Leha, Andreas

[["dc.bibliographiccitation.journal","Clinical Oral Investigations"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Zuck, Tanja"],["dc.contributor.author","Hausdörfer, Tim"],["dc.contributor.author","Leha, Andreas"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2021-09-01T06:42:27Z"],["dc.date.available","2021-09-01T06:42:27Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract Objectives A university-based randomized clinical study evaluated the 5-year performance of chairside-fabricated zirconia-reinforced lithium silicate (ZLS)-ceramic partial crowns. Material and methods Forty-five patients were restored with 61 chairside-fabricated ZLS-restorations (Cerec SW 4.2, Dentsply Sirona, Germany; Vita Suprinity, Vita Zahnfabrik, Germany). Deviating from the manufacturers’ recommendations, restorations with reduced minimum material thicknesses (MMT) were fabricated: group 1, MMT = 0.5–0.74 mm ( n  = 31); group 2, MMT = 0.75–1.0 mm ( n  = 30). For luting, a self-adhesive cement (SAC) or a total-etch technique with a composite cement (TEC) was applied. Statistical evaluation was performed by time-to-event analysis (Kaplan–Meier). Possible covariates of the survival (SVR) and success rates (SCR), evaluated in a Cox regression model, were MMT, restoration position (premolar/molar), and cementation technique (SAC vs. TEC). Results Forty patients (54 restorations, premolars, n  = 23; molars, n  = 31) participated in the 5-year follow-up. Five losses due to ceramic fractures occurred in group 1 ( n  = 28) (SVR: 83.0% [95% confidence interval (CI): 0.71–0.96]). Group 2 ( n  = 26) showed no losses (SVR: 100%). The success rate for partial crowns placed on premolars was 100% and 69% (95% CI: 0.54–0.84) for molar restorations. Recementation was required in 4 restorations with SAC (SCR: 86% [95% CI: 0.73–0.99]; SCR-DC: 100%). Restorations in group 2 showed a significantly reduced risk of material fracture hazard ratio (HR) = 0.09, p  = 0.0292) compared with the restorations in group 1. Molar partial crowns showed an increased risk for a clinical intervention (HR = 5.26, p  = 0.0222) compared to premolar restorations. Conclusions Material thickness and position of the restoration are risk factors influencing the survival and success rate of ZLS-ceramic partial crowns. Clinical relevance Observation of an MMT of at least 0.75–1.0 mm for ZLS-ceramics is essential to avoid material-related fractures. Clinical trial registration : German Clinical Trails Register (trial number: DRKS00005611)"],["dc.description.abstract","Abstract Objectives A university-based randomized clinical study evaluated the 5-year performance of chairside-fabricated zirconia-reinforced lithium silicate (ZLS)-ceramic partial crowns. Material and methods Forty-five patients were restored with 61 chairside-fabricated ZLS-restorations (Cerec SW 4.2, Dentsply Sirona, Germany; Vita Suprinity, Vita Zahnfabrik, Germany). Deviating from the manufacturers’ recommendations, restorations with reduced minimum material thicknesses (MMT) were fabricated: group 1, MMT = 0.5–0.74 mm ( n  = 31); group 2, MMT = 0.75–1.0 mm ( n  = 30). For luting, a self-adhesive cement (SAC) or a total-etch technique with a composite cement (TEC) was applied. Statistical evaluation was performed by time-to-event analysis (Kaplan–Meier). Possible covariates of the survival (SVR) and success rates (SCR), evaluated in a Cox regression model, were MMT, restoration position (premolar/molar), and cementation technique (SAC vs. TEC). Results Forty patients (54 restorations, premolars, n  = 23; molars, n  = 31) participated in the 5-year follow-up. Five losses due to ceramic fractures occurred in group 1 ( n  = 28) (SVR: 83.0% [95% confidence interval (CI): 0.71–0.96]). Group 2 ( n  = 26) showed no losses (SVR: 100%). The success rate for partial crowns placed on premolars was 100% and 69% (95% CI: 0.54–0.84) for molar restorations. Recementation was required in 4 restorations with SAC (SCR: 86% [95% CI: 0.73–0.99]; SCR-DC: 100%). Restorations in group 2 showed a significantly reduced risk of material fracture hazard ratio (HR) = 0.09, p  = 0.0292) compared with the restorations in group 1. Molar partial crowns showed an increased risk for a clinical intervention (HR = 5.26, p  = 0.0222) compared to premolar restorations. Conclusions Material thickness and position of the restoration are risk factors influencing the survival and success rate of ZLS-ceramic partial crowns. Clinical relevance Observation of an MMT of at least 0.75–1.0 mm for ZLS-ceramics is essential to avoid material-related fractures. Clinical trial registration : German Clinical Trails Register (trial number: DRKS00005611)"],["dc.identifier.doi","10.1007/s00784-021-04132-y"],["dc.identifier.pii","4132"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/89055"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-455"],["dc.relation.eissn","1436-3771"],["dc.relation.issn","1432-6981"],["dc.title","Prospective clinical evaluation of chairside-fabricated zirconia-reinforced lithium silicate ceramic partial crowns—5-year results"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

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[["dc.bibliographiccitation.firstpage","183"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Journal of Periodontal & Implant Science"],["dc.bibliographiccitation.volume","50"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Nordlohne, Marc"],["dc.contributor.author","Leha, Andreas"],["dc.contributor.author","Renvert, Stefan"],["dc.contributor.author","Schmalz, Gerhard"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2021-04-14T08:25:00Z"],["dc.date.available","2021-04-14T08:25:00Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.5051/jpis.2020.50.3.183"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81488"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2093-2286"],["dc.relation.issn","2093-2278"],["dc.title","Risk indicators for mucositis and peri-implantitis: results from a practice-based cross-sectional study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","487"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Esthetic and Restorative Dentistry"],["dc.bibliographiccitation.lastpage","495"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Rinke, Sven"],["dc.contributor.author","Bettenhäuser‐Hartung, Lara"],["dc.contributor.author","Leha, Andreas"],["dc.contributor.author","Rödiger, Matthias"],["dc.contributor.author","Schmalz, Gerhard"],["dc.contributor.author","Ziebolz, Dirk"],["dc.date.accessioned","2021-04-14T08:25:24Z"],["dc.date.available","2021-04-14T08:25:24Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1111/jerd.12597"],["dc.identifier.eissn","1708-8240"],["dc.identifier.issn","1496-4155"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81620"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1708-8240"],["dc.relation.issn","1496-4155"],["dc.title","Retrospective evaluation of extended glass‐ceramic ceramic laminate veneers after a mean observational period of 10 years"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]