Maximum resistance strength of the bone-bonding screw orthodontic anchorage.
- Author:
Xian-ju XIE
1
;
Yu-xing BAI
;
Ying LÜ
;
Wei-min GAO
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Bone Screws; Cyanoacrylates; Dental Cements; Dental Stress Analysis; Orthodontic Anchorage Procedures; instrumentation; Rabbits
- From: Chinese Journal of Stomatology 2009;44(9):535-537
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the maximum resistance strength of a new orthodontic anchorage system named bone-bonding screw.
METHODSThirty-six self-designed two-section bone-bonding screws were bonded to the surface of tibia in 12 rabbits with N-2-butyl cyanoacrylate. The maximum resistance strength of the screws was tested immediately, 2 weeks, 4 weeks and 8 weeks after bonding, respectively.
RESULTSThe average maximum resistance strengths of the bone-bonding screws immediately, 2 weeks, 4 weeks and 8 weeks after bonding were 11.55 (8.96, 12.73), 6.04 (1.88, 10.57), 2.30 (0, 3.24), and 49.85 (20.70, 66.01) N, respectively. The difference between each group was statistically significant (P < 0.05). The failure rate of the bone-bonding screws was 17% (6/36).
CONCLUSIONSThe maximum resistance strength of the bone-bonding screw could suffice for orthodontics.
