Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin

Strazzi-Sahyon, Henrico Badaoui; Silva, Paloma Pereira da; Oliveira, Murilo Silva de; Cintra, Luciano Tavares Ângelo; Dezan, Elói; Gomes‐Filho, João Eduardo; Jacinto, Rogério de Castilho; Santos, Paulo Henrique dos; Sivieri-Araújo, Gustavo

doi:10.1016/j.pdpdt.2019.01.025

Cited by 52 publications

(13 citation statements)

References 37 publications

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“…In the present study, bovine teeth were used to perform the tests because of the easy acquisition of teeth with no caries, restorations, or other flaws, 18 19 20 and the possibility of age standardization. 21 Bovine teeth aging from 24 to 48 months were used, considering that older bovine teeth are more similar to human teeth.…”

Section: Discussionmentioning

confidence: 99%

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Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine

et al. 2019

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Objective The purpose of this study was to evaluate the effect of the intracoronary bleaching and calcium hydroxide (Ca(OH)2) dressing use, on the bond strength (BS) of fiberglass posts to root dentine. Materials and Methods After root canal filling of 40 bovine incisors, a 2-mm thick cervical plug was fabricated 2 mm below the cementum–enamel junction. Seven days later, teeth were randomly distributed into four groups (n = 10), as follows: G1 no bleaching, followed by immediate post cementation; G2 bleaching and immediate post cementation; G3 bleaching, dressing with Ca(OH)2 for 7 days, and post cementation; and G4 bleaching, no dressing, and post cementation after 7 days. The roots were transversally cut into 1-mm thick slices to perform the push-out test (0.5 mm/min). Failure modes were assessed under scanning electron microscopy. Statistical Analysis The analysis of variance (two-way ANOVA) was performed, followed by the supplementary Tukey multiple comparison test (a = 5%). Results No significant difference for BS was observed among groups. Considering the different root thirds, G1 had higher BS values for the cervical third in comparison with the apical one (p < 0.05). The most frequent failure modes were adhesive between cement/dentine (G1); cohesive at the post (G2 and G3), and mixed (G4). Conclusions The BS of the fiberglass posts to root dentine was not affected by the intracoronary bleaching and the use of Ca(OH)2 dressing.

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Section: Discussionmentioning

confidence: 99%

“…In addition to the bleaching agents, other substances, such as photosensitizers (curcumin and methylene blue), may influence the mechanical properties of intraradicular dentin and the bond strength of glass-fiber posts. 19 20…”

Section: Discussionmentioning

confidence: 99%

Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine

et al. 2019

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“…[7][8][9] However work by Sayhon et al, advocates that CP has an unfavorable effect on mechanical properties of dentin and it does not improve bond values of fiber post. 10 Similarly, Strazzi Sayhon in his sequel study asserted that MBP for canal disinfection descends the bond value of fiber post to dentin. 11 PDT works on the principle of absorption of a photon from a low-intensity visible light source resulting in reactive oxygen species (ROS) instigating lysis of bacterial cell wall through the process of oxidation.…”

Section: Introductionmentioning

confidence: 98%

Influence of synthetic and natural photosensitizers activated by photodynamic therapy on extrusion bond strength of fiber post to radicular dentin

Almadi

Alkahtany²,

Almutairi³

2021

Pak J Med Sci

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Objective: To assess the effect of different photosensitizers activated by low-level laser therapy on EBS of glass fiber post to radicular dentin. Methods: This study was conducted at King Saud University from January 2021 to March 202. Fifty maxillary central incisors were sanitized and decoronated. NiTi was used for mechanical instrumentation of the canal. All canals were shaped, cleaned and obturated with gutta-percha. Post space was made using peso reamers. Four Division of groups were made according to photosensitizers used (n=10). Group-1: MBP at 100mg/l, Group-2: Phycocyanin at 100mg/l, Group-3: CP at 500mg/l, and Group-4 toluidine blue photosensitizer (TB). Lasers were used for activation of photosensitizers. In Group-5 samples were irrigated using sodium hypochlorite NaOCl +17% EDTA. Posts were cemented and teeth sectioned into apical, coronal and middle. For EBS all samples were subjected to a universal testing machine. Fracture patterns were analyzed using stereomicroscope. To compare EBS at different segments One-way analysis of variance (ANOVA) and Tukey multiple comparison tests (p=0.05) was performed. Results: The maximum value of EBS was shown in Group-2 radicular canal treated with CP with 17% EDTA at all three levels cervical (8.61±1.32 MPa), middle (6.81±0.73 MPa), and apical (5.51±0.25 MPa). Similarly, the minimum value of EBS was displayed in Group-5 canal irrigated with 2.25% NaOCl +17% EDTA (control) coronal (6.10±1.77 MPa), middle (5.11±0.75 MPa), and apical (3.60±0.94 MPa). Intragroup assessment disclosed a decrease in EBS from cervical one-third to apical one-third in all groups Conclusion: P, CP, and TB along with EDTA have the potential to be used as canal disinfectant and favors the bonding of GFP to radicular dentin using self-etch adhesive resin. doi: https://doi.org/10.12669/pjms.37.7.4331 How to cite this:Almadi KH, Alkahtany MF, Almutairi B. Influence of synthetic and natural photosensitizers activated by photodynamic therapy on extrusion bond strength of fiber post to radicular dentin. Pak J Med Sci. 2021;37(7):---------. doi: https://doi.org/10.12669/pjms.37.7.4331 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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“…Photosensitization is a novel environmentally friendly treatment to inactivate microorganisms via cytotoxic reactive oxygen species (ROS) produced by the photoactive compound (photosensitizer) after visible light illumination (Jiang et al 2013). In the last few decades, photosensitization has been used for treating cancer, skin diseases and endodontic infections, but also in different food related applications (Strazzi Sahyon et al 2019). Compared to other antimicrobial "tools", one of the most important advantages of photosensitization is the absence of any microbial resistance (Brovko et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Impact of Curcumin-Mediated Photosensitization on Fungal Growth, Physicochemical Properties and Nutritional Composition in Australian Grown Strawberry

Sarwar

Netzel

et al. 2020

Food Anal. Methods

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The effect of photosensitization mediated by curcumin on fungal growth, physicochemical properties and nutritional composition in Australian grown "Albion" strawberries was evaluated. Curcumin solution (1200, 1000 and 800 μM) was sprayed on the strawberry surface, followed by illumination using blue light (420 nm) for 10 min at a dosage of 42 J/cm 2 and stored at 4 ± 2°C for 12 days. The fruit photosensitized with 1000-μM curcumin (10 min, followed by storage at 4 ± 2°C) lasted up to 12 days with a fungal infection rate of 52%, whereas untreated control fruit developed 100% fungal infection and lasted for 8 days only under the same conditions. This treatment did not have an effect on colour, pH, moisture content, titratable acidity, ascorbic acid, total phenolic content and anthocyanins, whereas total soluble solids (9%) and total sugar (22%) were increased (p < 0.05). These initial results indicate that curcumin-based photosensitization could be an effective non-thermal technology to preserve the nutritional quality as well as to extend the postharvest life of fresh strawberry fruit.

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Influence of curcumin photosensitizer in photodynamic therapy on the mechanical properties and push-out bond strength of glass-fiber posts to intraradicular dentin

Cited by 52 publications

References 37 publications

Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine

Effect of Bleaching and Ca(OH)2 Dressing on the Bond Strength of Fiberglass Posts to Root Dentine

Influence of synthetic and natural photosensitizers activated by photodynamic therapy on extrusion bond strength of fiber post to radicular dentin

Impact of Curcumin-Mediated Photosensitization on Fungal Growth, Physicochemical Properties and Nutritional Composition in Australian Grown Strawberry

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