用于直接盖髓的MM-MTA：与ProRoot MTA在大鼠磨牙中的组织学比较
MM-MTA for direct pulp capping: a histologic comparison with ProRoot MTA in rat molars.
作者信息
Khalil Issam Tanios, Sarkis Tony, Naaman Alfred
机构信息
Assistant Professor, Department of Endodontics, Saint Joseph University, Lebanon, e-mail:
Private Practice, Department of Endodontics, Lebanon.
出版信息
J Contemp Dent Pract. 2013 Nov 1;14(6):1019-23. doi: 10.5005/jp-journals-10024-1443.
AIM
To compare the histomorphological response of rat dental pulps capped with MM-MTA and ProRoot MTA at 1, 2 and 4 weeks postoperatively.
MATERIALS AND METHODS
Direct pulp capping with MM-MTA and ProRoot MTA, overlaid with light-cured composite resin, was performed on right and left maxillary first molars of 20 Wistar rats. Animals were killed at 1, 2 and 4 weeks postoperatively. Biopsy samples were stained and viewed by light microscopy to determine dentin bridge formation. Data were statistically evaluated with the Kruskal-Wallis test (p < 0.05).
RESULTS
Absence of dentin bridge formation at 1 week, partial dentin bridge formation at 2 weeks and complete dentin bridge formation at 4 weeks are observed with MM-MTA and ProRoot MTA. The results showed no statistically significant difference between both materials at 4 weeks.
CONCLUSION
Both materials produced similar responses in the pulp when used for pulp capping in intact, caries-free molars of rats.
目的
比较术后1周、2周和4周时，用MM-MTA和ProRoot MTA覆盖大鼠牙髓后的组织形态学反应。
材料与方法
对20只Wistar大鼠的左右上颌第一磨牙进行直接盖髓，分别用MM-MTA和ProRoot MTA覆盖，再用光固化复合树脂覆盖。术后1周、2周和4周处死动物。取活检样本进行染色，通过光学显微镜观察以确定牙本质桥的形成情况。数据采用Kruskal-Wallis检验进行统计学评估（p < 0.05）。
结果
MM-MTA和ProRoot MTA均显示，术后1周未形成牙本质桥，2周形成部分牙本质桥，4周形成完整牙本质桥。结果显示，4周时两种材料之间无统计学显著差异。
结论
在大鼠完整、无龋的磨牙中用于盖髓时，两种材料在牙髓中产生的反应相似。
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