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
:
Assessment of convergence angles of tooth preparations for complete crowns
Assessment of convergence angles of tooth preparations for complete crowns
Document Language
:
English
Abstract
:
Summary Objectives: Convergence angles for complete crown preparations have been recommended at 4-12°. However, practitioners have difficulty meeting these recommendations. This study measured and compared the convergence angles of tooth preparations for complete crowns prepared at three Colleges of Dentistry: the University of Tanta, Egypt, King Abdulaziz University, Saudi Arabia, and The Ohio State University, Columbus, Ohio Methods: The c onvergence angles of 499 tooth preparations for complete crowns were evaluated. These comprised of a random sample of 262 teeth prepared by thirdyear dental students at the University of Tanta on extracted molars under normal preclinical conditions, 37 preparations on molar teeth on typodonts done by firstyear dental students. The Ohio State University and 200 molar typodont complete crown preparations done by fourth-year dental students at King Abdulaziz University, Saudi Arabia. The bucco-lingual and mesio -distal convergence angles of each preparation were measured with a goniometer microscope. Mean convergence angles were calculated, and differences between groups were tested for statistical significance with analysis of variance (ANOVA) at 5% level of confidence. Results: Convergence angle measurements were significantly different between the groups and the dimensions (P<:0.001). The greatest convergence value (19.8 ± 10.0) was for bucco-lingual measurements prepared by Egyptian dental students. The smallest convergence value (14.1 ± 3.8) was for mesio-distal measurements prepared by Saudi dental students. Conclusions: This study emphasized the difference between what is taught at dental schools (what is theoretically possible) and the school results of actual practice. There was a considerable disparity between the convergent angles recorded in this study and the ideal configurations recommended in fixed prosthodontic textbooks and the dental literature.
ISSN
:
0
Journal Name
:
Journal of Dentistry
Volume
:
33
Issue Number
:
1
Publishing Year
:
2005 AH
2005 AD
Article Type
:
Article
Added Date
:
Monday, December 10, 2007
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد عياد
Ayad, Mohamed
Investigator
Doctorate
mayad@kau.edu.sa
عب الحميد مغربي
Maghrabi, Abdulhamid
Researcher
Doctorate
amaghrabi@kau.edu.sa
Stephen Rosenstiel
Rosenstiel, Stephen
Researcher
Doctorate
Files
File Name
Type
Description
Assessment of convergence angles of tooth preparations for complete crowns.pdf
pdf
Back To Researches Page