Electroplated and cast double crown-retained removable dental prostheses: 6-year results from a randomized clinical trial
ObjectivesThe purpose of this study was to evaluate the clinical performance of removable dental prostheses (RDP) supported by either electroplated (EP-RDP) or cast (C-RDP) double crowns.Material and methodsFifty-four participants received a total of 60 RDP. Two hundred and seventeen abutment teeth...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2015
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| In: |
Clinical oral investigations
Year: 2015, Volume: 19, Issue: 5, Pages: 1129-1136 |
| ISSN: | 1436-3771 |
| DOI: | 10.1007/s00784-014-1335-x |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1007/s00784-014-1335-x Verlag, Volltext: https://link.springer.com/article/10.1007/s00784-014-1335-x 
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| Author Notes: | Thomas Stober, Justo Lorenzo Bermejo, Anne-Christiane Séché, Franziska Lehmann, Peter Rammelsberg, Wolfgang Bömicke |
| Summary: | ObjectivesThe purpose of this study was to evaluate the clinical performance of removable dental prostheses (RDP) supported by either electroplated (EP-RDP) or cast (C-RDP) double crowns.Material and methodsFifty-four participants received a total of 60 RDP. Two hundred and seventeen abutment teeth were provided with double crowns. The participants were randomly assigned to two groups (EP-RDP or C-RDP). Re-evaluations took place after 6 months and then once a year up to 6 years. Primary endpoint was survival time for RDP and abutment teeth; secondary endpoints were failure of facing, decementation of primary crown, and post-prosthetic endodontic treatment. T, U, and chi-squared tests were used to assess the homogeneity of the EP-RDP and C-RDP groups. Survival differences were analyzed with log-rank tests and Cox regression models; secondary endpoints were assessed by the use of logistic regression.ResultsSix-year survival was 77 % for EP-RDP and 97 % for C-RDP. Cumulative survival of abutment teeth was 85 % for EP-RDP and 91 % for C-RDP; differences between survivals in the two groups did not reach statistical significance. Survival of abutment teeth depended on tooth vitality. Failures of facings, decementations, or post-prosthetic endodontic treatments were not different between groups.ConclusionsTo identify possible differences between different double crown systems, longer follow-up periods and/or larger numbers of patients are needed.Clinical relevanceSurvival of teeth supporting double crown-retained RDP is affected by their vitality. Clinical performance was acceptable for both RDP supported by electroplated or cast double crowns. |
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| Item Description: | Published online: 11 October 2014 Gesehen am 08.06.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1436-3771 |
| DOI: | 10.1007/s00784-014-1335-x |