Dr. Lin is an assistant professor of Pediatric Dentistry, University of Alabama at Birmingham, Birmingham, Ala., USA.
Dr. Zhang is a professor of Pediatric Dentistry, University of Alabama at Birmingham, Birmingham, Ala., USA.
Pediatr Dent. 2022 May 15;44(3):207-212.
The purpose of this study was to compare the chemical and physical properties of eight contemporary direct pulp capping materials. Materials included: calcium hydroxide-based (Dycal, Lime-Lite, and Ultra-Blend plus), bioceramic-based (MTA Angelus, Biodentine, TheraCal LC, Ceramir Protect LC), and resin ionomer-based materials (Bio-Cap). Calcium release and pH changes were measured after one, seven, 28, and 90 days in 36.8 degrees Celsius of deionized water. Water sorption and solubility were calculated with weight loss after 90 days. Biodentine (965.5 ppm) and MTA Angelus (921.2 ppm) released significantly more cumulative calcium ions (P<0.05), followed by Ceramir Protect LC (450.8 ppm) and Dycal (268.1 ppm); Lime-Lite had the least amount of calcium ions. After 90 days, Biodentine and MTA Angelus showed significantly higher pH (P<0.05), while Bio-Cap and Lime-Lite had limited effects in raising the pH to alkaline. Dycal presented the most weight loss (26 percent, P<0.05) after 90 days. Biodentine and MTA Angelus demonstrated more favorable in vitro characteristics for clinical pulp capping purposes, while Lime-Lite had no effect in releasing calcium ions and limited influence in raising pH value.
本研究旨在比较八种当代直接盖髓材料的化学和物理性能。材料包括：氢氧化钙基（Dycal、Lime-Lite 和 Ultra-Blend plus）、生物陶瓷基（MTA Angelus、Biodentine、TheraCal LC、Ceramir Protect LC）和树脂离子体基材料（Bio-Cap）。将每种材料分别置于 36.8°C 的去离子水中，在第 1、7、28 和 90 天测量钙释放和 pH 值变化。在 90 天后通过重量损失计算吸水率和溶解度。Biodentine（965.5 ppm）和 MTA Angelus（921.2 ppm）释放的钙离子量明显更多（P<0.05），其次是 Ceramir Protect LC（450.8 ppm）和 Dycal（268.1 ppm）；Lime-Lite 释放的钙离子最少。90 天后，Biodentine 和 MTA Angelus 显示出明显更高的 pH 值（P<0.05），而 Bio-Cap 和 Lime-Lite 对提高 pH 值至碱性的影响有限。90 天后 Dycal 的重量损失最大（26%，P<0.05）。Biodentine 和 MTA Angelus 在临床盖髓方面表现出更有利的体外特性，而 Lime-Lite 没有释放钙离子的作用，对提高 pH 值的影响有限。
