Wassmann, Torsten

[["dc.bibliographiccitation.firstpage","e669"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","European Journal of Dental Education"],["dc.bibliographiccitation.lastpage","e678"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Kanzow, Philipp"],["dc.contributor.author","Schuelper, Nikolai"],["dc.contributor.author","Witt, Daniela"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Sennhenn-Kirchner, Sabine"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Raupach, Tobias"],["dc.date.accessioned","2020-05-22T07:21:30Z"],["dc.date.available","2020-05-22T07:21:30Z"],["dc.date.issued","2018-06-22"],["dc.description.abstract","Introduction: Various scoring approaches for Multiple True-False (MTF) items exist. This study aimed at comparing scoring results obtained with different scoring approaches and to assess the effect of item cues on each scoring approaches' result.\r\nMaterials and methods: Different scoring approaches (MTF, Count-2, Count-3, \"Vorkauf-Method,\" PS50 , Dichotomized MTF, \"Blasberg-Method,\" Multiple response (MR), Correction for Guessing, \"Ripkey-Method,\" Morgan-Method, Balanced Scoring Method) were retrospectively applied to all MTF items used within electronic examinations of undergraduate dental students at the University Medical Center Göttingen in the winter term 2016/2017 (1297 marking events). Item quality was evaluated regarding formal parameters such as presence of cues and correctness of content. Differences between scoring results of all scoring approaches and the differences between each methods' scoring results of items with and without cues were calculated by Wilcoxon rank sum tests (P < .05).\r\nResults: Average scoring results per item highly differed between the scoring approaches and ranged from 0.46 (MR) to 0.92 (Dichotomized MTF). Presence of cues leads to significantly higher scoring in case of all scoring approaches (P < .001; +0.14 on average). However, effect of cues differed amongst scoring approaches and ranged from +0.04 (Dichotomized MTF) to +0.20 (MR).\r\nConclusion: Scoring of MTF items is complex. The data presented in this manuscript may help educators make informed choices about scoring algorithms."],["dc.identifier.doi","10.1111/eje.12372"],["dc.identifier.pmid","29934980"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65686"],["dc.language.iso","en"],["dc.relation.issn","1396-5883"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.relation.orgunit","Klinik für Mund-, Kiefer- und Gesichtschirurgie"],["dc.relation.orgunit","Poliklinik für Kieferorthopädie"],["dc.relation.orgunit","Poliklinik für Zahnärztliche Prothetik"],["dc.relation.orgunit","Klinik für Kardiologie und Pneumologie"],["dc.subject.gro","Kprim"],["dc.subject.gro","K’"],["dc.subject.gro","Multiple True-False"],["dc.subject.gro","Type X"],["dc.subject.gro","k of n"],["dc.subject.gro","scoring"],["dc.title","Effect of different scoring approaches upon credit assignment when using Multiple True-False items in dental undergraduate examinations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","206"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Prosthetic Dentistry"],["dc.bibliographiccitation.lastpage","209"],["dc.bibliographiccitation.volume","119"],["dc.contributor.author","Krohn, Sebastian"],["dc.contributor.author","Frahm, Jens"],["dc.contributor.author","Merboldt, Klaus-Dietmar"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Joseph, Arun A."],["dc.contributor.author","Bürgers, Ralf"],["dc.date.accessioned","2021-06-01T10:49:53Z"],["dc.date.available","2021-06-01T10:49:53Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.prosdent.2017.03.022"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86447"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.issn","0022-3913"],["dc.title","Diagnosis of disk displacement using real-time MRI: Clinical report of two patients"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["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"]]

[["dc.bibliographiccitation.firstpage","2225"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","European Journal of Radiology"],["dc.bibliographiccitation.lastpage","2230"],["dc.bibliographiccitation.volume","85"],["dc.contributor.author","Krohn, Sebastian"],["dc.contributor.author","Gersdorff, Nikolaus"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Merboldt, Klaus-Dietmar"],["dc.contributor.author","Joseph, Arun A."],["dc.contributor.author","Buergers, Ralf"],["dc.contributor.author","Frahm, Jens"],["dc.date.accessioned","2018-11-07T10:05:09Z"],["dc.date.available","2018-11-07T10:05:09Z"],["dc.date.issued","2016"],["dc.description.abstract","The purpose of this study was to develop and evaluate a novel method for real-time MRI of TMJ function at high temporal resolution and with two different contrasts. Real-time MRI was based on undersampled radial fast low angle shot (FLASH) acquisitions with iterative image reconstruction by regularized nonlinear inversion. Real-time MRI movies with T1 contrast were obtained with use of a radiofrequency-spoiled FLASH sequence, while movies with T2/T1 contrast employed a gradient-refocused FLASH version. TMJ function was characterized in 40 randomly selected volunteers by sequential 20 s acquisitions of both the right and left joint during voluntary opening and closing of the mouth (in a medial, central and lateral oblique sagittal section perpendicular to the long axis of the condylar head). All studies were performed on a commercial MRI system at 3 T using the standard head coil, while online reconstruction was achieved with a bypass computer fully integrated into the MRI system. As a first result, real-time MRI studies of the right and left TMJ were successfully performed in all 40 subjects (80 joints) within a total examination time per subject of only 15 min. Secondly, at an in-plane resolution of 0.75 mm and 5 mm section thickness, the achieved temporal resolution was 66.7 ms per image or 15 frames per second. Thirdly, both T1-weighted and T2/T1-weighted real-time MRI movies provided information about TMJ function such as disc position, condyle mobility and disc-condyle relationship. While T1 contrast offers a better delineation of structures during rapid jaw movements, T2/T1 contrast was rated superior for characterizing the articular disc. In conclusion, the proposed real-time MRI method may become a robust and efficient tool for the clinical assessment of TMJ function. (C) 2016 Elsevier Ireland Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.ejrad.2016.10.020"],["dc.identifier.isi","000389511400011"],["dc.identifier.pmid","27842671"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38846"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Ireland Ltd"],["dc.relation.issn","1872-7727"],["dc.relation.issn","0720-048X"],["dc.title","Real-time MRI of the temporomandibular joint at 15 frames per second-A feasibility study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3899"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Clinical Oral Investigations"],["dc.bibliographiccitation.lastpage","3909"],["dc.bibliographiccitation.volume","24"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Schubert, Andrea"],["dc.contributor.author","Malinski, Felix"],["dc.contributor.author","Rosentritt, Martin"],["dc.contributor.author","Krohn, Sebastian"],["dc.contributor.author","Techmer, Kirsten"],["dc.contributor.author","Bürgers, Ralf"],["dc.date.accessioned","2020-12-10T14:11:05Z"],["dc.date.available","2020-12-10T14:11:05Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/s00784-020-03257-w"],["dc.identifier.eissn","1436-3771"],["dc.identifier.issn","1432-6981"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/70959"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","The antimicrobial and cytotoxic effects of a copper-loaded zinc oxide phosphate cement"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","The Journal of Prosthetic Dentistry"],["dc.contributor.author","Wiechens, Bernhard"],["dc.contributor.author","Brockmeyer, Phillipp"],["dc.contributor.author","Wassmann, Torsten"],["dc.contributor.author","Rödiger, Matthias"],["dc.contributor.author","Wiessner, Andreas"],["dc.contributor.author","Bürgers, Ralf"],["dc.date.accessioned","2022-09-01T09:49:47Z"],["dc.date.available","2022-09-01T09:49:47Z"],["dc.date.issued","2022"],["dc.identifier.doi","10.1016/j.prosdent.2022.05.025"],["dc.identifier.pii","S0022391322003535"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/113532"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-597"],["dc.relation.issn","0022-3913"],["dc.title","Time of day-dependent deviations in dynamic and static occlusion: A prospective clinical study"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]