Journal of Conservative Dentistry
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Year : 2023  |  Volume : 26  |  Issue : 3  |  Page : 344-348

Flexural strength and microhardness of human radicular dentin sticks after conditioning with different endodontic chelating agents

1 Department of Biomaterials, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
2 Department of Endodontic, Faculty of Dentistry, Beni-Suef University, Beni Suef, Egypt
3 Department of Endodontics, RAK College of Dental Sciences, RAK Medical and Health Sciences University, Ras Al-Khaimah, United Arab Emirates; Department of Endodontics, Faculty of Dentistry, Assiut University, Assiut, Egypt

Correspondence Address:
Dr. Ahmed El-Banna
Organization of African Unity St, El-Qobba Bridge, El Weili, Cairo
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jcd.jcd_173_23

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Introduction: The objective of this in vitro study was to examine the impact of different endodontic chelating agents on the flexural strength and microhardness of root dentin. Materials and Methods: Fourty dentin sticks of (1 mm × 1 mm × 12 mm) were obtained from 10 single-rooted premolars and divided into four groups (n = 10). One stick from each tooth was assigned to one of the experimental groups and was soaked in one of the experimental chelating solutions for 5 min 17% ethylenediaminetetraacetic acid (EDTA), 2.5% phytic acid (PA), 18% etidronic acid, or saline (control group). Following the 5-min soak, the sticks' flexural strength was evaluated using a 3-point loading test using the universal testing machine, and the surface microhardness was tested using a Vickers's microhardness tester. Results: PA (2.5%) and etidronic acid (18%) showed no significant detrimental effect on either the flexural strength or the surface microhardness of radicular dentin compared to the control. EDTA (17%) exhibited a significant drop in the flexural strength and microhardness of radicular dentin compared to the other groups. Conclusions: PA and etidronic acid chelators do not compromise the surface and bulk mechanical properties of radicular dentin.

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