The impact of maleic acid, carbohydrate-derived fulvic acid, and ethylenediaminetetraacetic acid on the flexural strength and modulus of elasticity of human radicular dentin: an in vitro study

Year 2025, Volume: 59 Issue: 3, 195 - 201, 08.10.2025

Loganathan Saatwika , Venkatachalam Prakash , Mitthra Suresh , Rajasekar Parthasarathy , Alagarsamy Venkatesh , Krishnamurthy Madhuram , Pachaiyappan Elangovan Mukundan

https://doi.org/10.26650/eor.20251471917

Abstract

Purpose: This study aimed to evaluate the impact of ethylenediamine tetra-acetic acid (EDTA), carbohydrate-derived fulvic acid (CHD-FA), and maleic acid (MA) on the flexural strength (FS) and modulus of elasticity (ME) of human radicular dentin.

Materials and Methods: Fifteen freshly extracted human mandibular premolars with single roots and single canals were selected. The teeth were decoronated 2 mm below the cementoenamel junction (CEJ), and the roots were sectioned into buccal and lingual halves. Each half was used to prepare two standardized plano-parallel dentin bars (7 mm in length × 1 mm in width × 1 mm in height). The samples were then divided into four groups and immersed in their respective irrigating solutions for 5 minutes: saline (control), maleic acid, CHD-FA, and EDTA. Subsequently, FS and ME were evaluated using a three-point bending test.

Results: Both EDTA and maleic acid reduced the FS and ME of radicular dentin. However, the study demonstrated that higher mean values for FS and ME were recorded in the CHD-FA and saline (control) groups compared to the EDTA and maleic acid groups.

Conclusion: CHD-FA is recommended as an endodontic irrigant, as it does not compromise the mechanical properties of radicular dentin, specifically FS and ME.

Keywords

Radicular dentin , flexural strength , modulus of elasticity , EDTA , CHD-FA , maleic acid

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