The effect of bevel angle on apical microleakage following the use of amalgam and MTA
| Autor: | Sharifian MR, Motahhari P, Shahsia S |
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| Jazyk: | perština |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Journal of Dental Medicine, Vol 19, Iss 2, Pp 43-48 (2006) |
| Druh dokumentu: | article |
| ISSN: | 1024-641X 2008-2444 |
| Popis: | Background and Aim: Achieving appropriate seal in canal obturation is the main goal of endodontic therapy. However, in some cases, it can not be obtained by non-surgical procedures alone. Retrograde surgery is one of the most common procedures in endodontics. Apical seal improvement can be obtained by root end filling and decreasing the root end resection angle (bevel angle). The aim of this study was to investigate the role of bevel angle on apical microleakage following the use of amalgam and MTA as root end filling materials. Materials and Methods: In this experimental study, 128 extracted human teeth were instrumented and obturated by lateral condensation technique. The teeth were divided into two groups and the apical root resection was performed by high speed fissure bur (one group perpendicular to the long axis of the teeth and the other 45 to the long axis. The 3 mm root end cavity was prepared by ultrasonic device. Each group was divided into two subgroups: One filled with amalgam and the other with MTA. Teeth were incubated for 72 h, covered by two layers of nail polish (except for apical 3mm) and submerged in methylene blue for 48 h. Teeth were washed under tap water and mesiodistally dissected by low speed disc. Dye penetration was evaluated by stereomicroscope. Data were analysed by two way ANOVA and Tukey tests with p |
| Databáze: | Directory of Open Access Journals |
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