Kramer, Katharina

[["dc.bibliographiccitation.firstpage","307"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","AMERICAN JOURNAL OF DENTISTRY"],["dc.bibliographiccitation.lastpage","314"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Schmickler, Jan"],["dc.contributor.author","Wurbs, Sabine"],["dc.contributor.author","Wurbs, Susanne"],["dc.contributor.author","Kramer, Katharina"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Hornecker, Else"],["dc.contributor.author","Mausberg, Rainer F."],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2018-11-07T10:04:42Z"],["dc.date.available","2018-11-07T10:04:42Z"],["dc.date.issued","2016"],["dc.description.abstract","Purpose: This randomized clinical trial investigated the influence of the utilization time of brush heads from different types of power toothbrushes [oscillating rotating (OR) and sonic action (SA)] on oral hygiene (plaque accumulation and gingival inflammation) over a 6-month observation period. Methods: 49 participants were randomly allocated into two groups: use of the same brush head over 6 months (NR: non-replacement) or replacement of brush head every 4 weeks over 6 months (R: replacement). Each group was subdivided into two subgroups according to kind of toothbrush (TB) used (OR and SA). Modified Quigley-Hein plaque index (QHI), papilla bleeding index (PBI), and gingival index (GI) were recorded at baseline and 2, 8, 12, 16, and 24 weeks after baseline. After 24 weeks, participants of both groups (R and NR) received a new brush head. At week 26, final QHI, PBI, and GI were recorded. Results: QHI decreased between baseline and follow-up visits in R groups (P< 0.05), with the exception of week 12 (P= 0.26). In NR groups, no significant decrease was detected (P> 0.05). There was no significant effect of time on PBI or GI in any of R subgroups (P> 0.05). In NR oscillating/rotating TB: significant increase in PBI and GI was detected 24 weeks after baseline (PBI: P= 0.02, GI: P= 0.03); sonic action TBs showed significant decrease in PBI at every follow-up visit (P< 0.05), except at 24 weeks after baseline (P= 0.73). GI was significantly decreased at 2 weeks after baseline only (P< 0.01)."],["dc.identifier.isi","000393846100002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38754"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mosher & Linder, Inc"],["dc.relation.issn","0894-8275"],["dc.title","The influence of the utilization time of brush heads from different types of power toothbrushes on oral hygiene assessed over a 6-month observation period: A randomized clinical trial"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","136"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Oral Rehabilitation"],["dc.bibliographiccitation.lastpage","144"],["dc.bibliographiccitation.volume","43"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Kramer, Katharina"],["dc.contributor.author","Buergers, Ralf"],["dc.contributor.author","Roediger, Matthias"],["dc.date.accessioned","2018-11-07T10:18:59Z"],["dc.date.available","2018-11-07T10:18:59Z"],["dc.date.issued","2016"],["dc.description.abstract","This practice-based study evaluates the survival and success of conventionally luted metal-ceramic and zirconia molar crowns fabricated by using a prolonged cooling period for the veneering porcelain. Fifty-three patients were treated from 07/2008 to 07/2009 with either metal-ceramic crowns (MCC) or zirconia crowns (ZC). Forty-five patients (26 female) with 91 restorations (obser-vational period: 640 +/- 48 months) participated in a clinical follow-up examination and were included in the study. Estimated cumulative survival (ECSv), success (ECSc) and veneering ceramic success (ECVCSc) were calculated (Kaplan-Meier) and analysed by the crown fabrication technique and the position of the restoration (Cox regression model) (P < 005). Five complete failures (MCC: 2, ZC: 3) were recorded (5-year ECSv: MCC: 976%, (95% confidence interval (95%-CI): [93%; 100%]/ZC: 940%, (95%-CI): [87%; 100%]). Of the MCCs (n = 41), 850%, [95%-CI: (77%; 96%)] remained event-free, whereas the ECSc for the ZCs (n = 50) was 743% (95%-CI): [61%; 87%]. No significant differences in ECSv (P = 051), ECSc (P = 043) and ECVCSc (P = 036) were detected between the two fabrication techniques. Restorations placed on terminal abutments (n = 44) demonstrated a significantly lower ECVCSc (P = 0035), (5-year VCF-rate: 148%) than crowns placed on tooth-neighboured abutments (n = 47), (5-year VCF-rate: 43%). In the present study, zirconia molar crowns demonstrated a 5-year ECSv, ECSc and ECVCSc comparable to MCCs. Irrespective of the fabrication technique, crowns on terminal abutments bear a significantly increased risk for VCFs. Clinical investigations with an increased number of restorations are needed."],["dc.description.sponsorship","DeguDent GmbH; Dentsply DeTrey"],["dc.identifier.doi","10.1111/joor.12348"],["dc.identifier.isi","000368019700008"],["dc.identifier.pmid","26393865"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41563"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","1365-2842"],["dc.relation.issn","0305-182X"],["dc.title","A practice-based clinical evaluation of the survival and success of metal-ceramic and zirconia molar crowns: 5-year results"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","19"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","QUINTESSENCE INTERNATIONAL"],["dc.bibliographiccitation.lastpage","29"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Lattke, Anja"],["dc.contributor.author","Eickholz, Peter"],["dc.contributor.author","Kramer, Katharina"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2018-11-07T10:03:26Z"],["dc.date.available","2018-11-07T10:03:26Z"],["dc.date.issued","2015"],["dc.description.abstract","Objective: This study aimed to determine the survival rate and prevalence of biologic and technical complications associated with single-tooth implants with all-ceramic abutments in the anterior region. Method and Materials: A total of 33 patients were restored with 50 anterior implants and temporarily luted all-ceramic crowns on prefabricated zirconia abutments. All of the patients subsequently received annual supportive maintenance; 27 patients (18 women, 22-74 years) with 42 implants participated in the final maintenance visit and were included in the study (follow-up 78.1 +/- 27.0 months). The time-dependent survival rate (Kaplan-Meier) and the frequency of prosthetic complications (abutment fracture [AF], screw loosening [SL], fracture of veneering ceramics [VF], retention loss [RL]) and biologic complications (peri-implantitis) were calculated to determine the success rates. Results: No implant loss (implant-related survival rate 100%) but one abutment fracture occurred throughout the entire observation period; therefore, the survival rate of the superstructures (in situ criterion) was 97.6% (95% confidence interval [CI] 0.930-1.000) after 7 years. Eleven restorations were affected by prosthetic complications: RL (n = 4), VF (n = 5), and SL (n = 2). Peri-implantitis was diagnosed for two implants (probing depth > 5 mm, bleeding on probing [BOP]/suppuration, and bone loss > 3 mm) (implant-related peri-implantitis rate 4.8%). No restoration required replacement due to complications. The success rate (event-free restoration) was 75.9% (95% CI 0.636-0.882) after 7 years. Conclusions: Considering the calculated survival rate, the application of all-ceramic zirconia implant abutments in the anterior region can be recommended as a reliable therapy in private practice. Fractures of veneering ceramics were the most common prosthetic complication."],["dc.description.sponsorship","Dentsply Implants, Mannheim, Germany; DeguDent, Hanau, Germany"],["dc.identifier.doi","10.3290/j.qi.a32818"],["dc.identifier.isi","000351715200003"],["dc.identifier.pmid","25262676"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38465"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Quintessence Publishing Co Inc"],["dc.relation.issn","1936-7163"],["dc.relation.issn","0033-6572"],["dc.title","Practice-based clinical evaluation of zirconia abutments for anterior single-tooth restorations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]