Radicular canal disinfection by photosensitizers activated by photodynamic therapy and Er, Cr: YSGG laser bonded to glass fiber post using different cement types. An Invitro study.

Autor: Qamar Z; Department of OMFS and Diagnostic Sciences, Faculty of Dentistry, Riyadh Elm University, Riyadh, Saudi Arabia; Department of Oral Biology, Liaquat College of Medicine and Dentistry, Karachi. Electronic address: zeeshan.qamar@ymail.com., Niazi FH; Department of Restorative and Prosthetic Dentistry, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia. Electronic address: fayez.h@dau.edu.sa., Alshalan AM; College of Dentistry, Vision colleges (Al Farabi Colleges), Riyadh, Saudi Arabia., Almutairi WT; College of Dentistry, Vision colleges (Al Farabi Colleges), Riyadh, Saudi Arabia., Lingam AS; Department of Surgical and Diagnostics Sciences, Dar Al Uloom Univesity, Riyadh 13314, Saudi Arabia. Electronic address: lingam@dau.edu.sa.
Jazyk: angličtina
Zdroj: Photodiagnosis and photodynamic therapy [Photodiagnosis Photodyn Ther] 2022 Mar; Vol. 37, pp. 102730. Date of Electronic Publication: 2022 Jan 20.
DOI: 10.1016/j.pdpdt.2022.102730
Abstrakt: Aim: To assess the tensile bond strength (TBS) of conventional glass ionomer cement (GIC) and resin cemented fiber post to radicular dentin when disinfected with different photosensitizers methylene blue photosensitizer (MBP), curcumin photosensitizer (CP), and laser therapy Er, Cr: YSGG laser (ECYL) MATERIAL AND METHODS: Sixty carefully extracted, non-traumatic, non-carious, closed apex human mandibular premolars were collected. Periodontal fibers, plaque, or calculi were detached. Decoration of samples was executed up till the cementoenamel junction. Samples were embedded perpendicularly in a heat cure acrylic resin. Canals of all specimens were shaped and cleaned with Protaper universal NiTi system dehydrated with paper points and obturated with gutta-percha. Post space was prepared after the removal of gutta-percha via peso reamers. Post space was disinfected with MBPv100mg/L in group 1; group 2 500 mg/L and group 3 ECL. After sequential photo-irradiation therapies, fiber post was luted with resinous cement and GIC (n = 10 each). After post-cementation, all specimens were subjected to tensile strength in the universal testing machine in Newton. Failure analysis was assessed at 30x magnification.TBS determination was statistically analyzed by one-way variance analysis (ANOVA), followed by the Tukey test (p= 0.05) by parallelizing different groups.
Results: Fiber post cemented to radicular dentin with Rely X ARC resin cement and radicular canal disinfected with CP offered the highest TBS (289.25±3.27 N). Similarly, canal space disinfected with MBP and post-luted via Rely X ARC showed the lowest TBS (281.54±4.46 N). Intragroup comparison unveiled that there is no statistical difference between tensile strength sustained by two luting cement (p>0.05).
Conclusion: Rely X ARC resinous cement bared the highest tensile bond strength for a post-dentine-cement bond with different photo-activated canal disinfectants (Methylene blue photosensitizer, Curcumin photosensitizer) and Er, Cr: YSGG then Vidrion C (GIC).
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
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