Influence of ultrasonic activation over final irrigants in the removal of photosensitizer from root canal walls after photodynamic therapy

Souza, Matheus Albino; Pazinatto, Bianca; Bischoff, Karolina Frick; Palhano, Huriel Scartazzini; Cecchin, Doglas; Figueiredo, José Antônio Poli de

doi:10.1016/j.pdpdt.2016.12.011

Cited by 22 publications

(7 citation statements)

References 33 publications

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“…Regarding the limitation of PDT, the photosensitizer may remain on the dentin structure and act as a diffuse chemical layer into dentinal tubules. 33 Therefore, in this study, inorganic precipitates formed after PDT might have contributed to dentin hardness.…”

Section: Discussionmentioning

confidence: 68%

The Effect of Photodynamic Therapy Applied with Different Photosensitizers on Dentin Hardness in Comparison with Conventional Irrigation

Küden

2022

Cumhuriyet Dental Journal

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Objective: The aim of this study was to examine the effect of photodynamic therapy (PDT) using toluidine blue O (TBO), curcumin (CUR) and methylene blue (MB) photosensitizers on root canal dentin microhardness by comparing it with sodium hypochlorite (NaOCl) + ethylenediamine tetraacetic acid (EDTA). Materials and methods: The root canals of 100 human premolar teeth were shaped by the R25 file (Reciproc; VDW, Munich, Germany). The working length of the teeth was determined by using a #10 K-file, keeping it 1mm shorter than the tooth apex. The R25 file was used to prepare the root canals. After every three pecking motions, irrigation was performed and a total of 10 mm of distilled water was used. The specimens were randomly distributed according to the disinfection method; NaOCl+EDTA, PDT with TBO, PDT with CUR, PDT with MB and distilled water (DS) (n=20). Grooves were prepared on the buccal and lingual surfaces of the prepared teeth, parallel to the long axis of the tooth, without touching the root canals. The roots were divided into two parts by means of a cement spatula placed in these grooves. Root canal dentin microhardness was evaluated by the Vickers test method. Three measurements were made by applying 300 g of force for 15 seconds and the average was calculated. It was recorded as the Vickers hardness value. The data were analyzed by using the one-way ANOVA and Dunnett’s post hoc tests (α=0.05). Results: All photosensitizer groups showed significantly higher microhardness value than the groups of DS and NaOCl + EDTA (p0.05). Conclusions: PDT with CUR obtained the highest radicular dentin microhardness.

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Section: Discussionmentioning

confidence: 68%

The Effect of Photodynamic Therapy Applied with Different Photosensitizers on Dentin Hardness in Comparison with Conventional Irrigation

Küden

2022

Cumhuriyet Dental Journal

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“…In the present study, the root canal disinfection was performed with PDT using different photosensitizers. Regarding the limitation of PDT, the photosensitizer may remain on the dentin structure and act as a diffuse chemical layer that can inhibit the adhesion of root‐filling materials by reducing the penetration of the dentinal tubules [23]. This study evaluated the effect of BR and AH sealers on bond strength after PDT using MB, CUR and TBO photosensitizers, and AH was included as the control group.…”

Section: Discussionmentioning

confidence: 99%

“…remain on the dentin structure and act as a diffuse chemical layer that can inhibit the adhesion of root-filling materials by reducing the penetration of the dentinal tubules [23]. This study evaluated the effect of BR and AH sealers on bond strength after PDT using MB, CUR and TBO photosensitizers, and AH was included as the control group.…”

Section: F I G U R Ementioning

confidence: 99%

Effect of three different photosensitizers in photodynamic therapy on bond strength of a calcium silicate‐based sealer to radicular dentin

Küden

Karakaş

2022

Aust Endodontic J

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To evaluate the effect of the photodynamic therapy (PDT) using with different photosensitizers on the bond strength of BioRoot RCS (BR) to radicular dentin by comparing with AH Plus (AH). The shaped root canals of 80 human mandibular premolars were divided into four groups based on the final disinfection protocol: NaOCl/EDTA, PDT with methylene Blue (MB), PDT with curcumin (CUR) and PDT with toluidine blue O (TBO) (n = 20). Each group was randomly divided into two subgroups (n = 10), according to the endodontic sealer used for obturation (n = 10). The test of push‐out bond strength (PBS) was performed using an universal test machine. The data were analysed using ANOVA, Tukey post‐hoc, and independent sample t‐test (α = 0.05). MB‐BR group showed the highest PBS at the cervical level (p < 0.05). The selection of the photosensitizer in PDT influenced adhesion of root canal sealers to radicular dentin.

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“…Thus, a final rinse would be required to eliminate the smear layer. 9,10 Evidence shows that the bond strength and sealer penetration are affected by the type of sealer, method of disinfection, and type of treatment of root canal walls. [11][12][13] Upon the activation of methylene blue (MB), free oxygen is released, which may affect the attachment, polymerization, and mechanical properties of the sealer adjacent to dentin and can directly decrease the success rate and durability of endodontic treatment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Photodynamic Therapy on the Pushout Bond Strength of Resin-Based and Calcium Silicate-Based Endodontic Sealers

Zadsirjan,

Asnaashari,

Yazdani

et al. 2023

J Lasers Med Sci

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Introduction: This study aimed to assess the effect of photodynamic therapy (PDT) on the pushout bond strength (PBS) of resin-based and calcium silicate-based endodontic sealers. Methods: Forty single-canal teeth were assigned to four groups. After root canal preparation by the crown-down technique and smear layer removal, groups 1 and 2 served as the control group, and groups 3 and 4 underwent PDT by using a low-level diode laser as the light source and methylene blue as the photosensitizer (MB). The root canals in groups 1 and 3 were filled with AH26 sealer while the root canals in groups 2 and 4 were filled with Endoseal TCS. The samples were sectioned at 4, 8, and 12 mm from the apex tip (1mm thick slices). The PBS test was performed, and the mode of failure was determined in the coronal, middle, and apical thirds. The data were analyzed by the Kruskal-Wallis, Friedman, and Dunn tests. Results: No significant difference was noted in the PBS of resin-based and calcium silicate-based sealers in the apical, middle, or coronal thirds in the application of PDT (P>0.05). The PBS of AH26 was significantly higher than that of Endoseal TCS (P<0.05). Cohesive failure was the dominant mode of failure in the AH26 groups, while mixed failure was the dominant failure mode in the Endoseal TCS groups. Conclusion: PDT had no significant effect on the PBS of resin-based and calcium silicate-based sealers.

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Influence of ultrasonic activation over final irrigants in the removal of photosensitizer from root canal walls after photodynamic therapy

Cited by 22 publications

References 33 publications

The Effect of Photodynamic Therapy Applied with Different Photosensitizers on Dentin Hardness in Comparison with Conventional Irrigation

The Effect of Photodynamic Therapy Applied with Different Photosensitizers on Dentin Hardness in Comparison with Conventional Irrigation

Effect of three different photosensitizers in photodynamic therapy on bond strength of a calcium silicate‐based sealer to radicular dentin

Effect of Photodynamic Therapy on the Pushout Bond Strength of Resin-Based and Calcium Silicate-Based Endodontic Sealers

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