scholarly journals Influence of Photoactivation Protocol and Light Guide Distance on Conversion and Microleakage of Composite Restorations

2009 ◽  
Vol 34 (4) ◽  
pp. 408-414 ◽  
Author(s):  
N. R. G. Fróes-Salgado ◽  
C. S. C. Pfeifer ◽  
C. E. Francci ◽  
Y. Kawano
Keyword(s):  
Clinical Practice ◽  
Clinical Relevance ◽  
Light Guide ◽  
Degree Of Conversion ◽  
Composite Restorations ◽  
Soft Start

Clinical Relevance In this study, soft-start photoactivation methods were demonstrated to be able to reduce microleakage with only a discrete reduction in the degree of conversion. This was achieved when this protocol was associated with a 7 mm distance from the light guide, which is common in deep preparations in clinical practice.

Influence of Curing Methods and Matrix Type on the Marginal Seal of Class II Resin-based Composite Restorations In Vitro

2006 ◽  
Vol 31 (1) ◽  
pp. 97-105 ◽  
Author(s):  
N. Hofmann ◽  
A. Hunecke
Keyword(s):  
High Intensity ◽  
Clinical Relevance ◽  
Class Ii ◽  
Matrix Type ◽  
Composite Restorations ◽  
Soft Start ◽  
Curing Methods ◽  
Photo Curing ◽  
Selection Of

Clinical Relevance Selection of photo-curing protocol (high intensity vs soft-start) and matrix type (transparent vs metal) did not influence the margin quality and marginal seal of Class II resin-based composite restorations.

Post-gel Shrinkage Strain and Degree of Conversion of Preheated Resin Composite Cured Using Different Regimens

2010 ◽  
Vol 35 (2) ◽  
pp. 172-179 ◽  
Author(s):  
D. I. El-Korashy
Keyword(s):  
Clinical Relevance ◽  
Negative Impact ◽  
Resin Composite ◽  
Shrinkage Strain ◽  
Degree Of Conversion ◽  
Soft Start

Clinical Relevance The preheating of resin composite prior to curing yielded a better degree of conversion but had a negative impact on the induced post-gel shrinkage strain; soft-start mode is recommended, as it reduces the post-gel shrinkage strain without affecting the degree of conversion.

scholarly journals The Effect of Soft-start Polymerization by Second Generation LEDs on the Degree of Conversion of Resin Composite

10.2341/06-45 ◽  
2007 ◽  
Vol 32 (2) ◽  
pp. 160-165 ◽  
Author(s):  
L. E. S. Soares ◽  
P. C. S. Liporoni ◽  
A. A. Martin
Keyword(s):  
Clinical Relevance ◽  
Second Generation ◽  
Resin Composite ◽  
Organic Matrix ◽  
Degree Of Conversion ◽  
Resin Composites ◽  
Photo Polymerization ◽  
Soft Start ◽  
Halogen Light ◽  
Restoration Failure

Clinical Relevance Photo-polymerization using second generation LED and halogen light in the soft-start mode of curing was able to produce an adequate degree of conversion in resin composites. The lower degree of conversion produced by low power LED in the soft-start mode could lead to restoration failure, degradation of the organic matrix and recurrent caries.

scholarly journals Clinical Evaluation of the Soft-Start (Pulse-delay) Polymerization Technique in Class I and II Composite Restorations

2008 ◽  
Vol 33 (3) ◽  
pp. 265-271 ◽  
Author(s):  
D. C. N. Chan ◽  
W. D. Browning ◽  
K. B. Frazier ◽  
M. G. Brackett
Keyword(s):  
Clinical Evaluation ◽  
Clinical Relevance ◽  
Class I ◽  
Pulse Delay ◽  
Composite Restorations ◽  
Soft Start

Clinical Relevance Class I and II composite restorations placed with a Soft-Start technique showed no significant changes in post-op sensitivity to cold or any decreased signs of marginal stress.

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 Comparison of Proximal Contacts of Class II Resin Composite Restorations In Vitro

2006 ◽  
Vol 31 (6) ◽  
pp. 688-693 ◽  
Author(s):  
B. A. C. Loomans ◽  
N. J. M. Opdam ◽  
F. J. M. Roeters ◽  
E. M. Bronkhorst ◽  
R. C. W. Burgersdijk
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Composite Restorations ◽  
Composite Restoration

Clinical Relevance When placing a Class II resin composite restoration, the use of sectional matrix systems and separation rings to obtain tight proximal contacts is recommended.

Gingival Microleakage of Class II Resin Composite Restorations with Fiber Inserts

10.2341/06-86 ◽  
2007 ◽  
Vol 32 (3) ◽  
pp. 298-305 ◽  
Author(s):  
O. El-Mowafy ◽  
W. El-Badrawy ◽  
A. Eltanty ◽  
K. Abbasi ◽  
N. Habib
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Composite Restorations ◽  
Fiber Inserts

Clinical Relevance Fiber inserts incorporated at the gingival floor of Class II composite restorations resulted in a significant reduction of microleakage scores as compared to restorations made without inserts. This may lead to a reduced incidence of recurrent caries.

Factors Associated with Microleakage in Class II Resin Composite Restorations

10.2341/06-16 ◽  
2007 ◽  
Vol 32 (1) ◽  
pp. 60-66 ◽  
Author(s):  
S. Idriss ◽  
T. Abduljabbar ◽  
C. Habib ◽  
R. Omar
Keyword(s):  
Clinical Outcomes ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Class Ii ◽  
Gap Size ◽  
Marginal Gap ◽  
Factors Associated ◽  
Composite Restorations ◽  
Placement Technique

Clinical Relevance Even though marginal gap size was not shown to be a direct predictor for the extent of microleakage in resin composite restorations, both material and placement technique appear to be important determinants in microleakage and, thus, probably in clinical outcomes.

scholarly journals Influence of "soft start" polymerization on marginal sealing in resin composite restorations

2003 ◽  
Vol 50 (2) ◽  
pp. 59-64 ◽  
Author(s):  
Larisa Blazic ◽  
Slavoljub Zivkovic
Keyword(s):  
Resin Composite ◽  
Nitrate Solution ◽  
Silver Nitrate Solution ◽  
Class Ii ◽  
Composite Resins ◽  
Human Teeth ◽  
Composite Restorations ◽  
Soft Start ◽  
Significant Difference ◽  
Bonding Systems

The purpose of this study was to evaluate the marginal microleakage in Class II with different materials in resin composite restorations cured by using "soft start" and standard polymerization techniques. Two adhesive Class II cavities were prepared in 50 human teeth with enamel in-between. Samples were divided into 5 groups and filled with composite resins, compatible flow resin composites and bonding systems. The ocluso-mesial restorations were cured with standard curing technique, and the ocluso-distal restorations were cured with "soft start" curing technique. After thermocycling, the teeth were immersed in silver nitrate solution and sectioned for leakage evaluation. The results pointed out, after "soft start" and standard curing techniques, that the best marginal behavior in Class II restorations was obtained with Tetric Ceram / Tetric Flow composite resins, then with Filtek Z 250 / Filtek Flow, followed by Admira Admira Flow and Point / Revolution composite materials. The deepest dye penetration was found in cavities with Diamond Lite / Diamond Link composite restorations. No statistically significant difference was found in the tested composite resin restorations, whether treated with "soft start" polymerization or with standard polymerization technique, in regard to marginal micro leakage.

Measuring Visualized Joint Surface in Hallux Metatarsophalangeal Arthroscopy

2018 ◽  
Vol 39 (8) ◽  
pp. 978-983
Author(s):  
Michael Hull ◽  
John T. Campbell ◽  
Clifford L. Jeng ◽  
R. Frank Henn ◽  
Rebecca A. Cerrato
Keyword(s):  
Clinical Practice ◽  
Clinical Relevance ◽  
Articular Surface ◽  
Proximal Phalanx ◽  
Metatarsophalangeal Joint ◽  
Metatarsal Head ◽  
Lateral View ◽  
Joint Surface ◽  
Foot And Ankle ◽  
Kirschner Wires

Background: Arthroscopy has been increasingly used to evaluate small joints in the foot and ankle. In the hallux metatarsophalangeal (MTP) joint, little data exist evaluating the efficacy of arthroscopy to visualize the articular surface. The goal of this cadaveric study was to determine how much articular surface of the MTP joint could be visualized during joint arthroscopy. Methods: Ten fresh cadaveric foot specimens were evaluated using standard arthroscopy techniques. The edges of the visualized joint surface were marked with curettes and Kirschner wires; the joints were then surgically exposed and imaged. The visualized surface area was measured using ImageJ® software. Results: On the distal 2-dimensional projection of the joint surface, an average 57.5% (range, 49.6%-65.3%) of the metatarsal head and 100% (range, 100%-100%) of the proximal phalanx base were visualized. From a lateral view of the metatarsal head, an average 72 degrees (range, 65-80 degrees) was visualized out of an average total articular arc of 199 degrees (range, 192-206 degrees), for an average 36.5% (range, 32.2%-40.8%) of the articular arc. Conclusion: Complete visualization of the proximal phalanx base was obtained. Incomplete metatarsal head visualization was obtained, but this is limited by technique limitations that may not reflect clinical practice. Clinical Relevance: This information helps to validate the utility of arthrosocpy at the hallux metatarsophalangeal joint.

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