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- Title
ELECTRON-MICROSCOPIC STUDY UPON ULTRASTRUCTURAL CHANGES OF HUMAN DENTAL PULP, CAPPED WITH COMPOUNDS BASED ON MTA.
- Authors
Stefanescu, Teodora; Craciun, C.
- Abstract
Though since it's appearance on market in 1993 hundreds of studies and experiments were made regarding on it's chemical and physical properties, sealing abilitiy, antibacterial activity, leakage, and biocompatibility of MTA, transmission electron electronmicroscop (TEM) studies made on dental pulp, are very rare. Our ultrastructural studies performed by us in this research focused primarily on highlighting the changes happening at cellular and sub-cellular level in dental pulp obtain from human teeth whose caries had been treated with MTA (Mineral Trioxide Aggregate), as compared to pulp originating from healthy teeth. For the investigations there have been used teeth that had been extracted for orthodontic purposes 6, 14 and 30 days after treatment of caries with MTA, as well as a healthy premolar extracted for the same purposes, which served as a benchmark. After 30 days, the dentin plate is almost entirely rebuilt, though a slight alteration of the fibroblasts is still noticeable. They are in an intense synthesis activity, evidenced by dentin plate formation. The vascular and nerve infrastructure is almost completely rebuilt, functioning at the necessary parameters to regenerate the pulp tissue. It seems that MTA is the ideal material for direct capping in permanent teeth, compared to currently used materials, it being a bioactive material that has the ability to create an ideal environment for healing. Our study can confirm the presence and formation of the collagen matrix in the predentin area, described by some authors. We cannot confirm other studies which describes an inflammation free pulp, a week after capping with MTA, given the fact that we found inflammatory elements even after 2 weeks. Meanwhile, we can confirm the studies which describes the dentine plate formation after 60 days, emphasizing that we have shown the same thing, just 30 days after capping.
- Subjects
DENTAL pulp capping; ELECTRON microscopy; ULTRASTRUCTURE (Biology); ANTIBACTERIAL agents; BIOCOMPATIBILITY; TRANSMISSION electron microscopy
- Publication
Annals of the Romanian Society for Cell Biology, 2011, Vol 16, Issue 2, p54
- ISSN
2067-3019
- Publication type
Article