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Clinical Oral Investigations
Published in: Clinical Oral Investigations 4/2017

01-05-2017 | Original Article

Clinical evaluation of composite restorations in Er:YAG laser-prepared cavities re-wetting with chlorhexidine

Authors: Daniel Galafassi, Camila Scatena, Rodrigo Galo, Fabiana Almeida Curylofo-Zotti, Silmara Aparecida Milori Corona, Maria Cristina Borsatto

Published in: Clinical Oral Investigations | Issue 4/2017

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Abstract

Objectives

The objective of this study was to evaluate longitudinally the composite restorations, performed in cavities prepared by Er:YAG or conventional bur, and dentin re-wetting with water or chlorhexidine.

Materials and methods

Twenty individuals with four active caries with cavitation reaching the dentin located on the occlusal surface of molars counterparts are selected. The teeth of each individual were randomly assigned into four groups: (I) Er:YAG laser (260 mJ/4 Hz) re-wetting with chlorhexidine, (II) Er:YAG laser (260 mJ/4 Hz) re-wetting with deionized water, (III) conventional method re-wetting with chlorhexidine, and (IV) conventional method re-wetting with deionized water. The teeth were isolated, prepared cavities, phosphoric acid etching, and re-wetting according to previously assigned method. Restoration was performed employing the Single Bond 2 and Z350XT resin. Clinical follow-up was held after the polishing of the restoration (baseline) and 6 and 12 months of the making of the restoration using the modified USPHS criteria. The restorations were qualitatively analyzed by means of photographs. In the evaluation period, replicas of the restorations were analyzed by SEM. Data were analyzed by statistics using chi-square test (p < 0.05).

Results

After 12 months of clinical evaluation, groups prepared with laser and re-wetting with chlorhexidine and water showed the lowest marginal staining value. There was no statistical difference between the groups for other factors. SEM analysis revealed that a non-expressive amount of restorations showed gaps and irregularities of tooth-restoration interface after 6 and 12 months compared to the baseline.

Conclusion

The restorations performed in laser-prepared cavities, regardless of the re-wetting, presented the best clinical performance over the evaluated period.

Clinical relevance

Laser-prepared teeth, regardless of re-wetting, showed greater resistance to marginal discoloration.
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Metadata
Title
Clinical evaluation of composite restorations in Er:YAG laser-prepared cavities re-wetting with chlorhexidine
Authors
Daniel Galafassi
Camila Scatena
Rodrigo Galo
Fabiana Almeida Curylofo-Zotti
Silmara Aparecida Milori Corona
Maria Cristina Borsatto
Publication date
01-05-2017
Publisher
Springer Berlin Heidelberg
Published in
Clinical Oral Investigations / Issue 4/2017
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-016-1897-x

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