Abstract
Aim: the purpose of this study was to evaluate the radiopacity of different filling materials, using resources of digital radiography in a human tooth model. Methodology: seventy extracted single-rooted human teeth were selected, the coronal access was performed, and the working length was established 1 mm short of the foramen. After chemo-mechanical preparation the teeth were divided into 7 groups (n = 10) according to the filling material used: G1 Epiphany, G2 AH Plus, G3 EndoRez, G4 EndoFill, G5 Endomethasone, G6 Sealapex and G7 Sealer 26. In the G1 Epiphany system, Resilon cones were used; however, in all other groups gutta-percha cones were used. After seven days of storage, digital radiographs were taken to assess the results. To evaluate the radiopacity, the digital software DBSWIN generated a colorimetric graphic for each sample, correlating the color gradient observed in the sample with a corresponding numerical score. The data were statistically analyzed by ANOVA and Tukey's test at 5% significance level. Results: the system Epiphany / Resilon was statistically superior to the AH Plus, EndoRez, Sealapex and Sealer 26 groups associated with gutta-percha in terms of radiopacity (P <0.05). Conclusion: the root canal sealer Epiphany, associated with Resilon cones, showed the highest values of radiopacity.
Highlights
Filling of the root canal system is usually performed using a combination of sealer and gutta-percha
Statistical analysis showed that the filling systems Endofill/gutta-percha and Endomethasone/gutta-percha were statistically similar to other groups with respect to the degree of radiopacity (p>0.05)
Radiopacity is important because it allows the distinction between the endodontic filling material and adjacent anatomical structures [3,4], such as bone and teeth [5] and it allows evaluation of the quality of endodontic treatment, detecting possible spaces in the filling [6]
Summary
Filling of the root canal system is usually performed using a combination of sealer and gutta-percha. The lack of adherence of gutta-percha to both the canal walls and cement is a major disadvantage. Sealer must be used to establish intimate adaptation of the gutta-percha to the dentinal walls [2]. Endodontic filling materials of all types must meet certain requirements to be considered adequate. An ideal root canal filling material must provide, among other physical and chemical properties, adequate radiopacity. This propertie allows the distinction of the filling material from adjacent anatomical structures [3,4] such as bone and teeth [5]. The radiopacity of endodontic filling systems has been of particular significance for assessing the quality of endodontic treatment and detecting possible voids in the filling [6]
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