使用和不使用内部基质时，MTA用于修复根分叉穿孔的封闭能力的体外评估。
In vitro evaluation of the sealing ability of MTA used for the repair of furcation perforations with and without the use of an internal matrix.
作者信息
Zou Ling, Liu Jun, Yin Shihai, Li Wei, Xie Jun
机构信息
State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2008 Jun;105(6):e61-5. doi: 10.1016/j.tripleo.2008.01.038. Epub 2008 Apr 16.
OBJECTIVE
To evaluate the effect of matrix on mineral trioxide aggregate (MTA) when used to repair furcal perforations.
STUDY DESIGN
Forty-five human molars with furcal perforations were randomly divided into 3 groups and repaired with MTA either alone or over a barrier (calcium sulfate or Collaplug). Eight teeth without perforations provided negative control samples. After assessing repair quality, 1 mol/L glucose solution was used as the tracer to detect the leakage. The concentration of leaked glucose was measured after 1, 2, 4, 7, 15, and 20 days using a glucose oxidase method.
RESULTS
No significant difference in either leakage or overfilling was found between the groups with Collaplug and MTA alone (P > .05). Although no overfilling was detected in the group with calcium sulfate, that group had the most leakage (P < .05).
CONCLUSIONS
Neither of the 2 internal matrices improved the sealing ability and reduced the incidence of overfilling simultaneously.
目的
评估基质对用于修复根分叉穿孔的三氧化矿物凝聚体（MTA）的影响。
研究设计
将45颗有根分叉穿孔的人类磨牙随机分为3组，分别单独使用MTA或在屏障物（硫酸钙或可吸收性明胶海绵）上使用MTA进行修复。8颗无穿孔的牙齿作为阴性对照样本。在评估修复质量后，使用1 mol/L葡萄糖溶液作为示踪剂检测渗漏情况。在1、2、4、7、15和20天后，采用葡萄糖氧化酶法测量渗漏葡萄糖的浓度。
结果
使用可吸收性明胶海绵组与单独使用MTA组在渗漏或超充方面均无显著差异（P > .05）。虽然硫酸钙组未检测到超充情况，但该组渗漏最多（P < .05）。
结论
两种内部基质均不能同时提高封闭能力并降低超充发生率。
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