Comparative Evaluation Of Commercially Available Stainless Steel Crowns: An In- Vitro Study
Abstract
Purpose : The purpuse of this study was to evaluate the tensile strength, compressive strength,adaptability,retention,resistance and dimensions of different commercially available stainless steel crown ( SSC ) and a new crown ( rainbow ) coming in the market.
Materials & method : Sixty extracted primary molars were used.Crown preparation was done.They were divided into four groups of 15 samples each. Each group was assigned a commercially available crown and group II was assigned the new rainbow crown. They were all subjected to universal mechanical testing machine.
Results : Group I has maximum value for tensile and compressive strength. The post hoc tukey analysis confirmed that there was no statistical difference between other variables for all the groups.
Conclusion : All the four brands of SSC had similar fracture resistance. Further study with big sample size is needed to evaluate their performance under cyclical and multiaxial force loads.
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