Special Section Technical Briefs

Detection Device for Dental Implant Osseointegration Using Inductors and Hall Sensors1

[+] Author and Article Information
Ru-Zhen Mou

Department of Mechanical Engineering,
National Central University,
Taoyuan City 320,Taiwan

Shiou-Bair Lin

Graduate Institute of Biomedical Engineering,
National Central University,
Taoyuan City 320, Taiwan

Chin-Sung Chen

Department of Dentistry,
Sijhih Cathy General Hospital,
New Taipei City 221, Taiwan

Min-Chun Pan

Department of Mechanical Engineering/
Graduate Institute of Biomedical Engineering,
National Central University,
Taoyuan City 320, Taiwan
e-mail: pan_minc@cc.ncu.edu.tw

Accepted and presented at The Design of Medical Devices Conference (DMD2015), April 13-16, 2015, Minneapolis, MN, USA.

Manuscript received March 3, 2015; final manuscript received March 23, 2015; published online April 24, 2015. Editor: Arthur Erdman.

J. Med. Devices 9(2), 020937 (Jun 01, 2015) (3 pages) Paper No: MED-15-1130; doi: 10.1115/1.4030193 History: Received March 03, 2015; Revised March 23, 2015; Online April 24, 2015

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Fig. 1

Schematic of mechanism illustrating detection device for the measurement of dental implant structure resonance

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Fig. 2

Chirp-like ascending waveform using Morlet wavelets for the actuation of dental osseointegration detection device. (a) One complete cycle of actuation waveform composed of 30 chirps, (b) the zoom-in waveform of one chirp, (c) corresponding spectrum of (a), and (d) characterized spectrogram of actuation waveform.

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Fig. 3

(a) Experimental setup for measuring implant–bone structural resonance. A magnetic pole was used to generate induced vibration, where in (b) a capacitive displacement sensor is used to measure structural vibration for a comparison, and four arrows indicate two sets of inductor exciters (lower) and Hall sensors (upper), respectively.

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Fig. 4

Dental implants in artificial bone blocks to simulate the osseointegration of dental implant–alveolar bone structure with varied Young’s modulus and thickness of cortical bone

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Fig. 5

Frequency spectra to characterize dental implant–bone block structural resonance. The upper and lower charts of (a) 1-mm and (b) 2-mm cortical shell are using the capacitive displacement sensor and the proposed EM device, respectively, where three curves in each chart result from varied excitation through Osstell, Morlet chirps, and swept sinusoids.



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