The influence of implant diameter, length and design changes on implant stability quotient (ISQ) value in artificial bone

Jeong-Yol Lee; Won-Chang Lee; Min-Soo Kim; Jong-Eun Kim; Sang-Wan Shin

doi:10.4047/jkap.2012.50.4.292

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Lee, Lee, Kim, Kim, and Shin: The influence of implant diameter, length and design changes on implant stability quotient (ISQ) value in artificial bone

Original Article

The Journal of Korean Academy of Prosthodontics

The Journal of Korean Academy of Prosthodontics 2012; 50(4): 292-298.

Published online: 30 October 2012

DOI: https://doi.org/10.4047/jkap.2012.50.4.292

The influence of implant diameter, length and design changes on implant stability quotient (ISQ) value in artificial bone

Jeong-Yol Lee, DDS, PhD, Won-Chang Lee, DDS, Min-Soo Kim, DDS, Jong-Eun Kim, DDS, MSD, Sang-Wan Shin, DDS, PhD

Postgraduate School of Clinical Dentistry, Institute for Clinical Dental Research, Korea University, Seoul, Korea.

Corresponding Author: Sang-Wan Shin. Institute for Clinical Dental Research, Korea University Hospital, 97 Gurodong-gil, Guro-gu, Seoul, 152-703, Korea. +82 2 2626 1922: swshin@korea.ac.kr

Received 18 September 2012 Revised 9 October 2012 Accepted 10 October 2012

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

The purpose of this study is to ascertain the stability of the implant by comparing the effects of the change of implant diameter, length and design on implant stability quotient.

Materials and methods

To remove the variable due to the difference of bone quality, the uniform density (0.48 g/cm³) Polyuretane foam blocks (Sawbones®, Pacific Research Laboratories Inc, Vashon, Washington) were used. Implants (Implantium®, Dentium, Seoul, Korea) were placed with varying diameters (ϕ3.8, ϕ4.3 and ϕ4.8) and length (8 mm, 10 mm and 12 mm), to assess the effect on implant stability index (ISQ). Also the influence of the design of the submerged and the non-submerged (SimplelineII®, Dentium, Seoul, Korea) on ISQ was evaluated. To exclude the influence of insertion torque, a total of 60 implants (n = 10) were placed with same torque to 35 N. Using Osstell™ mentor (Integration Diagnostic AB, Sweden) ISQ values were recorded after measuring the resonant frequency, one-way ANOVA and Tukey HSD test results were analyzed. (α=0.05).

Results

1. The change of the diameter of the implant did not affect the ISQ (P>.05), but the increase of implant length increased the ISQ(P<.001). 2. The change in implant design were correlated with the ISQ, and the ISQ of submerged design was significantly higher than that of the non-submerged design(P<.05).

Conclusion

In order to increase implant stability, the longer implant is better to be selected, and on the same length of implant, submerged design is thought to be able to get a higher ISQ than the non-submerged.

Keywords: Insertion torque, Implant Stability Quotient (ISQ) value, length and type of implant, RFA (resonance frequency analysis)

Figures and Tables

Fig. 1

Artificial bone block (Sawbone®) used in this experiment.

Fig. 2

Implant fixtures used in this experiment(A: Implantium®, B: Simpleline II®, Dentium, Seoul, Korea).

Fig. 3

Measurement of ISQ value using resornance frequency analysis.

Fig. 4

ISQ values (Mean ± SD) depending upon implant diameter.

Fig. 5

ISQ values (Mean ± SD) depending upon implant length.

Fig. 6

ISQ values (Mean ± SD) depending upon implant design.

Table 1

Average material properties (Sawbones®, Pacific Research Laboratories Inc, Vashon, Washington)

^*pcf (pound per cubit feet), ^**Mpa(mega pascal)

Table 2

Implant used in this experiment (n = 60 implant)

Table 3

Mean ISQ values of implant diameter

Table 4

Mean ISQ values of implant length

^*statistically significant (P<.001).

Table 5

Mean ISQ values of implant design

^**statistically significant (P<.05).

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