Haupt, Franziska Irene

[["dc.bibliographiccitation.firstpage","1436"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Journal of Endodontics"],["dc.bibliographiccitation.lastpage","1441"],["dc.bibliographiccitation.volume","44"],["dc.contributor.author","Haupt, Franziska"],["dc.contributor.author","Seidel, Miriam"],["dc.contributor.author","Rizk, Marta"],["dc.contributor.author","Sydow, Hans-Georg"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Rödig, Tina"],["dc.date.accessioned","2020-05-22T09:39:42Z"],["dc.date.available","2020-05-22T09:39:42Z"],["dc.date.issued","2018"],["dc.description.abstract","Introduction Manufacturers offer single-file instrumentation systems with matching gutta-percha (GP) cones to simplify root canal preparation and obturation. The purpose of this study was to determine whether file diameters and tapers match with corresponding cone diameters and tapers (precision) as well as industry standards (accuracy). Methods Twenty files and corresponding GP cones from each size of F360 (#25, #35, #45, #55 with .04 taper) and Reciproc (#25, #40, #50 with variable tapers) instruments were examined by using optical microscopy (×32) to determine their diameter and taper. Precision was evaluated by using one-way analysis of variance (α = 0.05) with Scheffé post hoc tests and t tests with Bonferroni correction. Accuracy was calculated by subtracting the nominal values from the measured values of all files and GP cones, and mean diameter and taper differences were compared by using one-way analysis of variance (α = 0.05) and Scheffé post hoc test for pairwise comparison. Results For F360, the majority of file and cone diameters were within the tolerance levels, but most of the file diameters were significantly larger than GP cone diameters ( P < .05), but the majority of all measured values were within the tolerance levels. For Reciproc, file and cone diameters at D1 and D3 mostly approached the nominal values. At the coronal end, file diameters #25 and #50 were significantly smaller than cone diameters ( P < .05). For both instrumentation systems, almost all file and cone tapers matched with the preset tolerance ranges. For Reciproc, significant differences between file and GP cone demonstrated either smaller cone or smaller file diameters and tapers, depending on the size. Most of the measured values were within the acceptable range, but diameters at the coronal end exhibited the highest percent difference from the nominal values. Conclusions Despite the call for standardization, variability in diameter and taper dimensions between single-file instrumentation systems and their corresponding GP cones can be expected."],["dc.identifier.doi","10.1016/j.joen.2018.06.005"],["dc.identifier.pmid","30078573"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65710"],["dc.language.iso","en"],["dc.relation.eissn","1878-3554"],["dc.relation.issn","0099-2399"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.title","Diameter and Taper Variability of Single-file Instrumentation Systems and Their Corresponding Gutta-percha Cones"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","394"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Australian Endodontic Journal"],["dc.bibliographiccitation.lastpage","399"],["dc.bibliographiccitation.volume","45"],["dc.contributor.author","Rödig, Tina"],["dc.contributor.author","Krämer, Juliane"],["dc.contributor.author","Müller, Christine"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Haupt, Franziska"],["dc.contributor.author","Rizk, Marta"],["dc.date.accessioned","2020-11-05T15:13:42Z"],["dc.date.available","2020-11-05T15:13:42Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1111/aej.v45.3"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/68535"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-352.9"],["dc.relation.eissn","1747-4477"],["dc.relation.issn","1329-1947"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.title","Incidence of microcracks after preparation of straight and curved root canals with three different NiTi instrumentation techniques assessed by micro‐ CT"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","105310"],["dc.bibliographiccitation.journal","Journal of the Mechanical Behavior of Biomedical Materials"],["dc.bibliographiccitation.volume","133"],["dc.contributor.author","Rödig, Tina"],["dc.contributor.author","Dullin, Christian"],["dc.contributor.author","Kück, Fabian"],["dc.contributor.author","Krebs, Marcel"],["dc.contributor.author","Hettwer-Steeger, Ingrid"],["dc.contributor.author","Haupt, Franziska"],["dc.date.accessioned","2022-12-01T08:30:40Z"],["dc.date.available","2022-12-01T08:30:40Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1016/j.jmbbm.2022.105310"],["dc.identifier.pii","S1751616122002235"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/117946"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-621"],["dc.relation.issn","1751-6161"],["dc.rights.uri","https://www.elsevier.com/tdm/userlicense/1.0/"],["dc.title","Influence of moisture content of frozen and embalmed human cadavers for identification of dentinal microcracks using micro-computed tomography"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Clinical Oral Investigations"],["dc.contributor.author","Haupt, Franziska"],["dc.contributor.author","Riggers, Insa"],["dc.contributor.author","Konietschke, Frank"],["dc.contributor.author","Rödig, Tina"],["dc.date.accessioned","2022-01-11T14:05:48Z"],["dc.date.available","2022-01-11T14:05:48Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract Objectives The aim of this study was to evaluate the effectiveness of different fiber post removal techniques and to correlate dentinal loss with microcrack formation. Materials and methods Forty-five extracted single-rooted teeth were root canal treated and fiber posts were adhesively luted. Specimens were divided into three groups ( n  = 15) according to the removal technique: long-shaft round bur (EndoTracer #08, Komet, Lemgo, Germany), SonicFlex Endo (KaVo, Biberach, Germany), DT Post Removal Kit (VDW, Munich, Germany). Roots were scanned before post cementation and after post removal using micro-computed tomography. Dentin loss, residual luting material, working time, and the induction of microcracks were assessed. Statistical analysis was performed by using multiple contrast tests (max- t tests, α  = 0.05). Correlations between parameters dentin loss/new microcracks and dentin loss/residual material were calculated using Kendall’s tau. Results Post removal with SonicFlex Endo resulted in the highest amount of removed dentin with significant differences to the round bur and the DT Post Removal Kit. No technique was found to completely remove the post and luting material. All techniques induced microcracks with the DT Post Removal Kit presenting the highest number of new defects. No correlation between dentin loss and new microcracks was observed. Deviations from the original root canal occurred in all groups, but no perforation was observed. Conclusions All techniques resulted in dentin loss, residual luting material, and the formation of microcracks. However, no correlation between dentin loss and the induction of microcracks was observed. Clinical relevance As all techniques resulted in microcrack formation and dentin loss, this study emphasizes the risk of iatrogenic damage due to post removal procedures."],["dc.description.abstract","Abstract Objectives The aim of this study was to evaluate the effectiveness of different fiber post removal techniques and to correlate dentinal loss with microcrack formation. Materials and methods Forty-five extracted single-rooted teeth were root canal treated and fiber posts were adhesively luted. Specimens were divided into three groups ( n  = 15) according to the removal technique: long-shaft round bur (EndoTracer #08, Komet, Lemgo, Germany), SonicFlex Endo (KaVo, Biberach, Germany), DT Post Removal Kit (VDW, Munich, Germany). Roots were scanned before post cementation and after post removal using micro-computed tomography. Dentin loss, residual luting material, working time, and the induction of microcracks were assessed. Statistical analysis was performed by using multiple contrast tests (max- t tests, α  = 0.05). Correlations between parameters dentin loss/new microcracks and dentin loss/residual material were calculated using Kendall’s tau. Results Post removal with SonicFlex Endo resulted in the highest amount of removed dentin with significant differences to the round bur and the DT Post Removal Kit. No technique was found to completely remove the post and luting material. All techniques induced microcracks with the DT Post Removal Kit presenting the highest number of new defects. No correlation between dentin loss and new microcracks was observed. Deviations from the original root canal occurred in all groups, but no perforation was observed. Conclusions All techniques resulted in dentin loss, residual luting material, and the formation of microcracks. However, no correlation between dentin loss and the induction of microcracks was observed. Clinical relevance As all techniques resulted in microcrack formation and dentin loss, this study emphasizes the risk of iatrogenic damage due to post removal procedures."],["dc.identifier.doi","10.1007/s00784-021-04338-0"],["dc.identifier.pii","4338"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/97750"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-507"],["dc.relation.eissn","1436-3771"],["dc.relation.issn","1432-6981"],["dc.title","Effectiveness of different fiber post removal techniques and their influence on dentinal microcrack formation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]