ArticleBMC oral health2026
Innovative design of a novel combined intraosseous-subperiosteal hybrid implant for severe atrophic edentulous dentition: a finite element analysis.
Article in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThis study proposes a novel combined intraosseous-subperiosteal hybrid implant to rehabilitate severely atrophic edentulous mandibles. We aimed to elucidate its biomechanical behavior through finite element analysis.
methodsUsing CBCT data from an edentulous patient, we reconstructed a 3D mandibular model. We designed intraosseous fixtures tailored to the residual bone volume and fused them with superstructure abutments and a customized subperiosteal titanium mesh using 3-matic software. Four finite element models were assembled, varying in implant design and abutment count. These models were subjected to four loading conditions: anterior vertical, unilateral molar vertical, bilateral molar vertical, and unilateral molar lateral occlusions. Biomechanical performance was assessed by evaluating the maximum and minimum principal stresses in the peri-implant bone and the von Mises stresses in the prosthetic components.
resultsUnder simulated masticatory loads, the novel combined intraosseous-subperiosteal hybrid implant exhibited stress levels well within the elastic range of the material, avoiding plastic deformation. Notably, the six-abutment configuration proved superior under posterior loading, reducing peak von Mises stress in screws by roughly 33% and in implants by 25.5% relative to ultra-short implants.
conclusionsThe proposed combined intraosseous-subperiosteal hybrid implant exhibits superior biomechanical stability for severe mandibular atrophy scenarios. By significantly mitigating stress concentrations, particularly in the six-abutment setup, this design presents a viable clinical alternative to overcome common prosthetic rehabilitation challenges.
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