Olga Polydorou

ORCID: 0000-0003-1428-0843
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About
Contact & Profiles
Research Areas
  • Dental materials and restorations
  • Dental Erosion and Treatment
  • Dental Anxiety and Anesthesia Techniques
  • Endodontics and Root Canal Treatments
  • Dental Radiography and Imaging
  • Dental Implant Techniques and Outcomes
  • Bone Tissue Engineering Materials
  • Effects and risks of endocrine disrupting chemicals
  • Dental Research and COVID-19
  • Medical and Biological Ozone Research
  • Dental Trauma and Treatments
  • Dental Health and Care Utilization
  • Laser Applications in Dentistry and Medicine
  • Microplastics and Plastic Pollution
  • Estrogen and related hormone effects
  • Oral microbiology and periodontitis research
  • Orthodontics and Dentofacial Orthopedics
  • Occupational health in dentistry
  • Periodontal Regeneration and Treatments
  • Building materials and conservation
  • Analytical chemistry methods development
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Bone and Dental Protein Studies
  • Hydrogen's biological and therapeutic effects
  • S100 Proteins and Annexins

University Medical Center Freiburg
2008-2023

University of Freiburg
2006-2023

Zentrum für Zahn-, Mund- und Kieferheilkunde Poliklinik für Zahnerhaltung und Parodontologie
2023

Poliklinik für Zahnerhaltung und Parodontologie
2017

The elution of monomers from composite materials influences the biocompatibility dental restorations. purpose present study was to investigate [bisphenol A glycidyl methacrylate (BisGMA), triethylene glycol dimethacrylate (TEGDMA), urethane (UDMA), and bisphenol (BPA)] two light‐cured (nanohybrid ormocer) a chemically cured material, after different curing times (0, 20, 40 80 s) storage periods (24 h, 7 d, 28 1 yr curing). Each specimen stored in ml 75% ethanol. This medium renewed 24 yr....

10.1111/j.1600-0722.2008.00594.x article EN European Journal Of Oral Sciences 2009-01-16

Microorganisms remaining beneath restorations can cause secondary caries and pulp damage. Because of this, antimicrobial treatment could be useful. The aim this study was to evaluate the antibacterial effect HealOzone device on Streptococcus mutans compare it with already proven activity two dentin‐bonding systems. Thirty‐five human molars were divided into 5 groups. Cavities then cut teeth ( n = 28 cavities per group). After sterilization, left in broth cultures 10 6 colony‐forming units...

10.1111/j.1600-0722.2006.00363.x article EN European Journal Of Oral Sciences 2006-07-25

Clinical Relevance In-office and home bleaching agents do not cause changes that would demand replacement of the restorations when are applied on polished surfaces aesthetic dental restorative materials. Repolishing composites is suggested in order to overcome possible problems might result from slight surface produced by bleaching.

10.2341/05-75 article EN Operative Dentistry 2006-07-01

To evaluate whether artificial resin teeth could replace extracted human in pre-clinical endodontic training and if this teaching approach influences the outcome of root canal treatment on patients.In a course, students group 1 (n = 44) performed simulated exercises four plastic blocks three teeth. Students 2 45) their (Real-T Endo, Acadental, Lenexa, KS, USA). Both groups first treatments patients following term. Radiographs taken during were used for evaluation outcome. Distances between...

10.1111/iej.12385 article EN International Endodontic Journal 2014-09-29

Abstract The aim of this study was to evaluate the effect four different storage media on elution monomers from two composite materials. Samples ( n = 10, diameter: 4.5 mm, thickness: 2 mm) materials (Ceram X™ & Filtek™ Supreme XT) were stored after polymerization in (NaCl, saliva, ethanol 75% acetone) for 24 h, 7 days, and 28 days. From medium each tested time period, samples prepared analyzed by LC‐MS/MS, BisGMA, TEGDMA, HEMA, Bisphenol A, types UDMA. No detected Ceram X™,...

10.1002/jbm.b.31923 article EN Journal of Biomedical Materials Research Part B Applied Biomaterials 2011-09-27

SUMMARY The aim of this study was to evaluate the color stability vital bleaching using a halogen unit, laser, or only chemical activation up three months after treatment. A total 60 patients were divided into groups, and their teeth bleached with 38% hydrogen peroxide methods: acceleration process (eight minutes), laser (30 seconds), only. All maximum four times (4 × 15 minutes) until change six shade tabs took place. evaluated both visually spectrophotometer before bleaching, immediately...

10.2341/12-041-c article EN Operative Dentistry 2012-07-08

Clinical Relevance Light activation does not seem to increase the efficacy of bleaching agents tested. After procedure, color stability and enamel dehydration are supposed be two very important parameters in order evaluate systems.

10.2341/07-148 article EN Operative Dentistry 2008-01-01

In recent years, the elution of monomers from dental materials has been a cause for public concern. Urethane dimethacrylate, commonly abbreviated to UDMA, is one that are most often tested with regard and cytotoxicity resin-based materials. Although each chemical name represents type, structure, molecular weight molecule, it does not seem be same UDMA. present paper, different forms UDMA presented. These include those used by manufacturers produce composite types urethane dimethacrylate in...

10.1002/jbm.b.31383 article EN Journal of Biomedical Materials Research Part B Applied Biomaterials 2009-04-22

Abstract Purpose To evaluate and compare the mean surface roughness (Ra) of one ceramic resin composite material used for indirect restorations, after grinding repolishing by intraoral means. Materials Methods The materials were lithium disilicate glass IPS e.max Press (EMP) restoration system Gradia (GR). Twelve specimen disks prepared from each according to manufacturer material. Five initial measurements Ra (Ra 1 ) made on as a referral basis, specimens ground with fine (red) diamond bur....

10.1111/jopr.12390 article EN Journal of Prosthodontics 2015-10-21

The aim of this study was to evaluate the elution substances from different materials used for manufacturing temporary indirect restorations, after storage in saliva and ethanol 75%. 10 samples three chemically cured (Protemp 3 Garant, Systemp.c&amp;b, Trim) one light-cured material (Clip F) were stored 75% 24 h, 7, days 28 days. From media at each time period, prepared analysed by LC-MS/MS, order access monomers. results differed among (<mml:math...

10.1155/2015/617407 article EN cc-by International Journal of Polymer Science 2015-01-01

To investigate the use of a zinc oxide/zinc sulphate-based cement (Coltosol(®) F, Coltène Whaledent, Cuyahoga Falls, OH, USA) as temporary filling material during multiple-visit root canal treatments and occurrence cracks within or tooth.Root canals one hundred twenty-two extracted human molars were prepared using ProTaper instruments up to size F2. After preparation, standardized mesial-occlusal-distal cavities prepared. The buccal-lingual/palatal width was 4.5 mm), so that remaining cavity...

10.1111/iej.12280 article EN International Endodontic Journal 2014-03-20
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