Turk Endod J. Ahead of Print: TEJ-96158 | DOI: 10.14744/TEJ.2023.96158

The effect of storage time on dislocation resistance of core material to root canal sealer in standardized root canals: A laboratory study

Tuba Gök¹, Güzide Çankaya¹, Bilge Hakan Şen^2
1Department of Endodontics, Fırat University Faculty of Dentistry, Elazığ, Türkiye
²Private Practice, İzmir, Türkiye

Purpose: To evaluate the effect of the storage time on dislocation resistance of core material to root canal sealer in standardized artificial root canals.
Methods: A single root canal with a round shape was selected by cone-beam computed tomography imaging and root canal treatment was performed. The root was scanned with micro-computed tomography and the data were exported as a stereolithography file. Forty artificial roots were manufactured with 3D printing technology. The artificial root canals were obturated using a single cone technique. The roots were divided into two groups according to the storage time of filled roots as 7- and 30-days (n=20) and stored at 37°C and 100% humidity. After each storage period, 2-mm sections were taken from the middle part of the roots. The sections were tested at a universal testing machine. The dislocation resistances (MPa) were calculated, and the data were analyzed using the Shapiro–Wilk test and independent samples t-test (α =.05).
Results: The dislocation resistance of filling material was significantly higher in the 30-day storage time group compared to the 7-day group (p <.05).
Conclusion: The storage time of the root fillings affected the dislocation resistance in the standardized experimental setup with artificial roots.

Keywords: Artificial root canal, dislocation resistance, micro-computed tomography, push-out test, storage time.

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