Effect of short LED lamp exposure on wear resistance, residual monomer and degree of conversion for Filtek Z250 and Tetric EvoCeram composites

Kopperud, Hilde Molvig; Johnsen, Gaute Floer; Lamolle, Sébastien F.; Kleven, Inger S.; Wellendorf, Hanne; Haugen, Håvard Jostein

doi:10.1016/j.dental.2013.04.022

Cited by 34 publications

(24 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These results corroborate previous findings that slower photopolymerization is more successful to rapid (five-second) photopolymerization of RBCs. 14,[53][54][55][56][57][58]63 In common with previous studies, this study used the 80% bottom/top threshold to define when the RBC is adequately cured. 22,24-27 It is interesting to note that using a metal mold under these test conditions, a conventional hybrid resin containing only CQ was able to achieve a 5.0-mm depth of cure when 73 J/cm 2 was delivered from the LED light in 40 seconds, whereas Tetric EvoCeram Bulk Fill only achieved a 4.0-mm depth of cure under the same conditions.…”

Section: Discussionmentioning

confidence: 99%

“…11 Additionally, when dental RBCs are not adequately polymerized (and thus do not reach a sufficient degree of monomer conversion), they are more likely to leach chemicals into the mouth. [12][13][14] Arbitrarily increasing light exposure times in an effort to prevent undercuring is not the answer because this may cause unacceptable thermal trauma to the pulp and surrounding tissues. [15][16][17] Thus, it is important for the clinician to know the optimal exposure times for the RBCs being used in the office.…”

Section: Introductionmentioning

confidence: 99%

“…49 These recommendations have been challenged more than once, because for a given dose of energy, longer exposure times at a lower irradiance seem to be beneficial factors to ensure optimal RBC properties. 14,[53][54][55][56][57][58][59] In addition, such high-output LCUs may cause more heating of the tooth and soft tissues, which raises the concerns of thermal damage. [15][16][17]36 Another method to shorten chairside time is to bulk fill and cure RBCs in just one light exposure.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of High Irradiance on Depth of Cure of a Conventional and a Bulk Fill Resin-based Composite

AlQahtani

Michaud²,

Sullivan

et al. 2015

Operative Dentistry

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of High Irradiance on Depth of Cure of a Conventional and a Bulk Fill Resin-based Composite

AlQahtani

Michaud²,

Sullivan

et al. 2015

Operative Dentistry

View full text Add to dashboard Cite

show abstract

“…The a* and b* values approach zero for achromatic colors (e.g., white and gray) but increase in magnitude with more intense colors (chroma). 9,65,66 The color of natural teeth is a complex combination of different layers (e.g., pulp chamber and its content, as well as dentin and enamel), with each layer having its unique optical properties and structure. Discussing tooth color matching is important in clinical settings, as a wide range of tooth shades and colors occupy only a narrow area in the broader color schematic.…”

Section: Discussionmentioning

confidence: 99%

<p>Color stability of Lucirin-photo-activated resin composite after immersion in different staining solutions: a spectrophotometric study</p>

AlSheikh¹

2019

CCIDE

View full text Add to dashboard Cite

Introduction: Exceptional optical properties characterize teeth. As such, an esthetic restorative material should enable the dental professional to imitate the optical properties of natural teeth accurately. IPS Empress Direct was introduced to the market with the claim that it can mimic optically dental tissues with superior clinical performance. Aim: To evaluate the ability of IPS Empress Direct to mimic tooth appearance and color and resist staining. Materials and methods: Three disc specimens were prepared for each shade of enamel and dentin of Lucirin-based composite, IPS Empress Direct (Ivoclar Vivadent) (A1, A2, A3, B1, and B2) (total of 60). The specimens were submitted to colorimetric evaluation in comparison after immersion in 10 different solutions (coffee, coffee with sugar, coffee with milk, red tea, red tea with sugar, red tea with milk, tomato juice, pomegranate juice, coke, and distilled water as a control group) for 4 weeks using spectrophotometric analysis. Results: After plotting the data and conducting linear regression analyses, IPS Empress showed high potential in mimicking the optical properties of natural tooth color according to the CIE color space. Three solutions showed a change in color higher than 3, coffee, coffee with sugar, and red tea. All other solution showed changes in color that are acceptable clinically. Conclusion: IPS Empress Direct can satisfactory mimic teeth appearance and color while manifesting high stability of color resisting staining upon clinical aging.

show abstract

“…). Dental composites may contain 5–18 wt% residual monomers in the organic matrix . The residual monomers leach out of the material over time.…”

Section: Optimizing Safety Of Resin‐based Compositesmentioning

confidence: 99%

Optimizing quality and safety of dental materials

Dahl

Stenhagen

2018

European J Oral Sciences

View full text Add to dashboard Cite

This paper discusses aspects of quality and safety improvement of the most commonly used dental restorative materials, the resin-based composites. From a patient's perspective, long-lasting resin-based restorations without complications are important. Recurrent caries and fracture are the most common causes for restoration failures. Proper handling and curing of the composites improve the mechanical properties of the restorations and increase safety by reducing exposure to residual methacrylate monomers. A number of compounds have been introduced in restorative materials to reduce the risk of recurrent caries, even though a real breakthrough has not yet been achieved. It is concluded that simple measures may improve the quality and safety of resin-based composite restorations.

show abstract

Effect of short LED lamp exposure on wear resistance, residual monomer and degree of conversion for Filtek Z250 and Tetric EvoCeram composites

Cited by 34 publications

References 36 publications

Effect of High Irradiance on Depth of Cure of a Conventional and a Bulk Fill Resin-based Composite

Effect of High Irradiance on Depth of Cure of a Conventional and a Bulk Fill Resin-based Composite

<p>Color stability of Lucirin-photo-activated resin composite after immersion in different staining solutions: a spectrophotometric study</p>

Optimizing quality and safety of dental materials

Contact Info

Product

Resources

About