title: Comparison of the mechanical properties of 2 prosthetic mini-implants.
abstract: Two prosthetic mini-implants (MTI and MDI), which have very similar shapes, are widely used. In this investigation, the mechanical and physical properties of 2 prosthetic mini-implants were investigated. The flexural properties were measured with a universal testing machine. The surface image was observed by SEM with EDX. X-ray analyses were performed. The maximum strength and proportion limit for the different implants differed significantly (P <0.01); however, elastic modulus did not differ significantly (P >0.01). Although the surface of the MTI was smooth, the MDI had a rough surface. The elemental analysis detected titanium (Ti) in the MTI, and Ti, aluminum, and vanadium in the MDI. From the x-ray diffraction pattern, the MTI, which is composed of pure titanium, had a narrow, sharp Ti (syn) peak, whereas the corresponding peak for the MDI was small and broad. Although the 2 devices have similar shapes and dimensions, their surfaces and mechanical properties differ greatly. MTI is easy to remove and wrought in clinical use, and MDI is excellent in flexural properties compared with MTI. (Implant Dent 2004;13:251-256)
authors.affiliation: Department of Biomaterials Science, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima 890-8544, Japan. einak@dentb.hal.kagoshima-u.ac.jp
authors.forename: Takahito
authors.initials: T
authors.lastname: Kanie
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Nagata
authors.forename: Seiji
authors.initials: S
authors.lastname: Ban
mesh_terms: D000535:Aluminum / Q000032:analysis; D019245:Compressive Strength; D015921:Dental Implants; D017267:Dental Prosthesis Design; D003799:Dental Stress Analysis; D004548:Elasticity; D004577:Electron Probe Microanalysis; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D008904:Miniaturization; D018583:Pliability; D013499:Surface Properties; D014025:Titanium / Q000032:analysis; D014639:Vanadium / Q000032:analysis
chemical_list: D015921:Dental Implants; D014639:Vanadium; D000535:Aluminum; D014025:Titanium