Stress Distribution in All-on-4 Prostheses with Different Cantilever Lengths
Author Information
Author(s): Muacevic Alexander, Adler John R, Almjaddr Mohammd, Saker Jamal
Primary Institution: Damascus University Faculty of Dental Medicine
Hypothesis
The cantilever length in All-on-4 implant-supported prostheses affects stress distribution in the framework and surrounding bone.
Conclusion
Decreasing the cantilever length in the PEEK model will increase the stress, leading to deformation of the structure material.
Supporting Evidence
- Shorter cantilever lengths lead to increased stress in the cortical bone and implants.
- PEEK models showed similar stress distribution in spongy bone regardless of cantilever length.
- Von Mises stress values in frameworks exceeded the ultimate stress of PEEK material.
Takeaway
This study looked at how the length of a dental support affects stress on the jawbone and implants, finding that shorter supports lead to more stress.
Methodology
A 3D model of an edentulous mandible was constructed, and finite element analysis was performed to study stress distribution with cantilever lengths of 10 mm and 15 mm.
Limitations
The study is limited to biomechanical aspects and unilateral oblique occlusal forces.
Participant Demographics
A 3D model based on a cone beam computed tomography image of a 55-year-old male edentulous patient.
Digital Object Identifier (DOI)
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