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International Orthodontics

Amaia Goena
Date of birth: 17/11/1998; gender: female. A. PRE-TREATMENT DOCUMENTS: 11 years old; 02/2010. DIAGNOSIS: Angle's class: class II division 2. Missing teeth before treatment: none. TREATMENT PLANNING: Without extractions. Alignment, levelling and arch coordination with intermaxillary class II alastics. Intercuspidation, finishing. Damon's bimaxillary multi-bracket. Beginning of treatment: 12 years old; 10/2010. B. POST-TREATMENT DOCUMENTS: 14 years old; 11/2012...
February 15, 2019: International Orthodontics
Milad Shamohammadi, Elham Hormozi, Mehrnaz Moradinezhad, Mina Moradi, Masoumeh Skini, Vahid Rakhshan
BACKGROUND AND AIM: Surface topography is a crucial factor in bracket sliding mechanics. Literature on surface roughness of aesthetic archwires is scarce, and there is no study on surface topography of such archwires affected by any sterilization methods. The aim of this study was to compare the surface topography of plain nickel-titanium (NiTi) versus as-received aesthetic coated NiTi wires versus aesthetic wires sterilized by autoclaving or glutaraldehyde immersion. MATERIALS AND METHODS: This in vitro study was performed on 80 atomic force microscopy (AFM) observations, 160 profilometry observations, and 40 scanning electron microscopy (SEM) images from rectangular wires of the brands 'American Orthodontics, Ortho Organizers, SIA, and Gestenco'...
February 15, 2019: International Orthodontics
Mauro Cozzani, Arash Azizi, Sara Eslami, Alireza Darnahal, Amirparham Pirhadirad, Abdolreza Jamilian
The purpose of this study was to compare the effect of a 4-bracket system including Alexander, Roth, MBT (Maxillary Transverse Bioadaptation), and Gianelly on the upper anterior tooth movement in sliding mechanics with the help of a 3-Dimensional (3D) Finite Element Method. METHODS: Displacement, stress, strain, centre of rotation and resistance on the incise edge and apex of the maxillary central incisor were calculated when 100, 200, 300, 400grams of retraction force were applied. RESULTS: The amount of incise edge displacement was 2...
February 14, 2019: International Orthodontics
Sandra Konopnicki, Romain Nicot, Matthias Schlund, Joel Ferri
PURPOSE: Class II dento-facial deformity due to inferior alveolar retrusion may be difficult to treat using conventional surgical procedures. The aim of this study was to report on total mandibular subapical osteotomy (TMSO) to correct inferior alveolar retrusion, to describe its indications, the surgical technique and to analyse the aesthetic, occlusal changes and stability. MATERIALS AND METHODS: Patients treated with TMSO from January 2004 to December 2014 were included and analysed retrospectively...
February 14, 2019: International Orthodontics
Youssouf Ouédraogo, Hicham Benyahia, Joseph Samba Diouf, Tiécoura Camara, Raoul Bationo, Papa Ibrahima Ngom
INTRODUCTION: After a clinical examination, in order to implement an appropriate treatment planning, additional examinations such as lateral cephalograms, were performed. They were submitted to a cephalometric analysis such as the Tweed-Merrifield analysis. These cephalometric analyses based on a synthesis of aesthetic criteria established for a Caucasian European-American white people population could not serve as the reference for an African population. The aim of our study was to help establish the cephalometric norms of the Tweed-Merrifield's craniofacial and aesthetic analysis for a consulting population in the city of Ouagadougou...
February 13, 2019: International Orthodontics
Amirfarhang Miresmaeili, Abbas Shokri, Fatemeh Salemi, Fatemeh Dehghani, Vahid Shahidi-Zandi, Ramin Rad, Maryam Shahdoost
OBJECTIVES: The aim of this study was to investigate the possible relationship between the morphology of maxilla and the palatally displaced canines (PDC). MATERIALS AND METHODS: In this cross-sectional study, there were 101 patients (45 males, 56 females) aged 12 to 16years, referred to Hamadan school of dentistry in 2014. They were divided into 3 groups: the bilateral PDC (PDCb) group (male=15, female=21), the unilateral PDC (PDCu) group (male=16, female=19), and the control group (male=14, female=16)...
February 13, 2019: International Orthodontics
Renato Nieto-Aguilar, Deyanira Serrato-Ochoa, Rafael Medina-Navarro, Asdrúbal Aguilera-Méndez, Karina Denisse Morales-Soto, Juan Pablo Loyola-Rodriguez, Antonio Campos, Miguel Alaminos
OBJECTIVE: To assess the retention efficiency of three types of temporary zinc oxide cement trademarks on forced eruption using intracranal wire device. METHODS: An in vitro evaluation included intracanal wire device displacement and detachment at 50g load force for 120 days and then the retention resistance at maximum load force. RESULTS: All groups of temporary zinc oxide cements were efficient to support 50g load forces after 120 days. None statistical differences were found between groups...
February 13, 2019: International Orthodontics
Maria Dolores Olaizola Andonegui
Date of birth: 4/02/97; gender: female. PRE-TREATMENT DOCUMENTS: 13.7 years old; 09/2010. DIAGNOSIS: Angle's class: class II subdivision. Missing teeth before treatment: none. TREATMENT PLANNING: Extractions of four first premolars 14, 24, 34, 44. Class II molar and discrepancy correction. Intercuspidation, finishing. Bimaxillary multi-bracket. Beginning of treatment: 12 years old; 10/2010. POST-TREATMENT DOCUMENTS: 15...
February 13, 2019: International Orthodontics
Vahid Mollabashi, Mohammad Karim Soltani, Naeime Moslemian, Marzieh Akhlaghian, Mahdi Akbarzadeh, Hesamoddin Samavat, Masoud Abolvardi
OBJECTIVES: Bolton ratio is used as a method for diagnosis of tooth size discrepancy. Tooth size discrepancy has an important role in the stability of results of final orthodontic treatment. The aim of this study was to determine and compare Bolton ratio in normal occlusion and different malocclusion groups of Iranian population. MATERIALS AND METHODS: This descriptive-analytic study comprises 240 orthodontic patient casts (for every malocclusion group: class I, class II division 1, class II division 2, class III, 30 males and 30 females) which have fully erupted and complete permanent dentitions from first molar to first molar, and also 60 persons (30 male-30 female) with normal occlusion...
February 13, 2019: International Orthodontics
Kacey Tung, Manuel O Lagravère
The purpose of this study was to determine if there were any common skeletal and dental structural characteristics obtained from CBCTs of patients with different growth patterns (Vertical or Non-Vertical). Sixty-three patients were previously categorized as vertical or not vertical grower using clinical examination and 2D cephalometric created images. Twenty-three landmarks were selected to examine CBCT images and used to calculate linear and angle measurements using geometric and trigonometric equations. Statistical analysis was done using SPSS statistical package and ICC values showed excellent reliability...
February 12, 2019: International Orthodontics
Hooman Zarif Najafi, Rafaat Bagheri, Hamid Reza Pakshir, Mohammad Amin Tavakkoli, Sepideh Torkan
INTRODUCTION: The aim of this study was to determine the effect of bleaching and desensitizing on shear bond strength (SBS) of metal brackets to enamel. METHODS: One hundred extracted human premolar were randomly assigned to 5 groups of 20. In the first group (control), no bleaching or desensitizing agent was used. Groups 2 to 5 were bleached with 37.5% hydrogen peroxide and desensitized with 6.0% potassium nitrate. Surface treatment comprised of etching for 15seconds in groups 1, 2 and 3, Er:yag laser irradiation and etching in group 4 and sandblasting and etching in group 5...
February 12, 2019: International Orthodontics
Muhammad Azeem, Muhammad Mudassar Saleem, Ahmad Liaquat, Arfan Ul Haq, Waheed Ul Hamid, Mina Masood
OBJECTIVE: Anchorage reinforcement is an important issue in orthodontic treatment. There is a lack of evidence regarding the failure rate of mini-implants inserted in the retromolar (RM) area, therefore the purpose of this present study was to evaluate the failure rates of mini-implants inserted in the RM area and to evaluate the factors affecting their stability. MATERIAL AND METHODS: This retrospective cohort study of 102 patients (52 female, 55 male; mean age: 18...
February 12, 2019: International Orthodontics
Aylin Pasaoglu Bozkurt
OBJECTIVE: The aim of this FEM study was to assess the effect of mechanical vibration force on miniscrews and stress distribution in cortical and trabecular bone around miniscrews. METHODS: A 3D model was created using a CBCT image of a patient. Three different analyses were performed on a single model. Material properties, boundary conditions and the quality of applied forces (direction and magnitude) were defined. 150 gf, 150 gf and 30Hz (0.2N), 150 gf and 111Hz (0...
February 12, 2019: International Orthodontics
Cynthia Bauer, Marie-José Boileau, Cédric Bazert
OBJECTIVE: This systematic review aims to define the recommendations allowing an optimized clinical implementation for orthodontic extraction as a pre-implant soft tissue management procedure. MATERIALS AND METHODS: A digital search was performed in the Cochrane Library, PubMed, Scopus, and DOSS databases; a pre-screening was conducted according to the title and summary of the articles. After a complete reading, only the articles meeting all of our inclusion criteria were selected, and a second search, this time manual, was performed within their references...
February 12, 2019: International Orthodontics
Sita Patel, Daniel Rinchuse, Thomas Zullo, Rekha Wadhwa
OBJECTIVE: This systematic review aimed to clarify whether there are any significant long-term sequelae to wearing mandibular advancement devices focusing on dental and skeletal effects in adults with OSA. MATERIALS AND METHODS: Databases, including PubMed, Medline, Embase, Web of Science, Cochrane Central Register of Controlled Trials, and SAGE Journals. Hand searches and grey literature were also used. A piloted data collection form was used to extract the appropriate data...
February 12, 2019: International Orthodontics
Hooman Zarif Najafi, Mohammad Mousavi, Nadia Nouri, Sepideh Torkan
INTRODUCTION: There are controversies regarding the most reliable conditioning method of the aged composite surface to ensure optimum bond strength. The purpose of this study was to evaluate the shear bond strength of metal brackets to microhybrid composite restorations after different surface preparation techniques. MATERIALS AND METHODS: A total of sixty microhybrid composite samples were prepared using upper right central incisor celluloid crown as a mold. Samples were treated with 4 different surface conditioning methods: (1) etching, (2) sandblasting, (3) grinding, and (4) CO2 laser irradiation...
February 11, 2019: International Orthodontics
Laure Frapier
No abstract text is available yet for this article.
February 11, 2019: International Orthodontics
Amir Farhang Miresmæili, Vahid Mollabashi, Leila Gholami, Maryam Farhadian, Loghman Rezaei-Soufi, Bahareh Javanshir, Milad Malekshoar
INTRODUCTION: The aim of the present study was to compare the tendency of mandibular incisor rotation relapse after conventional circumferential supracrestal fiberotomy (CSF) with Er,Cr:YSGG laser-aided CSF. METHODS: In this three-arm parallel study, the patients with one lower incisor rotation greater than 30 degrees before treatment were selected. The patients were randomly assigned to three groups in a 1:1:1 ratio. Rotational relapse tendency was measured on a digitized model one month after arch wire removal...
February 11, 2019: International Orthodontics
Janeth Prado, Helen Pardo, Manuel Bravo
Rapid maxillary expansion (RME) is an orthopaedic treatment frequently used to correct transversal problems in the maxilla. The aim of this case report was to evaluate the transversal skeletal and dental changes in a 12-year-old male patient with maxillary atresia and bilateral posterior crossbite who had been treated with rapid maxillary expansion assisted by mini-implant anchorage. The results showed an increase of 6.2mm in the maxillary width, an increase of 6mm, 8mm and 9mm in the fossa-fossa measurements between first premolars, second premolars and first molars respectively, also there was a vestibuloversion of molars as an undesirable effect...
February 7, 2019: International Orthodontics
Laure Frapier
No abstract text is available yet for this article.
February 6, 2019: International Orthodontics
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