Abstract
Calcium hydroxide has been used widely as a vital pulpotomy agent for primary and immature permanent teeth in pediatric dentistry. When this paste is placed over the amputated pulp, it is known to promote healing by formation of the dentin bridge. In normal clinical application, however, it is necessary to mix it with calcium hydroxide powder and sterlized water and to prepare sterlized instruments. This procedure is complicated for both the operator and the assistant. Therefore, ready-made calcium hydroxide paste, or a one-paste type, was newly designed.
The purpose of present study was to investigate the formation of the dentin barrier in the immature permanent teeth of young dogs with the one-paste type calcium hydroxide paste. The dogs were sacrificed at 1 month after the pulpotomy. The serial sections were obtained and observed histopathologically. The formation of the dentin bridge was observed, and the findings were the same as those of only the calcium hydroxide used. There were also no findings of damaged pulp cell under the dentin bridge. This result suggests that the one-paste type calcium hydroxide paste is useful for pulpotomy.
