INTRODUCTION The objective of this study was to determine the Hounsfield unit (HU) changes in the alveolar bone and root surfaces during controlled canine retractions. METHODS Eighteen maxillary canine retraction patients were selected for this split-mouth design clinical trial. The canines in each patient were randomly assigned to receive either translation or controlled tipping treatment. P...

OBJECTIVE To measure space closure during the retraction of upper permanent canines with self-ligating and conventional brackets. MATERIALS AND METHODS Fifteen patients who required maxillary canine retraction into first premolar extraction sites as part of their orthodontic treatment completed this study. In a random split-mouth design, the retraction of upper canines was performed using an ...

background: exposure of the gingival sulcus while controlling hemorrhage is prerequisites for maximizing treatment outcomes of cervical carious lesions and for obtaining quality impressions for the fabrication of indirect restorations with cervical fi nish lines. gingival retraction cords saturated with different chemical agents are widely used for this purpose. the aim of this study was to inv...

The study reported here was undertaken in an attempt to contribute, from a theoretical standpoint, to the knowledge and understanding of optimum force theory, particularly as it may be relevant to canine retraction. The following statements are derived from my analysis of the applicable published literature and the results of the present investigation: 1. This study lends support to the beliefs...

OBJECTIVE To evaluate the effects of laceback ligatures on canine distalization during the leveling and aligning stage and to compare the effectiveness of laceback ligatures with that of superelastic NiTi closed coil springs. MATERIALS AND METHODS Fifteen subjects were included in this study. Fixed orthodontic treatment was planned with the extraction of first premolars to solve crowding in u...

Introduction: Gingival crevicular fluid (GCF) has been widely investigated as a potential source of biomarkers for an individual’s oral and general health information. Various molecules presented in GCF were reported as potential biomarkers for orthodontic tooth movement (OTM). MicroRNAs (miRNAs) are small non-coding RNAs that are involved in post-transcriptional gene regulation. Recently, secr...

Segmental mechanics consists of multiple wire cross-sections in different segments of the arch. The advantages of segmental mechanics in comparison with continuous mechanics are a statically determinate force system, relatively constant force, minimal side-effects on the anchorage unit, minimal arch wire fabrication, decreased treatment duration and enhanced esthetics. Individual retraction of ...

Objective of the present study was to assess the scientific evidence on the efficacy of various methods of canine retraction. A literature survey was performed by applying the Medline Database (Entrez PubMed). Medical Subject Heading (MeSH) was used. References from the selected articles were also hand searched. The search strategy resulted in 129 articles. After applying the inclusion/exclusio...

The purpose of this study was to develop a new finite element method for simulating long-term tooth movements and to compare the movement process occurring in canine retraction using a T-loop spring having large bends and with that having small bends. Orthodontic tooth movement was assumed to occur in the same manner as the initial tooth movement, which was controlled by the moment-to-force (M/...