Seifi M, Matini NS. Evaluation of primary stability of innovated orthodontic miniscrew system (STS): An ex-vivo study.
J Clin Exp Dent 2016;
8:e255-9. [PMID:
27398174 PMCID:
PMC4930633 DOI:
10.4317/jced.52676]
[Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 03/12/2016] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND
Stability is determined as one of the requirements in use of Temporary Anchorage Devices (TAD) in orthodontics. Miniscrew has been a widely used Bone Anchor. Compared with mini-implant that necessitates osseointegration; mechanical retention is a determining factor for primary stability of miniscrew. Studies investigated various ways to increase primary stability. The aim of this study is to introduce a new configuration of miniscrew system which is believed to obtain more primary stability.
MATERIAL AND METHODS
Freshly ovine mandibles were cut in blocks. Twenty-seven miniscrews (diameter 1.6 × 8 mm; G2, Dual Top Anchor System, Jeil Medical, Seoul, Korea) were inserted in the blocks and divided in 2 experimental groups: single miniscrew and the innovated design "Seifi Twin Screw (STS)". Primary stability was evaluated by Periotest "M"® device.
RESULTS
Independent t-test showed a significant difference between 2 experimental groups in periotest evaluation (p< 0.05). STS demonstrated higher primary stability due to its mechanical configuration and design.
CONCLUSIONS
The STS provides higher primary stability and was found to be effective in increased success rate of miniscrew systems from the standpoint of primary stability.
KEY WORDS
Anchorage procedures, anchorage techniques, orthodontic anchorage procedures, miniscrews, temporary anchorage device.
Collapse