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:: Volume 21, Issue 2 (Foll Text in Persian 2009) ::
J Iran Dent Assoc 2009, 21(2): 103-106 Back to browse issues page
ِEvaluation of compressive strength in conventional and pack able
Abstract:   (20772 Views)

 ِEvaluation of compressive strength in conventional and pack able composite materials

 

 

 Dr. Ghasemi A .,1 Dr. Torabzadeh H .,1 Dr. Moayedi S.2

  1 Associate Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran. 2 Specialist in Operative Dentistry.

  

  (Received 6 Nov, 2008 Accepted 26 April, 2009)

  

  Abstract

  Background and Aim : The mechanical properties of composite resin have significant effect on performance and success of a restorative procedure. The aim of present investigation was to evaluate the compressive strength of conventional and pack able composite materials.

  Materials and Methods : A stainless steel mold of 4 mm in diameter by 6 mm in height was used to fabricate 50 study specimens. The cylindrical specimens were divided in five groups (n=10). The materials used in this study were Alert, Charmfil Plus, P60, Z100 and Spectrum. Following photo polymerization by using Radi Plus light curing unit (SDI Limited), the specimens were stored in distilled water at 37 C for 48 hours. The specimens were subjected to compressive stress using mechanical testing machine (Zwick/Roell) at cross head speed of 0.5 mm/min. One-Way ANOVA and Tukey's Post-hoc tests were employed to determine group differences and the significance level if any of the restorative materials could show significant difference among others.

  Results : There were significant statistical differences between groups (P < 0.05). Z 100 showed the highest and Charmfil Plus demonstrated the lowest amount of compressive strength. There was no significant statistical difference between Z 100 and P 60, but, differences were significant between Z 100 and other materials.

  Conclusion : Based on the findings of this investigation, the compressive strength of packable composites was not proving better than conventional composites.

  Key words : Pack able composite - conventional composite - Compressive strength .

 

 

  Corresponding Author : Dr. Torabzadeh H ., Associate Professor, Department of Operative Dentistry, School of Dentistry, Shahid Beheshti University / MC. Tehran, Iran.

  e.mail: htorabzadeh@ icdr.ac.ir

 

 

Keywords: Pack able composite - conventional composite - Compressive strength.
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ِEvaluation of compressive strength in conventional and pack able . J Iran Dent Assoc 2009; 21 (2) :103-106
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 21, Issue 2 (Foll Text in Persian 2009) Back to browse issues page
Journal of Iranian Dental Association

AWT IMAGE

This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly

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