Water uptake and solubility of Acroseal sealer in comparison with Apexit and AH Plus sealers in Hank's solution

Abstract

Introduction. The function of root canal fillings is to seal the root canal system. The important physical property necessary for sealers to achieve this is low solubility. However, any therapeutic effect of calcium hydroxide-based sealers is dependent on the calcium hydroxide being in ionized form, which implies that the material must be at least partly soluble. Objective. The objective of our study was to compare weight changes of Acroseal and Apexit, conventional calcium hydroxide-based sealer and AH Plus, epoxy-amine resin sealer in Hank's solution at different exposure times. Methods. The standardized samples of each material were weighed and immersed in the Hank's solution for 1 h, 24 h, 96 h, 14 days and 28 days. After these exposure times, they were removed, dried, and weighed again. Mean weight changes were determined and the differences between sealers were analysed statistically using a one-way ANOVA. Results. The highest differences in mass were observed in Apexit, 1.52%, and were significantly different from Acroseal, 0.93% (p lt 0.05) and AH Plus, 0.45% (p lt 0.05). There were no significant differences between Acroseal and AH Plus, except for 96 h period. Conclusion. Under the conditions of our study, it may be concluded that the Acroseal sealer presented the behaviour more like epoxy-based material, AH Plus, than calcium hydroxide sealer, Apexit.

Uvod. Endodontski sileri se koriste za zaptivanje kanalnog sistema korena zuba. Važna fizička osobina neophodna da se to postigne jeste mala rastvorljivost. Međutim, terapijski efekat silera na bazi kalcijum-hidroksida zavisi od jonizovanosti ovog jedinjenja, što znači da materijal mora biti bar delimično rastvorljiv. Cilj rada. Cilj istraživanja bio je da se uporedi promena mase pasti Acroseal i Apexit, kao konvencionalnih silera na bazi kalcijum-hidroksida, i paste AH Plus, kao silera koji se sastoji od epoksiamin smole, u Henkovom rastvoru pri različitim vremenima izlaganja. Metode rada. Standardizovani uzorci svakog materijala mereni su i potapani u Henkov rastvor na jedan sat, 24 sata, 96 sati, 14 dana i 28 dana. Posle ovih vremenskih intervala uzorci su izvađeni iz rastvora, sušeni i ponovo mereni. Razlike između srednjih vrednosti promene mase silera statistički su analizirane primenom jednosmernog ANOVA testa. Rezultati. Najveća razlika u masi uočena je kod paste Apexit (1,52%), koja je bila statistički značajno veća nego kod pasti Acroseal (0,93%; p lt 0,05) i AH Plus (0,45%; p lt 0,05). Statistički značajne razlike između silera Acroseal i AH Plus nije bilo, izuzev za period od 96 sati. Zaključak. Naše istraživanje je pokazalo da se Acroseal ponaša sličnije sileru baziranom na epoksiamin smoli (AH Plus), nego pasti na bazi kalcijum-hidroksida (Apexit).