The Mechanical Footprint of Dual Rinse 1-Hydroxyethane 1,1-Diphosphonate on Fast-Set Mineral Trioxide Aggregate...

Area of Science:

• Endodontics
• Dental Materials Science
• Biomaterials

Background:

• Hydraulic calcium silicate-based cements are widely used in endodontic procedures.
• Understanding the effect of irrigation protocols on cement properties is crucial for clinical success.
• RetroMTA is a fast-set hydraulic calcium silicate-based cement used for root canal filling.

Purpose of the Study:

• To evaluate the impact of various root canal irrigation protocols on the surface microhardness and push-out bond strength of RetroMTA.
• To assess these effects at two different hydration stages (1 and 14 days).

Main Methods:

• Standardized root slices were filled with RetroMTA and subjected to different irrigation protocols (NaOCl, NaOCl with HEDP, NaOCl followed by EDTA, saline control).
• Push-out bond strength and Vickers surface microhardness were measured after 1 and 14 days.
• Data were analyzed using one-way and three-way ANOVA.

Main Results:

• No significant differences in push-out bond strength or surface microhardness were observed between any irrigation groups and the control.
• Irrigation protocols, NaOCl concentration, chelator type, and hydration time did not significantly affect RetroMTA's properties.
• No significant two-way or three-way interaction effects were found.

Conclusions:

• Various irrigation protocols, including those with sodium hypochlorite and EDTA, do not significantly alter the surface microhardness or push-out bond strength of RetroMTA.
• The findings suggest that common irrigation solutions are compatible with RetroMTA regarding these specific properties.
• Further research may explore other mechanical or biological properties under different experimental conditions.