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Tooth loss can be addressed by different rehabilitative strategies. Implant-supported crowns and conventional bridges (fixed dental prostheses [FDPs]) are well established treatment alternatives. Implant therapy is sometimes impossible, however, because of patient-related risk factors or economic issues. In such cases therapy with an FDP requires extensive removal of tooth structure to provide enough space for the restoration and to ensure mechanical retention if the abutment teeth are sound. Alternatives for rehabilitation requiring minor or no preparation of the anchoring teeth are desirable. Resin-bonded bridges meet this demand for minimal invasiveness and have been used clinically successfully. Sometimes, however, patients choose a conventional FDP over a resin-bonded one (RBFDP) for esthetic reasons since the adhesive wings, which are traditionally made of a cobalt-chromium alloy, might be exposed while speaking or smiling or account for a colour change of the abutment teeth. Such patients profit from an all-ceramic RBFDP. Today, the clinical performance of different all-ceramic RBFDP designs has not yet been evaluated under randomized controlled conditions. The aim of this pilot study is to calculate the sample size that allows us to accept the hypothesis that the two designs tested are similar regarding their clinical performance with adequate statistical power.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| all-ceramic inlay-retained RBFDP | Experimental | Treatment with an all-ceramic inlay-retained RBFDP |
|
| all-ceramic RBFDP | Active Comparator | Treatment with an all-ceramic RBFDP |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| all-ceramic inlay-retained RBFDP | Device | Rehabilitation of tooth loss with an all-ceramic inlay-retained RBFDP |
|
| Measure | Description | Time Frame |
|---|---|---|
| Success | restoration/abutment teeth without intervention according to the Fédération dentaire internationale (FDI) World dental federation criteria | 24 months |
| Measure | Description | Time Frame |
|---|---|---|
| restoration and antagonist wear | wear (µm) of areas of interest at restoration and antagonists | 12 months, 24 months, 36 months |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Wolfgang Bömicke, Priv.-Doz. Dr. med. dent. | Department of Prosthodontics, University Hospital Heidelberg, University of Heidelberg | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Department of Prosthodontics, University Hospital Heidelberg, University of Heidelberg | Heidelberg | Baden-Wurttemberg | 69120 | Germany |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32924240 | Result | Bomicke W, Rathmann F, Pilz M, Bermejo JL, Waldecker M, Ohlmann B, Rammelsberg P, Zenthofer A. Clinical Performance of Posterior Inlay-Retained and Wing-Retained Monolithic Zirconia Resin-Bonded Fixed Partial Dentures: Stage One Results of a Randomized Controlled Trial. J Prosthodont. 2021 Jun;30(5):384-393. doi: 10.1111/jopr.13258. Epub 2020 Oct 4. | |
| 40339895 |
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| all-ceramic RBFDP | Device | Rehabilitation of tooth loss with an all-ceramic RBFDP |
|
| Bomicke W, Rathmann F, Rammelsberg P, Zenthofer A. Three-year performance of inlay-retained or wing-retained zirconia resin-bonded fixed partial dentures - results from a randomized clinical pilot study. J Dent. 2025 Aug;159:105807. doi: 10.1016/j.jdent.2025.105807. Epub 2025 May 6. |