ANTERIOR AND CANINE RETRACTION: THE GJESSING UNIVERSAL RETRACTION SPRING* Part two
نویسنده
چکیده
منابع مشابه
The retraction of upper incisors with the PG retraction system.
The aim of this study was to evaluate the effect on the dentoalveolar structures of the application of PG springs for retraction of upper incisors and to compare the outcome with the effect of a closed coil spring retraction system. Thirty-six subjects with Angle Class I or Class II malocclusions were selected for the study. Each subject had the two upper first premolars extracted and presented...
متن کاملAuxiliary springs in continuous arch treatment: Part 2. Appliance use and case reports.
In the second part of this series, three clinical examples are presented to illustrate the use of auxiliary space-closure springs with clinically manageable moment-to-force ratios and new canine brackets to accommodate these springs within the framework of conventional and straight-wire 0.018-inch appliance systems. Eligiloy retraction spring models (0.1650 inch x 0.02150 inch) in the edgewise ...
متن کاملEvaluation of canine retraction through distraction of the periodontal ligament: a clinical study.
AIM The aim of this study is to evaluate the efficiency of canine distraction and also to evaluate the position of canine in the arch after distraction. MATERIALS AND METHODS The study sample consisted of five patients, (4 males and 1 female), in the age group of 14 to 25 years who needed canine retraction (ten maxillary canines including both left and right) and first premolar extraction as ...
متن کاملControl of anterior segment using an antero-posterior lingual sliding retraction system: a preliminary cone-beam CT study
BACKGROUND This study was performed to evaluate the treatment effects of the antero-posterior lingual retractor (APLR), focusing on the 3-dimensional (3D) tooth movement of the maxillary anterior teeth and their alveolar bone levels. METHODS En masse retraction was performed using either the C-lingual retractor (CLR, C-group, n = 9) or the antero-posterior lingual retractor (APLR, AP-group, n...
متن کاملOptimal loading conditions for controlled movement of anterior teeth in sliding mechanics.
OBJECTIVE To determine optimal loading conditions such as height of retraction force on the power arm and its position on the archwire in sliding mechanics. MATERIALS AND METHODS A 3D finite element method (FEM) was used to simulate en masse anterior teeth retraction in sliding mechanics. The degree of labiolingual tipping of the maxillary central incisor was calculated when the retraction fo...
متن کامل