We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A comparative evaluation of gutta-percha filled areas in curved root canals obturated with different techniques.
- Authors
Schäfer, Edgar; Nelius, Birthe; Bürklein, Sebastian
- Abstract
The aim of this study was to compare different obturation techniques in severely curved canals in terms of the percentage of gutta-percha filled area and voids. The obturation times and the incidence of extrusion of filling material were also compared. Curved root canals (curvature, 25-35°) of 48 extracted human teeth were enlarged with Mtwo rotary NiTi instruments and obturated as follows: Group A: 0.04/35 matched-single-cone; Group B: cold lateral compaction with 0.04/35 gutta-percha master cone; Group C: warm vertical compaction; Group D: lateral compaction with standardized gutta-percha master cone. In all groups AHPlus was used as sealer. The teeth were sectioned horizontally at 2, 3, 4, 6 and 8 mm from the apex. The total area of each canal segment was measured and the areas of gutta-percha, sealer and voids were converted to percentages of the total area. Data were subjected to the Kruskal-Wallis and post hoc Dunn test. Obturation times were compared using ANOVA and post hoc Student-Newman-Keuls test. The matched-single-cone obturation (group A) was significantly the fastest method while warm vertical compaction (group C) required significantly more time than all other techniques ( p < 0.05). No significant differences were obtained between the groups in terms of percentage of voids at any level ( p > 0.05). At all levels, groups B, C, and D produced significantly higher gutta-percha filled areas ( p < 0.05) and lower sealer-filled areas ( p < 0.05) than group A. No significant differences were found between groups B, C, and D ( p > 0.05) regarding gutta-percha and sealer-filled areas. Within the limitations of the in vitro study, it can be concluded that lateral compaction of greater taper gutta-percha cones is a fast and efficient method for obturation of curved canals.
- Subjects
DENTAL pulp cavities; GUTTA-percha; THERMOPLASTICS; DENTAL fillings; ARTIFICIAL palates; COMPACTING; COMPARATIVE studies
- Publication
Clinical Oral Investigations, 2012, Vol 16, Issue 1, p225
- ISSN
1432-6981
- Publication type
Article
- DOI
10.1007/s00784-011-0509-z