Implant Dentistry

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Implant Dentistry:
doi: 10.1097/ID.0b013e318292625f
Basic and Clinical Research

An Evaluation of New Designs in Implant-Abutment Connections: A Finite Element Method Assessment

Covani, Ugo MD, DDS*; Ricci, Massimiliano DDS, PhD; Tonelli, Paolo DDS, MD; Barone, Antonio DDS, PhD, MSc§

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Purpose: This research sought first to evaluate the differences in the finite element method (FEM) analysis of 4 different implant surfaces, including internal and external connections of the same manufacturer with additional modifications.

Methods: In this study, 4 dental implants from the same manufacturer were compared. A connection system was modified with a collar to improve its stability. A nonlinear dynamic analysis by FEM was used to calculate the transient response of the dental implant systems.

Results: The results of FEM analysis indicated that the implant-modified configuration is more efficient in loading support when compared with the others.

Conclusion: In the present research, 4 different types of connections were evaluated: a modified internal hex connection with a collar (to increase stability), an internal hex connection, a standard connection without hex, and an external connection. These data demonstrated that the internal hex connection with the modification of the manufacturer's original is much more resistant to loosening and/or distortion than the traditional hex.

© 2013 by Lippincott Williams & Wilkins, Inc.


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