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Research Article

An In-Vitro Assessment of the Reproducibility of Periotest Value and Implant Stability Quotient

Won-suk Oh, Susan Almusa, Sheldon Winkler and Harold F. Morris

Correspondence Address :

Harold F. Morris, DDS, MS
Clinical Assistant Professor
Department of Biologic & Materials Sciences
University of Michigan School of Dentistry
011 North University, Ann Arbor, MI 48109-1078
USA
Tel: 734-615-2168
Fax: 734-763-3453
Email: mharold@umich.edu

Received on: January 19, 2017, Accepted on: February 02, 2017, Published on: February 08, 2017

Citation: Won-suk Oh, Susan Almusa, Sheldon Winkler, Harold F. Morris (2017). An In-Vitro Assessment of the Reproducibility of Periotest Value and Implant Stability Quotient

Copyright: 2017 Harold F. Morris, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

  • Abstract

Abstract
Background: This in-vitro study investigated the reproducibility of Periotest values (PTVs) and Implant Stability Quotients (ISQs) among evaluators with different training and clinical experience.
Methods: Two endosseous implants (Implants I and II) were placed in each of 2 different densities of wood blocks (soft Balsa and hard Euro-Beech) to provide Standardized Test Specimens. The PTVs and ISQs of each implant were measured 9 times by each of 5 evaluators using the Periotest and Ostell. The repeated PTVs and ISQs were analyzed statistically by using a paired t test (P = .05), 1-way ANOVA (P = .05), and post hoc Tukey multiple comparison test (α = .05). 
Results: The means of PTVs were similar for Implants I and II in both Balsa and Euro-Beech (P > .05); while the ISQs were found to be significantly different (P < .05). The ANOVA and Tukey test (α = .05) demonstrated a consistency in the means of PTVs among the evaluators. The differences in the means of ISQs were small among the evaluators and narrow in the distribution of repeated data for each evaluator. 
Conclusion: The PTVs and ISQs both may indicate a clinically reliable assessment of implant stability. Although the ISQs were not consistent among the evaluators, the differences were small with a narrow distribution of repeated data.
Keywords: Implant stability, Periotest Value, Implant Stability Quotient