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Qualität der Single-Cone-Wurzelkanalobturation nach Wurzelkanal-präparation mit Single-File- oder Multiple-Files-Technik – Eine Mikro-CT-Studie

dc.contributor.advisorHülsmann, Michael Prof. Dr.
dc.contributor.authorSiegel, Kai Steffen
dc.titleQualität der Single-Cone-Wurzelkanalobturation nach Wurzelkanal-präparation mit Single-File- oder Multiple-Files-Technik – Eine Mikro-CT-Studiede
dc.title.translatedQuality of single-cone obturation following root canal preparation with single-file or multiple-files technique - A micro-CT studyde
dc.contributor.refereeRinke, Sven PD Dr.
dc.description.abstractengAim: It was the aim of the study to compare the quality of single-cone root canal obturation following preparation with single-file or multiple-files technique using micro-computer-tomography. Materials and methods: Seventy-five extracted human maxillary incisors with straight root canals were randomly distributed into five groups (n=15). Three groups were prepared in single-file technique with NiTi files Reciproc R25 (regressive taper from 0.8 to 0.5), R40 (regressive taper from 0.6 to 0.5) (both VDW, Munich, Germany), and F6 SkyTaper 25/.06 (Komet, Lemgo, Germany) and groups 4 and 5 using the multiple-files system Mtwo (VDW) to sizes 25/.06 or 40/.04, respectively. Preparation was performed according to the manufacturers` recommendations. Following preparation all root canals were obturated in a single-cone technique using company-specific congruent gutta-percha cones in the dimensions of the final file. No sealer was used. The obturated teeth were scanned in the micro-CT (SkyScan 1272 (Bruker, Pixel size 10.9 µm)). Porosities between gutta-percha cone and root canal wall were evaluated horizontally at 0 mm, 4 mm, and 8 mm coronal from the apical tip of the cone and longitudinally over the distance from 0 to 8 mm coronal of the cone tip. Statistical analysis was performed using the Mann-Whitney-U-test (P<.05). Results: The comparison of the single-file system R25 with the multiple-files system Mtwo 25/.06 did not show significant differences for both evaluations as well as the comparison between the single-file system F6 SkyTaper 25/.06 with the multiple-files system 25/.06. The single-file system R40 showed significantly superior results compared to the multiple-files system Mtwo 40/.04 at 8 mm and along the distance from 0 to 8 mm. Conclusion: Summarizing, this study did not reveal significant differences in the quality of single-cone root obturation following preparation using single-file or multiple-files systems with different final sizes 25/.04 or 40/.04, and different instrument tapers .04, .06 or
dc.contributor.coRefereeSchön, Margarete Prof. Dr.
dc.subject.engroot canalde
dc.affiliation.instituteMedizinische Fakultätde
dc.subject.gokfullZahn-, Mund- und Kieferheilkunde - Allgemein- und Gesamtdarstellungen (PPN619876360)de

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