Mehrvarzfar Payman, Dahi-Taleghani Afsaneh, Saghiri Mohammad Ali, Karamifar Kasra, Shababi Behnam, Behnia Ali
Department of Endodontics, Dental School, Islamic Azad University (IAU), Tehran, Iran.
Saudi Dent J. 2010 Jul;22(3):119-24. doi: 10.1016/j.sdentj.2010.04.004. Epub 2010 Apr 18.
The objective of this in vitro was to assess the sealing ability of MTA, Geristore®, and amalgam with and without Bioglass as a matrix used to repair furcation perforations in mandibular molars by using dye penetration.
One hundred mandibular molars were randomly divided into six experimental groups. Five teeth with perforation were used as positive control while five teeth without perforation were used as negative control group. Furcal perforations were made in the teeth. Perforations were repaired with amalgam in group 1, amalgam and Bioglass in group 2, MTA in group 3, MTA and Bioglass in group 4, Geristore® in group 5, and Geristore® and Bioglass in group 6. All repairing materials were allowed to set for 72 h. Leakage at the repaired sites was then evaluated using dye penetration and clearing technique under stereomicroscope.
The perforations repaired with MTA and Geristore® leaked significantly less than amalgam (p = 0.000). Bioglass reduced sealing ability of MTA and Geristore® significantly (p = 0.000, p = 0.019), while reduced the sealing ability of amalgam insignificantly (p = 0.78).
MTA and Geristore® have shown acceptable sealing ability in furcal perforation in comparison to amalgam while Bioglass as a matrix beneath them has reduced their sealing ability.
本体外研究的目的是通过染料渗透法评估使用MTA、Geristore®以及含和不含生物玻璃作为基质的汞合金修复下颌磨牙根分叉穿孔的封闭能力。
将100颗下颌磨牙随机分为6个实验组。5颗有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组。在牙齿上制作根分叉穿孔。第1组用汞合金修复穿孔，第2组用汞合金和生物玻璃修复，第3组用MTA修复，第4组用MTA和生物玻璃修复，第5组用Geristore®修复，第6组用Geristore®和生物玻璃修复。所有修复材料均放置72小时。然后在体视显微镜下使用染料渗透和清除技术评估修复部位的渗漏情况。
用MTA和Geristore®修复的穿孔渗漏明显少于汞合金（p = 0.000）。生物玻璃显著降低了MTA和Geristore®的封闭能力（p = 0.000，p = 0.019），而对汞合金封闭能力的降低不显著（p = 0.78）。
与汞合金相比，MTA和Geristore®在根分叉穿孔中显示出可接受的封闭能力，而它们下方作为基质的生物玻璃降低了它们的封闭能力。
