树脂类与牙胶类根管充填材料：体外模型系统中对细菌渗漏的影响

Resin-based versus gutta-percha-based root canal obturation: influence on bacterial leakage in an in vitro model system.

作者信息

Williamson Anne E, Marker Kristy L, Drake David R, Dawson Deborah V, Walton Richard E

机构信息

Department of Endodontics, University of Iowa College of Dentistry, Iowa City, IA 52241, USA.

出版信息

Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Aug;108(2):292-6. doi: 10.1016/j.tripleo.2009.01.043. Epub 2009 May 17.

DOI:10.1016/j.tripleo.2009.01.043

PMID:19451008

Abstract

OBJECTIVE

This study evaluated the ability of a resin-based system (Resilon/Epiphany) and gutta-percha/sealer with warm vertical or cold lateral compaction to prevent coronal leakage.

STUDY DESIGN

A polymicrobial suspension in a dual-chamber model was used. Seventy extracted maxillary incisors were prepared, divided into 4 groups, and obturated: Group 1, lateral compaction/gutta-percha/AH Plus; Group 2, lateral compaction/Resilon; Group 3, continuous wave compaction/gutta-percha/AH Plus; Group 4, continuous wave compaction/Resilon. Upper chambers held a mixed suspension of endodontic pathogens. Apices were suspended in the lower chambers. Leakage was determined daily for 40 days and evaluated for turbidity. Data were analyzed using survival analysis; log-rank test was used to analyze differences in time to leakage.

RESULTS

Median time to leakage: 16, 15, 11, and 25 days for Groups 1 to 4 respectively (P = .93, log-rank test).

CONCLUSION

No difference in time to leakage among the 4 treatment groups existed.

摘要

目的

本研究评估了树脂基系统（Resilon/Epiphany）以及采用热垂直加压或冷侧向加压技术的牙胶/封闭剂防止冠部微渗漏的能力。

研究设计

采用双腔模型中的多微生物悬液。选取70颗拔除的上颌切牙进行预备，分为4组并进行根管充填：第1组，侧向加压/牙胶/AH Plus；第2组，侧向加压/Resilon；第3组，连续波加压/牙胶/AH Plus；第4组，连续波加压/Resilon。上腔装有牙髓病原体的混合悬液。根尖置于下腔。持续40天每天测定微渗漏情况并评估浊度。采用生存分析对数据进行分析；对数秩检验用于分析渗漏时间的差异。