Effektivität von reziprok und rotierend arbeitenden Nickel-Titan-Instrumenten zur Revisionsbehandlung an gekrümmten Molaren - Eine Mikro-Computertomografie-Studie -

Reicherts, Pamela

dc.contributor.advisor	Rödig, Tina PD Dr.
dc.contributor.author	Reicherts, Pamela
dc.date.accessioned	2019-05-29T06:40:04Z
dc.date.available	2019-06-12T22:50:02Z
dc.date.issued	2019-05-29
dc.identifier.uri	http://hdl.handle.net/21.11130/00-1735-0000-0003-C10D-5
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-7475
dc.language.iso	deu	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	610	de
dc.title	Effektivität von reziprok und rotierend arbeitenden Nickel-Titan-Instrumenten zur Revisionsbehandlung an gekrümmten Molaren - Eine Mikro-Computertomografie-Studie -	de
dc.type	doctoralThesis	de
dc.title.translated	Efficacy of reciprocating and rotary NiTi instruments for retreatment of curved root canals assessed by micro-CT	de
dc.contributor.referee	Rinke, Sven PD Dr.
dc.date.examination	2019-06-05
dc.description.abstracteng	Aim: To compare the efficacy of reciprocating and rotary NiTi-instruments in removing filling material from curved root canals using micro-computed tomography. Methodology: Sixty curved root canals were prepared and filled with gutta-percha and sealer. After determination of root canal curvatures and radii in two directions as well as volumes of filling material, the teeth were assigned to three comparable groups (n = 20). Retreatment was performed using Reciproc, ProTaper Universal Retreatment or Hedström files. Percentages of residual filling material and dentine removal were assessed using micro-CT imaging. Working time and procedural errors were recorded. Statistical analysis was performed by variance procedures. Results: No significant differences amongst the three retreatment techniques concerning residual filling material were detected (P > 0.05). Hedström files removed significantly more dentine than ProTaper Universal Retreatment (P < 0.05), but the difference concerning dentine removal between both NiTi systems was not significant (P > 0.05). Reciproc and ProTaper Universal Retreatment were significantly faster than Hedström files (P = 0.0001). No procedural errors such as instrument fracture, blockage, ledging or perforation were detected for Hedström files. Three perforations were recorded for ProTaper Universal Retreatment, and in both NiTi groups, one instrument fracture occured. Conclusions: Remnants of filling material were observed in all samples with no significant differences between the three techniques. Hedström files removed significantly more dentine than ProTaper Universal Retreatment, but no significant differences between both NiTi systems were detected. Procedural errors were observed with ProTaper Universal Retreatment and Reciproc.	de
dc.contributor.coReferee	Schön, Margarete Prof. Dr.
dc.subject.eng	Reciproc	de
dc.subject.eng	ProTaper Universal Retreatment	de
dc.subject.eng	Retreatment	de
dc.subject.eng	Curved root canals	de
dc.subject.eng	Micro-CT	de
dc.subject.eng	Gutta-percha	de
dc.identifier.urn	urn:nbn:de:gbv:7-21.11130/00-1735-0000-0003-C10D-5-6
dc.affiliation.institute	Medizinische Fakultät	de
dc.subject.gokfull	Medizin (PPN619874732)	de
dc.subject.gokfull	Zahn-, Mund- und Kieferheilkunde - Allgemein- und Gesamtdarstellungen (PPN619876360)	de
dc.subject.gokfull	Konservierende Zahnheilkunde (PPN619876395)	de
dc.description.embargoed	2019-06-12
dc.identifier.ppn	1666651885

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Human- und Zahnmedizin [2877]

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