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Using Ultrasonic Spectrometry to Estimate the Stability of a Dental Implant Phantom
KTH, School of Technology and Health (STH), Health Systems Engineering, Systems Safety and Management.ORCID iD: 0000-0002-1831-9285
KTH, School of Technology and Health (STH), Medical Engineering, Medical Imaging.
2013 (English)In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 5, 570-574 p.Article in journal (Refereed) Published
Abstract [en]

A challenging problem in dental implant surgery is to evaluate the stability of the implant. In this simulation study, an experimental phantom is used to represent a jawbone with a dental implant. It is made of a little pool filled with soft-tissue equivalent material and a disc of fresh Oakwood with a metal screw. Varying levels of contact between screw and wood are simulated by screwing in or out the screw. Initially, the screw is screwed in and fixed firmly in wood. Thereafter, the screw is screwed out, a half turn each time, to increase the gap gradually between wood and screw. Pulse-echo ultrasound is used and the power spectra of the received echo-signals are computed. These spectra are normalized then analyzed by using the partial least squares method to estimate the corresponding implant stiffness grade in terms of number of turns when beginning from the initial tight-screw state then screwing out the screw. A coefficient of determination R2 of 96.4% and a mean absolute error of ±0.23 turns are achieved when comparing real and estimated values of stiffness grades, indicating the efficiency of this approach.

Place, publisher, year, edition, pages
2013. Vol. 5, 570-574 p.
Keyword [en]
Dental Implant Stability, Partial Least Squares, Ultrasonic Spectrometry, Spectral Analysis
National Category
Medical Engineering
URN: urn:nbn:se:kth:diva-154338DOI: 10.4236/eng.2013.510B117OAI: diva2:756559

QC 20150414

Available from: 2014-10-17 Created: 2014-10-17 Last updated: 2015-04-14Bibliographically approved

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Hamid Muhammed, HamedKothapalli, Satya V.V.N
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