羟基磷灰石和硫酸钙内部基质对矿物三氧化物凝聚体和光固化玻璃离子水门汀封闭能力的影响。
Effect of internal matrices of hydroxyapatite and calcium sulfate on the sealing ability of mineral trioxide aggregate and light cured glass ionomer cement.
作者信息
Taneja Sonali, Kumari Manju
机构信息
Department of Conservative Dentistry and Endodontics, ITS-CDSR, Muradnagar, Uttar Pradesh, India.
出版信息
J Conserv Dent. 2011 Jan;14(1):6-9. doi: 10.4103/0972-0707.80722.
OBJECTIVE
The present study was undertaken to evaluate the effect of hydroxyapatite (HA) and calcium sulfate (CS) on the sealing ability of mineral trioxide aggregate (MTA) and light cured glass ionomer cement (LC GIC) when used to repair furcation perforations.
MATERIALS AND METHODS
The study was conducted on 70 human molars. Sixty teeth with furcal perforations were randomly divided into six groups of 10 teeth each and repaired with MTA or LC GIC either alone or over an internal matrix, i.e., CS or HA. Access openings were filled with composite resin. Five teeth with unrepaired perforations were used as positive controls and five teeth without perforations were used as negative controls. The teeth were immersed in a solution of 2% methylene blue dye for 2 weeks. The samples were then sectioned and evaluated for linear dye leakage and analyzed statistically.
RESULTS
MTA showed the best sealing ability followed by LC GIC, MTA + CS, MTA + HA, LC GIC + CS and LC GIC + HA.
CONCLUSION
Neither of the two internal matrices improved the sealing ability of the repair materials used.
目的
本研究旨在评估羟基磷灰石（HA）和硫酸钙（CS）用于修复根分叉穿孔时，对三氧化矿物凝聚体（MTA）和光固化玻璃离子水门汀（LC GIC）封闭能力的影响。
材料与方法
对70颗人类磨牙进行研究。将60颗有根分叉穿孔的牙齿随机分为6组，每组10颗，分别单独使用MTA或LC GIC进行修复，或在内部基质（即CS或HA）上使用MTA或LC GIC进行修复。髓腔入口用复合树脂充填。5颗有未修复穿孔的牙齿用作阳性对照，5颗无穿孔的牙齿用作阴性对照。将牙齿浸泡在2%亚甲蓝染料溶液中2周。然后将样本切片，评估线性染料渗漏情况并进行统计学分析。
结果
MTA显示出最佳的封闭能力，其次是LC GIC、MTA + CS、MTA + HA、LC GIC + CS和LC GIC + HA。
结论
两种内部基质均未提高所用修复材料的封闭能力。
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