Comparison of Apical Microleakage of Dual-Curing Resin Cements with Fluid-Filtration and Dye Extraction Techniques

Abstract

BackgroundEndodontically treated teeth with excessive loss of tooth structure are frequently restored using fiber posts. In this in vitro study, the apical leakage of self- and dual-activated curing modes for dual-curing resins cementing a translucent fiber post was evaluated using computerized fluid filtration meter and dye extraction method.Material/MethodsOne hundred and four extracted human maxillary incisors with single root and canal were used. Experimental samples embedded in a closed system were divided into 4 groups (n=20) according to 2 dual-curing luting systems, with 2 different curing modes (either with self- or light-activation): (1) Panavia F 2.0 with self-cure, (2) Panavia F 2.0 with light-activation, (3) Clearfill SA with self-cure, and (4) Clearfill SA with light activation. Twenty-four teeth served as negative and positive controls. Translucent fiber posts were luted in the roots except in the control groups.ResultsStatistical analysis indicated no significant difference in leakage among groups (p>0.05) with 4.12×10−4 (Panavia self-cure), 4.55×10−4 (Clearfill SA self-cure), 5.17×10−4 (Panavia dual-cure), and 5.59×10−4 (Clearfill SA dual-cure) in fluid-filtration method. Absorbance values for dye-extraction method were 266 nanometer (nm) (Panavia self-cure), 268 nm (Clearfill SA self-cure), 270 nm (Panavia dual-cure), and 271 nm (Clearfill SA dual-cure), in which difference among the groups were not statistically significant (p>0.05). When comparing the leakage, assessment methods results showed no statistically significant difference between the tested evaluation techniques (p>0.05).ConclusionsLight- and self-activation curing modes of Panavia F 2.0 and Clearfill SA perform similar to each other in a closed system.

<p>Egyptian Propolis-Loaded Nanoparticles as a Root Canal Nanosealer: Sealing Ability and in vivo Biocompatibility</p>

“…For more representative and quantitative measurement of microleakage, dye-penetration, dye-extraction, and fluid-infiltration techniques have been used. 42 Due to the smaller size of dye molecules than the size of bacteria, the dye-penetration technique is not able to assess the exact volume of dye absorbed by a sample tooth. Instead, the dye-penetration technique merely measures the deepest point reached by the dye.…”

“…Complete dissolution of teeth guarantees release and extraction of all dye including that penetrating unsealed irregularities, the deepest and smallest dentinal tubules. 30 , 33 , 41 , 42 The dye-extraction method is found to be a reliable, simple, widely used passive technique for volumetric determination of sealing ability. 42 , 43 The capillarity principle is of great significance in the dye-extraction method for assessing apical leakage.…”

“… 30 , 33 , 41 , 42 The dye-extraction method is found to be a reliable, simple, widely used passive technique for volumetric determination of sealing ability. 42 , 43 The capillarity principle is of great significance in the dye-extraction method for assessing apical leakage. Hence, the dye-extraction method was selected to be used in the present study.…”

“…44 As a tooth is immersed in MB aqueous solution, dye molecules can freely penetrate through the smallest dentinal tubules to fill all spaces between the dentinal walls and root canal sealer. 30 , 42 …”

“…44 As a tooth is immersed in MB aqueous solution, dye molecules can freely penetrate through the smallest dentinal tubules to fill all spaces between the dentinal walls and root canal sealer. 30,42 Figure 1 shows the absorbance values of the dye extracted from the control and treated groups. It was understandable that Control Group exhibited the lowest value of sealing ability (absorbance of 0.6703 ± 0.18 at 550 nm) due to the lack of sealer application.…”