In vivo sealing ability of calcium hydroxide-containing root canal sealers.

F Barnett, M Trope, J Rooney, L Tronstad
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引用次数: 22

Abstract

It was the purpose of this study to determine the sealing ability of 2 commercially available calcium hydroxide-containing root canal sealers, CRCS and Sealapex. One hundred sixty single-rooted human teeth were used. The clinical crowns were removed and the roots were cleaned mechanically and by immersion for 24 h in 5% sodium hypochlorite. The root canals were then instrumented to size 80 at the apical foramen and the roots were sterilized by gamma-radiation. Under aseptic conditions the root canals were filled with a gutta-percha master cone size 70 and Sealapex (48 roots), CRCS (48 roots), and a zinc oxide-eugenol type sealer, Roth 801 (50 roots). The coronal aspects of the root canals were then sealed with zinc oxide-eugenol cement. In order to bring the roots and root filling materials in contact with tissue and tissue fluids, the roots were implanted subcutaneously in rabbits for 90 days and 1 year. Leakage as demonstrated by penetration of India ink was evaluated using a stereomicroscope. The best results were obtained with CRCS. Significantly less leakage occurred with both calcium hydroxide-containing sealers than with the traditional zinc oxide-eugenol sealer.

含氢氧化钙根管封闭剂的体内封闭能力。
本研究的目的是确定两种市售的含氢氧化钙根管密封剂CRCS和Sealapex的密封能力。使用了160颗单根人类牙齿。去除临床冠,机械清洁根,并在5%次氯酸钠中浸泡24小时。然后在根尖孔处测量根管大小至80,并用伽马射线对根进行消毒。在无菌条件下,根管填充胶-柏胶主锥尺寸为70和Sealapex(48根),CRCS(48根)和氧化锌-丁香酚型密封剂Roth 801(50根)。然后用氧化锌-丁香酚胶合剂封闭根管的冠状面。为了使根和根填充材料与组织和组织液接触,将根在家兔皮下植入90天和1年。渗漏表现为渗透印度墨水评估使用立体显微镜。用CRCS法测定效果最好。与传统的氧化锌-丁香酚密封剂相比,含氢氧化钙密封剂的泄漏发生率明显降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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