丙二醇对三氧化矿物凝聚体和富钙混合水泥根尖屏障封闭能力的影响。
Effect of Propylene Glycol on the Sealing Ability of Mineral Trioxide Aggregate and Calcium-Enriched Mixture Cement Apical Barriers.
作者信息
Adl Alireza, Sobhnamayan Fereshte, Shojaee Nooshin Sadat, Tahmasebi Azad Fateme, Bahmani Mohsen
机构信息
Department of Endodontics, Biomaterials Research Center, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran.
Department of Endodontics, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran.
出版信息
Iran Endod J. 2017 Summer;12(3):318-322. doi: 10.22037/iej.v12i3.15670.
INTRODUCTION
Propylene glycol (PG) improves the handling, physical, and chemical properties of mineral trioxide aggregate (MTA). This study aimed to evaluate the effect of PG on the sealing ability of MTA and calcium-enriched mixture (CEM) apical barriers.
METHODS AND MATERIALS
A total of 70 extracted human maxillary single-rooted teeth were prepared using ProTaper rotary system. The apical 3 mm of the root tips were resected and the root canals were enlarged with Peeso reamers up to #4, to create open apex teeth. The teeth were then randomly divided into four experimental (=15) and two control (=5) groups. Group1: MTA+ MTA liquid, group2; MTA+MTA liquid (80%) + PG (20%), group3; CEM+CEM liquid, group4; CEM+ liquid (80%) + PG (20%). Cements were mixed with their respective mixing agents and a 4-mm thick apical plug was fabricated. The microleakage was measured on day 1, 3, 7 and 21 using a fluid filtration technique. The repeated measures ANOVA and Sidak test were used to analyze the data.
RESULTS
All experimental groups demonstrated various amounts of microleakage. No significant difference was found between MTA and CEM cement (=0.193), regardless of time and liquid components. There was no significant difference was observed between liquids (=0.312) in all time intervals. The rate of microleakage decreased over time and a significant differences was observed between all intervals (<0.05), except 3-7 and 7-21 (=0.190) days.
CONCLUSION
PG demonstrated neither a positive nor a negative effect on the sealing ability of Angelus MTA and CEM cement.
引言
丙二醇（PG）可改善三氧化矿物凝聚体（MTA）的操作性能、物理和化学性质。本研究旨在评估PG对MTA和富钙混合物（CEM）根尖屏障封闭能力的影响。
方法和材料
使用ProTaper旋转系统对70颗拔除的人上颌单根牙进行预备。切除根尖3mm，并用Peeso扩孔钻将根管扩大至4号，以形成根尖开放的牙齿。然后将牙齿随机分为四个实验组（每组15颗）和两个对照组（每组5颗）。第1组：MTA + MTA液体；第2组：MTA + MTA液体（80%）+ PG（20%）；第3组：CEM + CEM液体；第4组：CEM + 液体（80%）+ PG（20%）。将水门汀与各自的混合剂混合，并制作一个4mm厚的根尖充填体。在第1、3、7和21天使用流体过滤技术测量微渗漏。采用重复测量方差分析和Sidak检验分析数据。
结果
所有实验组均表现出不同程度的微渗漏。无论时间和液体成分如何，MTA和CEM水门汀之间均未发现显著差异（P = 0.193）。在所有时间间隔内，液体之间也未观察到显著差异（P = 0.312）。微渗漏率随时间下降，除3 - 7天和7 - 21天之间（P = 0.190）外，所有时间间隔之间均观察到显著差异（P < 0.05）。
结论
PG对Angelus MTA和CEM水门汀的封闭能力既无积极影响也无消极影响。
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