J Korean Acad Periodontol.  2009 Sep;39(3):339-348. 10.5051/jkape.2009.39.3.339.

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

• Kim DH
• Pang EK
• Kim CS
• Choi SH
• Cho KS

• KMID: 2212148
• DOI: http://doi.org/10.5051/jkape.2009.39.3.339

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.

Keyword

bone regeneration; dental implant; osseointegration

MeSH Terms

Bone Regeneration
Dental Implants
Humans
Osseointegration
Torque
Transplants
Dental Implants

Figure

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  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)

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  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)

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  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)

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  Figure 4 Evolution of implant stability between implant placement and 12 weeks for implant placed in the anterior area and in the posterior area.

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  Figure 5 ISQ readings for different implant lengths at surgery and 3 months. *: Statistically significant difference between surgery and 3 months (P < 0.05)

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  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)

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  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)

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  Figure 8 Correlation between age and ISQ value during 3 months (P > 0.05).

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  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)

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  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)

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  Figure 11 Correlation between insertion torque and ISQ value at surgery (P < 0.05).

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

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  Figure 13 Correlation between insertion torque and ISQ value during 3 months (P > 0.05).

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