Main Page
About
Faculty
Dean
Organizational Structure
Academic Accreditations
"Strategic Plan "Ebtesama-Smile
Administration
Vice Deanships
Academic Affairs
Female Section
Graduate Studies and Research
University Dental Hospital
Development
Departments
Diagnostic Oral Sciences
Periodontology
Oral Biology
Oral & Maxillofacial Prosthodontics
Oral & Maxillofacial Surgery
Endodontics
Restorative Dentistry
Orthodontics
Pediatric Dentistry
Dental Public Health
Goals and Objectives
Education
Bachelor
Interns Program
Postgraduate Studies
Research
University Dental Hospital
Community Services
House of Expertise
Files
Contact Us
Directory of Faculty Staff
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Dentistry
Document Details
Document Type
:
Article In Journal
Document Title
:
Temperature Effect On Impact Properties Of Denture Base Acrylic Material
Temperature Effect On Impact Properties Of Denture Base Acrylic Material
Document Language
:
English
Abstract
:
This work is devoted to explore the behavior of a Widely used denture base material during impact loading under different temperatures. Eight different groups of standard Izod impact testing specimens were tested at different temperatures. The chosen temperatures (0, 10, 18. 28. 45, 55. 70° C) were chosen to cover a wide range similar to actual service temperatures. All specimens were soaked in distilled water at the designated temperatures in order to gain the temperature. One hour and two hours were chosen as the time for soaking and the results of both were recorded. The results did not show a clear transition temperature similar to metals. However, a slight increase of fracture energy was developed with the increase of temperature then followed by a decrease in fracture energy with further increase of temperature. An explanation of fracture energy increase is due to the increase of internal frictional resistance of polymer chains movement due to the impact load. This movement becomes easier at higher temperatures. which contribute to a decrease in fracture energy with further increase in temperatures also, the same tests were repeated with specimens with formed notches. These specimens showed a higher increase in fracture energy compared with the cut notch specimens.
ISSN
:
0
Journal Name
:
Alexandria Dental Journal
Volume
:
24
Issue Number
:
3
Publishing Year
:
1999 AH
1999 AD
Article Type
:
Article
Added Date
:
Saturday, June 21, 2008
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد شحاته
Shehata, Mohamed
Researcher
Doctorate
mmmuhammad@kau.edu.sa
Files
File Name
Type
Description
Temperature Effect On Impact Properties Of Denture Base Acrylic Material.pdf
pdf
Back To Researches Page