Comparing static, dynamic and impact loading behavior of biomimetic porous dental implants with conventional dental implants (3d finite element analysis)
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Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Background: Porous structures instead of bulk structures have been suggested for implants because porous structures have elactic modulus similar to natural bone and allow bone tissue ingrowth. But there are limited studies to simulate porous implants with different amount of porosity at different locations The purpose of this study was to evaluate the stress distribution levels at cortical and spongious bone tissue that occurred around commercially available dental implants and four different biomimetic implant design with various porous parts and porosity amounts.Methods: 3-dimensional finite element analysis was conducted using mathematical models of unilateral 3-unit cantilever fixed partial dentures (FPD) subjected to vertical and oblique rotated static, dynamic and impact occlusal loads. Vertical load of 300 N was applied to the model over the central fossa of the crowns. Oblique load of 50 N were applied per tooth over the functional palatinal tubercule at an angle of 45 °.Results: Impact loading conditions create excessive stress values at distal dense titanium implants (1030 MPa). This was more than the ultimate tensile strength of dense titanium alloy Ti-6Al-4V (930 MPa). It might be summarized as fully porous and middle section porous implants showed lower stress values at distal implant for all loading conditions.Conclusion: The location of porosity is more critical than the amount of porosity for stress distribution. The distributions of stress at implants and surrounding bone mainly depended on the location of the porosity. Impact loading is a critical parameter for implant-supported prosthesis. Observance and prevention of impact loading should be considered for designing biomimetic porous implants. The porous biomimetic implant design with porous middle sections was the most successful design to decrease impact loading stress.
Açıklama
Anahtar Kelimeler
Diş Hekimliği, Malzeme Bilimleri, Biyomalzemeler
Kaynak
Selcuk Dental Journal
WoS Q Değeri
Scopus Q Değeri
Cilt
7
Sayı
3
