title: Mechanical and Histological Effects of Resorbable Blasting Media Surface Treatment on the Initial Stability of Orthodontic Mini-Implants.
abstract: Introduction. This study aimed to evaluate the effects of resorbable blasting media (RBM) treatment on early stability of orthodontic mini-implants by mechanical, histomorphometric, and histological analyses. Methods. Ninety-six (64 for mechanical study and 32 for histological study and histomorphometric analysis) titanium orthodontic mini-implants (OMIs) with machined (machined group) or RBM-treated (CaP) surface (RBM group) were implanted in the tibiae of 24 rabbits. Maximum initial torque (MIT) was measured during insertion, and maximum removal torque (MRT) and removal angular momentum (RAM) were measured at 2 and 4 weeks after implantation. Bone-to-implant contact (BIC) and bone area (BA) were analyzed at 4 weeks after implantation. Results. RBM group exhibited significantly lower MIT and significantly higher MRT and RAM at 2 weeks than machined group. No significant difference in MRT, RAM, and BIC between the two groups was noted at 4 weeks, although BA was significantly higher in RBM group than in machined group. RBM group showed little bone resorption, whereas machined group showed new bone formation after bone resorption. Conclusions. RBM surface treatment can provide early stability of OMIs around 2 weeks after insertion, whereas stability of machined surface OMIs may decrease in early stages because of bone resorption, although it can subsequently recover by new bone apposition.
authors.affiliation: Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Republic of Korea.
authors.forename: Odontuya
authors.identifier: 0000-0002-5304-9145
authors.initials: O
authors.lastname: Gansukh
authors.affiliation: Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Republic of Korea.
authors.forename: Jong-Wha
authors.identifier: 0000-0002-4080-2046
authors.initials: JW
authors.lastname: Jeong
authors.affiliation: Department of Orthodontics, Section of Dentistry, Seoul National University Bundang Hospital, Seongnam-si 13620, Republic of Korea.
authors.forename: Jong-Wan
authors.identifier: 0000-0002-2752-0116
authors.initials: JW
authors.lastname: Kim
authors.affiliation: Department of Oral and Maxillofacial Surgery and Oral Cancer Center, School of Dentistry and Dental Research Institute, Seoul National University Dental Hospital, Seoul 03080, Republic of Korea.
authors.forename: Jong-Ho
authors.identifier: 0000-0002-8843-545X
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Orthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul 03080, Republic of Korea.
authors.forename: Tae-Woo
authors.identifier: 0000-0003-2824-8270
authors.initials: TW
authors.lastname: Kim
mesh_terms: D000818:Animals; D003757:Dental Implantation; D015921:Dental Implants; D006801:Humans; D055595:Mechanical Phenomena; D008855:Microscopy, Electron, Scanning; D016348:Osseointegration / Q000187:drug effects; D011817:Rabbits; D013499:Surface Properties; D013718:Tensile Strength / Q000187:drug effects; D013977:Tibia / Q000000981:diagnostic imaging / Q000648:ultrastructure; D014025:Titanium / Q000737:chemistry / Q000627:therapeutic use*
chemical_list: D015921:Dental Implants; D014025:Titanium