Der Einfuss von Säurewirkung und Bürstabrasion auf die Stabilität verschiedener Dentinschutzlacke - eine In-vitro-Untersuchung

Hellwig, Fabian

dc.contributor.advisor	Mausberg, Rainer Prof. Dr.
dc.contributor.author	Hellwig, Fabian
dc.date.accessioned	2015-09-03T08:55:35Z
dc.date.available	2015-09-30T22:50:05Z
dc.date.issued	2015-09-03
dc.identifier.uri	http://hdl.handle.net/11858/00-1735-0000-0023-3DA1-B
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-5244
dc.language.iso	deu	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	610	de
dc.title	Der Einfuss von Säurewirkung und Bürstabrasion auf die Stabilität verschiedener Dentinschutzlacke - eine In-vitro-Untersuchung	de
dc.type	doctoralThesis	de
dc.title.translated	The infuence of acid effect and brush abrasion on the stability of various desensitization varnishes - an in-vitro study	de
dc.contributor.referee	Gersdorff, Nikolaus Prof. Dr.
dc.date.examination	2015-09-23
dc.description.abstracteng	The aim of this study was to investigate the dentin protection of different desensitization varnishes (light- and self-curing) during acid action/abrasion stress and thermocyclic loading in-vitro. Materials and Methods: Dentin discs of 2 mm thickness were cut from 120 human molars, embedded and polished. Specimens were randomized into five groups (n = 24): A: negative control, B: GlumaTM Desensitizer, C: Cervitec plusTM (self-curing), D: Seal & ProtectTM, and E: Admira ProtectTM (light-curing). In groups B-E, varnish was applied on 2/3 of the dentin surface and 1/3 acted as internal control. Stress cycle (2 cycles/day) for specimens were as follows: 1. acid action (pH: 2.9: 5 min), 2. remineralization (synthetic saliva: 60 min), 3. brushing machine (100 strokes), 4. thermocycling (5 cycles), and 5. remineralization (synthetic saliva: 6 h) for each group (n = 12) for 30 (15 d) or 60 times (30 d). Subsequently, specimens were sewn, embedded and analyzed using an incident light microscope (Axioplan 2). Substance loss was measured in µm. For statistical analysis a multiple contrast test was used (p < 0.05). Results: Groups A, D and E showed the highest substance loss after 15 d (p > 0.05). In contrast, B and C had a significantly lower substance loss than A, D and E (p < 0.01). After 30 d, A showed the highest substance loss (p < 0.01), whereas the other groups lacked a significant difference (p > 0.05). Varnish layer loss was shown for groups D and E with a remaining protective layer; groups A-C showed dentin removal. Conclusion: All four varnishes are protective compared to the untreated control. Light-curing varnishes might ensure provide higher dentin protection than self-curing materials.	de
dc.contributor.coReferee	Schön, Margarete Prof. Dr.
dc.subject.ger	Dentinüberempfindlichkeit	de
dc.subject.ger	Dentinerosion	de
dc.subject.ger	Dentinabrasion	de
dc.subject.ger	Abrasion	de
dc.subject.ger	Erosion	de
dc.subject.ger	Dentinschutzlacke	de
dc.subject.eng	dentin	de
dc.subject.eng	desensitization varnishes	de
dc.subject.eng	Dentin Hypersensitivity	de
dc.subject.eng	brush abrasion	de
dc.subject.eng	erosion	de
dc.subject.eng	thermocycling	de
dc.identifier.urn	urn:nbn:de:gbv:7-11858/00-1735-0000-0023-3DA1-B-7
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.description.embargoed	2015-09-30
dc.identifier.ppn	835946339

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Human- und Zahnmedizin [2872]

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