The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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THE INFLUENCING FACTORS OF $PERIOTEST^(R)$ VALUE AND IMPLANT STABILITY QUOTIENT

$Periotest^(R)$ Value와 Implant Stability Quotient에 영향을 미치는 요소

  • Yi Young-Ah (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Cha In-Ho (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Lee Ho-Yong (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Han Dong-Hoo (Department of Prosthodontics, College of Dentistry, Yonsei University)
  • 이영아 (연세대학교 치과대학 치과보철학교실) ;
  • 차인호 (연세대학교 치과대학 치과보철학교실) ;
  • 이호용 (연세대학교 치과대학 치과보철학교실) ;
  • 한동후 (연세대학교 치과대학 치과보철학교실)
  • Published : 2006.02.01
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Abstract

Statement of problem: $Periotest^(R)\;and\;Osstell^{TM}$ were known as the most objective and quantitative mobility tests available for evaluating stability of implant in vivo. Although a correlation between PTV widely used and ISQ recently introduced exist, a PTV was corresponded to various ISQ. A correct evaluation of implant stability could be obtained only after one has a thorough understanding of the limitations of devices and factors that affect measurements. Purpose: The purpose of this study was to investigate the causes of variables in the values obtained with these two tests. Material and method: A total of 333 implants 134 $Br{\aa}nemark$, 5 Silhouette and 194 ITI implants were investigated. Result: 1. There was a correlation between PTV and ISQ (Spearman correlation =0.39, p<0.0001) 2. The factors that affected ISQ were diameter of implant future, location of implant and implant system (submerged type vs non-submerged type). 3. The factors that affected W were dimeter of implant future, location of implant, and elapsed time after implant placement. 4. There was no significant difference between different surface treatments of RBM, smooth surface and ti-unite on PTY and ISQ. 5. In radiographic finding, no saucerization or bone resorption has been detected in implants with ISQ values that were above the average level of each PTV. These higher values had higher bone densities around the implant fixture. Saucerization was observed in the most impants with ISQ values that were below the average level of each PTV. Conclusion: There was a correlation between ISQ and PTV. However, each measuring methods had factors influencing the measured values. PTV were less sensitive to marginal bone resorption and influenced with the striking point on an implant to the level of bone. With ISQ, the height of implant from bone level to transducer should be considered.

Keywords

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