RetroMTA is hydraulic bioceramic material for repair and vital pulp therapy. portland cement is not used as a raw material. RetroMTA is a powder consisting of fine, hydrophilic particles that set in the presence of water and form a strong impermeable barrier. It contains hydraulic calcium zirconia complex as a contrast media. setting time is 150 seconds. It has no discoloration even in the blood contamination. Therefore it is a ideal for aesthetic repair material. It contains no heavy metals. It has no toxicity to cells with in 48 hours. This means it is a ideal substance for vital pulp therapy.
(pulp capping, pulpotomy and pulpectomy)
In vivo condition, initial Ph is up tp 12.5 and down tp 7.8 ~ 8.0 in 4 weeks.
Ex vivo study shows it has the high potential for biomineralization.
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