1Professor & Head of the Department, Department of Conservative Dentistry and Endodontics, Sharavathi Dental College and Hospital, Shimoga, Karnataka, India
2Post Graduate, Department of Conservative Dentistry and Endodontics, Sharavathi Dental College and Hospital, Shimoga, Karnataka, India
3Professor, Department of Conservative Dentistry and Endodontics, Sharavathi Dental College and Hospital, Shimoga, Karnataka, India
4Senior Lecturer, Department of Conservative Dentistry and Endodontics, Sharavathi Dental College and Hospital, Shimoga, Karnataka, India
*Corresponding author: Dr. Tom P Varghese, Post Graduate, Department of Conservative Dentistry and Endodontics, Sharavathi Dental College and Hospital, Shimoga, Karnataka, India, E-mail: Dr.tompvarghese@gmail.com, Ph no: 9035977178
Online published on 31 August, 2017.
The purpose of the present study was to evaluate and compare the sealing ability of Glass ionomer cement, Flowable composite resin, and Mineral trioxide aggregate when placed coronally as double-sealing material over gutta-percha in root canal treated teeth.
A sample of 40 freshly extracted human Mandibular single rooted teeth were cleaned, shaped and obturated with gutta-percha and AH Plus. The gutta-percha was reduced to a depth of 3.5 mm from the cement-enamel junction using Glades Glidden Drill and standardized access cavities with 4 mm depth were prepared at the coronal ends of the roots. The specimens were randomly divided into four groups containing 10 teeth each depending on the restorations they received in the coronal cavity. A positive control group of 10 teeth received no restorative barrier over gutta-percha. All root surfaces were covered with two coats of nail varnish, leaving only the access opening, which were completely covered with nail varnish. All teeth were immersed in Methylene blue, and were observed under stereomicroscope for the depth of dye penetration.
The results were tabulated and analyzed using Kruskal-Wallis test and multiple comparison between each group was carried out using Mann-Whitney test.
The group sealed with MTA showed least dye penetration than other groups and the difference was statistically significant. Highest dye penetration was seen with groups sealed with GIC and was statistically significant compared with other two groups.
The results showed that the MTA provided significantly better intra coronal seal when compared to other two restorations. The composite resin also showed significantly better seal than the group sealed with GIC, which showed highest leakage.
Coronal micro leakage, Coronal seal, Double-seal technique, Mineral trioxide aggregate
