dc.contributor.advisor | Hülsmann, Michael Prof. Dr. | |
dc.contributor.author | Siegel, Kai Steffen | |
dc.date.accessioned | 2021-11-08T10:01:07Z | |
dc.date.available | 2021-11-18T00:50:08Z | |
dc.date.issued | 2021-11-08 | |
dc.identifier.uri | http://hdl.handle.net/21.11130/00-1735-0000-0008-596F-9 | |
dc.identifier.uri | http://dx.doi.org/10.53846/goediss-8926 | |
dc.language.iso | deu | de |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject.ddc | 610 | de |
dc.title | Qualität der Single-Cone-Wurzelkanalobturation nach Wurzelkanal-präparation mit Single-File- oder Multiple-Files-Technik – Eine Mikro-CT-Studie | de |
dc.type | doctoralThesis | de |
dc.title.translated | Quality of single-cone obturation following root canal preparation with single-file or multiple-files technique - A micro-CT study | de |
dc.contributor.referee | Rinke, Sven PD Dr. | |
dc.date.examination | 2021-11-10 | |
dc.description.abstracteng | Aim: 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 .08. | de |
dc.contributor.coReferee | Schön, Margarete Prof. Dr. | |
dc.subject.eng | single-file | de |
dc.subject.eng | multiple-file | de |
dc.subject.eng | single-cone | de |
dc.subject.eng | root canal | de |
dc.subject.eng | micro-CT | de |
dc.identifier.urn | urn:nbn:de:gbv:7-21.11130/00-1735-0000-0008-596F-9-9 | |
dc.affiliation.institute | Medizinische Fakultät | de |
dc.subject.gokfull | Zahn-, Mund- und Kieferheilkunde - Allgemein- und Gesamtdarstellungen (PPN619876360) | de |
dc.description.embargoed | 2021-11-18 | |
dc.identifier.ppn | 1776429869 | |