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Updated: Jul 14, 2026
05:26
Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
Published on: October 19, 2022
The strength of multiple major connector designs under simulated functional loading.
Todd E Pienkos1, W Jack Morris, Peter M Gronet
1US Army Prosthodontic Residency program, Fort Gordon, Ga., USA.
The Journal of Prosthetic Dentistry
|June 6, 2007
Summary
Reducing major connector dimensions in removable dental prostheses can enhance comfort and tissue health. However, smaller connectors increase deformation risk when the prosthesis is dropped.
Area of Science:
- Biomaterials Science
- Dental Prosthodontics
- Mechanical Engineering
Background:
- Removable dental prostheses (RDPs) require balancing strength, patient comfort, and tissue health.
- Research has focused on major connector strength, but not on reducing dimensions for improved patient outcomes.
Purpose of the Study:
- To determine minimum major connector dimensions for adequate functional strength in one mandibular and two maxillary connectors.
- To assess the impact of reduced dimensions on RDP framework strength and deformation.
Main Methods:
- Fabricated 60 chromium-cobalt RDP frameworks with varying major connector dimensions (lingual bar, palatal strap, A-P palatal strap).
- Tested frameworks using masticatory simulation (torsional force) and a drop test (3 feet).
- Analyzed permanent deformation using the Cochran-Armitage test (alpha=.05).
Main Results:
- A statistically significant difference in permanent deformation was observed for the palatal strap design across different dimensions.
- The palatal strap showed significant deformation in both compressive and drop tests (P=.015 and P=.044, respectively).
Conclusions:
- Reducing major connector dimensions is feasible under normal functional loads.
- Significantly reduced connector dimensions increase the risk of RDP deformation, particularly when subjected to impact.
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