Tehran University of Medical Sciences
Office of Vice-Chancellor for Global Strategies & International Affairs
International Human Capacity Development (IHCD)
Code : 9345-343088      Publish Date : Sunday, November 30, 2014 Visit : 1743

Intl. Congress form | International Congress Report | International Congress Report For Faculty | Annual Meeting of The Academy of Dental Materials

Annual Meeting of The Academy of Dental Materials
The report of Annual Meeting of The Academy of Dental Materials by Dr. Marjan Behroozibakhsh
 
Application Code :
306-0214-0101
 
Created Date : Wednesday, September 17, 2014 15:32:15Update Date : Tuesday, November 18, 2014 22:07:10IP Address : 46.41.235.145
Submit Date : Tuesday, November 18, 2014 22:08:32Email : behroozibakhsh@sina.tums.ac.ir
Personal Information
Name : marjan
Surname : behroozibakhsh
School/Research center : School of Dentistry
If you choose other, please name your Research center :  
Possition : Assistant professor
Tel : +21-88-991649
Information of Congress
Title of the Congress :  Annual Meeting of The Academy of Dental Materials
Title of your Abstract : Effect of a Synthetic nanocrystalline-Fluorohydroxyapatite on the eroded enamel lesions
country : Italy
From : Wednesday, October 08, 2014
To : Saturday, October 11, 2014
Abstract(Please copy/paste the abstract send to the congress) : Effect of a Synthetic nanocrystalline-Fluorohydroxyapatite on the eroded enamel lesions

Marjan Behroozibakhsh *1 , Farhad Shafiei1, Tabassom Hooshmand1, Fathollah Moztarzadeh2, Mohammadreza Tahriri 2, Hossein Bagheri Gorgani 1, Amirhosein Pourfarid3

1 Department of Dental Biomaterials, School of Dentistry/Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
2 Biomaterials Group, Faculty of Biomedical Engineering (Center of Excellence), Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran
3-DDS
Purpose: The application of Hydroxyapatite based materials in the repair of early enamel lesions has received considerable attention, but the repair and protective mechanism are still open for debate.
The purpose of this research was to determine the effect of nano-fluorohydroxyapatite on defected enamel and remineralization process
Methods: In this research, first a fluorine-substituted hydroxyapatite ceramic [Ca5(PO4)3(OH)0.59F0.41] was synthesized via pH-cycling method. The powder was characterized using scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infra-red (FTIR), X-ray diffraction (XRD) and F-selective electrode. In order to remineralization of demineralized areas the specimens were immersed into the reminerilzation solution for 5 minutes three times a day for 7 days. The remineralized surfaces were examined using SEM, ATR-FTIR and AFM.
Results: TEM micrographs of powders showed that the microstructure of the FHA particles had perfectly rod-like shape that their lengths and diameters were about 10–40 nm and 20–50 nm, respectively. FT-IR and F-selective electrode analysis approved fluorine substitution in apatite structure.
Evaluation of remineralized samples by AFM and SEM images showed the demineralized enamel surfaces were covered with synthetic powders after 7 days. AFM observation revealed changes on surface topography to a layered pattern after remineralization by nano-FHA crystallites. A similarity between covered layer and enamel surface was found with ATR-FTIR analysis.
Conclusions: Our findings suggest that fluorohydroxyapatite nano particles may contribute to the repair of demineralized enamel with overlaying on defective areas and can use as an enamel remineralizing agent.
 
Keywords of your Abstract : nano-fluorohudroxyapatite, Enamel, Remineralization
Acceptance Letter : http://gsia.tums.ac.ir/images/UserFiles/21301/Forms/306/acceptance_letter_-_mbehroozibakhsh_-_Yahoo_Mail.pdf
The presentation : Poster
The Cover of Abstract book :
Published abstract in the abstract book with the related code : http://gsia.tums.ac.ir/images/UserFiles/21301/Forms/306/e243-main.pdf
Where has your abstract been indexed? : ISI
If you choose other, please name :  
The Congress Reporting Form
How many volunteers were present at the Congress? : 349
Delegates from which countries presented in the congress? : from all countries around the world including USA, Italy, Germany, Japan, China, Brazil,UK.......
Were the delegates of any other organizations present in the congress? : No
If yes, please write the names of the organizations in the box :  
What were the responses to your talking points? Were specific questions or concerns raised? : yes. About the reults and benefits of this remineralizing agent. About the clinical usage of this remineralyzing agent and the process of
If you met staff members, please list their full names & positions. : Dr Hossein Bagheri. PhD student of dental materials
Please inform us if there are any follow up actions we need to talk with the members of the congress : Non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non nno non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non non
Your experiences about the travel processes(Providing ticket, accommodation,...) : --
Please give a briefing of your own observations and outcomes of the congress: : Bologna is an old, beautiful city of Italy. The place of congress was in the center of city and in an old palace. Up to 500 researchers and dentists had participated in this congress. Two volunteers from iran had participated in this congress which both of them were from Tehran University of Medical sciences new researches were presented by volunteers of countries including USA, Italy ,UK and ........ Some workshops presented by the most famous researchers in the field of dental materials . I participated in two of them that were about micro shear bond test and stress release in dental materials. Both workshop were very useful for me.