Mechanical effects of taper angles in implant–abutment connection: a finite element study
Miho Tokumoto, Tatsuya Matsuzaki, Nobuo Sakai, Ikiru Atsuta, Yasunori Ayukawa
TL;DR
This study uses computer modeling to show how the angle of dental implant connections affects their mechanical performance and stability.
Contribution
The paper introduces a finite element analysis to evaluate the impact of varying taper angles on implant-abutment mechanics.
Findings
Smaller taper angles (8°, 15°) maintain press-fit after preload release, unlike larger angles (18°, 22°).
Lower taper angles increase abutment displacement, stresses, and bolt load loss.
Horizontal bidirectional loading has the greatest mechanical effect compared to other directions.
Abstract
To analyze how the taper angle (defined here as the half‑angle per side) influences the mechanics of the implant–abutment connection using finite element analysis. Three‑dimensional finite element models (implant body, abutment, and screw) with taper angles of 8°, 15°, 18°, and 22° were established in ABAQUS/CAE. All components were modeled as linearly elastic Ti‑6Al‑4 V (E = 110 GPa, ν = 0.35). Frictional contact (μ = 0.3) was assigned at the taper and screw interfaces. A bolt load of 605 N (equivalent to 35 Ncm) was applied and then released to assess the press‑fit retention. Under the maintained preload, 100-N vertical and horizontal loads (unidirectional and bidirectional) were applied for five cycles. The primary outcomes are the abutment axial displacement, implant von Mises stress, bolt load change, and microgap size. Smaller taper angles (8°, 15°) retained press‑fit after…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 10
Figure 11
Figure 12
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDental Implant Techniques and Outcomes · Dental materials and restorations · Facial Trauma and Fracture Management