Changes in Degree of Conversion and Microhardness of Dental Resin Cements

2010 ◽  
Vol 35 (2) ◽  
pp. 203-210 ◽  
Author(s):  
Y. L. Yan ◽  
Y. K. Kim ◽  
K-H. Kim ◽  
T-Y. Kwon
Keyword(s):  
Clinical Relevance ◽  
Degree Of Conversion ◽  
Light Activation ◽  
Dental Resin ◽  
Resin Cements

Clinical Relevance Chemical- and dual-cured resin cements, as well as light-cured resin cements, appear to be cured within the first 24 hours post-mix or post-light activation with no further significant changes in the degree of conversion or microhardness.

Effect of LED Light-Curing Spectral Emission Profile on Light-Cured Resin Cement Degree of Conversion

2020 ◽  
Author(s):  
RQ Ramos ◽  
RR Moraes ◽  
GC Lopes
Keyword(s):  
Clinical Relevance ◽  
Degree Of Conversion ◽  
Resin Cement ◽  
Light Activation ◽  
Spectral Emission ◽  
Led Light ◽  
Emission Profile ◽  
Light Curing

Clinical Relevance The use of multipeak LED light-curing guarantees efficiency on light activation of Ivocerin-containing light-cured resin cement.

scholarly journals Correlation between the degree of conversion and the elution of leachable components from dental resin-based cements

2011 ◽  
Vol 76 (9) ◽  
pp. 1307-1323 ◽  
Author(s):  
Kosovka Obradovic-Djuricic ◽  
Vesna Medic ◽  
Marina Radisic ◽  
Mila Lausevic
Keyword(s):  
Triethylene Glycol ◽  
Degree Of Conversion ◽  
Cement Matrix ◽  
Dental Resin ◽  
Resin Cements ◽  
Triethylene Glycol Dimethacrylate ◽  
Urethane Dimethacrylate ◽  
Post Hoc ◽  
Composite Cements ◽  
One Way Anova

This study examined the possible correlation between the degree of conversion (DC) and the amount of substances eluted from three commercial cured resin-based cements. The DC of the various resin-based cements was measured by Raman spectroscopy, while the quantity of unreacted monomers released from the cement matrix (triethylene glycol dimethacrylate, TEGDMA, urethane dimethacrylate, UDMA, 2- hydroxyethyl methacrylate, HEMA and bis phenol A) was determined by high pressure liquid chromatography (HPLC). The obtained results, after multiple statistical evaluation (one way ANOVA, LSD post hoc test), showed no significant differences in the DC values between the resin cements. On the contrary, the results of the HPLC analysis depicted statistically significant differences between the three materials with respect to the amount of leached monomers. In addition, no correlation between the DC and the amount of eluted substances from the tested cured composite cements was found.

Dual and Self-curing Potential of Self-adhesive Resin Cements as Thin Films

2011 ◽  
Vol 36 (6) ◽  
pp. 635-642 ◽  
Author(s):  
RR Moraes ◽  
N Boscato ◽  
PS Jardim ◽  
LFJ Schneider
Keyword(s):  
Thin Films ◽  
Clinical Relevance ◽  
Degree Of Conversion ◽  
Lower Degree ◽  
Resin Cements ◽  
Adhesive Resin

Clinical Relevance Self-adhesive resin cements present slower polymerization and lower degree of conversion than conventional resin cements, in either the dual- or self-cure mode.

The effect of monolithic zirconia thickness on the degree of conversion of dental resin cements: ATR-FTIR spectroscopic analysis

2016 ◽  
Vol 86 ◽  
pp. 212-217 ◽  
Author(s):  
Banu Çukurluöz Bayındır ◽  
Secil Karakoca Nemli ◽  
Sevgi Haman Bayarı ◽  
Bilge Turhan Bal
Keyword(s):  
Spectroscopic Analysis ◽  
Degree Of Conversion ◽  
Dental Resin ◽  
Resin Cements ◽  
Monolithic Zirconia

scholarly journals Activation Mode Effects on the Shear Bond Strength of Dual-cured Resin Cements

2010 ◽  
Vol 35 (5) ◽  
pp. 515-521 ◽  
Author(s):  
A. L. Faria-e-Silva ◽  
M. M. Fabião ◽  
V. G. Arias ◽  
L. R. M. Martins
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
Shear Bond Strength ◽  
Resin Cement ◽  
Light Activation ◽  
Resin Cements ◽  
Mode Effects ◽  
Clinical Conditions ◽  
Over Time

Clinical Relevance The light activation of dual-cured resin cements is essential for improved shear bond strength. Bond strength is low in the first minutes following insertion of a resin cement and increases over time. Under clinical conditions, care should be taken to limit occlusal stress immediately after luting an indirect restoration.

Influence of Curing Mode and Time on Degree of Conversion of One Conventional and Two Self-adhesive Resin Cements

2010 ◽  
Vol 35 (3) ◽  
pp. 295-299 ◽  
Author(s):  
T. R. Aguiar ◽  
M. D. Francescantonio ◽  
C. A. G. Arrais ◽  
G. M. B. Ambrosano ◽  
C. Davanzo ◽  
...  
Keyword(s):  
Clinical Relevance ◽  
Degree Of Conversion ◽  
Resin Cements ◽  
Experimental Conditions ◽  
Adhesive Resin

Clinical Relevance Within the limited experimental conditions, self-adhesive cements provided a higher degree of conversion values when light-activated. In addition, the results showed that, after 15 minutes, the degree of conversion values increased for all materials in both activation modes.

scholarly journals Effect of immediate and delayed light activation on the mechanical properties and degree of conversion in dual-cured resin cements

2012 ◽  
Vol 54 (3) ◽  
pp. 261-266 ◽  
Author(s):  
André L. Faria-e-Silva ◽  
Evandro Piva ◽  
Giana S. Lima ◽  
Letícia C. Boaro ◽  
Roberto R. Braga ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Degree Of Conversion ◽  
Light Activation ◽  
Resin Cements

scholarly journals Effect of Immediate or Delayed Light Activation on Curing Kinetics and Shrinkage Stress of Dual-Cure Resin Cements

2011 ◽  
Vol 36 (2) ◽  
pp. 196-204 ◽  
Author(s):  
A Faria-e-Silva ◽  
L Boaro ◽  
R Braga ◽  
E Piva ◽  
V Arias ◽  
...  
Keyword(s):  
Clinical Relevance ◽  
Curing Kinetics ◽  
Shrinkage Stress ◽  
Light Activation ◽  
Resin Cements ◽  
Clinical Conditions

Clinical Relevance Under clinical conditions, delayed light activation of dual-cured resin cements may be advantageous in order to reduce shrinkage stress.

scholarly journals The Photoinitiators Used in Resin Based Dental Composite—A Review and Future Perspectives

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 470
Author(s):  
Andrea Kowalska ◽  
Jerzy Sokolowski ◽  
Kinga Bociong
Keyword(s):  
Current Knowledge ◽  
Biomechanical Properties ◽  
Degree Of Conversion ◽  
Dental Composite ◽  
Polymerization Process ◽  
Dental Composites ◽  
Dental Resin ◽  
Dental Resins ◽  
Light Curing

The presented paper concerns current knowledge of commercial and alternative photoinitiator systems used in dentistry. It discusses alternative and commercial photoinitiators and focuses on mechanisms of polymerization process, in vitro measurement methods and factors influencing the degree of conversion and hardness of dental resins. PubMed, Academia.edu, Google Scholar, Elsevier, ResearchGate and Mendeley, analysis from 1985 to 2020 were searched electronically with appropriate keywords. Over 60 articles were chosen based on relevance to this review. Dental light-cured composites are the most common filling used in dentistry, but every photoinitiator system requires proper light-curing system with suitable spectrum of light. Alternation of photoinitiator might cause changing the values of biomechanical properties such as: degree of conversion, hardness, biocompatibility. This review contains comparison of biomechanical properties of dental composites including different photosensitizers among other: camphorquinone, phenanthrenequinone, benzophenone and 1-phenyl-1,2 propanedione, trimethylbenzoyl-diphenylphosphine oxide, benzoyl peroxide. The major aim of this article was to point out alternative photoinitiators which would compensate the disadvantages of camphorquinone such as: yellow staining or poor biocompatibility and also would have mechanical properties as satisfactory as camphorquinone. Research showed there is not an adequate photoinitiator which can be as sufficient as camphorquinone (CQ), but alternative photosensitizers like: benzoyl germanium or novel acylphosphine oxide photoinitiators used synergistically with CQ are able to improve aesthetic properties and degree of conversion of dental resin.

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