가토에 식립한 산부식형 임프란트의 제거회전력 및 조직 형태학적 연구
Removal Torque Value and Histomorphometric Analysis of a Sandblasted And Acid-etched (SLA) Implants in Rabbits
이준호, 신상완, 권상호,
소속 상세정보
이준호 ( Lee Jun-Ho ) - 고려대학교 의과대학 치과학교실 보철과
신상완 ( Shin Sang-Wan ) - 고려대학교 의과대학 치과학교실 보철과
권상호 ( Kwon Sang-Ho ) - 네오바이오텍 생체재료연구소
KMID : 0602720030070010010
Abstract
The purpose of this study was to investigate hard tissue reaction of SLA implant in the rabbit femoral condyle and tibial metaphysis by means of removal torque measurements and histomorphometric analysis. Ten adult New Zealand White rabbits were used in this study. SLA 3.75-mm implants ( Test; Neobiotech Co., Seoul, Korea ) were inserted in one leg and Machined 3.75-mm implants ( Control; Neobiotech Co., Seoul, Korea ) in the other. Altogether 3 implants were inserted per leg: Two in each tibia ( penetrating are cortical layer only ) and one in each femur. A total of 60 implants (SLA implants : 30 ; Machined implants : 30 ) were inserted. After a healing time of 4 and 12 weeks, the peak removal torque values required to shear off the implants were recorded. And the percentage of direct bone-to-implant contact and the percentage of bone area inside the thread were measured by Kappa Image Base-metreo. The Student’s t-test was undertaken for statistical analysis (p<0.05). The results were as follows ; 1) The removal torque value had no statistical difference between two groups. (p>0.05). 2) SLA implant showed a significantly greater percentage of bone-to-implant contact compared to the machined implant.(p<0.05). 3) The percentage of bone area inside the thread had no statistical difference between two groups (p>0.05). The present study showed that the SLA implant surface had significantly higher bone-to-implant contact, possibly SLA implant surface elicited a significantly stronger bone reaction than machined implant surface.
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