A comparative evaluation of the sealing ability of two calcium silicate based sealers and a resin epoxy-based sealer through scanning electron microscopy and bond strength

Abstract

Aim: this study aimed to compare the sealing ability of two types of commercially available calcium silicate bioceramic based root canal sealers and a resin based root canal sealer. Methods: Twenty one single-rooted teeth were used, samples (n= 21) were randomly divided into three groups according to the sealer used (group A; ADSEAL, group B; Wellroot, group C; Ceraseal). Roots were then cleaved longitudinally in the labiolingual direction; all samples were then sectioned at three, six, and nine mm from the root tip. The penetration of sealers into the dentinal tubules was examined at 1000x with a scanning electron microscope. Data were tested for normality using Shapiro Wilk test. ANOVA test was used for analyzing normally distributed data followed by Bonferroni post hoc test for pair-wise comparison. Significance level p≤0.001. Results: groups B and C showed better sealing ability than group A in all the three sections. The coronal section showed higher sealing ability than the middle section followed by the apical section in the three tested groups. Conclusion: it can be concluded that both calcium silicate-based sealers had better sealing ability and higher bond strength than the resin epoxy- based sealer.

Assessment of Coronal Microleakage Following Root Canal Obturation With Calcium Silicate Sealers

“…Also, other studies came up with the same conclusion while investigating the premixed TotallFill, relating their results to the small size particle, followability and expansion of the premixed bioceramic sealer allowing it to penetrate into the dentinal tubules while AH Plus sealer is mild acidic pH which could etch dentin slightly, thereby improving sealer dentin adaptation (Salem et al, 2019). Similarly, Abdelrahman et al rendered the non-significant outcome to the alkaline nature of the calcium silicate-based sealers properties, low film thickness, dimensional stability and denaturation of the dentin collagen which could collectively facilitate the sealer penetration and adaptation to root canal dentin (Abdelrahman & Hassan, 2021). Moreover, another study found no significant difference between iRoot SP pre-mixed sealer (Henry Schein, Hong Kong) and AH Plus as iRoot SP generates interlocking with dentinal tubules lead to strength and more resistance to microleakage while AH Plus had high flowability (Wang et al,2018).…”

Cone-beam computed tomography diagnosis and nonsurgical endodontic management of a taurodontic mandibular first premolar with two roots and four canals: A rare case report

“…Furthermore, a bioceramic-based root canal sealer was used in the current case due to its excellent bioactivity, biocompatibility, and sealing capacity in the root canals, as a hermetic seal is warranted for an excellent long-term prognosis of endodontically treated teeth. [ 19 ]…”

Dentin Bond Strength of Calcium Silicate-Based Materials: A Systematic Review of In Vitro Studies

“…CSC sealers including Ceraseal, EndoSequence BC, EndoSeal MTA, and BioRoot RCS, exhibited higher bond strengths compared to resin-based sealers like ADSEAL and RealSeal [11,22]. This difference is likely attributed to intrafibrillar apatite deposition.…”

“…On the other hand, nine articles utilized SEM, offering a valuable means of assessing the sealing capacity and adhesion of the sealer to the walls of the root dentin. SEM provides high magnification, enabling a detailed observation of surface morphology [11]. Furthermore, CLSM made an appearance in a single article.…”

“…Moreover, the moisture environment within the tooth plays a crucial role in the adhesion between CSC and root canal dentin. These sealers also demonstrate potential bioactive properties, forming calcium hydroxide and hydroxyapatite upon contact with water [11].…”