ERA

Download the full-sized PDF of The Effects of Elastic Size and Archwire Type on 3-Dimensional Force Systems When Using Class II Interarch ElasticsDownload the full-sized PDF

Analytics

Share

Permanent link (DOI): https://doi.org/10.7939/R3F766K4M

Download

Export to: EndNote  |  Zotero  |  Mendeley

Communities

This file is in the following communities:

Graduate Studies and Research, Faculty of

Collections

This file is in the following collections:

Theses and Dissertations

The Effects of Elastic Size and Archwire Type on 3-Dimensional Force Systems When Using Class II Interarch Elastics Open Access

Descriptions

Other title
Subject/Keyword
Class II elastics
Force
Orthodontics
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Stanley, Joseph C
Supervisor and department
Major, Paul (Dentistry)
Examining committee member and department
Romanyk, Daniel (Dentistry)
Heo, Giseon (Dentistry)
Carey, Jason (Engineering)
El-Bialy, Tarek (Dentistry)
Department
Medical Sciences-Orthodontics
Specialization

Date accepted
2017-01-30T16:14:48Z
Graduation date
2017-06:Spring 2017
Degree
Master of Science
Degree level
Master's
Abstract
Abstract Objectives: An orthodontic simulator (OSIM) device was used to compare the force systems generated by class II elastics on a ½ cusp class II malocclusion using four combinations of two elastic types and two archwire types. Methods: 3-dimensional forces and moments due to class II elastics were measured individually for each tooth (7-7) using Damon Q brackets on the maxillary and mandibular arches. Four test groups (n=44) were compared, each of a different combination of two elastic types (3/16", 2oz and 4.5oz) and two archwire types (0.014" nickel titanium and 0.019" x 0.025" stainless steel). Results: Only the upper canines and lower first molars recorded clinically significant forces (0.3N) and moments (5Nmm). 2oz and 4.5oz class II elastics produced clinically significant vertical extrusive forces and horizontal forces along the archwire to normalize a class II malocclusion. Stainless steel archwire minimized the extrusive forces of the 4.5oz elastics compared to nickel titanium archwire Conclusions: 2oz and 4oz class II elastics produced clinically significant vertical extrusive forces and horizontal forces along the archwire. Archwire type had no effect on 2oz class II elastics whereas 0.019" x 0.025"stainless steel significantly reduced the vertical extrusive effects of the larger 4.5oz elastics.
Language
English
DOI
doi:10.7939/R3F766K4M
Rights
This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for the purpose of private, scholarly or scientific research. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.
Citation for previous publication

File Details

Date Uploaded
Date Modified
2017-01-30T23:14:48.991+00:00
Audit Status
Audits have not yet been run on this file.
Characterization
File format: pdf (PDF/A)
Mime type: application/pdf
File size: 8788340
Last modified: 2017:06:13 12:11:52-06:00
Filename: Stanley_Joseph_C_201701_MSc.pdf
Original checksum: 0e373c82270dbe0c1d3f0e8baf50abf9
Activity of users you follow
User Activity Date