Results 211 to 220 of about 390,566 (256)

Degree of conversion of composites measured by DTA and FTIR

Dental Materials, 2001
Differential thermal analysis (DTA) using a split fiber optic light source has been reported to be a convenient method of measuring the degree of conversion (DC) of light-activated composites. The purpose of this study was to compare the results by DTA and Fourier transformation infrared spectroscopy (FTIR), and evaluate the usefulness of the DTA ...
S, Imazato, J F, McCabe, H, Tarumi, A, Ehara, S, Ebisu   +4 more
openaire   +3 more sources

Effect of light curing protocol on degree of conversion of composites

Acta Odontologica Scandinavica, 2014
To evaluate the degree of conversion (DC) of two light-cured composites with different protocols of light curing.One hundred and ninety two specimens (n = 8) were prepared (5 mm × 2 mm) according to experimental groups: two composite resins (Filtek Supreme and four seasons); three light curing protocols [20 s with the tip of the light curing unit (LCU)
, Glaucia MARIA BOVI Ambrosano, Giselle Maria Marchi   +2 more
exaly   +3 more sources

Degree of Conversion of Composite Resin: A Raman Study

Journal of Clinical Laser Medicine & Surgery, 2003
Near infrared Raman spectroscopy (RS) was used to monitor, in vitro, the degree of conversion (DC) of composite resins (Z100, 3M), photoactivated by both the halogen lamp and the argon laser beam.Several methods were used to study the alterations of composite resins. Vibration methods such as RS allow a precise assessment of the depth of polymerization
Luís Eduardo, Silva Soares, Aírton Abrahão, Martin, Antonio Luiz, Barbosa Pinheiro   +2 more
openaire   +2 more sources

Analysis of transmittance and degree of conversion of composite resins

Microscopy Research and Technique, 2019
The objective of this study was to evaluate and correlate light transmittance (T), initial degree of conversion (IDC), and degree of conversion after 24 hr (DC24) for 22 composite resins (CR) for enamel and dentin use. The transmittance (n = 10) was measured with a spectrometer at a wavelength of 468.14 nm.
Elisa do Carmo Agostini Balbinot, Marta Fávaro Costa Cesário Pereira, Jovito Adiel Skupien, Carlos Eduardo Agostini Balbinot, Grazielli da Rocha, Sergio Vieira   +5 more
openaire   +2 more sources

Contraction Stress Related to Degree of Conversion and Reaction Kinetics

Journal of Dental Research, 2002
Polymerization shrinkage of composites bonded to cavity preparations generates stress on the tooth/restoration interface. The purpose of this study was to verify the influence of degree of conversion and speed of polymerization reaction on contraction stress.
R R, Braga, J L, Ferracane
openaire   +2 more sources

An Agile Conversion Masters Degree Programme in Software Development

Proceedings of the 49th ACM Technical Symposium on Computer Science Education, 2018
The Information and Communications Technology (ICT) industry in New Zealand is growing rapidly. The traditional university courses are preparing an insufficient number of graduates to sustain the growth. Many of the traditional graduate students lack key soft skills that are important in team based software development.
Karsten Lundqvist, Craig Anslow, Michael Homer, Kris Bubendorfer, Dale Anthony Carnegie   +4 more
openaire   +1 more source

Influence of whitening on the degree of conversion of dental adhesives on dentin

European Journal of Oral Sciences, 2006
The aim of this study was to analyze the extent of polymerization of different adhesive systems on whitened dentin. One adhesive of each class was investigated: Adper Scotchbond Multi Purpose (3M ESPE); One‐Step (Bisco); Clearfil Protect Bond (Kuraray); and Xeno III (Dentsply DeTrey).
Cadenaro M, BRESCHI, LORENZO, Antoniolli F, MAZZONI, ANNALISA, Di Lenarda R.   +4 more
openaire   +4 more sources

Changes in Degree of Conversion and Microhardness of Dental Resin Cements

Operative Dentistry, 2010
SUMMARY There are few studies available on the post-light activation or post-mix polymerization of dental resin cements as a function of time. This in vitro study evaluated the successive changes in the degree of conversion (DC) and microhardness during polymerization of six commercial resin cements (light-cured [Choice 2, RelyX Veneer ...
Yong Li, Yan, Young Kyung, Kim, Kyo-Han, Kim, Tae-Yub, Kwon   +3 more
openaire   +2 more sources

Effect of temperature on composite polymerization stress and degree of conversion

Dental Materials, 2014
To test the following hypotheses: (1) degree of conversion (DC) and polymerization stress (PS) increase with composite temperature (2) reduced light-exposure applied to pre-heated composites produces similar conversion as room temperature with decreased PS.Composite specimens (diameter: 5mm, height: 2mm) were tested isothermally at 22°C (control), 40°C,
Fernanda C, Calheiros, Márcia, Daronch, Frederick A, Rueggeberg, Roberto R, Braga   +3 more
openaire   +2 more sources

Calculation of the maximal degree of conversion of butane into butylene

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1968
Equations for calculating the maximal degree of conversion of butane into butylene in relation to the selectivity of the catalyst have been derived.
Yu. S. Khodakov, Kh. M. Minachev
openaire   +1 more source