An interventional study of CAD/CAM metallic partial denture frameworks and Conventional metallic partial denture frameworks in Occlusion and Prosthesis Durability, sponsored by Cairo University. Not yet recruiting. Per ClinicalTrials.gov, last updated 2025-10-10.
Sponsored by Cairo University · Not applicable, Interventional, and Treatment
This study is aimed to compare CAD/CAM (digitally fabricated) metallic partial denture frameworks to conventionally fabricated metallic partial denture frameworks in mandibular Kennedy class-III arches in terms of abutment health and occlusal analysis
Traditional metallic partial dentures with cobalt-chromium frameworks and clasps considered a reliable choice because they're affordable, durable and have a resistance to distortion. However, the fabrication of traditional metallic partial dentures involves several manual steps, like pouring of the stone casts, surveying the hard tissue and soft tissue undercuts to choose the best path of insertion, and meticulously waxing each component (major and minor connectors, rests, clasps, and denture base retainers) directly onto the cast. This hands-on process can result in some fabrication errors, which by in turn can increase the stresses on the teeth supporting the denture (abutments) and even other non-abutment teeth.
CAD/CAM technology is increasingly being used for the fabrication of metallic partial denture frameworks; it has been highlighting in several investigations. The workflow starts with an intra oral digital scan of the oral cavity, to generate a 3D digital model, that allows for electronic surveying. The metallic partial denture frameworks are then designed virtually using specialized software, after which a wax pattern is created by milling or rapid prototyping. Then the wax pattern would be casted conventionally into metallic partial denture frameworks. The key advantages are simplifying the fabrication process, enhance the accuracy of fit, and reduce the stresses on abutment teeth, significant time savings, and reduction of the potential errors inherent in traditional multi-step lab procedures
119 studies on the registry are indexed under Prosthesis Failure; 35 are open to participants now.
This study's planned enrollment of 22 is below the median of 36 across 69 interventional studies indexed under Prosthesis Failure.
Browse Prosthesis Failure studies →Cairo University is the lead sponsor of 4,941 studies on the registry; 1,458 are open to participants now.
Of its 37 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
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The digital technology makes it much easier in fabricating the prosthesis, so by the aid of this technology we can make accurate occlusal scan and jaw relation without annoying of the patient with the impression material. The software makes it much easier in designing and planning for proper established removable metallic partial denture, with one tap we can print the designed wax pattern and continue in the conventional steps of manufacturing the metallic partial denture
Other: CAD/CAM metallic partial denture frameworks
The conventional fabricated metallic partial dentures have been the standard method for fabricating the metallic frameworks. It is a reliable treatment option for the partially edentulous patients and the most commonly used for it is advantageous. The advantages of conventional metallic partial dentures are it considered to be more rigid even if in thin sections, has higher stiffness and strength, thanks to good thermal conductivity of metal it can conduct heat and cold, can be designed to minimize tissue coverage
Other: Conventional metallic partial denture frameworks
The CAD/CAM workflow starts with scanning of the physical model (master cast) to create a 3D virtual representation. Dental professionals then digitally analyze this virtual model and design the metallic partial denture frameworks using specialized computer software. Once the design is finalized, a wax pattern of the framework is either milled or 3D printed. Then proceeding with this wax pattern to fabricate the final metal partial denture framework, either by conventional casting process, or milling of the metallic framework
The metallic partial denture frameworks have proven to be affordable and convenient treatment option for partially dentate patients for it is rigidity and durability. It can be used in thin sections and provide high strength and stiffness. However, metallic partial denture frameworks also come with several drawbacks. A significant concern for some patients is the metallic display, which can lead to poor esthetics. Other disadvantages include increased prosthesis weight, a potential metallic taste, and a tendency for plaque accumulation. Additionally, they can induce stresses on the abutment teeth
Abutment health mobility
Periotest, Periotest value (PTV) which ranges from -8 to +50
Time frame: 3 months
Gingival bleeding index
Löe and Silness Gingival Index (GI), GI scale (scores) 0 -3 (with 0 being normal and 3 being severe inflammation)
Time frame: 3 months
Occlusal Analysis
OccluSense Device, Force distribution per tooth
Time frame: 3 months
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This study is not yet recruiting, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.
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