Comparative evaluation of compressive strengths of zirconomer, amalgam and composite – an invitro study

Author: 
Dr. Leneena Gudugunta,Dr. Bhavana Vankayala, Dr. Cheah Kah Kei, Dr. Cheong Ai Jing, Dr. Cher Chia Yee and Dr. Sathiyavathi Mahendra Kumar

The purpose of this research is to evaluate the Zirconomer’s compressive strength and hardness as currently there is little research on it.15 specimens were fabricated for each group, in a total of 45 specimens. The materials were manipulated according to the powder/liquid ratio recommended by the manufacturer for the Zirconomer, and appropriate light-curing time recommended by the manufacturer for composite and recommended trituration time for amalgam. The materials were slowly inserted through metallic moulds openings and another mylar strip was placed on the upper surface followed by a 2-mm- thick glass slab manually pressured to obtain a regular material surface and then they are subjected to universal testing machine. According to the results obtained in the study, amalgam has the highest and composite has a higher compressive strength compared to Zirconomer. However, all the materials achieving mean compressive strength of more than 300MPa, hence all these materials are suitable in stress-bearing regions for posterior tooth restorations.

Download PDF: 
DOI: 
http://dx.doi.org/10.24327/ijcar.2020.21230.4166
Select Volume: 
Volume9