Hagemeier M K, Cooley R L, Hicks J L
USAF Hospital Bergstrom, Texas.
J Esthet Dent. 1990 Nov-Dec;2(6):166-9. doi: 10.1111/j.1708-8240.1990.tb00639.x.
This study evaluated the ability of five interim endodontic restorative materials to resist microleakage. Sixty extracted human molars were prepared for initial endodontic therapy via occlusal access preparations. After removal of the pulpal tissue, a cotton pellet was placed in the pulp chamber. The access preparations were sealed with one of the following materials or combinations: TERM, Cavit, IRM, Ketac-Silver, or a IRM-Cavit "sandwich" restoration. The specimens were thermocycled for 24 hours (800 cycles), immersed in methylene blue dye for 4 hours, sectioned, and evaluated under a microscope for microleakage. TERM, Cavit, and the IRM-Cavit "sandwich" had virtually no microleakage, while Ketac-Silver and IRM exhibited gross microleakage.
本研究评估了五种临时牙髓修复材料抵抗微渗漏的能力。通过咬合面开髓预备，为60颗拔除的人磨牙进行初始牙髓治疗。去除牙髓组织后，在髓室内放置一个棉球。开髓预备用以下材料或材料组合进行密封：TERM、Cavit、IRM、Ketac-Silver或IRM-Cavit“三明治”修复体。将标本进行24小时（800个循环）的热循环，浸入亚甲蓝染料中4小时，切片，并在显微镜下评估微渗漏情况。TERM、Cavit和IRM-Cavit“三明治”几乎没有微渗漏，而Ketac-Silver和IRM则表现出严重的微渗漏。
