Files and links (1)
Free to read and download, Open Access
Thesis
Flexural strength of interim fixed prosthesis materials after simulated function
University of Iowa
Master of Science (MS), University of Iowa
Autumn 2009
DOI: 10.17077/etd.tzwo4kfr
Abstract
<p><strong>Statement of Problem<strong></p>
<p>There are limited studies evaluating the effect of a cyclic load on interim fixed prosthetic materials and its effect on flexural strength.</p>
<p><strong>Purpose of Study<strong></p>
<p>1) To verify the flexural strength of previously studied interim fixed prosthetic materials.</p>
<p>2) To establish the flexural strength of new, advanced generation and untested interim fixed prosthetic materials.</p>
<p>3) To determine the effect of cyclic load on the flexural strength of interim fixed prosthetic materials.</p>
<p><strong>Materials and Methods<strong></p>
<p>Bar-type specimens of Caulk Temporary Bridge Resin, VitaVM CC, Protemp 3 Garant and Radica were fabricated according to International Standards Organization 4049 and American National Standards Institute/American Dental Association specification 27. After being stored in distilled water for 10 days, specimens were divided into Noncycled and Cycled Groups. The Noncycled Group specimens were fractured under a 3-point loading in a Bose Electroforce 3300 testing instrument at a crosshead speed of 0.75 mm/min. Cycled Groups specimens underwent a 6-12 Newton 3 Hertz cyclic load for 20,000 cycles in a Bose Electroforce 3300 testing instrument. Immediately following completion of the cycles, the specimens were fractured under a 3-point loading. Maximal loads to fracture in Newtons were recorded and mean flexural strengths were calculated (n = 20 per group). Comparisons were made with analysis of variance and Tukey's Multiple Comparison Test.</p>
<p><strong>Results<strong></p>
<p>Noncycled (NC) and Cycled (C) groups order of mean flexural strengths (MPa) from lowest to highest mean were as follows: Caulk (Noncycled - 53.83; C - 60.02), Vita VM CC (NC - 65.96; C - 66.83), Protemp 3 Garant (NC - 75.85; C - 77.18), and Radica (NC - 106.1; C - 115.96). In the Noncycled and Cycled groups, Radica was statistically superior when compared to all materials and Protemp 3 Garant was statistically superior to Caulk Temporary Bridge Resin. There was no statistically significant difference between the material's flexural strengths before and after cycles.</p>
<p><strong>Conclusion<strong></p>
<p>Within the limitations of this study, 20,000 cyclic loads of 6-12 Newtons at 3 Hertz did not have a significant effect on the flexural strength of interim fixed prosthetic materials. Radica demonstrated significantly superior flexural strength over other materials tested.</p>
Details
- Title: Subtitle
- Flexural strength of interim fixed prosthesis materials after simulated function
- Creators
- Jamie John Heying - University of Iowa
- Contributors
- David G. Gratton (Advisor)Ana M. Diaz-Arnold (Committee Member)Galen B. Schneider (Committee Member)Marcos A. Vargas (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Oral Science
- Date degree season
- Autumn 2009
- Publisher
- University of Iowa
- DOI
- 10.17077/etd.tzwo4kfr
- Number of pages
- xiii, 84 pages
- Copyright
- Copyright 2009 Jamie John Heying
- Language
- English
- Description bibliographic
- Includes bibliographical references (pages 81-84).
- Academic Unit
- Oral Pathology, Radiology and Medicine
- Record Identifier
- 9983776789402771
Metrics
2872 File views/ downloads
402 Record Views