Is there a difference between the primary stability of anodized and non-anodized mini-screws subjected to repeated cycles of autoclave sterilization?
Abstract
Objective: To determine if autoclave sterilization has any deleterious effects on the clinical stability of anodized versus non-anodized mini-screws.
Materials and Methods: Thirty anodized and thirty non-anodized Aarhus System mini-screws (American Orthodontics, Sheboygan, WI) were utilized. Each group was divided into three test groups. In each group, mini-screws that were sterilized once using a steam autoclave (Statim 5000, SciCan USA, Canonsburg, Pa) served as the control group (n=10). The other two test groups involved mini-screws that were subjected to a repeated cycles of sterilization for five (n=10) and ten (n=10) times. All sixty mini-screws were inserted at a 90° angle into custom-designed synthetic blocks that simulated the average mandible of a healthy adult. The maximum insertion torque and the lateral displacement at 0.025, 0.05, 0.1, 0.25, 0.5, and 1 mm were recorded for each sample and subjected to statistical testing. A two-way ANOVA, and a three-way mixed ANOVA were used for statistical analyses.
Results: Maximum insertion torque values displayed significant differences between the anodized and non-anodized groups (p<0.001) as well as the sterilization cycles (p<0.001). No significant group and cycle interaction was observed. No significant differences were found between the groups and sterilization cycles in the evaluation of the lateral displacement test. However, there was a significant group/cycle/displacement interaction (p<0.001).
Conclusion: Surface treatment of mini-screws with anodization produced differences when compared to standard surface mini-screws following autoclave sterilization. The differences between the two types of mini-screws did not indicate a potential stability concern.
Keywords
References
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Abstract
References
- 1. Petrey JS, Saunders MM, Kluemper GT, Cunningham LL, Beeman CS. Angle Orthod 2010;80:634-641.
- 2. El H, Kan H, Adiloglu I, Aktas G, Kocadereli İ. Orthodontic treatment of relapse using the preinserted endosseous dental implants. Cumhuriyet Dent J 2011;14:119-124.
- 3. Hyde JD, King GJ. Survey of orthodontists’ attitudes and experiences regarding miniscrew implants. J Clin Orthod 2010;44:481- 486.
- 4. Motoyoshi M, Hirabayashi M, Uemura M, Shimizu N. Recommended placement torque when tightening an orthodontic miniimplant. Clin Oral Impl Res 2006;17:109-114.
- 5. Pithon MM, Nojima MG, Nojima LI. In vitro evaluation of insertion and removal torques of orthodontic miniimplants. Intl J Oral Max. Surg 2011;40:80-85.
- 6. Baumgaertel S. Predrilling of the implant site: Is it necessary for orthodontic mini-implants? Am J Orthod Dentofacial Orthop 2010;137:825-829.
- 7. Cleveland J, Kohn W. CDC weighs in on TADs. Am J Orthod Dentofacial Orthop 2009;136:622- 623.
- 8. Scholz RP, Cook A. Sterilization requirements for the placement of temporary anchorage devices. Am J Orthod Dentofacial Orthop 2009;135:S20-S22.
- 9. Smith GA, Von fraunhofer JA, Casey GR. The effect of clinical use and sterilization on selected orthodontic archwires. Am J Orthod Dentofacial Orthop 1992;102:153- 159.
- 10. Doundoulakis JH. Surface analysis of titanium after sterilization: Role in implant-tissue interface and bioadhesion. Journal of Prosthetic Dentistry 1987;58(4):471-478.
- 11. Hartman LC, Meenaghan MA, Norman GS, Hawker PB. Effects of pretreatment sterilization and cleaning methods on materials properties and osseoinductivity of a threaded implant. Int J Oral Maxillofac Implants 1989;4:11-18.
- 12. Keller JC, Draughn RA, Wightman JP, Dougherty WJ, Meletiou SD. Characterization of sterilized CP titanium implant surfaces. Int J Oral Maxillofac Implants 1990;5:360-367.
- 13. Akyalcin S, McIver HP, English JD, Ontiveros JC, Gallerano RL. Effects of repeated sterilization cycles on primary stability of orthodontic mini- screws. Angle Orthod 2013;83:674- 679.
- 14. Trisi P, Rebaudi A. Progressive bone adaptation of titanium implants during and after orthodontic load in humans. Int J Periodontics Restorative Dent 2002;22:31-43.
- 15. Wehrbein H, Merz BR, Hammerle CH, Lang NP. Bone to implant contact of orthodontic implants in humans subjected to horizontal loading. Clin Oral Implants Res 1998;9:348–353.
- 16. Cheng SJ, Tseng IY, Lee JJ, Kok SH. A prospective study of the risk factors associated with failure of mini-implants used for orthodontic anchorage. Int J Oral Maxillofac Implants 2004;19:100-106.
- 17. Liou EJ, Pai BC, Lin JC. Do miniscrews remain stationary under orthodontic forces? Am J Orthod Dentofacial Orthop 2004;126:42–47.
Details
| Primary Language | English |
|---|---|
| Journal Section | Original Research Articles |
| Authors | |
| Publication Date | May 2, 2014 |
| Submission Date | June 14, 2013 |
| Published in Issue | Year 2014 |
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