Influence of surface treatment on the insertion pattern of self-drilling orthodontic mini-implants.
10.4041/kjod.2011.41.4.268
- Author:
Sang Cheol KIM
1
;
Ho Young KIM
;
Sang Jae LEE
;
Cheol Moon KIM
Author Information
1. Department of Orthodontics, School of Dentistry, Wonkwang University, Wonkwang Dental Research Institute, Korea. sangkim@wonkwang.ac.kr
- Publication Type:Original Article
- Keywords:
Orthodontic mini-implant;
RBM surface treatment;
Self-drilling;
Insertion pattern
- MeSH:
Chimera;
Electrons;
Microscopy, Electron, Scanning;
Torque
- From:Korean Journal of Orthodontics
2011;41(4):268-279
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVE: The purpose of this study was to compare self-drilling orthodontic mini-implants of different surfaces, namely, machined (untreated), etched (acid-etched), RBM (treated with resorbable blasting media) and hybrid (RBM + machined), with respect to the following criteria: physical appearance of the surface, measurement of surface roughness, and insertion pattern. METHODS: Self-drilling orthodontic mini-implants (Osstem implant, Seoul, Korea) with the abovementioned surfaces were obtained. Surface roughness was measured by using a scanning electron microscope and surface-roughness-testing machine, and torque patterns and vertical loadings were measured during continuous insertion of mini-implants into artificial bone (polyurethane foam) by using a torque tester of the driving-motor type (speed, 12 rpm). RESULTS: The mini-implants with the RBM, hybrid, and acid-etched surfaces had slightly increased maximum insertion torque at the final stage (p < 0.05). Implants with the RBM surface had the highest vertical load for insertion (p < 0.05). Testing for surface roughness revealed that the implants with the RBM and hybrid surfaces had higher Ra values than the others (p < 0.05). Scanning electron microscopy showed that the implants with the RBM surface had the roughest surface. CONCLUSIONS: Surface-treated, self-drilling orthodontic mini-implants may be clinically acceptable, if controlled appropriately.
