Non-submerged type implant stability analysis during initial healing period by resonance frequency analysis

Deug-Han Kim; Eun-Kyoung Pang; Chang-Sung Kim; Seong-Ho Choi; Kyoo-Sung Cho

doi:10.5051/jkape.2009.39.3.339

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Kim, Pang, Kim, Choi, and Cho: Non-submerged type implant stability analysis during initial healing period by resonance frequency analysis

Original Article

The Journal of the Korean Academy of Periodontology

The Journal of the Korean Academy of Periodontology 2009; 39(3): 339-348.

Published online: 30 September 2009

DOI: https://doi.org/10.5051/jkape.2009.39.3.339

Non-submerged type implant stability analysis during initial healing period by resonance frequency analysis

Deug-Han Kim¹, Eun-Kyoung Pang¹, Chang-Sung Kim², Seong-Ho Choi², Kyoo-Sung Cho²

Department of Periodontology, Graduate School of Medicine, Ewha Womans University, Korea.

Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Korea.

Correspondence: Dr. Kyoo-Sung Cho. Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, 134 Shin-Chon dong, Seodaemoon-gu, Seoul, 120-752, Korea. kscho@yuhs.ac, Tel: 02-2228-3188, Fax: 02-392-0398

Received 25 June 2009 Accepted 25 August 2009

Abstract

Purpose

The purpose of the present study was to analyze the implant stability quotient(ISQ) values for Korean non-submerged type implant and determine the factors that affect implant stability.

Methods

A total of 49 Korean non-submerged type implants were installed in 24 patients, and their stability was measured by resonance frequency analysis(RFA) at the time of surgery, and 1, 2, 3, 4, 8, 12 weeks postoperatively. The data for implant site, age, sex, implant length and diameter, graft performing, bone type, and insertion torque were analyzed.

Results

The lowest mean stability measurement was at 3 weeks. There was significant difference between implant placement and 12 weeks. There was significant difference between implant placement and 12 weeks in diameters of 4.1 mm and 4.8 mm. Also, there were significant differences between diameters of 4.1 mm and 4.8 mm at implant placement and 12 weeks after surgery. This result suggests that the factor related to implant diameter may affect the level of implant stability. No statistically significant relationship was found between the resonance frequency analysis and the variables of maxilla/mandible, sex, anterior/posterior, implant length, age of patient, graft performing, bone type, insertion torque during initial healing period.

Conclusions

These findings suggest that the factor related to implant diameter may affect the variance of implant stability, and ISQ value of implant was stable enough for proved stability level during initial healing period.

Keywords: bone regeneration, dental implant, osseointegration

Figures and Tables

Figure 1

Figure 1. Change in the mean ISQ values during healing up to 12 weeks.

^*: Statistically significant change compared to surgery (P < 0.05)

Figure 2

Evolution of implant stability between implant placement and 12 weeks for implant placed in the maxilla and in the mandible.

^*: Statistically significant difference between maxilla and mandible (P < 0.05)

Figure 3

Evolution of implant stability between implant placement and 12 weeks for implant placed in the male and in the female.

^*: Statistically significant difference between male and female (P < 0.05)

Figure 4

Evolution of implant stability between implant placement and 12 weeks for implant placed in the anterior area and in the posterior area.

Figure 5

ISQ readings for different implant lengths at surgery and 3 months.

^*: Statistically significant difference between surgery and 3 months (P < 0.05)

Figure 6

ISQ readings for different implant diameters at surgery and 3 months.

^*: Statistically significant difference between surgery and 3 months (P < 0.05)

^¶: Statistically significant difference between different implant diameters at 3 months (P < 0.05)

^†: Statistically significant rate of change between different implant diameters (P < 0.05)

Figure 7

ISQ readings for different age groups of patients at surgery and 3 months.

^*: Statistically significant difference between surgery and 3 months (P < 0.05)

Figure 8

Correlation between age and ISQ value during 3 months (P > 0.05).

Figure 9

ISQ readings for absence or presence of graft at surgery and 3 months.

^*: Statistically significant difference between surgery and 3 months (P < 0.05)

Figure 10

ISQ readings for different bone types at surgery and 3 months.

^*: Statistically significant difference between surgery and 3 months (P < 0.05)

^¶: Statistically significant difference between bone types at 3 months (P < 0.05)

^§: Statistically significant difference between bone types at surgery (P < 0.05)

Figure 11

Correlation between insertion torque and ISQ value at surgery (P < 0.05).

Figure 12

Correlation between insertion torque and ISQ value at 12 weeks (P > 0.05).

Figure 13

Correlation between insertion torque and ISQ value during 3 months (P > 0.05).

Table 1

Information about Implants Placed

^*: Lekholm & Zarb classification, 1985

Table 2

Statistical Rate of Change Data for ISQ Values for Different Variables

^* : Statistically significant effective factor for rate of change between surgery and 3 months (P < 0.05)

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