# Experimental and Finite Element Analysis of Compressive Strength and Diametral Tensile Strength of Luting Cement: An In Vitro Study

## TL;DR

This study compares the strength of three dental luting cements using experiments and simulations, finding resin cement to be the strongest.

## Contribution

The study provides empirical and finite element analysis of luting cement strength, comparing three types under standardized conditions.

## Key findings

- Resin cement showed significantly higher compressive and tensile strengths compared to other cements.
- Conventional glass ionomer cement had the lowest strength values.
- Finite element analysis results matched experimental findings closely.

## Abstract

Background

Strength parameters greatly influence the selection of luting agents. This study compared the compressive and diametral tensile strengths (DTS) of three luting cements.

Materials and methods

Three luting cements, conventional glass ionomer (CGI), resin-modified glass ionomer (RMGI), and resin cement (RC), were tested for compressive strength and DTS. Forty-two standardized specimens were prepared, measuring 4 mm by 6 mm for compressive tests and 6 mm by 3 mm for diametral tensile tests. The luting materials were prepared according to the manufacturers' instructions.

Result

Experimental mean compressive and diametral strengths and standard errors were calculated for each luting agent (n = 10). Analysis of variance was computed (p < 0.05), and multiple comparison tests were performed. RC showed significantly higher compressive strengths and DTS among the three tested luting cements, while the CGI showed the least. The results obtained by finite element analysis (FEA) for both tests closely matched the experimental results.

Conclusion

In this study, it was concluded that the mean compressive strength and DTS values of all three luting cements were significantly different. The resin luting cement exhibited the highest compressive strength and DTS, while the CGI exhibited the least.