We proposed a new method for evaluating the deterioration of messenger wires by using terahertz waves. use time-domain spectroscopy to measure several twisted wire samples with different levels deterioration. find that each sample had distribution reflection intensity which was due wires' twist structure. show it is possible assess degradation from straight lines present in image. Furthermore, ...

Aim: To compare two types of treatment for Class II deep overbite malocclusion assessing maxillary and mandibular arches behavior in subjects submitted to full orthodontic treatment with standard edgewise appliance and those who used straight wire appliance. Methods: The sample consisted of 50 patients treated with full fixed appliances either with edgewise appliance (n=25, Group 1), or with st...

OBJECTIVE The main goal of this study was to optimize unilateral molar rotation correction by modifying a trans-palatal arch (TPA) design using the finite element method. DESIGN Three-dimensional analysis of different TPA designs was carried out using the finite element method. SETTING Department of Orthodontics, Tehran University of Medical Sciences, Iran. MATERIAL AND METHODS For this i...

OBJECTIVE To create an experimental structural scoliosis model in mice to evaluate the efficacy of shape-memory metals to gradually correct the deformity over time. MATERIAL AND METHOD Experimental scoliosis was generated in 3 week-old mice by means of a suture between the left scapula and pelvis for 8 weeks. They were then randomised into two groups: a control group, in which the suture was ...