Abstract
This study examined the effects of calcium-depleting endodontic irrigants, ethylenediamine tetra-acetic acid (EDTA) and BioPure MTAD, on the dissolution, surface characteristics, and ultrastructural characteristics of white mineral trioxide aggregate (MTA). The latter was mixed in a 0.35 water-cement ratio, condensed into cylindrical wells created in Plexiglas platforms, and allowed to harden completely before initial treatment with 1.3% NaOCl and final treatments with either 17% EDTA for 5 minutes, or BioPure MTAD for 1, 3, or 5 minutes. Analysis of the mean depths of material removed using three-dimensional profilometry revealed significantly more material removed by BioPure MTAD. Although these minor depth changes (<10 μm) are unlikely to cause clinical concern, the BioPure MTAD-treated MTA surfaces exhibited higher surface roughness and with more calcium extracted when compared with EDTA treatment. Decomposition of particle-binding hydration phases by acid corrosion raises potential concern on the strength and sealing properties of MTA-repaired perforations following final irrigation by BioPure MTAD.
Original language | English (US) |
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Pages (from-to) | 463-467 |
Number of pages | 5 |
Journal | Journal of endodontics |
Volume | 33 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2007 |
Keywords
- 3-D profilometry
- BioPure MTAD
- EDTA
- atomic absorption spectroscopy
- dissolution
- mineral trioxide aggregate
- scanning electron microscopy
- surface corrosion
ASJC Scopus subject areas
- Dentistry(all)