Effect of LED and Argon Laser on Degree of Conversion and Temperature Rise of Hybrid and Low Shrinkage Composite Resins

Pahlevan, Ayob; Tabatabaei, Masumeh Hasani; Arami, S; Valizadeh, Sara

doi:10.2174/1874210601610010538

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…38 Calura et al underlined the shortest irradiation time of lasers when compared to halogen lamps 39 while Shanthala and Munshi, in an in vitro study on primary teeth, showed with a 10-second laser exposure, a shear bond strength higher than the one obtained with a halogen lamp polymerization with a 40-second exposure, 40 and these data were also confirmed by the study of Fleming and Maillet. 41 Pahlevan et al 42 measured the degree of conversion (DC) using Fourier-transform infrared spectroscopy and showed that the argon laser gave the lowest temperature rise, even if the DC obtained by the different curing units was not significantly different.…”

Section: Composite Resin Photopolymerizationmentioning

confidence: 99%

Use of Blue and Blue-Violet Lasers in Dentistry: A Narrative Review

et al. 2021

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Introduction: Blue and blue-violet diode lasers (450 and 405 nm) seem to represent an interesting approach for several clinical treatments today. The aim of this narrative review is to describe and comment on the literature regarding the utilization of blue and blue-violet lasers in dentistry. Methods: A search for "blue laser AND dentistry" was conducted using the PubMed database, and all the papers referring to this topic, ranging from 1990 to April 2020, were analyzed in the review. All the original in vivo and in vitro studies using 450 nm or 405 nm lasers were included in this study. All the articles on the LED light, laser wavelengths other than 405 and 450 nm and using lasers in specialties other than dentistry, as well as case reports, guideline papers and reviews were excluded. Results: From a total of 519 results, 47 articles met the inclusion criteria and were divided into 8 groups based on their fields of application: disinfection (10), photobiomodulation (PBM) (4), bleaching (1), resin curing (20), surgery (7), periodontics (1), endodontics (1) and orthodontics (3). Conclusion: Blue and blue-violet diode lasers may represent new and effective devices to be used in a large number of applications in dentistry, even if further studies will be necessary to fully clarify the potentialities of these laser wavelengths.

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Section: Composite Resin Photopolymerizationmentioning

confidence: 99%

Use of Blue and Blue-Violet Lasers in Dentistry: A Narrative Review

et al. 2021

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“…Quartz-tungsten-halogen (QTH) LCUs have been the established gold standard for this purpose. However, following the advent of light-emitting diode (LED) LCUs, which have multiple benefits, QTH LCUs have been largely replaced with LEDs [ 2 3 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of 3 different light-curing units on the physico-mechanical properties of bleach-shade resin composites

et al. 2022

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Objectives This study investigated the microhardness, flexural strength, and color stability of bleach-shade resin composites cured with 3 different light-curing units. Materials and Methods In this in vitro experimental study, 270 samples were fabricated of bleach and A2 shades of 3 commercial resin composites (Point 4, G-aenial Anterior, and Estelite Sigma Quick). Samples ( n = 5 for each trial) were cured with Bluephase N, Woodpecker LED.D, and Optilux 501 units and underwent Vickers microhardness and flexural strength tests. The samples were tested after 24 hours of storage in distilled water. Color was assessed using a spectrophotometer immediately after preparation and 24 hours after curing. Data were analyzed using 3-way analysis of variance and the Tukey test ( p ≤ 0.001). Results Samples cured with Optilux exhibited the highest and those cured with LED.D exhibited the lowest microhardness ( p = 0.023). The bleach shade of Point 4 composite cured with Optilux displayed the highest flexural strength, while the same composite and shade cured with Sigma Quick exhibited the lowest ( p ≤ 0.001). The color change after 24 hours was greatest for the bleach shade of G-aenial cured with Bluephase N and least for the A2 shade of Sigma Quick cured with Optilux ( p ≤ 0.001). Conclusions Light curing with polywave light-emitting diode (LED) yielded results between or statistically similar to those of quartz-tungsten-halogen and monowave LED in the microhardness and flexural strength of both A2 and bleach shades of resin composites. However, the brands of light-curing devices showed significant differences in color stability.

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“…Case Reports in Dentistry Due to the polymerization shrinkage which is the main drawback of direct composite restorations, dentists may encounter many problems in selecting these restorations [13]. However, Stress Reduced Direct Composite (SRDC) technique could be considered as an alternative to indirect restorations [8].…”

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confidence: 99%

Restoration of a Nonvital Tooth with Fiber Reinforce Composite (Wallpapering Technique)

Valizadeh

Omrani

Deliperi

et al. 2020

Case Reports in Dentistry

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Introduction. Reconstruction of endodontically treated tooth (ETT) is one of the greatest challenges in dentistry. Clinical success of fiber reinforcement composite (FRC) restorations in ETT depends on many factors like remaining tooth structure, knowing advantages of adhesive dentistry besides its drawbacks, and the correct use of fibers in combination with resin composite. Case Report. This article presents a case in which fibers have been used in composite buildup in order to increase the toughness and strength of the ETT direct restoration. In addition, this technique does not require root canal enlargement to eliminate the risk of root perforation. Also, this one visit treatment can be helpful for patients that could not pay the cost of indirect restoration and/or have no time. Conclusion. It seems in selected patients with special considerations, FRC composite restoration is valid alternatives for indirect restoration.

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Effect of LED and Argon Laser on Degree of Conversion and Temperature Rise of Hybrid and Low Shrinkage Composite Resins

Cited by 8 publications

References 23 publications

Use of Blue and Blue-Violet Lasers in Dentistry: A Narrative Review

Use of Blue and Blue-Violet Lasers in Dentistry: A Narrative Review

Effects of 3 different light-curing units on the physico-mechanical properties of bleach-shade resin composites

Restoration of a Nonvital Tooth with Fiber Reinforce Composite (Wallpapering Technique)

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