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Original Research

Open Access

Hybrid Layer Width after Conventional Diamond, Carbide and Ultra-Sound CVD Burs

  • Pereira Nogueira P1
  • Cavalli V1
  • Liporoni PCS1
  • do Rego MA1,*,

1University of Taubaté, Taubaté, São Paulo, Brazil

DOI: 10.17796/jcpd.37.1.c86g515t1q576452 Vol.37,Issue 1,January 2013 pp.53-58

Published: 01 January 2013

*Corresponding Author(s): do Rego MA E-mail: marcosrego@uol.com.br

Abstract

Objectives: The aim of the present study was to evaluate hybrid layer thickness of primary molars sectioned with diamond, carbide and ultrasonic CVD burs. Study Design: The occlusal enamel surfaces of ten molars were removed and superficial dentin was exposed. Three standardized cavities were prepared at mesial, central and distal exposed dentin with diamond, carbide and ultrasonic CVD burs, respectively. A self-etching adhesive system (Adhese, Ivoclar/Vivadent) was applied to prepared cavities and composite resin Z100 (3M/ESPE) was inserted according to manufacturers’ instructions to hybridized dentin. Samples were lightcured and the crown was sectioned mesio-distally dividing the restored cavities in two halves which were observed under scanning electron microscopy (SEM), in order to quantitatively evaluate hybrid layer thickness (µm). Three repeated measures were performed at mesial, central and distal sites and mean values obtained were submitted to one-way analysis of variance (ANOVA). Results: Data (mean ± sd) obtained were (µm): 2.69 (0.44), 3.38 (1.23) and 2.72 (1.18) for diamond, carbide and CVD burs, respectively. No differences were observed among groups (p ≯ 0.05). The adhesive systems promoted mechanical retention, uniform and continuous hybrid layer and resin tags formation at all dentin sites for all instruments tested. Conclusion: The results suggest that the minimally invasive cavities prepared with diamond, carbide and CVD for ultrasound, promoted hybrid layer formation with a similar thickness regardless the bur used.

Keywords

primary teeth, adhesive system, hybrid layer, CVD diamond burs

Cite and Share

Pereira Nogueira P,Cavalli V,Liporoni PCS,do Rego MA. Hybrid Layer Width after Conventional Diamond, Carbide and Ultra-Sound CVD Burs. Journal of Clinical Pediatric Dentistry. 2013. 37(1);53-58.

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