1. A healing period increases mini-implant stability in growing rats
- Author
-
Mitsuru Motoyoshi, Seil Son, Hiroyuki Takenouchi, Shinya Yano, Mizuki Inaba, Yoshinori Arai, Saori Yano, and Noriyoshi Shimizu
- Subjects
Male ,Wound Healing ,Tibia ,business.industry ,Dentistry ,Prostheses and Implants ,X-Ray Microtomography ,Rats ,Mini implants ,Male rats ,Animals ,Medicine ,Rats, Wistar ,business ,General Dentistry - Abstract
We assessed the stability of orthodontic mini-implants in young rats. Male rats with mean ages of 6 weeks (n = 16) and 20 weeks (n = 16) were divided into four groups (n = 8 each). In the 6- and 20-week immediate-loading groups, immediately after placement, mini-implants were exposed to an experimental traction force for 2 weeks. In the 6- and 20-week healing groups, the force was applied for 2 weeks after a 6-week healing period. Right tibiae served as the test limbs and the left tibiae as controls. A Periotest device was used to measure mini-implant mobility after traction, and Tukey's test was used to compare Periotest values among groups. The results showed significantly greater mobility in the 6-week immediate-loading group than in the 20-week imme- diate-loading and 6- and 20-week healing groups, and significantly less mobility in the 6-week healing group than in the 20-week immediate-loading group (P < 0.05). Mini-implants were stable during the healing period. The results indicate that mini-implants can be used for orthodontic anchorage in juvenile patients if the duration of healing is sufficient. (J Oral Sci 56, 113-118, 2014) more...
- Published
- 2014
- Full Text
- View/download PDF