Time-Dependent Effect of Chitosan Nanoparticles as Final Irrigation on the Apical Sealing Ability and Push-Out Bond Strength of Root Canal Obturation.

Autor: Ratih DN; Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia., Sari NI; Specialist Study Program of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia., Santosa P; Department of Conservative Dentistry, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia., Kaswati NMN; Nanotech Indonesia, Serpong, Tangerang Selatan, Banten 15314, Indonesia.
Jazyk: angličtina
Zdroj: International journal of dentistry [Int J Dent] 2020 Jul 15; Vol. 2020, pp. 8887593. Date of Electronic Publication: 2020 Jul 15 (Print Publication: 2020).
DOI: 10.1155/2020/8887593
Abstrakt: Materials and Methods: Fifty-six premolars were used in this study and divided by two evaluations: 28 teeth for apical sealing ability and 28 others for bond strength. Each study was assigned randomly into two groups of fourteen teeth: Group-1, final irrigation with 17% EDTA; Group-2, with 0.5% chitosan nanoparticles. Each group was further divided into two groups of 7 each: Group-A, final irrigation was applied for 1 minute; Group-B, for 3 minutes. All teeth were obturated with epoxy resin-based sealer and gutta-percha. In the apical sealing ability study, the obturated teeth were immersed in 2% methylene blue and observed under a stereomicroscope (8x magnification). In the bond strength study, the teeth were tested using the push-out technique and observed under a stereomicroscope (40x magnification) to determine the failure type. Data from each evaluation were analysed with two-way ANOVA followed by the LSD test.
Results: Final irrigation using 0.5% chitosan nanoparticles produced the same apical sealing ability and bond strength as 17% EDTA ( p > 0.05). A significant difference occurred between application times ( p < 0.05). The failure type was observed predominantly as cohesive, and the least was adhesive.
Conclusion: Regardless of the final irrigation solution used, 3-minute application time produced greater apical sealing ability and push-out bond strength than 1-minute application time.
Competing Interests: The authors declare that they have no conflicts of interest.
(Copyright © 2020 Diatri Nari Ratih et al.)
Databáze: MEDLINE
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