von Fraunhofer J A, Argyropoulos D C
Dent Mater. 1990 Jan;6(1):51-5. doi: 10.1016/0109-5641(90)90045-g.
The physical properties of periodontal dressing materials, two chemically curing and one photocured, were examined. A modified penetrometer test showed that COEpak and PerioCare were similar in behavior, setting at 10-15 min post-mixing. Barricaid required 30 s of minimum light exposure to achieve curing. All materials absorbed water; both COEpak and PerioCare behaved similarly at 23 degrees C, but PerioCare absorbed far more water at 37 degrees C. Increased light exposure had little effect on Barricaid water sorption or solubility. There was no difference (p greater than 0.05) in the solubility of each material when immersed at 23 and 37 degrees C. When immersed in 0.9% KCl solution, Barricaid had no effect on solution conductivity or pH. COEpak and PerioCare increased conductivity slightly and the pH markedly. The adhesion of COEpak to a single tooth at one h was about 7 kg, but this decreased to about 6.5 kg at 24 h and to 5 kg at seven d. The adhesion of PerioCare was 2 kg at one h and 8.5 kg at 24 h, but it decreased to 7.5 kg at seven d. The adhesion of Barricaid was about 5 kg at one h, but it decreased to 3.5 kg at 24 h and to ca. 1.5 kg at seven d. The adhesion of Barricaid appears to involve mechanical locking and differs from that of COEpak and PerioCare.
对两种化学固化和一种光固化的牙周敷料材料的物理性能进行了检测。改良针入度计测试表明，COEpak和PerioCare的性能相似，混合后10 - 15分钟凝固。Barricaid需要至少30秒的光照才能固化。所有材料都吸水；COEpak和PerioCare在23摄氏度时表现相似，但PerioCare在37摄氏度时吸水得多得多。增加光照对Barricaid的吸水率或溶解度影响很小。每种材料在23摄氏度和37摄氏度下浸泡时的溶解度没有差异（p大于0.05）。当浸泡在0.9%氯化钾溶液中时，Barricaid对溶液的电导率或pH值没有影响。COEpak和PerioCare会使电导率略有增加，pH值显著增加。COEpak在1小时时对单颗牙的黏附力约为7千克，但在24小时时降至约6.5千克，在7天时降至5千克。PerioCare在1小时时的黏附力为2千克，在24小时时为8.5千克，但在7天时降至7.5千克。Barricaid在1小时时的黏附力约为5千克，但在24小时时降至3.5千克，在7天时降至约1.5千克。Barricaid的黏附似乎涉及机械锁定，与COEpak和PerioCare不同。
