Comparative Evaluation of 17% Ethylenediaminetetraacetic acid and 9 % 1- Hydroxyethylidene-1, 1-Bisphosphonate on the Fracture Resistance of Endodontically Treated Teeth with Varying Dentin Thickness – an In-Vitro Study
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Abstract
Aims & Background: This study determine and compare the effects of 17% EDTA and 9% HEBP on the fracture resistance of endodontically treated teeth with different dentin thicknesses, focusing on how these chelating agents, which demineralize tooth tissues, impact structural integrity.
Materials and Methods: Thirty extracted premolars with single canal were selected. Decoronation was performed to maintain a root length of 13 mm. Working length was established, and canal preparation was carried out using ProTaper Universal files up to size F3 under copious irrigation. Using CBCT, specimens with remaining dentin thickness between 1.75 mm and 2.00 mm were chosen. The specimens were divided into three groups: Group A- 17% EDTA and Group B-9% HEBP. The prepared canals were irrigated with assigned chelating agent (9 ml, 3 minutes) and obturated using AH Plus sealer, and GuttaPercha. The specimens were then placed in acrylic blocks coated with polyvinyl siloxane, exposing 4 mm of root. Fracture resistance was assessed using a universal testing machine. The results were tabulated and statistically analyzed using one-way ANOVA.
Results: The mean fracture resistance was greatest in Group B (956.000 ± 206.596 N), with Group A following (802.267 ± 161.179 N).
Conclusion: The 9% HEBP had higher mean fracture resistance, pointing to its potential as a more effective chelating agent than 17% EDTA and normal saline.
Clinical significance: Etidronic acid, Fracture resistance, EDTA
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References
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