Effects of repeated sterilization cycles on primary stability of orthodontic mini-screws

18Citations
Citations of this article
69Readers
Mendeley users who have this article in their library.

Abstract

Objective: To determine if repeated sterilization has deleterious effects on the clinical stability of mini-screws. Materials and Methods: Thirty each of the following mini-screws were tested: Aarhus (American Orthodontics, Sheboygan, Wisc), VectorTAS (Ormco Corporation, Orange, Calif), Dual-Top (RMO, Denver, Colo), and Ortho Anchor (KLS Martin, Jacksonville, Fla). Controls were sterilized once using a steam autoclave (Statim 5000, SciCan USA, Canonsburg, Pa). Each group of mini-screws was divided into three groups: the control (n = 10) and two test groups (n = 10, each). Test groups were cycled five and 10 times respectively. All screws were inserted into custom-designed synthetic blocks that simulated mandibular bone. Maximum insertion torque and lateral displacement force data were recorded and subjected to statistical testing. Two-way analysis of variance (ANOVA) and three-way mixed ANOVA were used for statistical analyses for maximum insertion torque data and lateral displacement force data, respectively. Level of significance was established at P < .05. Results: Insertion torque values displayed significant differences between both of the groups and sterilization cycles (P < .05). Significant differences were observed between American Aarhus mini-screws and both RMO and KLS Martin mini-screws. Ormco Vector mini-screws also differed significantly from the KLS Martin mini-screws in this comparison (P < .05). For lateral displacement, there was a significant main effect of groups, F(1,36) = 14.5 (P < .05). Significant differences were observed between American Aarhus mini-screws and all three of the other groups (P < .05). Conclusions: The examined groups displayed statistical differences of variable quality that may not affect their clinical stability. © 2013 by The EH Angle Education and Research Foundation Inc.

Author supplied keywords

Cite

CITATION STYLE

APA

Akyalcin, S., McIver, H. P., English, J. D., Ontiveros, J. C., & Gallerano, R. L. (2013). Effects of repeated sterilization cycles on primary stability of orthodontic mini-screws. Angle Orthodontist, 83(4), 674–679. https://doi.org/10.2319/082612-685.1

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free