Influence of ultrasonic activation and mixing vehicle on dentinal pH in simulated external root resorptions repaired with MTA

Marina Angélica MARCIANO, Fábio Antonio PIOLA-RIZZANTE, Bruno Martini GUIMARÃES, Bruno Cavalini CAVENAGO, Josette CAMILLERI e Marco Antonio Hungaro DUARTE

The aim of this study was to evaluate the effect of ultrasonic activation and MTA vehicle on dentinal pH in simulated external root resorptions. So, a cavity was prepared in the root of forty-six bovine teeth. They were filled with MTA mixed with 100% distilled water (DW) or MTA mixed with 80% DW and 20% propylene glycol (PG). Teeth were divided into four groups (n = 10), according to the vehicle (DW or PG) and ultrasonic protocol used for material insertion (activated or not). Control group (n = 6) was unfilled. The pH was assessed after 15, 30 and 60 days of immersion. As results of all that, activation with ultrasound did not significantly alter the pH (p > 0.05). The cements were mixed with either DW or DW + PG, with the later association presenting higher pH at 15 days of assessment than the former (p < 0.05). Thereby, it can be concluded that mixing MTA with 80% DW and 20% PG increased the dentinal pH, which is positive for root resorption repair.

Keywords: Dentin. Endodontics. Biocompatible Materials.

How to cite: Marciano MA, Piola-Rizzante FA, Guimarães BM, Cavenago BC, Camilleri J, Duarte MAH. Influence of ultrasonic activation and mixing vehicle on dentinal pH in simulated external root resorptions repaired with MTA. Dental Press Endod. 2020 Jan-Apr;10(1):43-8.

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