title: Biomechanical characteristics of microimplant for anchorage in orthodontics: a 3D finite element model study.
abstract: In orthodontic treatment, anchorage control is essential for success. A recent development, stationary anchorage (micro- implants) eliminates one of the uncertainties of orthodontic tooth movement by offering absolute control over potentially undesirable counter movements. The objective of this study was to establish a 3D finite element model for microimplant and to analyze the influence of different angulations to the long axis of the teeth (30-90°) on the biomechanical characteristics of orthodontic anchorage implant-bone interface. Results of this study showed that largest stress and deformation was seen in the cortical bone and upper region of trabecular bone. Stress and deformation increased as the angulations of the implant to the long axis of the tooth increased. As the angulation of the implant to the long axis of maxillary 1st molar increased, stress and deformation also decreased. Maximum stress and displacement were recorded when implant was placed perpendicular to the long axis of maxillary 1st molar.
authors.affiliation: Principal, Professor and Head, Department of Orthodontics and Dentofacial Orthopedics, KLR's Lenora Institute of Dental Sciences Rajanagaram, Rajahmundry, Andhra Pradesh, India, Phone: 09848021412, e-mail: drdlnaidu@rediffmail.com.
authors.forename: D Lakshmayya
authors.initials: DL
authors.lastname: Naidu
authors.affiliation: Reader, Department of Orthodontics, Army College of Dental Sciences Secunderabad, Andhra Pradesh, India.
authors.forename: T
authors.initials: T
authors.lastname: Harini
authors.affiliation: Senior Lecturer, Department of Orthodontics, Army College of Dental Sciences, Secunderabad, Andhra Pradesh, India.
authors.forename: C M S Krishna
authors.initials: CM
authors.lastname: Prasad
authors.affiliation: Assistant Professor, Department of Orthodontics, Government Dental College and Hospital, Hyderabad, Andhra Pradesh, India.
authors.forename: H Vidyadhara
authors.initials: HV
authors.lastname: Lakshmi
authors.affiliation: Reader, Department of Orthodontics, Rajarajeswari Dental College Bengaluru, Karnataka, India.
authors.forename: N K
authors.initials: NK
authors.lastname: Lokesh
authors.affiliation: Senior Lecturer, Department of Orthodontics, Rajarajeswari Dental College, Bengaluru, Karnataka, India.
authors.forename: H S
authors.initials: HS
authors.lastname: Dharmesh
mesh_terms: D001696:Biomechanical Phenomena; D003198:Computer Simulation; D015921:Dental Implants; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008437:Maxilla / Q000503:physiopathology; D008904:Miniaturization; D008954:Models, Biological; D008963:Molar / Q000503:physiopathology; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation* / Q000379:methods; D016382:Orthodontic Appliance Design; D013314:Stress, Mechanical
chemical_list: D015921:Dental Implants