Wiegand, Annette E.

[["dc.bibliographiccitation.firstpage","154"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Caries Research"],["dc.bibliographiccitation.lastpage","162"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Schneider, S."],["dc.contributor.author","Sener, Beatrice"],["dc.contributor.author","Roos, Malgorzata"],["dc.contributor.author","Attin, T."],["dc.date.accessioned","2018-11-07T09:46:31Z"],["dc.date.available","2018-11-07T09:46:31Z"],["dc.date.issued","2014"],["dc.description.abstract","This study aimed to analyse the impact of brushing on the protective effect of different fluoride solutions on enamel and dentin erosion. Bovine enamel and dentin specimens were rinsed once with TiF4, AmF, SnF2 (0.5 (M) F, 2 min) or water (control). Specimens were either left unbrushed or brushed with 10, 20, 50, 100 or 500 brushing strokes in an automatic brushing machine (2 N, non-fluoridated toothpaste slurry). Ten specimens per group were eroded with hydrochloric acid (HCI) (pH 2.3) for 60 s, and calcium release into the acid was determined by atomic absorption spectroscopy. Additionally, enamel and dentin surfaces were analysed by X-ray energy-dispersive spectroscopy (EDS) (n =6/group) and scanning electron microscopy (SEM) (n = 2/group) before brushing and after 500 brushing strokes. Statistical analysis (p < 0.05) was performed by three- and one-way ANOVA (calcium release) or repeated measures ANOVA (EDS). TiF4, AmF and SnF2 reduced the erosive calcium loss in unbrushed specimens to 58-67% (enamel) and 23-31% (dentin) of control. Calcium release increased with increasing brushing strokes prior to erosion and amounted to 70-88% (enamel) and 45-78% (dentin) of control after 500 brushing strokes. Brushing reduced the surface concentration of fluoride (AmF), tin (SnF2) and titanium (TiF4). SEM revealed that surface precipitates were affected by long-term brushing. Brushing reduced the protective potential of TiF4, AmF and SnF2 solutions. However, considering a small number of brushing strokes, the protective effect of fluoride solutions is only slightly affected by brushing abrasion. (c) 2014 S. Karger AG, Basel"],["dc.identifier.doi","10.1159/000353143"],["dc.identifier.isi","000331773600010"],["dc.identifier.pmid","24401733"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34889"],["dc.language.iso","en"],["dc.notes.intern","DeepGreen Import"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","S. Karger AG"],["dc.relation.eissn","1421-976X"],["dc.relation.issn","1421-976X"],["dc.relation.issn","0008-6568"],["dc.rights","https://www.karger.com/Services/SiteLicenses"],["dc.title","Stability against Brushing Abrasion and the Erosion-Protective Effect of Different Fluoride Compounds"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","83"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Clinical Oral Investigations"],["dc.bibliographiccitation.lastpage","88"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Attin, T."],["dc.contributor.author","Lennon, Aine M."],["dc.contributor.author","Yakin, M."],["dc.contributor.author","Becker, K."],["dc.contributor.author","Buchalla, Wolfgang"],["dc.contributor.author","Attin, Rengin"],["dc.contributor.author","Wiegand, Annette"],["dc.date.accessioned","2018-11-07T11:04:15Z"],["dc.date.available","2018-11-07T11:04:15Z"],["dc.date.issued","2007"],["dc.description.abstract","The aim of the in-situ study was to determine fluoride uptake in non-fluoridated, demineralized enamel after application of fluoride varnishes on enamel samples located at various distances from the non-fluoridated samples. All enamel samples used were demineralized with acidic hydroxyethylcellulose before the experiment. Intra-oral appliances were worn by ten volunteers in three series: (1, Mirafluorid, 0.15% F; 2, Duraphat, 2.3% F and 3, unfluoridated controls) of 6 days each. Each two enamel samples were prepared from 30 bovine incisors. One sample was used for the determination of baseline fluoride content (BFC); the other was treated according to the respective series and fixed in the intra-oral appliance for 6 days. Additionally, from 120 incisors, each four enamel samples were prepared (one for BFC). Three samples (a-c) were placed into each appliance at different sites: (a) directly neighboured to the fluoridated specimen (=next), (b) at 1-cm distance (=1 cm) and (c) in the opposite buccal aspect of the appliance (=opposite). At these sites, new unfluoridated samples were placed at days 1, 3 and 5, which were left in place for 1 day. The volunteers brushed their teeth and the samples with fluoridated toothpaste twice per day. Both the KOH-soluble and structurally bound fluoride were determined in all samples to determine fluoride uptake and were statistically analyzed. One day, after fluoridation with Duraphat, KOH-soluble fluoride uptake in specimen a (=next) was significantly higher compared to the corresponding samples of both the control and Mirafluorid series, which in turn were not significantly different from each other. At all other sites and time points, fluoride uptake in the enamel samples were not different from controls for both fluoride varnishes. Within the first day after application, intra-oral-fluoride release from the tested fluoride varnish Duraphat leads to KOH-soluble fluoride uptake only in enamel samples located in close vicinity to the fluoridation site."],["dc.identifier.doi","10.1007/s00784-006-0080-1"],["dc.identifier.isi","000244186100010"],["dc.identifier.pmid","17043869"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11187"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/51797"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1432-6981"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Deposition of fluoride on enamel surfaces released from varnishes is limited to vicinity of fluoridation site"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","269"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Caries Research"],["dc.bibliographiccitation.lastpage","277"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Waldheim, Elena"],["dc.contributor.author","Sener, Beatrice"],["dc.contributor.author","Magalhaes, Ana Carolina"],["dc.contributor.author","Attin, T."],["dc.date.accessioned","2018-11-07T08:34:01Z"],["dc.date.available","2018-11-07T08:34:01Z"],["dc.date.issued","2009"],["dc.description.abstract","This study aimed to analyse and compare the protective effect of buffered (pH 3.5) and native (pH 1.2) TiF4 in comparison with NaF solutions on enamel erosion. Bovine samples were pretreated with 1.50% TiF4 or 2.02% NaF (both 0.48 M F) solutions, each at a pH of 1.2 and 3.5. The control group received no fluoride pretreatment. Twenty samples per group were eroded with HCl (pH 2.6) for 10 x 60 s. Erosion was either investigated by profilometry (n = 10) or by determination of calcium release into the acid (n = 10). Additionally, the elemental surface composition was quantified by X-ray energy-dispersive spectroscopy in fluoridated but not eroded samples (6 samples per group). Scanning electron microscopy was performed prior and after erosion (2 samples per group). Cumulative enamel loss (mu m) and calcium release (nmol/mm(2)) were analysed by repeated-measures ANOVA. The Ti and F surface composition was analysed by one-way ANOVA separately for each element. Only TiF4 at pH 1.2 reduced enamel surface loss significantly. Calcium release was significantly reduced by TiF4 and NaF at pH 1.2, but not by the solutions at pH 3.5. Samples pretreated with TiF4 at pH 1.2 showed a significant increase in Ti, while NaF increased F concentration significantly. Only TiF4 at pH 1.2 induced the formation of a glaze-like layer, which was still present after erosion. Enamel erosion can be significantly reduced by TiF4 at pH 1.2 but not at pH 3.5. TiF4 at pH 1.2 was more effective in protecting against enamel erosion than NaF. Copyright (C) 2009 S. Karger AG, Basel"],["dc.identifier.doi","10.1159/000217859"],["dc.identifier.isi","000268106900005"],["dc.identifier.pmid","19439948"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9311"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17720"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Karger"],["dc.relation.issn","0008-6568"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Comparison of the Effects of TiF4 and NaF Solutions at pH 1.2 and 3.5 on Enamel Erosion in vitro"],["dc.type","journal_article"],["dc.type.internalPublication","no"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]