THE EFFECT OF PRESTRETCHING ON FORCE DEGRADATION OF SYNTHETIC ELASTOMERIC CHAINS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

FATTAHI H.R.; POURSAYAH A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES) Year:2011 | Volume:12 | Issue:1 (30) Page(s): 26-33

Download Full-Text

Persian Verion

View:

584

Download:

Cites:

Information Journal Paper

Title

THE EFFECT OF PRESTRETCHING ON FORCE DEGRADATION OF SYNTHETIC ELASTOMERIC CHAINS

Author(s)

FATTAHI H.R. | POURSAYAH A. | Issue Writer Certificate

Keywords

SYNTHETIC ELASTOMERIC CHAINSQ1

PRESTRETCHINGQ1

STRETCHINGQ1

FORCE DEGRADATIONQ1

Abstract

Statement of Problems: The main disadvantage of elastic chains is their rapid force decay. Thus, pre-stretching has been recommended as a method to overcome this ever existing problem. However, the information regarding the magnitude and the method of its performance are still obscure or varied.Purpose: This study was designed to evaluate the effect of pre-stretching on FORCE DEGRADATION of the SYNTHETIC ELASTOMERIC CHAINS. Materials and Method: This experimental study had two categories of SYNTHETIC ELASTOMERIC CHAINS: 1. Control (unprestretched) 2. Test (prestretched). The test groups were pre-stretched to 33%, 100% and 200% of the original length. We evaluated 4 control and 16 test groups from four manufacturers. In a period of 5 seconds, each specimen was pre-stretched in the rate of 30 mm per minute. Then, all the specimens were stretched to 25 mm and fixed in this distance on the frames and were merged in 37 degree water. Their forces were measured at 0 hour, 1 hour, 24 hours, 1 week, and 3 weeks. Data were analyzed using Friedman, ANOVA and Green house-Geisser test.Results: All the 20 groups had FORCE DEGRADATION in the study period (p<001). The highest rate of FORCE DEGRADATION (about half of the total FORCE DEGRADATION) occurred at the first hour. But the rate of FORCE DEGRADATION declined over time. In all brands, FORCE DEGRADATION was smaller in pre-stretching 200% than the control group (p<0.01-0.001). Conclusion: SYNTHETIC ELASTOMERIC CHAINS from several companies have different effects from different distances of pre-strectching, so the appropriate pre-stretching length must be defined for each kind of synthetic elastomeric chain.

Cites

No record.

References

No record.

Cite

APA: Copy

FATTAHI, H.R., & POURSAYAH, A.. (2011). THE EFFECT OF PRESTRETCHING ON FORCE DEGRADATION OF SYNTHETIC ELASTOMERIC CHAINS. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), 12(1 (30)), 26-33. SID. https://sid.ir/paper/108345/en

Vancouver: Copy

FATTAHI H.R., POURSAYAH A.. THE EFFECT OF PRESTRETCHING ON FORCE DEGRADATION OF SYNTHETIC ELASTOMERIC CHAINS. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2011;12(1 (30)):26-33. Available from: https://sid.ir/paper/108345/en

IEEE: Copy

H.R. FATTAHI, and A. POURSAYAH, “THE EFFECT OF PRESTRETCHING ON FORCE DEGRADATION OF SYNTHETIC ELASTOMERIC CHAINS,” JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), vol. 12, no. 1 (30), pp. 26–33, 2011, [Online]. Available: https://sid.ir/paper/108345/en

Related Journal Papers