Abstract
The aim of this study was to evaluate the effectiveness of gutta-percha and Resilon in filling lateral root canals by using the Obtura II system. Root canals of artificial teeth were prepared using a standard protocol, and lateral canals were made in three thirds of the root canal. The root canals were filled with either Obtura gutta-percha (OB), Endo-points flow gutta-percha (ED), or Resilon (RE) by using the Obtura II system. The fillings were evaluated using digitized radiographs and analyzed by using Image Tool software. Outlines of the total areas of the lateral canals and the filled areas were used to determine the percentage of filling in each lateral canal. Data were analyzed with the Kruskal-Wallis and Dunn tests at a 5% significance level. RE and ED showed better results than OB did in the three thirds of the root canals. When the root canal thirds were compared, OB and RE were more effective in the cervical third than in the apical third (p < 0.05). In conclusion, Resilon and EndoFlow gutta-percha were effective in filling lateral canals by using the Obtura II system.
Highlights
Means and standard deviations for the percentage of filled areas in the lateral canals in different thirds of the canal and in the three experimental groups are shown in figure 2
Statistical analysis revealed that, in all thirds of the root canal, Resilon and EndoFlow were more effective in filling the lateral canals than Obtura gutta-percha was (p < 0.05)
The filling ability of EndoFlow was similar in the three-thirds of the root canal, whereas Resilon and Obtura gutta-percha performed better in the cervical third than in the apical third (p < 0.05)
Summary
The main objective of endodontic treatment, in addition to cleaning and shaping the root canals, is to fill the pulp cavity[1,2,3] and achieve periapical repair.[4,5] The filling technique and the properties of the material employed are the two essential factors for three-dimensional filling of the root canal system.[6,7,8]It has been suggested that the ideal root canal filling should consist of a sufficient amount of gutta-percha covered by a thin layer of a sealer.[9,10] In this regard, several filling techniques employing thermoplastic guttapercha have been evaluated for their effectiveness in filling irregular or lateral root canals.[9,11,12,13,14].
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