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Comparison of the Mechanical Properties of 2 Prosthetic Mini-implants

Kanie, Takahito PhD*; Nagata, Mutsumi DDS, PhD; Ban, Seiji PhD

doi: 10.1097/01.id.0000136912.98138.c3
BASIC AND CLINICAL RESEARCH
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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)

*Research Associate, Department of Biomaterials Science, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.

†Lecturer, Department of Restorative Dentistry and Endodontology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.

‡Professor, Department of Biomaterials Science, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan.

Reprint requests and correspondence to: Takahito Kanie, PhD, Department of Biomaterials Science, Field of Oral and Maxillofacial Rehabilitation, Course for Advanced Therapeutics, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 8908544, Japan, Phone: 81-99-275-6172, Fax: 81-99-275-6178, E-mail: einak@dentb.hal.kagoshima-u.ac.jp

© 2004 Lippincott Williams & Wilkins, Inc.