임플란트 안정도 평가를 위한 프랙탈 측정치의 유효성에 관한 사체연구
Effectiveness of fractal value for evaluating implant stability, cadaver study
홍승범, 최연조, 전상호, 류재준,
소속 상세정보
홍승범 ( Hong Seung-Beom ) - 고려대학교 안암병원 치과 구강악안면외과
최연조 ( Choi Yeon-Jo ) - 고려대학교 안암병원 보철학교실
전상호 ( Jun Sang-Ho ) - 고려대학교 안암병원 구강악안면외과
류재준 ( Ryu Jae-Jun ) - 고려대학교 안암병원 보철학교실
KMID : 1025720160350020053
Abstract
Purpose: The purpose of this study is to evaluate correlation between fractal dimension (FD), implant stability quotient (ISQ) value and insertion torque value (ITV) regarding to implant stability
Materials and Methods: A total of 18, 4×8 mm tapered-type implant (active II, Neo-biotech, Korea) was placed at 3 human cadaver’s right and left maxillary posterior area. All cadavers have sufficient bone volume so that don't need bone graft and favorable bone quality (D2 or D3). All placement procedures have done by single operator. ITV was recorded simultaneously with implant placement. After implant placement, ISQ was measured four time from buccal and palatal side. The average of ISQ was used for analysis. FD value was gained by White&Rudolph1’s method. 50×50 pixel size region of interest (ROI) was selected at second (FD_coronal) and seventh (FD_apical) thread. For the analysis of correlation with each methods, Pearson correlation test was done with SPSS ver 20.0.
Results: Correlation analysis results of ISQ and ITV (r;0.667, P＜0.05), ISQ and FD_coronal (r; 0.604, P＜0.05), ISQ and FD_apical (r; 0.677, P＜0.05), ITV and FD-coronal (r; 0.524, P＜0.05), ITV and FD_apical (r; 0.576, P＜0.05) have revealed distinct positive correlation in all methods and the results were statistically significant.
Conclusions: The result of positive correlation of ISQ and ITV was similar with existing studies and both methods have become known as a criterion of implant stability evaluation. FD evaluated in this study is simple to gain, inexpensive and has relatively lower radiation dose compared to computed tomography (CT). Because FD can gain from periapical view. In this study, FD has distinct positive correlation with ISQ and ITV, so it is useful clinical radiographic analysis technique for implant primary stability evaluation.
키워드
Fractal dimension; Implant stability quotient; Insertion torque value; Implant stability
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