Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 106923 |
| Fachzeitschrift | Journal of the Mechanical Behavior of Biomedical Materials |
| Jahrgang | 165 |
| Frühes Online-Datum | 8 Feb. 2025 |
| Publikationsstatus | Elektronisch veröffentlicht (E-Pub) - 8 Feb. 2025 |
Abstract
To improve longevity and performance of dental implants by reducing stress-shielding, a modification of the internal structure of the implant can be a solution. In this paper the inner design of the implant is generated either using a topology optimization approach or an approach based on TPMS lattice structures. These approaches aim to maintain long-term stability and to reduce stress-shielding. For both approaches, the mechanostat model was applied to investigate the influence of the inner structure to the surrounding bone tissue and compare the standard uniform implant. For the investigation an ANSYS model was used with material parameters obtained from a mechanical test of additively manufactured Ti[sbnd]6Al[sbnd]4V. Compared to the uniform implant, the topology-optimized implant showed 20% less stress-shielding, and the implant with triply periodic minimal surface structures (TPMS) showed 15% less stress-shielding. Further, the long-term-stability was investigated by introducing a high-cycle fatigue material model. Despite a change in the internal structure and a 45% reduction in the mass of the topology-optimized implant, the cycle numbers specified in the DIN EN ISO 14801 standard were fulfilled.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Biomaterialien
- Ingenieurwesen (insg.)
- Biomedizintechnik
- Ingenieurwesen (insg.)
- Werkstoffmechanik
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in: Journal of the Mechanical Behavior of Biomedical Materials, Jahrgang 165, 106923, 05.2025.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Reduction of stress-shielding and fatigue-resistant dental implant design through topology optimization and TPMS lattices
AU - Kök, Hüray Ilayda
AU - Kick, Miriam
AU - Akbas, Osman
AU - Stammkötter, Sebastian
AU - Greuling, Andreas
AU - Stiesch, Meike
AU - Walther, Frank
AU - Junker, Philipp
N1 - Publisher Copyright: © 2025 The Authors
PY - 2025/2/8
Y1 - 2025/2/8
N2 - To improve longevity and performance of dental implants by reducing stress-shielding, a modification of the internal structure of the implant can be a solution. In this paper the inner design of the implant is generated either using a topology optimization approach or an approach based on TPMS lattice structures. These approaches aim to maintain long-term stability and to reduce stress-shielding. For both approaches, the mechanostat model was applied to investigate the influence of the inner structure to the surrounding bone tissue and compare the standard uniform implant. For the investigation an ANSYS model was used with material parameters obtained from a mechanical test of additively manufactured Ti[sbnd]6Al[sbnd]4V. Compared to the uniform implant, the topology-optimized implant showed 20% less stress-shielding, and the implant with triply periodic minimal surface structures (TPMS) showed 15% less stress-shielding. Further, the long-term-stability was investigated by introducing a high-cycle fatigue material model. Despite a change in the internal structure and a 45% reduction in the mass of the topology-optimized implant, the cycle numbers specified in the DIN EN ISO 14801 standard were fulfilled.
AB - To improve longevity and performance of dental implants by reducing stress-shielding, a modification of the internal structure of the implant can be a solution. In this paper the inner design of the implant is generated either using a topology optimization approach or an approach based on TPMS lattice structures. These approaches aim to maintain long-term stability and to reduce stress-shielding. For both approaches, the mechanostat model was applied to investigate the influence of the inner structure to the surrounding bone tissue and compare the standard uniform implant. For the investigation an ANSYS model was used with material parameters obtained from a mechanical test of additively manufactured Ti[sbnd]6Al[sbnd]4V. Compared to the uniform implant, the topology-optimized implant showed 20% less stress-shielding, and the implant with triply periodic minimal surface structures (TPMS) showed 15% less stress-shielding. Further, the long-term-stability was investigated by introducing a high-cycle fatigue material model. Despite a change in the internal structure and a 45% reduction in the mass of the topology-optimized implant, the cycle numbers specified in the DIN EN ISO 14801 standard were fulfilled.
KW - Constitutive laws
KW - Dental implant
KW - Fatigue behavior
KW - Finite Element Method
KW - Mechanical properties
KW - Topology optimization
UR - http://www.scopus.com/inward/record.url?scp=85217380342&partnerID=8YFLogxK
U2 - 10.1016/j.jmbbm.2025.106923
DO - 10.1016/j.jmbbm.2025.106923
M3 - Article
VL - 165
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
SN - 1751-6161
M1 - 106923
ER -