The purpose of this study is to compare the stress of the bone around the mini-implant under the two kinds of force: the composite force which contains torque and traditional single force. There were 96 finite element models formed by the combination of mini-implant and bone, with diameters of 1.2 mm, 1.6 mm, 2.0 mm and corresponding length being 6 mm, 8 mm, 10 mm, 12 mm, respectively. Each siz...

BACKGROUND Optimal positioning of orthodontic mini-implants is essential for a successful treatment with skeletal anchorage. This study aims to compare the accuracy of two-dimensional radiographs with a cone beam computed tomography (CBCT) for mini-implant placement. METHODS An ideal site for mini-implant placement at the buccal interradicular space between the second premolar and the first m...

PURPOSE The objective of this study was to compare the outcomes of surgical mini-implant placement when potential mini-implant sites were scanned using a lower-dose 180° acquisition protocol versus a conventional 360° acquisition protocol. MATERIALS AND METHODS Ten dentate human skulls were used to provide sites for potential mini-implant placement. The sites were randomly divided into 2 grou...

BACKGROUND The purpose of this study was to evaluate the stress patterns produced in mini-implant and alveolar bone, for various implant dimensions, under different directions of simulated orthodontic force, using a three-dimensional finite element method. METHODS Eight finite element (FE) models of mini-implant and bone were generated with insertion angles of 30° and 60°, diameters of 1 and ...

OBJECTIVES To evaluate the accuracy of using routine 2-dimensional (2D) radiographs (panoramic and periapical) when evaluating the position of orthodontic temporary anchorage devices (mini-implants) in the maxilla, and to compare the results to 3-dimensional cone-beam computed tomography (CBCT). METHODS This cross-sectional study was conducted at King Abdulaziz University, Faculty of Dentistr...

ObjectivesThis FEM study was conducted in order to investigate the effect of thread design of an orthodontic mini-implant on primary stability and strain pattern and magnitude in the surrounding bone structure during orthodontic loading. Materials and MethodsThe mini-implants by six different manufacturers such as Aarhus Mini-Implant (American Orthodontics), AbsoAnchor (Dentos), Dual-Top (Jeil ...

BACKGROUND Maxillary protraction with the novel N2 mini-implant- and micro-implant-assisted rapid palatal expander (MARPE) can potentially provide significant skeletal effects without surgery, even in older patients where conventional facemask therapy has limited skeletal effects. However, the skeletal effects of altering the location and direction of force from mini-implant-assisted maxillary ...

UNLABELLED The aim of this study was to assess complete edentulous patient satisfactionwith two treatment alternatives--conventional dentures and mini implant anchored overdentures. MATERIALS AND METHODS Study sample comprised 36 patients--18 treated with newly made conventional prosthesis and 18 with mini implants anchored overdentures, with a ball attachment system (from IMTEC Corporation)....