Chemical treatment of the intra-canal dentin surface: A new approach to modify dentin hydrophobicity

Objective: This study evaluated the hydrophobicity of dentin surfaces that were modified through chemical silanization with octadecyltrichlorosilane (OTS). Material and Methods: An in vitro experimental study was performed using 40 human permanent incisors that were divided into the following two groups: non-silanized and silanized. The specimens were pretreated and chemically modified with OTS. After the chemical modification, the dentin hydrophobicity was examined using a water contact angle measurement (WCA). The effectiveness of the modification of hydrophobicity was verified by the fluid permeability test (FPT). Results and Conclusions: Statistically significant differences were found in the values of WCA and FPT between the two groups. After silanization, the hydrophobic intra- radicular dentin surface exhibited in vitro properties that limit fluid penetration into the sealed root canal. This chemical treatment is a new approach for improving the sealing of the root canal system.

Dentin; Octadecyltrichlorosilane; Surface properties octadecyltrichlorosilane; silane derivative; article; chemical phenomena; chemistry; dental surgery; dentin; drug effect; endodontics; human; methodology; reproducibility; scanning electron microscopy; surface property; time; tooth disease; tooth permeability; tooth pulp; tooth root; Dental Leakage; Dental Pulp Cavity; Dentin; Dentin Permeability; Humans; Hydrophobic and Hydrophilic Interactions; Microscopy, Electron, Scanning; Reproducibility of Results; Root Canal Therapy; Silanes; Smear Layer; Surface Properties; Time Factors; Tooth Root

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