Demiriz Levent, Koçak Mustafa Murat, Koçak Sibel, Sağlam Baran Can, Türker Sevinç Aktemur
Department of Pediatric Dentistry, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey.
Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey.
J Conserv Dent. 2016 May-Jun;19(3):220-4. doi: 10.4103/0972-0707.181936.
An ideal root canal obturation requires a complete dentinal wall adaptation of sealer and Gutta-percha combinations without any gap formations.
The aim of the study was to evaluate the dentinal wall adaptation ability of MTA Fillapex root canal sealer using stereo electron microscope (SEM).
Twenty-four, single-rooted, human maxillary incisor teeth were used. All canals were prepared with a rotary nickel-titanium (Ni-Ti) instrument to a size F3 file. Teeth divided into two equal groups and one of the experimental groups was filled with AH Plus, and the other group was filled with MTA Fillapex using Gutta-percha single cone as a core material. The roots were prepared for SEM evaluation, and serial scanning electron photomicrographs were taken at ×50, ×100, ×500, and ×1000 magnifications. The gaps between the root canal sealer and canal walls were detected and measured in coronal, middle, and apical thirds. For each section, the highest value among the detected gap formations was recorded.
Mann-Whitney U-test, Freidman, and Wilcoxon tests were used.
The statistical analysis showed no significant difference between two sealers in terms of gap formation (P > 0.05).
MTA Fillapex has a similar dentinal wall adaptation ability as AH Plus does.
理想的根管充填需要封闭剂与牙胶组合能完全贴合牙本质壁，无任何间隙形成。
本研究旨在使用立体电子显微镜（SEM）评估MTA Fillapex根管封闭剂对牙本质壁的贴合能力。
使用24颗人上颌单根切牙。所有根管均用旋转镍钛（Ni-Ti）器械预备至F3锉的尺寸。牙齿分为两组，每组数量相等，其中一个试验组用AH Plus充填，另一组用MTA Fillapex充填，以牙胶单尖作为核心材料。对牙根进行SEM评估准备，并在50倍、100倍、500倍和1000倍放大倍数下拍摄系列扫描电子显微照片。在冠方、中部和根尖三分之一处检测并测量根管封闭剂与根管壁之间的间隙。对于每个切片，记录检测到的间隙形成中的最高值。
采用曼-惠特尼U检验、弗里德曼检验和威尔科克森检验。
统计分析表明，两种封闭剂在间隙形成方面无显著差异（P>0.05）。
MTA Fillapex与AH Plus具有相似的牙本质壁贴合能力。
