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Comparison of microleakages of photo-cured composites using three different light sources: halogen lamp, LED and argon laser: an in vitro study

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Abstract

In this study, we compared the microleakage of composite fillings cured with halogen bulb, LED and argon ion laser (488 nm). Twenty-four extracted human molars were divided randomly in three groups. Six cavities were prepared on the coronal part of each tooth. Standard cavities (1.7 × 2 mm) were prepared. Cavities were acid etched, sealed with Scotch Bond 1 and filled by a hybrid composite. Cavities were exposed to one light source, thermocycled and immersed in a 2% methylene blue dye solution. Dye penetration in the leakage of cavities was recorded using a digital optical microscope. Mean values of percentage of dye penetrations in microleakages of cavities were 49.303 ± 5.178% for cavities cured with LED, 44.486 ± 6.075% with halogen bulb and 36.647 ± 5.936% for those cured by argon laser. Statistically significant difference exists between cavities cured by halogen vs LED (P < 0.01), halogen vs laser (P < 0.001) and LED vs laser (P < 0.001). The lowest microleakage was observed in the cavities and composites cured with argon ion laser.

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Authors and Affiliations

  1. Department of Dental Sciences, Faculty of Medicine, University of Liege, Liege, Belgium

    M. Tielemans, S. O. Geerts, M. Lamy, M. Limme, E. Rompen & S. Nammour

  2. Unit of Ultra-structural Morphology, Laboratory of Evolutive and Functional Morphology, University of Liege, Liege, Belgium

    Ph. Compere

  3. Department of Operative Dentistry and Endodontology, Dental School, Ghent University, Ghent University Clinic, Ghent, Belgium

    R. J. G. De Moor & K. I. M. Delmé

  4. Laboratory of Surfaces–Interfaces in Odontology, University of Nice–Sophia Antipolis, Nice, France

    M. F. Bertrand

  5. Grand Place, 12, 6120, Ham-sur-heure, Belgium

    M. Tielemans

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  1. M. Tielemans
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  2. Ph. Compere
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  3. S. O. Geerts
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  4. M. Lamy
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Correspondence to M. Tielemans.

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Tielemans, M., Compere, P., Geerts, S.O. et al. Comparison of microleakages of photo-cured composites using three different light sources: halogen lamp, LED and argon laser: an in vitro study. Lasers Med Sci 24, 1–5 (2009). https://doi.org/10.1007/s10103-007-0504-4

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  • DOI: https://doi.org/10.1007/s10103-007-0504-4

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