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Arch wires

Ming-Feng Wang, Shuang Li, Lin Liu
PURPOSE: To investigate the changes of condyle position by decreasing posterior occlusal plane angle in Class II high angle cases. METHODS: Fifteen Class II high angle patients, aged from 15 to 30, were treated. Before treatment, ANB>5°, FH-MP>32°, molar relationship was Class II bilaterally. The treatment began with aligning and leveling the upper and lower dental arch, then the upper arch was expanded when necessary. Multiloop edgewise arch wire (MEAW) was used to guide the mandible forward and flatten the posterior occlusal plane...
August 2018: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
Chiho Kato, Takashi Ono
Skeletal Class II high-angle open bite is often accompanied by osteoarthrosis of the temporomandibular joint (TMJ-OA). This type of malocclusion is challenging to correct, and it has been reported that patients with TMJ-OA treated with orthognathic surgery often experience skeletal relapse and a poor prognosis. This case report describes the treatment of a 25-year-old woman with retrognathia and TMJ-OA, whose masseter and temporal muscle activities were weak. Temporary anchorage devices were placed in the maxilla and the mandible, and the first molars were intruded...
December 2018: American Journal of Orthodontics and Dentofacial Orthopedics
Hozan Mufty, Steffen Rex, Inge Fourneau, Geert Maleux
Endovascular treatment of both type A and type B aortic dissection complicated by organ malperfusion is gaining increasing interest and evidence. Different fenestration techniques of the dissection membrane have already been described. We present a 53-year-old patient with complicated type A aortic dissection after previous repair of the ascending aorta. The patient was treated with dissection membrane fenestration and 'chees-wire' technique. Due to the mobility of the dissection flap, we encountered problems to perforate the dissection membrane with the use of a needle...
November 23, 2018: Annals of Vascular Surgery
Y B Kim, M Bayome, J H Park, H J Lim, S S Mo, N K Lee, Y A Kook
OBJECTIVE: The aim of this study was to evaluate the biomechanical effects of temporary skeletal anchorage devices (TSADs) on the mandibular dentition and mandible during total arch distalization according to locations and types of the TSADs using finite element (FE) analysis. SETTING AND SAMPLE POPULATION: A model of the mandible and teeth were used to build an FE analysis model. MATERIALS AND METHODS: Four FE models were constructed: Ramal plate (Type A) Sugawara plate (Type B), buccal shelf miniscrew (Type C), and interradicular miniscrew (Type D)...
November 22, 2018: Orthodontics & Craniofacial Research
Takashi Murakami, Akimasa Morisaki, Shinsuke Nishimura, Yosuke Takahashi, Yoshito Sakon, Mariko Nakano, Etsuji Sohgawa, Hiromichi Fujii, Toshihiko Shibata
OBJECTIVES: The through-and-through guidewire technique has been utilized for safe advancement of a high-profile stent graft delivery system through the tortuous aorta. A brachial-to-femoral configuration is most commonly established, but a few alternatives have been described. This study aimed to report our experience with the externalized transapical guidewire (ETAG) technique in patients who underwent thoracic endovascular aortic repair (TEVAR) and to explore its utility, feasibility and safety...
October 22, 2018: European Journal of Cardio-thoracic Surgery
Suleyman Kutalmış Buyuk, Mehmet Sami Guler, Muhammed Latif Bekci
AIM: The purpose of this study is to compare the effects of different wire size reverse closing loop and retraction forces in canine tooth distalization using the finite element analysis method. MATERIALS AND METHODS: Maxillary alveolar bone, maxillary first molar, second premolar and canine teeth were constructed in three dimensions along with their periodontal ligaments and standard edgewise brackets of 0.022 inch and stainless-steel reverse closing loop of 0...
October 10, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
Ashish Shrikant Satpute, Syed Ahmed Mohiuddin, Amol Madhukar Doiphode, Sujay Sanjay Kulkarni, Ahtesham Ahmad Qureshi, Swapnil Bharat Jadhav
PURPOSE: Intermaxillary fixation (IMF) is a fundamental principle in the management of mandibular fractures but with recent advent of open reduction and internal fixation (ORIF), use of IMF is almost limited intraoperatively. Therefore, we compared the efficacy of Erich arch bar versus embrasure wires for intraoperative IMF in mandibular fractures. METHOD: This prospective study was comprised of 50 patients with mandibular fractures who required ORIF with intraoperative IMF...
December 2018: Oral and Maxillofacial Surgery
Sachin Ahuja, Seema Gupta, Eenal Bhambri, Varun Ahuja, Baljinder Singh Jaura
OBJECTIVE: To study the biomechanical effects of the three-piece intrusion arch and Kalra simultaneous intrusion and retraction arch (K-SIR) on simultaneous intrusion and retraction of maxillary anterior teeth. DESIGN: Three-dimensional analysis of stresses and displacement of the anterior and posterior teeth with the three-piece intrusion arch and K-SIR arch was done using the finite element method (FEM). SETTING: Department of Orthodontics, Surendera Dental College and Research Institute, India...
October 3, 2018: Journal of Orthodontics
Azita Tehranchi, Hossein Behnia, Fereydoun Pourdanesh, Parsa Behnia, Nelson Pinto, Farnaz Younessian
Objective: The aim of this study was to evaluate the effect of LPRF, placed in extraction sockets, on orthodontic tooth movement (OTM). Materials and Methods: Thirty extraction sockets from eight patients (five males, three females, with a mean age of 17.37 years; range 12-25 years) requiring extraction of first premolars based on their orthodontic treatment plan participated in this split-mouth clinical trial. In one randomly selected quadrant of each jaw, the extraction socket was preserved as the experimental group by immediate placement of LPRF in the extraction socket...
July 2018: European Journal of Dentistry
Liang Xu, Xiao-Hong Huang, Shan Lin
PURPOSE: To compare the three-dimensional effect between traditional brackets and Damon self- ligating brackets on the arch during non-extraction treatment. METHODS: Forty-five patients with non-extraction treatment were included in this study. The patients were randomly divided into 3 groups. Patients in group A were treated with traditional brackets and Nickel titanium wire. Patients in group B were treated with Damon 3mx brackets and Cu-NiTi wire. Patients in group C were treated with traditional brackets and Cu-NiTi wire...
April 2018: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
Ya Zhang, Yi Zhang, Qin Jiang, Hua-Qiao Wang, Liang-Xing Qiu, Chao Wang
PURPOSE: To evaluate the biomechanical effect of arch wire deformation, height of micro-implant and lever-arm on movement of the maxillary anterior teeth in the lingual retraction force system. METHODS: Nonlinear 3-D finite element model of lingual orthodontic force system with micro-implant was constructed. When the arch-wire was set to be flexible body and rigid body, lingual retraction force system using sliding mechanism, the height of micro-implant and lever-arm was 0, 3, 5, 7 mm to alveolar ridge crest of the middle point of maxillary second premolars and maxillary first molars...
April 2018: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
Pawel Rynio, Arkadiusz Kazimierczak, Tomasz Jedrzejczak, Piotr Gutowski
Thoracic endovascular aortic repair (TEVAR) is an established treatment option, although some anatomical challenges require a through-and-through wire technique, and subsequently transapical access via minithoracotomy can be required. It is clear that an objective tool to facilitate decision-making is needed. A 3D print of a severely angulated aortic arch was used as a template to advance a stent graft, and this was achieved after pulling the top of the wire. This simulation assisted in decision-making relating to transapical access with a wire externalization...
August 13, 2018: Annals of Vascular Surgery
Yan Wang, Chang Liu, Fan Jian, Grant T McIntyre, Declan T Millett, Joy Hickman, Wenli Lai
BACKGROUND: Initial arch wires are the first arch wires to be inserted into the fixed appliance at the beginning of orthodontic treatment and are used mainly for the alignment of teeth by correcting crowding and rotations. With a number of different types of orthodontic arch wires available for initial tooth alignment, it is important to understand which wire is most efficient, as well as which wires cause least amount of root resorption and pain during the initial aligning stage of treatment...
July 31, 2018: Cochrane Database of Systematic Reviews
Amir Hossein Abdi, Saeed Reza Motamedian, Ehsan Balaghi, Mahtab Nouri
Objective: The aim of this study is to compare the adaptation of a straight wire between brackets positioned at the mid-lingual surface and those placed gingivally by using a three-dimensional simulation software. Methods: This cross-sectional study was performed using OrthoAid, an in-house software. The subjects were 36 adolescents with normal Class I occlusion. For each dental cast, two bracket positioning approaches, namely the middle and gingival, were examined...
July 2018: Korean Journal of Orthodontics
Chang Liu, Yan Wang, Wei-Lin Pan, Chang-Hao Yu, Jing-Yuan Huang, Cheng-Ge Hua
OBJECTIVE: This review aims to assess the relationship between initial archwire materials and pain at the initial stage of orthodontic treatment. METHODS: On October 1, 2017, seven databases were searched electronically for studies oninitial archwire materials and pain at the initial stage of orthodontic treatment. Quality assessment was performed with bias risk assessment tools suggested by Cochrane's handbook. Data extraction of included studies was also carried out...
June 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
Emad A Albdour, Eman Shaheen, Myrthel Vranckx, Francesco Guido Mangano, Constantinus Politis, Reinhilde Jacobs
BACKGROUND: Intraoral scanners are devices for capturing digital impressions in dentistry. Until now, several in vitro studies have assessed the trueness of digital impressions, but in vivo studies are missing. Therefore, the purpose of this study was to introduce a new method to assess trueness of intraoral scanners and digital impressions in an in vivo clinical set-up. METHODS: A digital impression using an intraoral scanner (Trios® 3 Cart wired, 3Shape, Copenhagen, Denmark) and a conventional alginate impression (Cavex Impressional®, Cavex, Haarlem, the Netherlands) as clinical reference were made for two patients assigned for full mouth extraction...
July 3, 2018: BMC Oral Health
Sumaiya Nezam, Arvind Kumar, Jeevendra Nath Shukla, Shabab Ahmed Khan
A pediatric mandibular fracture can cause a child severe pain and the parent or caregiver extreme worry. While the pattern of fractures in children is similar to adults, however, due to a number of factors, including the anatomical complexity of the developing mandible, management of such fractures differs from that of adults and can greatly challenge the pediatric dentist. Various treatment modalities of managing mandibular fracture are available, such as closed/open cap splint with circummandibular wiring, arch-bar fixation, and cementation of the cap splint...
January 2018: National Journal of Maxillofacial Surgery
Parmod Kumar, Govind Menon, Vidya Rattan
Introduction: Various methods have been described for intermaxillary fixation (IMF) for treatment of faciomaxillary injuries. Many studies have been described to evaluate the efficacy of different methods. Hanger plate method has not been commonly used. The aim of the present study was to compare the advantages and disadvantages of this method over Erich arch bar in mandibular fracture. Materials and Methods: Sixty patients of only mandibular fracture presenting to trauma center requiring open reduction and internal fixation under general anesthesia were randomly allocated to Group A and Group B comprising thirty patients in each...
January 2018: National Journal of Maxillofacial Surgery
X Wang, J J Zhang, F S Yuan, Y Wang, C H Li, J E Varrela, J Yue, L H Ge
OBJECTIVE: To investigate the clinical effect of eruption guidance appliance in the treatment of anterior cross bite in mixed-dentition children. METHODS: In the study,10 mixed-dentition children with anterior cross bite, totally 12 incisors, were selected. Alginate was used to take upper and lower dentition impression and make a hard plaster model,which served as the eruption guidance appliance for treatment. The pre- and post-operative dental casts were digitized with SmartOptics Activity 880 scanner,and the three-dimensional overlapping models were obtained by reverse engineering software,Geomagic Studio 2012,then the three-dimensional movements of the upper and lower incisors were analyzed using Imageware 13...
June 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Firas Chakroun, Vera Colombo, Dave Lie Sam Foek, Luigi Maria Gallo, Albert Feilzer, Mutlu Özcan
PURPOSE: The objective of this study was to evaluate the anterior tooth movement without and with bonded fixed orthodontic retainers under incremental loading conditions. MATERIALS AND METHODS: Six extracted mandibular anterior human teeth were embedded in acrylic resin in True Form I Arch type and 3D reconstruction of Digital Volume Tomography (DVT) images (0.4 mm3 voxels) were obtained. The anatomy of each tooth was segmented and digitally reconstructed using 3D visualization software for medical images (AMIRA, FEI SVG)...
September 2018: Journal of the Mechanical Behavior of Biomedical Materials
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