Wiegand, Annette E.

[["dc.bibliographiccitation.firstpage","41"],["dc.bibliographiccitation.journal","Journal of Dentistry"],["dc.bibliographiccitation.lastpage","47"],["dc.bibliographiccitation.volume","54"],["dc.contributor.author","Kanzow, Philipp"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Schwendicke, Falk"],["dc.date.accessioned","2018-11-07T10:06:35Z"],["dc.date.accessioned","2020-05-22T07:59:56Z"],["dc.date.available","2018-11-07T10:06:35Z"],["dc.date.available","2020-05-22T07:59:56Z"],["dc.date.issued","2016-08-26"],["dc.description.abstract","Objectives: Repairing instead of replacing partially defective composite or amalgam restorations might reduce the initial treatment risks and costs, but could be less advantageous long-term due to repeated re-interventions being required. This study aimed to compare the cost-effectiveness of repairing versus replacing composite or amalgam restorations.\r\nMethods: A mixed public-private-payer perspective from the German healthcare setting was adopted. A permanent molar with a three-surfaced partially defective composite or amalgam restoration in need of repair or replacement was modelled. Risks of complications after repair or complete replacement were derived by a rapid systematic literature review. The health outcome measure was tooth retention years. Costs were estimated from the German public and private fee catalogues. Monte-Carlo microsimulations were performed and incremental-cost-effectiveness ratios (ICERs) were used to express cost differences per gain or loss of effectiveness.\r\nResults: Compared with complete composite replacement, composite repairs were marginally more costly and more effective (€326 versus €321; 24.7 versus 24.0 years; ICER: €7.14). Amalgam repairs were more costly and more effective than complete replacement (€467 versus €326; 24.3 versus 23.7 years; ICER: €235). If composite repair costs were €<67 or complete replacement costs €>166, composite repair was always cost-effective. This was not the case for amalgam repair. The size of the restoration, the reason for repair/replacement, and patients' age were found to influence the cost-effectiveness.\r\nConclusions: Repair was found to be more effective, but not necessarily less costly than complete replacement of restorations.\r\nClinical significance: Repairing instead of replacing partially defective restorations is likely to retain teeth for longer compared with complete replacement. When considering cost-effectiveness, repairing composite can be recommended more strongly than repairing amalgam restorations."],["dc.identifier.doi","10.1016/j.jdent.2016.08.008"],["dc.identifier.isi","000386677200005"],["dc.identifier.pmid","27575986"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65704"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/39122"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.eissn","0300-5712"],["dc.relation.issn","1879-176X"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.subject.gro","Decision-making"],["dc.subject.gro","Economic evaluation"],["dc.subject.gro","Mathematical modelling"],["dc.subject.gro","Minimally invasive dentistry"],["dc.subject.gro","Restoration repair"],["dc.subject.gro","Restorative dentistry"],["dc.title","Cost-effectiveness of repairing versus replacing composite or amalgam restorations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","108"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Dental materials"],["dc.bibliographiccitation.lastpage","118"],["dc.bibliographiccitation.volume","36"],["dc.contributor.author","Kanzow, Philipp"],["dc.contributor.author","Wiegand, Annette"],["dc.date.accessioned","2020-05-20T13:10:38Z"],["dc.date.accessioned","2020-05-22T07:11:34Z"],["dc.date.available","2020-05-20T13:10:38Z"],["dc.date.available","2020-05-22T07:11:34Z"],["dc.date.issued","2020-11-26"],["dc.description.abstract","Objective: Our retrospective study aimed to assess the impact of repairs on the longevity of anterior and posterior direct composite restorations and to compare longevity of repaired and replacement restorations.\r\nMethods: Patient records were retrospectively screened for anterior and/or posterior composite restorations with 2+ surfaces placed in permanent teeth between 2000 and 2015. During follow-up, repaired and replaced restorations were assessed and mean annual failure rates (mAFR) calculated. Outcome was considered in three levels: Success (no further intervention), survival 1 (first repair=survival, second repair=failure) and survival 2 (more than one repair=survival, all surfaces repaired=failure). Statistical analysis was performed using Kaplan-Meier statistics, log-rank tests, and multi-variate Cox-regression analyses with shared frailty (p<0.05).\r\nResults: 8542 initial restorations placed in 3239 patients were included (4.7±4.4 years follow-up, 2.5±0.7 surfaces). Longevity of initial restorations was prolonged by repair(s) (after 10 years: success: 68.3%, mAFR: 3.7%; survival 1: 77.3%, mAFR: 2.5%; survival 2: 80.4%, mAFR: 2.2%; p<0.001). 616 repaired restorations (4.9±4.2 years follow-up, 3.5±1.0 surfaces) and 264 replacement restorations (5.6±4.1 years follow-up, 3.0±0.8 surfaces) were analyzed. Success of repaired restorations amounted to 43.4% after 10 years (mAFR: 8.0%), further repair(s) prolonged survival (survival 1: 65.7%, mAFR: 4.1%; survival 2: 74.8%, mAFR: 2.9%; p<0.001). Success of replacement restorations amounted to 48.6% after 10 years (mAFR: 7.0%), repair(s) prolonged survival (survival 1: 67.4%, mAFR: 3.9%, p=0.044; survival 2: 74.1%, mAFR: 3.0%, p=0.003).\r\nSignificance: Repairs are suitable to increase the survival of restorations; repaired restorations last as long as replacements."],["dc.identifier.doi","10.1016/j.dental.2019.11.001"],["dc.identifier.pmid","31784061"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65683"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65642"],["dc.language.iso","en"],["dc.relation.eissn","1879-0097"],["dc.relation.issn","0109-5641"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.subject.gro","Composite materials"],["dc.subject.gro","Minimally invasive dentistry"],["dc.subject.gro","Restoration repair"],["dc.subject.gro","Restorative dentistry"],["dc.subject.gro","Success"],["dc.subject.gro","Survival"],["dc.title","Retrospective analysis on the repair vs. replacement of composite restorations"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e375"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Dental Materials"],["dc.bibliographiccitation.lastpage","e381"],["dc.bibliographiccitation.volume","37"],["dc.contributor.author","Kanzow, Philipp"],["dc.contributor.author","Krois, Joachim"],["dc.contributor.author","Wiegand, Annette"],["dc.contributor.author","Schwendicke, Falk"],["dc.date.accessioned","2021-06-01T10:49:33Z"],["dc.date.available","2021-06-01T10:49:33Z"],["dc.date.issued","2021-03-02"],["dc.description.abstract","Objectives: When managing partially defective restorations, dentists can choose between repair and replacement. We aimed to assess the long-term treatment costs of repairs and replacements.\r\nMethods: Partially defective anterior and posterior composite restorations in permanent teeth had been repaired or replaced in a German university hospital and were retrospectively followed until censoring or one of the following events: (1) Extraction, (2) Major complications including placement of indirect restorations, endodontic treatments and extractions, or (3) Any complications including major complications and further direct restorations. Costs were estimated from a German mixed public-private-payer perspective. Cost-effectiveness differences were described using median-based incremental-cost-effectiveness ratios (ICERMEDIAN). Statistical analysis was performed using generalized linear mixed modeling (GLM), Chi2-test, and Wilcoxon rank-sum test (p < 0.05).\r\nResults: A total of 616 repairs in 468 patients (follow-up: 4.9 ± 4.1 years) and 264 replacements in 218 patients (follow-up: 4.8 ± 4.3) were included. While replacements were associated with higher initial treatment costs, median annualized treatment costs did not significantly differ between repair (47.58 Euro [IQR: 24.41-107.04]) and replacement (50.64 Euro [IQR: 26.30-118.78]; p > 0.05), but were higher for molars (75.53 Euro [IQR: 24.41-92.18]) than incisors (45.03 Euro [IQR: 28.19-168.50]; p = 0.011). The difference in the % of extractions, major and any complications were minimal between both groups. The mean ICERMEDIAN of replacement vs. repair was -146.8 Euro/% when extractions were considered as outcomes. Regarding major and any complications, mean ICERMEDIAN amounted to 67.6 Euro/% and 23.9 Euro/%, respectively.\r\nSignificance: Repairs and replacements of partially defective restorations showed similar long-term costs and cost-effectiveness."],["dc.identifier.doi","10.1016/j.dental.2021.02.008"],["dc.identifier.pmid","33663883"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/86333"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.issn","0109-5641"],["dc.relation.orgunit","Poliklinik für Präventive Zahnmedizin, Parodontologie und Kariologie"],["dc.subject.gro","Composite materials"],["dc.subject.gro","Cost-effectiveness"],["dc.subject.gro","Minimally invasive dentistry"],["dc.subject.gro","Restoration repair"],["dc.subject.gro","Restorative dentistry"],["dc.subject.gro","Treatment costs"],["dc.title","Long-term treatment costs and cost-effectiveness of restoration repair versus replacement"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]