Effect of radiotherapy on the radiopacity and flexural strength of a composite resin

Effect of radiotherapy on the radiopacity and flexural strength of a composite resin

The aim of this study was to evaluate the effect of radiotherapy on the radiopacity and flexural strength of composite resin. Forty Z250 composite resin specimens were polymerized using a halogen light-curing unit and divided into 5 groups, in accordance with the radiotherapy dose: G1- without irrad...

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Bibliographic Details
Published in:Acta odontológica latinoamericana Vol. 21; no. 2; pp. 159 - 162
Main Authors: Catelan, Anderson, Padilha, Ana C S, Salzedas, Leda M P, Coclete, Gilberto A, dos Santos, Paulo H
Format: Journal Article
Language:English
Published: Argentina 2008
Subjects:
Absorptiometry, Photon
Composite Resins - chemistry
Composite Resins - radiation effects
Contrast Media - chemistry
Contrast Media - radiation effects
Curing Lights, Dental
Dental Materials - chemistry
Dental Materials - radiation effects
Dental Stress Analysis - instrumentation
Dentistry
Humans
Materials Testing
Pliability
Polymers - chemistry
Polymers - radiation effects
Radiography, Dental, Digital - instrumentation
Radiotherapy
Radiotherapy Dosage
Stress, Mechanical
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Summary:The aim of this study was to evaluate the effect of radiotherapy on the radiopacity and flexural strength of composite resin. Forty Z250 composite resin specimens were polymerized using a halogen light-curing unit and divided into 5 groups, in accordance with the radiotherapy dose: G1- without irradiation, G2- 30 Gy, G3- 40 Gy, G4- 50 Gy and GS- 60 Gy Digital images were obtained using a GE 100 X-ray. Radiopacity values were obtained with the Digora digital imaging system and the flexural strength was evaluated with an EMIC universal testing machine. Data were submitted to ANOVA and Tukey 's test. G1 presented the highest radiopacity value, followed by G3, G5, G4 and G2. For flexural strength, G1 presented the lowest value, followed by G2, G5, G3 and G4. Differences were no significant (p>0.05). The commonly used dosage of radiotherapy treatment, did not cause alteration in the radiopacity and flexural strength of resin-based composites.
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ISSN:0326-4815