A comparative leakage study on Er,Cr:YSGG laser- and bur- prepared Class V cavities restored with a low-shrinkage composite using different filling techniques

Authors

  • Fernanda Strohmayer Sarabia USP
  • Andréa Dias Neves Lago UFMG
  • Sérgio Brossi Botta UNINOVE
  • Cynthia Soares de Azevedo USP
  • Narciso Garone-Netto USP
  • Adriana Bona Matos USP

DOI:

https://doi.org/10.20396/bjos.v12i2.8641085

Keywords:

Dental leakage, Lasers, polymerization, Composite resins, Tooth preparation

Abstract

Aim: To evaluate the leakage on Er,Cr:YSGG laser- and bur- prepared Class V cavities restored with a silorane-based composite resin using different insertion techniques Methods: 40 cavities were outlined according to: the type of instrument [Er,Cr:YSGG laser (3.0 W power, energy per pulse of 150 mJ, fluence of 53.57J/cm2 , pulse duration of 140-200 µs, 20 Hz repetition rate and 55/65% air/water spray) or diamond bur]; and the type of filling technique (bulk increment or incremental). Four experimental groups were obtained (n=10): G1- diamond bur (DB) and incremental (I); G2- DB and bulk increment (BI); G3- Er,Cr:YSGG and I; and G4- Er,Cr:YSGG and BI. Specimens were restored with a silorane-based composite resin (Filtek P90, 3M/ESPE), subjected to 500 thermal cycles, sealed, infiltrated with 2% (w/v) methylene blue and sectioned in halves. Specimen analysis was scored based on a scale. Statistical analyses were done using the Kruskal-Wallis and Student Newman-Keuls tests (α=0.05). Results: Statistically significant differences were observed between G2 and G4 (p=0.003) and between G1 and G2 (p=0.028). The filling technique did not influence the pattern of dye leakage in the cavity walls (p=0.151). Conclusions: Less leakage was observed when Er,Cr:YSGG cavities were restored with silorane-based composite resin, using the bulk increment technique. Nevertheless, cavities done using diamond bur have less leakage only when incrementally restored.

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Author Biographies

Fernanda Strohmayer Sarabia, USP

Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), São Paulo, SP.

Andréa Dias Neves Lago, UFMG

Department of Operative Dentistry, School of Dentistry, University of Minas Gerais (UFMG), Belo Horizonte, MG.

Sérgio Brossi Botta, UNINOVE

Department of Operative Dentistry, School of Dentistry, Nove de Julho University (UNINOVE), São Paulo, SP.

Cynthia Soares de Azevedo, USP

Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), São Paulo, SP.

Narciso Garone-Netto, USP

Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), São Paulo, SP.

Adriana Bona Matos, USP

Department of Operative Dentistry, School of Dentistry, University of São Paulo (USP), São Paulo, SP.

Published

2015-10-16

How to Cite

1.
Sarabia FS, Lago ADN, Botta SB, Azevedo CS de, Garone-Netto N, Matos AB. A comparative leakage study on Er,Cr:YSGG laser- and bur- prepared Class V cavities restored with a low-shrinkage composite using different filling techniques. Braz. J. Oral Sci. [Internet]. 2015 Oct. 16 [cited 2022 Dec. 8];12(2):119-24. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641085

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