Influence of type of bur and acid etching on dentin hydraulic conductance.

Cristian Bersezio, Javier Martín, Gloria Xaus, Patricio Vildósola, Osmir B. Oliveira, Gustavo Moncada, Eduardo Fernández

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The aim of this study was to compare ex vivo filtration rate (hydraulic conductance) in human dentin discs mechanically treated with diamond and carbide burs of different grain size with or without acid etching. Method: 60 healthy third molars, recently extracted from patients aged 18-30 years, were cleaned, disinfected (0.1% thymol) and embedded in epoxy resin blocks. Dentin discs were obtained by cutting the occlusal surface with cylindrical rotary instruments, forming nine groups containing 12 specimens each: 1: fine grain (FG); 2: medium grain (MG); 3: coarse grain (CG); 4: carbide (C) burs; 5: FG with acid etching (AE); 6: MG with AE; 7: CG with AE; 8: C with AE; 9: only AE. Hydraulic conductance was determined in the experimental model under constant pressure of 200mm H2O. No difference in hydraulic conductance was observed among dentin discs treated with different types of burs (p = 0.5). Differences were found in the hydraulic conductance of etched and non-etched dentin discs (p < 0.001). The type of mechanical bur treatment does not affect dentin hydraulic conductance. Acid etching significantly increases dentin hydraulic conductance.

Original languageEnglish
Pages (from-to)131-137
Number of pages7
JournalActa odontológica latinoamericana : AOL
Volume26
Issue number3
Publication statusPublished - 1 Jan 2013

ASJC Scopus subject areas

  • General Medicine

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