Document Detail

An in vitro study of implant--tooth-supported connections using a robot test system.
MedLine Citation:
PMID:  10396694     Owner:  NLM     Status:  MEDLINE    
Many unsolved problems in dental implant research concern the interfacial stress distributions between the implant components, as well as between the implant surface and contacting bone. To obtain a mechanical understanding of how vertical and horizontal occlusal forces are distributed in this context, it is crucial to develop in vitro testing systems to measure the force transmission between dental implants and attached prostheses. A new approach to such testing, involving a robotic system, is described in this investigation. The system has been designed to produce simulated mandibular movements and occlusal contact forces so that various implant designs and procedures can be thoroughly tested and evaluated before animal testing or human clinical trials. Two commonly used fixed prosthesis designs used to connect an implant and a tooth, a rigid connection and a nonrigid connection, were fabricated and used for experimental verification. The displacement and force distributions generated during simulated chewing activities were measured in vitro. Force levels, potentially harmful to human bone surrounding the connected dental implant and tooth, were analyzed. These results are useful in the design of prostheses and connecting components that will reduce failures and limit stress transfer to the implant/bone interface.
L Wang; J P Sadler; L C Breeding; D L Dixon
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of biomechanical engineering     Volume:  121     ISSN:  0148-0731     ISO Abbreviation:  J Biomech Eng     Publication Date:  1999 Jun 
Date Detail:
Created Date:  1999-09-28     Completed Date:  1999-09-28     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7909584     Medline TA:  J Biomech Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  290-7     Citation Subset:  IM    
College of Engineering, Center for Robotics and Manufacturing Systems, University of Kentucky, Lexington 40508, USA.
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MeSH Terms
Computer Simulation
Dental Implants*
Dental Prosthesis, Implant-Supported*
Dental Stress Analysis / methods
Denture Design*
Denture, Partial, Fixed
Robotics / instrumentation*
Stress, Mechanical
Grant Support
R15 DE 10176-01A1/DE/NIDCR NIH HHS
Reg. No./Substance:
0/Dental Implants

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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