| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Portugal, Jaime
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Understanding the Mechanical, Surface, and Color Behavior of Oral Bioactive Prosthetic Polymers under Biodegradation Processescitations
- 2019Surface properties after chemical aging of chlorhexidine delivery systems based on acrylic resincitations
- 2019Effect of surface treatment and the use of mouthwashes on repaired composite bond strength
- 2018Effect of Zirconia Pigmentation on Translucencycitations
- 2016Effect of ethanol solutions as post-polymerization treatment on the properties of acrylic reline resinscitations
- 2016Resin-bonded fixed dental prosthesis with a modified treatment surface in a zirconia framework: a case report
- 2016Resin-bonded fixed dental prosthesis with a modified treatment surface in a zirconia framework
- 2016Resin-bonded fixed dental prosthesis with a modified treatment surface in a zirconia framework:a case report
- 2015Resin composites curing inhibition by oclusal matrix materialscitations
- 2015Influence of exposure time and distance to light on the ability to composite light curingcitations
- 2012Effect of citric acid ageing on composite resin microhardness and flexural strength [Efeito do envelhecimento em ácido cítrico na microdureza e resistência à flexão de resinas compostas]
- 2009Grau de conversão de resinas compostas.influência do método de fotopolimerizaçãocitations
- 2008Shear bond strength of aged dental amalgam repaired with compositecitations
- 2007Clinical performance of an experimental veneering composite in FPDS. One-year report
Places of action
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article
Grau de conversão de resinas compostas.influência do método de fotopolimerização
Abstract
Objectives: To evaluate the degree of conversion of four composite resins and to determine the influence of two polymerization methods. Methods: Forty 2mm thick composite disks were assigned to 8 experimental groups (n=5) according to several possible combinations between the polymerization methods [QTH curing unit (400mW/cm2)/40s and a LED curing unit (800mW/cm2)/20s] and the composites [Suprafil (R&S), Natural Elegance (Henry Schein Inc.), Proclinic Composite PM (Madespa SA) and FiltekTM Z250 (3M ESPE)] tested. Specimens were polymerized exposing the light only to the top surface. Human enamel was used below the disks, as a reflection material. After dry storage in the dark for 24h, Vickers microhardness measurements were performed for each specimen on the top and bottom surfaces. Microhardness ratio was calculated for each specimen. A minimum of 0.80 was considered as a correct polymerization. Data were analyzed with ANOVA and t-Teste. Results: Microhardness ratio ranged between 0.79 and 0.98. To QTH specimens, Z250 showed statistically (p<0,05) higher ratios than the others composites. To LED specimens, there were no statistically (p=0.05) differences between composites with the exception of Suprafil who has shown a lower ratio. Conclusions: Despite the fact that Z250 showed an higher microhardness ratio, all the experimental groups reached an adequate polymerization, excepted for the group Proclinic/QTH (0.79). Using the LED curing unit may reduce the working time.