scholarly journals The Linear Shrinkage and Microhardness of Packable Composites Polymerized by QTH or PAC Unit

10.2341/04-99 ◽  
2006 ◽  
Vol 31 (1) ◽  
pp. 3-10 ◽  
Author(s):  
S-H. Park ◽  
B-D. Noh ◽  
Y-S. Cho ◽  
S-S. Kim
Keyword(s):  
Clinical Relevance ◽  
Linear Shrinkage ◽  
Clinical Complications ◽  
Shallow Cavities ◽  
Light Curing ◽  
Rapid Cure

Clinical Relevance When packable composites are cured using the PAC system, 12 seconds of light curing is recommended for shallow cavities that do not exceed 2 mm, and many measures should be applied in order to avoid the clinical complications associated with a rapid cure.

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.

Comparison of Temperature Changes in the Pulp Chamber Induced by Various Light Curing Units, In Vitro

10.2341/05-26 ◽  
2006 ◽  
Vol 31 (2) ◽  
pp. 261-265 ◽  
Author(s):  
A. R. Yazici ◽  
A. Müftü ◽  
G. Kugel ◽  
R. D. Perry
Keyword(s):  
Clinical Relevance ◽  
Critical Factor ◽  
Pulp Chamber ◽  
Temperature Changes ◽  
Thermal Transfer ◽  
Light Curing

Clinical Relevance The thickness of the residual dentin is a critical factor in the reducing thermal transfer to pulp, and this transfer varies with the curing unit used.

The Effect of Energy Application Sequence on the Microtensile Bond Strength of Different C-factor Cavity Preparations

10.2341/06-30 ◽  
2007 ◽  
Vol 32 (2) ◽  
pp. 124-132 ◽  
Author(s):  
G. Maghaireh ◽  
M. R. Bouschlicher ◽  
F. Qian ◽  
S. R. Armstrong
Keyword(s):  
Bond Strength ◽  
Clinical Relevance ◽  
High Irradiance ◽  
Resin Composites ◽  
Microtensile Bond Strength ◽  
Light Curing ◽  
Bond Strengths ◽  
Energy Application

Clinical Relevance Light curing of resin composites in high C-factor cavity preparations using a high irradiance energy application sequence may lead to decreased bond strength. However, the high irradiance energy application sequence did not result in lower bond strengths in lower C-factor cavity preparations.

‘Let there be Light,’ and there was Light, but was it Enough? A Review of Modern Dental Light Curing

Dental Update ◽  
2021 ◽  
Vol 48 (8) ◽  
pp. 633-640 ◽  
Author(s):  
Stephen J Bonsor ◽  
William M Palin
Keyword(s):  
Clinical Relevance ◽  
Best Practice ◽  
Clinical Performance ◽  
Dental Materials ◽  
Common Method ◽  
Basic Knowledge ◽  
Light Curing ◽  
Key Aspects

Light curing, or photopolymerization, is a very common method of effecting the set of resin-containing dental materials. This review summarizes key aspects that influence optimal photopolymerization, and how both a basic knowledge of chemistry and properties of the light-curing device are essential to achieve optimal clinical performance of the material. Tips are offered with respect to both the light-curing units and those materials which are cured by them to ensure best practice when working clinically. CPD/Clinical Relevance: A thorough knowledge and understanding of photopolymerization is critical to clinicians given that many dental materials in contemporary use are cured by this means.

The Influence of Tip Geometry and Distance on Light-curing Efficacy

10.2341/07-94 ◽  
2008 ◽  
Vol 33 (3) ◽  
pp. 325-331 ◽  
Author(s):  
G. Corciolani ◽  
A. Vichi ◽  
C. L. Davidson ◽  
M. Ferrari
Keyword(s):  
Light Source ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Restorative Material ◽  
Entry And Exit ◽  
Depth Of Cure ◽  
Composite Restorations ◽  
Light Curing

Clinical Relevance Among the factors that significantly influence the depth of cure of resin composite restorations—the distance between the tip of the light source and the restorative material—as well as the geometry of the tip, are crucial parameters. Increasing the ratio between the entry and exit diameter of the tip will result in an improvement in the depth of cure for lower distances between the tip of the light source and the restorative material, while decreasing the ratio of the depth of cure, which will be higher for greater distances.

scholarly journals Polymerization Shrinkage Evaluation of Restorative Resin-Based Composites Using Fiber Bragg Grating Sensors

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 859 ◽  
Author(s):  
Rodrigo Lins ◽  
Alexandra Vinagre ◽  
Nélia Alberto ◽  
Maria F. Domingues ◽  
Ana Messias ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Repeated Measures ◽  
Linear Shrinkage ◽  
Bragg Grating ◽  
Polymerization Shrinkage ◽  
Repeated Measures Anova ◽  
Custom Made ◽  
Light Curing ◽  
Fbg Sensors ◽  
Post Hoc

The purpose of this study was to compare the linear polymerization shrinkage of different restorative resin-based composites (RBCs) using fiber Bragg grating (FBG) sensors. Five RBCs were evaluated: Zirconfill® (ZFL); Aura Bulk-Fill (ABF); Tetric® N-Ceram Bulk-Fill (TBF); FiltekTM Bulk-Fill (FBF); and Admira Fusion-Ormocer® (ADF). Ten samples per resin were produced in standardized custom-made half-gutter silicone molds. Two optical FBG sensors were used to assess temperature and polymerization shrinkage. Light curing was performed for 40 s and polymerization shrinkage was evaluated at 5, 10, 40, 60, 150, and 300 s. Statistical analysis was accomplished for normal distribution (Shapiro-Wilk, p > 0.05). Two-way repeated measures ANOVA with Greenhouse-Geisser correction followed by Bonferroni′s post-hoc test was used to analyze the linear shrinkage data (p < 0.05). ZFL showed the highest linear shrinkage and ADF the lowest. Shrinkage increased for all RBCs until 300 s, where significant differences were found between ADF and all other resins (p < 0.05). Among bulk-fill RBCs, TBF showed the lowest shrinkage value, but not statistically different from FBF. The ADF presented lower linear shrinkage than all other RBCs, and restorative bulk-fill composites exhibited an intermediate behavior.

scholarly journals Influence of C-factor and Light-curing Mode on Gap Formation in Resin Composite Restorations

2009 ◽  
Vol 34 (5) ◽  
pp. 544-550 ◽  
Author(s):  
G. O. Santos ◽  
M. E. O. Santos ◽  
E. M. Sampaio ◽  
K. R. H. C. Dias ◽  
E. M. Silva
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Gap Formation ◽  
Composite Restorations ◽  
Light Curing

Clinical Relevance Gap formation in resin composite restorations may have influence on some parameters, such as C-factor and light-curing mode.

Polymerization Efficiency of Different Photocuring Units Through Ceramic Discs

2006 ◽  
Vol 31 (1) ◽  
pp. 68-77 ◽  
Author(s):  
H. Jung ◽  
K. H. Friedl ◽  
K. A. Hiller ◽  
H. Furch ◽  
S. Bernhart ◽  
...  
Keyword(s):  
Light Source ◽  
Clinical Relevance ◽  
Light Curing ◽  
Ceramic Thickness ◽  
Ceramic Restorations

Clinical Relevance The ability of modern light curing units to photocure luting resin through ceramic restorations is dependent on the type of light source, ceramic thickness and use of a self-curing catalyst.

Effect of Light Energy Density on Conversion Degree and Hardness of Dual-cured Resin Cement

2010 ◽  
Vol 35 (1) ◽  
pp. 120-124 ◽  
Author(s):  
P. C. P. Komori ◽  
A. B. Paula ◽  
A. A. Martin ◽  
R. N. Tango ◽  
M. A. C. Sinhoreti ◽  
...  
Keyword(s):  
Energy Density ◽  
Physical Properties ◽  
Clinical Relevance ◽  
Light Energy ◽  
Resin Cement ◽  
Conversion Degree ◽  
Light Curing ◽  
Effect Of Light

Clinical Relevance Light energy density can influence the curing of dual-cured resin cement. The ultimate physical properties of dual-cured resin cement depend on light energy delivered from the light-curing unit. It can guide the clinicians to select the appropriate curing unit for curing dual cement.

Parameters Influencing Increase in Pulp Chamber Temperature with Light-curing Devices: Curing Lights and Pulpal Flow Rates

2010 ◽  
Vol 35 (3) ◽  
pp. 353-361 ◽  
Author(s):  
S-H. Park ◽  
J-F. Roulet ◽  
S. D. Heintze
Keyword(s):  
Light Intensity ◽  
High Power ◽  
Clinical Relevance ◽  
High Power Density ◽  
Pulp Chamber ◽  
Cavity Preparation ◽  
Flow Rates ◽  
Chamber Temperature ◽  
Light Curing ◽  
Short Time

Clinical Relevance Because increase in temperature is related directly to light intensity and exposure time, curing devices with high power density (&gt;1200 mW/cm2) should only be activated for a short time (&lt;15 seconds), even in teeth without cavity preparation.

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