Title

pH influences the volumetric change of calcium silicate‐ and epoxy resin‐based root canal sealers: An ex vivo micro‐CT study.

Authors

Ferreira, Cláudio Malizia Alves; de Lima, Carolina Oliveira; Pinto, Karem Paula; Barbosa, Ana Flávia Almeida; Fidalgo, Gabriel; Sena, Gabriela; Colaço, Marcos Vinicius; Barroso, Regina Cely; Sassone, Luciana Moura; Silva, Emmanuel João Nogueira Leal

Abstract

This study assessed the influence of pH variation on the volumetric change of EndoSequence BC Sealer compared to AH Plus Jet. Eighteen single‐rooted teeth were uniformly prepared and filled with one of the sealers. After 24‐h storing, samples were scanned in a micro‐CT device. Then, roots were immersed in 20 ml phosphate‐buffered saline (PBS) with pH of 5, 7 or 12 at 37°C for 7 and 30 days and rescanned. Statistical analysis was performed using Shapiro–Wilk's test, one‐way ANOVA and Tukey's or Student's t‐tests (p < 0.05). Differences between sealers were observed only at neutral pH and after 30 days of acidic pH exposure, with a higher loss of EndoSequence (p < 0.05). After 7 days, alkaline pH reduced and increased the volumetric loss of EndoSequence and AH Plus, respectively, compared to neutral pH (p < 0.05). It can be concluded that the pH directly influenced the volumetric change of both tested root canal sealers in different ways.

Subjects

PIT & fissure sealants (Dentistry); X-ray computed microtomography; SILICATE cements (Dentistry); EPOXY resins; CALCIUM; ONE-way analysis of variance; TOOTH replantation

Publication

Australian Endodontic Journal, 2023, Vol 49, p194

ISSN

1329-1947

Publication type

Academic Journal

DOI

10.1111/aej.12716