Survival analysis of an orthodontic bracket bond subjected to cyclic tensile and shear forces

Journal of Orthodontic Science
Ameerah Y Mansour, Mohamed Bamashmous

Abstract

The objective of this study was to evaluate the use of survival analysis in cyclic fatigue testing in orthodontic bracket bonding. We used 100 extracted bovine lower incisors (50 orthodontic brackets and 50 eyelet brackets). Each set of brackets was further divided by etching technique (25 total-etch and 25 self-etch). Cyclic fatigue testing was performed at a crosshead speed of 2 mm/min using an up-and-down method. Kaplan-Meier survival data analyses and Cox regression analyses were performed. Survival analysis proved to be a simple methodology and revealed that the etching technique was not a statistically significant predictor for survival of orthodontic bracket bonding with either tensile or shear cyclic forces at P > 0.05. In tensile cyclic loading, high mechanical loading after controlling for the etching technique is a statistically significant predictor for lower survival of the orthodontic bracket bond at P < 0.001. Both etching techniques (total-etch and self-etch) are equally efficient in bonding orthodontic brackets. High mechanical loading is an important predictor of bond failure when applying tensile cyclic forces. Finally, survival analysis is a simpler alternative method to analyze orthodontic bracket bonding s...Continue Reading

References

Mar 1, 1979·Journal of Dental Research·R A Draughn
Sep 1, 1985·The American Journal of Sports Medicine·G P LiA M Wang
Mar 1, 1995·Journal of Biomedical Materials Research·N D RuseD Feduik
Apr 4, 1998·European Journal of Oral Sciences·H R DewjiI Punwani
Mar 18, 2000·European Journal of Orthodontics·T Eliades, W A Brantley
May 7, 2011·The Angle Orthodontist·Ameerah Yousef MansourZuhair Bakhsh
May 20, 2011·Australian Dental Journal·M V CardosoB Van Meerbeek
Aug 25, 2012·The Journal of Contemporary Dental Practice·Lalita G Nanjannawar, Girish S Nanjannawar
May 3, 2014·Journal of Clinical and Experimental Dentistry·Mostafa ShahabiHorieh Moosavi
Sep 2, 2016·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Andreas HellakHeike Maria Korbmacher-Steiner

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Citations

Apr 3, 2020·Journal of Applied Biomaterials & Functional Materials·Khalid M AbdelazizAbdullah Alnazeh

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Software Mentioned

Statistical Package for the Social Sciences ( SPSS )

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