Duarte Marco Antonio Hungaro, Martins Catharina Sajovic, de Oliveira Cardoso Demarchi Ana Claudia, de Godoy Laerte Fiori, Kuga Milton Carlos, Yamashita José Carlos
Sagrado Coracao University, Santa Fé do Sul, Brazil.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Jul;104(1):e66-9. doi: 10.1016/j.tripleo.2007.01.024. Epub 2007 May 11.
To evaluate the release of calcium and hydroxide ions from the pulp-capping materials Hydro C, NuCap, Life, and Ultrablend Plus.
The materials were manipulated and inserted into tubes measuring 1 cm in length and 1 mm in diameter. The filled tubes were individually immersed in flasks containing 10 mL deionized water. The tubes were removed from the flasks after 3, 24, 72, and 168 hours, and the release of hydroxide and calcium ions was measured with a pH-meter and an atomic absorption spectrophotometer, respectively. The data were compared by analysis of variance and Tukey test.
The results showed that Ultrablend Plus provided the greatest release of calcium ions, with a significant difference observed between Life and Ultrablend after 3 hours. Evaluation after 24, 72, and 168 hours showed a significant difference between Ultrablend and the other materials. No hydroxide release was observed from the Ultrablend cement at any time period. After 3 hours, significant differences were observed between Hydro C and the Life and Ultrablend materials and between NuCap and the Life and Ultrablend materials. After 24 hours, significant differences were observed between the NuCap agent and the other materials. After 72 hours, a significant difference was noted only between NuCap and Ultrablend, whereas after 168 hours a significant difference was observed between NuCap and the Hydro C and Ultrablend materials.
All materials released calcium and hydroxide ions, except Ultrablend Plus which did not show any release of hydroxide ions.
评估牙髓盖髓材料Hydro C、NuCap、Life和Ultrablend Plus中钙离子和氢氧根离子的释放情况。
将材料进行处理并插入长度为1厘米、直径为1毫米的试管中。将装满材料的试管分别浸入装有10毫升去离子水的烧瓶中。在3小时、24小时、72小时和168小时后从烧瓶中取出试管，分别用pH计和原子吸收分光光度计测量氢氧根离子和钙离子的释放量。通过方差分析和Tukey检验对数据进行比较。
结果显示，Ultrablend Plus释放的钙离子最多，在3小时后，Life和Ultrablend之间观察到显著差异。在24小时、72小时和168小时后的评估显示，Ultrablend与其他材料之间存在显著差异。在任何时间段内，Ultrablend水泥均未观察到氢氧根离子的释放。3小时后，Hydro C与Life和Ultrablend材料之间以及NuCap与Life和Ultrablend材料之间观察到显著差异。24小时后，NuCap制剂与其他材料之间观察到显著差异。72小时后，仅在NuCap和Ultrablend之间观察到显著差异，而在168小时后，NuCap与Hydro C和Ultrablend材料之间观察到显著差异。
除Ultrablend Plus未显示任何氢氧根离子释放外，所有材料均释放钙离子和氢氧根离子。
