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KMID : 1023820090010010031
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The Journal of Advanced Prosthodontics
2009 Volume.1 No. 1 p.31 ~ p.36
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A comparison of the implant stability among various implant systems: clinical study
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Kim Jae-Min
Kim Sun-Jong
Han In-Ho
Shin Sang-Wan
Ryu Jae-Jun
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Abstract
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Purpose: To determine the change in stability of single-stage, three different design of implant systems in humans utilizing resonance fre-quency analysis for early healing period (24 weeks), without loading.
Materials and Methods: Twenty-five patients were included into this study. A total of 45 implants, three different design of implant systems (group A,C,R) were placed in the posterior maxilla or mandible. The spe- cific transducer for each implant system was used. ISQ (implant stability quotient) reading were obtained for each implant at the time of surgery,3, 6, 8, 10, 12, 24 weeks postoperatively. Data were analyzed for different implant type, bone type, healing time, anatomical locations.
Results: For each implant system, a two-factor mixed-model ANOVA demonstrated that a significant effect on ISQ values (group A = 0.0022, C = 0.017, R = 0.0018). For each implant system, in a two-factor mixed model ANOVA, and two-sample t-test, the main effect of jaw position (P > .005) on ISQ values were not significant.
Conclusions: All the implant groups A, C and R, the change patterns of ISQ over time differed by bone type. Implant stability increased greatly between week 0 and week six and showed slow increase between week six and six months (plateau effect).
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KEYWORD
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Osseointegration, Implant stability, Magnetic resonance frequency analysis, Bone quality type
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