Evaluating the Effect of Resection on the Sealing Ability of MTA and CEM Cement

Autor: Amin Salem Milani, Sahar Shakouie, Zahra Borna, Alireza Sighari Deljavan, Mohammad Asghari Jafarabadi, Fatemeh Pournaghi Azar
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Iranian Endodontic Journal, Vol 7, Iss 3, Pp 134-138 (2012)
Druh dokumentu: article
ISSN: 1735-7497
2008-2746
Popis: Introduction: In cases of limited access to the surgical site, an alternative approach is to obturate the canal prior to surgery. Endodontic surgery is subsequently performed by root-end resection without retro-cavity preparation. This in vitro study was designed to compare the sealing ability of resected roots filled with either mineral trioxide aggregate (MTA) or calcium enriched mixture (CEM) cement. Materials and Methods: Seventy maxillary anterior teeth were selected. Following canal preparation, the teeth were randomly divided into four experimental (n=15) and two control (n=5) groups. In group 1, CEM cement was placed into the apical 6-mm of the canal. The remainder of the canal was filled with gutta-percha/AH26 and 3-mm root-ends were resected. In group 2: the teeth were treated as described above except that MTA was used instead of CEM cement. Group 3: The canals were obturated with gutta-percha/AH26. After root-end resection, retro cavities were prepared and filled with CEM cement. Group 4: The teeth were treated as described for group 3 except that MTA was used instead of CEM cement. The root apices of teeth were then placed in India ink, and maximum dye penetration was measured with a stereomicroscope. Nested ANOVA and Independent samples t-test were used to evaluate the statistical significance. Results: The mean dye leakage values for groups 1 to 4 were 402.6, 526.4, 141.0, and 177.4, respectively. Overall, the retrofilled groups (3 and 4) had less microleakage compared to the resected materials; in the CEM cement groups this was statistically significant (P
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