical properties, and load transfer mechanisms, among others, are useful tools in the study of biomechanical applications. These engineering tools, as experimental numerical ones, were imported biomechanics, particular dental a few decades ago. Several have been like photoelasticity, ESPI (Electronic Speckle Pattern Interferometry), strain gages, other kinds transducers. However, these some limitations. For...
This paper describes the application of fibre Bragg grating (FBG) sensors to measure strains at outer surface a mandible. The were correlated identical ones obtained with numerical finite element model. For this purpose, synthetic mandible was used and 4 glued Strain patterns assessed for different load configurations which included forces masseter temporal muscles occlusion loads on tooth (incisor, canine molar). Overall using measuring methods identical, namely case symmetric loading. When...
This work describes the use of a fiber Bragg grating sensor (FBG) to measure strains at mandible surface caused by impact loads on dental implant. The apparatus uses tuneable optical filter reference scheme and is able detect dynamic signals with frequency components up 10 kHz. A dried cadaveric implant, FBG placed outer was used. results demonstrate ability as biomechanical sensor.
The performance of a tooth replacement by using dental implant relies on the mechanical and biological capability anatomical substitute to restore lost physiological functions. design an device able properly replace requires study load transfer mechanism at implant-bone interface understanding relevance periodontal ligament (PDL) in this mechanism. PDL is connective soft tissue that provides fixation its bone-socket attenuation occlusal loads. It also ground cells are involved remodelling...
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text M. W. Schiller, I. Abe, P. Carvalho, Lopes, L. R. N. Nogueira, J. Pinto, and A. Simões, "On the Use of FBG Sensors Assess Performance a Dental Implant System," in Optical Fiber Sensors, OSA Technical Digest (CD) (Optica Publishing Group, 2006), paper ThE77. Export BibTex Endnote (RIS) HTML Plain alert Save article
This paper describes an experimental study that aimed at determining the mandibular strains provoked by impact loads on conventional and non-conventional dental implant systems. The novel differs from typical commercial designs because it comprises elastomeric material barrier (stress shock absorber) interposed between artificial crown. A dried implanted cadaveric mandible with strain gauges placed inner outer surfaces in direction of axis was used. implants were loaded dynamically uniaxial...
The use of Fibre Bragg Grating sensors to study the setting expansion dental materials like resin based composites and gypsum is reported. Temperature strain evolution during hardening phase material are obtained.
Cross-bite, as a malocclusion effect, is defined transversal changing of the upper dental arch, in relation to lower and may be classified skeletal, or functional. As consequence, expansion maxilla an effective clinical treatment used correct maxillary discrepancy. The ancient method orthodontics, for correction athresia with posterior crossbite, through opening midpalatal suture (disjunction), using orthodontic- orthopaedic devices. Same controversial discussion arises among clinicians,...
The FBGs (Fibre Bragg Grating) are adequate sensors for measuring strain in biomedical applications. This work evaluates the efficacy of some products and processes, which used decontamination sterilization these sensors. Fibre optic samples, partially stripped primary coating, were contaminated by E. coli S. aureus suffered processes autoclave heating, immersion ethylene oxide, sodium hypochlorite, chloramine T or peracetic acid illumination ultra-violet radiation. After each process fibre...
To the Editor: Syphilis is a multisystemic infection caused by spirochete Treponema pallidum and characterized wide clinical variance of symptoms.1 It most commonly transmitted sexually. The course acquired, untreated syphilis can be divided into four distinct stages depending on its severity: primary, secondary, latent, tertiary.2 In any these stages, without treatment, spread to central nervous system—neurosyphilis. This may asymptomatic or present with vasculitis, stroke, dementia,...
Interferometric fiber optic based sensors, namely those on the Fabry-Perot (F-P) configuration seem very attractive for biomechanical and biomedical applications. The present study is focused proof of concept two developed FP high low pressure measurements fluids. For sensor, it was used a polymeric diaphragm in microstrutured fiber. It obtained good agreement between wavelength shift pressure, tested sensors.
EUniversal project aims to facilitate the use of flexibility services and interlink distribution systems active management with electricity markets. Implementing market-based implies a change in network monitoring control towards more predictive approach. However, integrating cost-effective tools for LV is still quite challenging. Within project, set operation planning have been developed coordinated quantification activation HV, MV networks. The paper presents Portuguese pilot shows...
The EUniversal project aims to facilitate the use of flexibility services and link distribution system's active management with electricity markets. In framework this based on optimal power flow simulations, paper assesses available distributed generation new loads, their impact operational planning network under different conditions. particular, it highlights important role provided by electrical vehicles can play. More generally, contributes question how design local markets, in terms...