International Human Capacity Development (IHCD)

Tehran University of Medical Sciences
Office of Vice-Chancellor for Global Strategies & International Affairs
International Human Capacity Development (IHCD)

Code : 9345-353818 Publish Date : Saturday, December 30, 2017 Visit : 1474

Intl. Congress form | International Congress Report | International Congress Report For Faculty | The report of 41 st annual conference of European Prosthodontic association by Dr. Faezeh Atri

The report of 41 st annual conference of European Prosthodontic association by Dr. Faezeh Atri

Application Code :

762-0217-0065

Created Date : Tuesday, October 3, 2017-13:11 13:11:36Update Date : Sunday, December 3, 2017-10:36 10:36:56
IP Address : 194.225.59.130Submit Date : Sunday, December 3, 2017-10:37 10:37:30Email : f-atri@sina.tums.ac.ir

Personal Information

Name :	Faezeh
Surname :	Atri
School/Research center :	School of Dentistry
If you choose other, please name your Research center :
Position :	Assistant professor
Tel :	+98-21-88364656

Information of Congress

Title of the Congress :	41 st annual conference of European Prosthodontic association
Title of your Abstract :	Deposition of Hydroxyapatite Nano-Particle on Zirconia to Improve its Bonding
Destination Country :	Romania
From :	Thursday, September 28, 2017
To :	Saturday, September 30, 2017
Abstract(Please copy/paste the abstract send to the congress) :	Deposition of Hydroxyapatite Nano-Particle on Zirconia to Improve its Bonding Faezeh Atri 1, Vania Rasaie 2, Abbas Azari 1, Sakineh Nikzad 1, Abbas Fazel Anvari-Yazdi 3 1) Tehran University of Medical Sciences, Tehran, Iran 2) Ilam University of Medical Sciences, Ilam, Iran 3) Materials and Biomaterial Research Center, Tehran, Iran Iran Purpose: Although Zirconia has many advantages in the restorative dentistry, some concerns exist about its bonding strength to different dental substrates. On the other hand, Hydroxyapatite is an excellent biocompatible material with good bonding ability. In this study, it was hypothesized that combining the mechanical properties of Zirconia with bonding features of Hydroxyapatite would improve bond strength of Zirconia to different dental substrates. Material and Method: Forty five Zirconia blocks were randomly divided into the 3 groups; Hydroxyapatite deposition, sandblasting and control. In the first group, the surface of zirconia blocks was thermal coated by Hydroxyapatite nano-particle. In the second group, the zirconia blocks were sandblasted with Al2O3 50 μ particles. In the control group, no surface treatment was done. The blocks were bonded to cement and following load application, the micro-shear bond strength of Zirconia to the resin cement was measured. The bond strength values were analyzed by Kruskal-Wallis test in 3 groups and paired comparisons were made by Mann-Whitney U test. The failure patterns of the specimens were studied by a stereomicroscope and a scanning electron microscope and then analyzed by the chi-square test (significance level = 0.05). Result: Deposition of hydroxyapatite on the zirconia surface significantly improved its bond strength to the resin cement in comparison with the control specimens (p < 0.0001). Also, the bond strength was similar to the sandblasted group (p =0.34). The sandblasted and control group only showed adhesive failure, but the hydroxyapatite coated group had mixed failures, indicating the better quality of bonding (p <0.0001). Conclusion: Hydroxyapatite coating on the Zirconia surface improved the bond strength quality and values.
Keywords of your Abstract :	Zirconia, Hydroxyapatite, Bonding strength, Resin cement
Acceptance Letter :	http://gsia.tums.ac.ir/images/UserFiles/41077/Forms/762/(61) 41st EPA Annual Congress-2017 – Acceptance Note_1.pdf
The presentation :	Oral
The Cover of Abstract book :	http://gsia.tums.ac.ir/images/UserFiles/41077/Forms/762/cover_2.pdf
Published abstract in the abstract book with the related code :	http://gsia.tums.ac.ir/images/UserFiles/41077/Forms/762/abstract.pdf
Where has your abstract been indexed? :	none
If you choose other, please name :

The Congress Reporting Form

How many volunteers were present at the Congress? :	more than 200
Delegates from which countries presented in the congress? :	Netherland, Canada, England, Romania, Turkey, Greece, Japan, Spain, Italy, Poland, Republic of Moldova, Serbia, Croatia, Republic of Korea, Bulgaria, Switzerland, Albania, USA
Were the delegates of any other organizations present in the congress? :	Yes
If yes, please write the names of the organizations in the box :	EPA, ICOI, ADRE, ASRRO
What were the responses to your talking points? Were specific questions or concerns raised? :
If you met staff members, please list their full names & positions. :	no
Please inform us if there are any follow up actions we need to talk with the members of the congress :	Prof Dr Hans Van Pelt had an interesting workshop about "Digital occlusal analysis in the new age of dentistry". After, introducing IRAN, He was so interested to come to IRAN and have workshop or lecture here.
Your experiences about the travel processes(Providing ticket, accommodation,...) :	it was good and convenient.
Please give a briefing of your own observations and outcomes of the congress: :	so interesting, I communicated to lots of lecturers from different countries. They invited me to some congresses and courses. I planned a research to do as multicenter study with specialist from Netherland.