title: Evaluation of stability of surface-treated mini-implants in diabetic rabbits.
abstract: Introduction. The purpose of this study was to investigate effects of surface treatment of mini-implants in diabetes-induced rabbits by comparing osseointegration around mini-implants. Methods. Twelve New Zealand white rabbits were divided into two groups (alloxan-induced diabetic group and control group). A total of 48 mini-implants were placed after four weeks of diabetic induction. 24 mini-implants were surface-treated with SLA (sandblasted with large grit, and acid etched) and the remaining 24 mini-implants had smooth surfaces. Four weeks after placement, 32 mini-implants were removed from 4 control and 4 diabetic rabbits. Insertion and removal torques were measured. The remaining 16 mini-implants from the two groups were histomorphometrically analyzed. Results. Maximum insertion torque showed no difference between diabetic and control groups, but total insertion energy was higher in control group. In surface-treated mini-implants, maximum removal torque was higher in both diabetic and control groups. Bone-implant contact (BIC) was increased in the control group when compared to the diabetic group. Surface-treated group had higher BIC than smooth surface group in both control and diabetic groups. However, there was no significantly statistical difference. Conclusions. Type 1 diabetes mellitus and surface treatment method of mini-implant affected primary stability of mini-implants. In addition, the use of orthodontic mini-implants in a diabetic patient is likely to show results similar to the healthy patient.
authors: Department of Orthodontics, The Catholic University of Korea, Seoul, Republic of Korea.
authors: Nam-Hee
authors: NH
authors: Oh
authors: Department of Pediatrics, School of Medicine, Chosun University, 30-1 Hak-dong, Dong-gu, Gwangju 501-717, Republic of Korea.
authors: Eun-Young
authors: EY
authors: Kim
authors: Department of Prosthodontics, School of Dentistry, Kyung Hee University, Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
authors: Janghyun
authors: J
authors: Paek
authors: Department of Orthodontics, The Catholic University of Korea, Seoul, Republic of Korea.
authors: Yoon-Ah
authors: YA
authors: Kook
authors: Department of Dentistry, National Medical Center of Korea, 245 Euljiro, Jung-gu, Seoul 100-799, Republic of Korea.
authors: Do-Min
authors: DM
authors: Jeong
authors: Department of Dentistry, Korea University, 80 Guro-dong, Guro-gu, Seoul 152-703, Republic of Korea.
authors: Il-Sik
authors: IS
authors: Cho
authors: Division of Orthodontics, School of Dentistry, University of California San Francisco, 707 Parnassus Avenue, San Francisco, CA 94143, USA.
authors: Gerald
authors: G
authors: Nelson