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Progress in Orthodontics

Emerson Tavares de Sousa, Beatriz Feitosa da Silva, Fabiana Barros Marinho Maia, Franklin Delano Soares Forte, Fábio Correia Sampaio
BACKGROUND: The normative orthodontic treatment need, established by dental professionals during the dental appointment, becomes ineffective when it does not evaluate all the factors that influence the decision-making process, including individuals' perception and satisfaction with their dental appearance. Therefore, the purpose of this study was to investigate the perception of children and their mothers as regards orthodontic treatment need and satisfaction with dental aesthetics and test if these variables are associated with the objective orthodontic treatment needs, assessed by the Dental Aesthetic Index (DAI)...
December 2016: Progress in Orthodontics
Luca Lombardo, Enrico Sacchi, Maria Larosa, Francesco Mollica, Valentina Mazzanti, Giorgio Alfredo Spedicato, Giuseppe Siciliani
BACKGROUND: The aim of this study is to evaluate the mechanical properties of the screws used for rapid expansion of the upper jaw. METHODS: Ten types of expansion screw were assessed, seven with four arms: Lancer Philosophy 1, Dentaurum Hyrax Click Medium, Forestadent Anatomic Expander type "S", Forestadent Anatomic Expander type "S" for narrow palates, Forestadent Memory, Leone A 2620-10 with telescopic guide, and Leone A 0630-10 with orthogonal arms; and three with two arms: Dentaurum Variety S...
December 2016: Progress in Orthodontics
Veerasathpurush Allareddy, Nicholas Ching, Eric A Macklin, Lauren Voelz, Gil Weintraub, Emily Davidson, Lisa Albers Prock, Dennis Rosen, Richard Brunn, Brian G Skotko
OBJECTIVE: The objective of the present study is to examine the craniofacial development of patients with Down syndrome (DS) and compare them with a neurotypical population. METHODS: This study is a cross-sectional analysis of lateral cephalometric radiographs of participants with DS. The study population consisted of children and young adults with DS aged 3-25 years. Cephalometric data were summarized by age and sex. Raw and normalized z-scores were computed. One-sample t tests were used to test whether mean z-scores differed from zero...
December 2016: Progress in Orthodontics
Luis Ernesto Arriola-Guillén, Aron Aliaga-Del Castillo, Carlos Flores-Mir
BACKGROUND: The aim of this study was to determine the effect of the maxillary posterior dentoalveolar discrepancy (MPDD) on the angulation of maxillary molars in open bite subjects. METHODS: Pre-treatment lateral cephalograms of 90 young adults with skeletal open bite were examined. The sample initially included six groups categorized according to MPDD condition (present or absent) and sagittal skeletal facial growth patterns (classes I, II, or III). Then, the sample was separated into two groups according to MPDD (present = 50, absent = 40)...
December 2016: Progress in Orthodontics
Alaa M H Alfawal, Mohammad Y Hajeer, Mowaffak A Ajaj, Omar Hamadah, Bassel Brad
OBJECTIVE: The objective of this study was to assess systematically the available scientific evidence relating the efficiency of minimally invasive surgical procedures in accelerating orthodontic tooth movement and the adverse effects associated with these procedures. METHODS: Electronic search of these databases CENTRAL, EMBASE, Scopus, PubMed, Web of Science, Google Scholar Beta, Trip, OpenGrey and PQDT OPEN was performed (last updated January 2016). The reference lists of the included studies were hand searched...
December 2016: Progress in Orthodontics
Mais Medhat Sadek, Noha Ezat Sabet, Islam Tarek Hassan
BACKGROUND: The purpose of this study was to determine differences in cortical bone thickness among subjects with different vertical facial dimensions using cone beam computed tomography (CBCT). METHODS: From 114 pre-treatment CBCT scans, 48 scans were selected to be included in the study. CBCT-synthesized lateral cephalograms were used to categorize subjects into three groups based on their vertical skeletal pattern. Cortical bone thickness (CBT) at two vertical levels (4 and 7 mm) from the alveolar crest were measured in the entire tooth-bearing region in the maxilla and mandible...
December 2016: Progress in Orthodontics
Zohreh Hedayati, Mehrdad Shomali
BACKGROUND: Nowadays, mini screws are used in orthodontic tooth movement to obtain maximum or absolute anchorage. They have gained popularity among orthodontists for en masse retraction of anterior teeth after first premolar extraction in maximum anchorage cases. The purpose of this study was to determine the type of anterior tooth movement during the time when force was applied from different mini screw placements to the anterior power arm with various heights. METHODS: A finite element method was used for modeling maxillary teeth and bone structure...
December 2016: Progress in Orthodontics
Sharifah AlRushaid, Taranpreet Chandhoke, Achint Utreja, Aditya Tadinada, Veerasathpurush Allareddy, Flavio Uribe
BACKGROUND: The objective of this retrospective case-control study was to measure the maxillary lateral incisor root dimensions and quantify the labial and palatal bone in patients with unilateral maxillary lateral incisor agenesis (MLIA) after orthodontic treatment and compare them to non-agenesis controls using cone beam computed tomography. METHODS: The labiopalatal and mesiodistal root dimensions, mesiodistal coronal dimensions, and labiopalatal bone and alveolar ridge widths of the maxillary lateral incisor were assessed on posttreatment cone beam computed tomography scans of 15 patients (mean age 16...
December 2016: Progress in Orthodontics
Antonio Manni, Marco Pasini, Maria Rita Giuca, Riccardo Morganti, Mauro Cozzani
BACKGROUND: The aim of this study is to investigate the pharyngeal airway space changes in patients treated with rapid palatal expansion (RPE) and Herbst appliance with or without skeletal anchorage. METHODS: A 40-patient study group treated with the Herbst RME combination was included; moreover, a comparison between two subgroups based on whether miniscrews were used was evaluated. A subgroup 1 included 20 patients who were treated with RPE and an acrylic splint Herbst with miniscrews, and subgroup 2 included 20 patients who were treated with RPE and an acrylic splint Herbst...
December 2016: Progress in Orthodontics
Lucia Pisani, Laura Bonaccorso, Rosamaria Fastuca, Raffaele Spena, Luca Lombardo, Alberto Caprioglio
BACKGROUND: The treatment options for the early treatment of anterior open bite are still controversial. The aim of this study was to evaluate the actual available evidence on treatments of anterior open bite in the mixed dentition in order to assess the effectiveness of the early treatment in reducing open bite, the most efficacious treatment strategy and the stability of the results. MATERIALS AND METHODS: A literature survey was done on November 15, 2015, by means of appropriate Medical Subject Headings (MeSH) using the following databases: PubMed, EMBASE, Cochrane Library, LILACS, VHL, and WEB OF SCIENCE...
December 2016: Progress in Orthodontics
Luca Lombardo, Antonella Carlucci, Mario Palone, Francesco Mollica, Giuseppe Siciliani
BACKGROUND: The aim of this study is to investigate the relative stiffness of straight and mushroom lingual archwires of different diameters, cross sections and alloys, plotting their load/deflection graphs and using a modified three-point bending test. METHODS: Fujita's mushroom archwires and straight lingual archwires of different diameters, cross sections and alloys were derived by a virtual set-up of an equal malocclusion and were cut at their straight distal portion...
December 2016: Progress in Orthodontics
Igor Batista Camargo, João Batista Sobrinho, Emanuel Sávio de Souza Andrade, Joseph E Van Sickels
BACKGROUND: Lower third molar (M3) eruption is unpredictable. The purpose of this study was to correlate radiographic position of M3 on a preexistent film with the current clinical, histopathological, and radiographic findings. METHODS: A retrospective cohort study was performed. The sample was collected from a database of patients covered by Medical Fund of Brazilian Army. Radiographs were obtained a minimum of 5 years prior to the presurgical visit and after their clinical exam...
December 2016: Progress in Orthodontics
Sombir Singh, Satinder Pal Singh, Ashima Goyal, Ashok Kumar Utreja, Ashok Kumar Jena
BACKGROUND: One of the most undesirable side effects of comprehensive orthodontic treatment is white spot lesions (WSLs). Despite many attempts at prevention of WSLs, its prevalence remains very high on debonding. There are many agents like fluoride toothpastes, fluoride varnishes, and fluoride mouth rinses, and casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) is frequently used for the remineralization of WSLs. However, there is no consensus in the literature with respect to the success rates of these agents...
December 2016: Progress in Orthodontics
Dalya Al-Moghrabi, Nikolaos Pandis, Padhraig S Fleming
OBJECTIVE: In the view of the widespread acceptance of indefinite retention, it is important to determine the effects of fixed and removable orthodontic retainers on periodontal health, survival and failure rates of retainers, cost-effectiveness, and impact of orthodontic retainers on patient-reported outcomes. METHODS: A comprehensive literature search was undertaken based on a defined electronic and gray literature search strategy ( PROSPERO: CRD42015029169)...
December 2016: Progress in Orthodontics
K Subramani, S N Pandruvada, D A Puleo, J K Hartsfield, S S Huja
BACKGROUND: The effects of surface roughness and carboxyl functionalization of multi-walled carbon nanotubes (MWCNTs) mixed with collagen coated onto titanium (Ti) substrates on MC3T3-E1 osteoblasts were evaluated. METHODS: The proliferation, differentiation, and matrix mineralization were investigated using (1) smooth-surfaced Ti discs, (2) Ti discs coated with collagen and MWCNT (Ti-MWCNT), and (3) Ti discs coated with collagen and MWCNT-COOH (Ti-MWCNT-COOH) for applications in orthodontic mini screw implants (MSIs)...
December 2016: Progress in Orthodontics
Nga Hoang, Gerald Nelson, David Hatcher, Snehlata Oberoi
BACKGROUND: The boundaries for orthodontic tooth movement are set by the bony support of the dentition. This study compares the mandibular anterior alveolar housing in individuals with low, average, and high mandibular plane angles before orthodontic treatment and measures alveolar bone loss and root resorption after orthodontic treatment. METHODS: Pretreatment cone-beam computed tomography (CBCT) images of 75 non-growing individuals, 25 in three groups: low-angle (sella-nasion to mandibular plane ≤28°), average-angle (30°-37°), and high-angle (≥39°), were analyzed...
December 2016: Progress in Orthodontics
Aline do Carmo Bastos, Joelma Bezerra de Oliveira, Karina Flexa Ribeiro Mello, Patrícia Botelho Leão, Flavia Artese, David Normando
BACKGROUND: The aim of this study was to evaluate the ability of oral/maxillofacial surgeons (OMFSs) and orthodontists to predict third molar eruption by examining a simple panoramic radiograph in cases where full spontaneous eruption occurred. METHODS: Panoramic radiographs of 17 patients, 13-16 years of age, were obtained just after orthodontic treatment (T1), when the third molars were intraosseous. The radiographs at T1 were presented to 28 OMFSs and 28 orthodontists-who were asked to give a prognosis for the lower third molars on both sides (n = 34)...
December 2016: Progress in Orthodontics
Roberta Heiffig Handem, Guilherme Janson, Murilo Matias, Karina Maria Salvatore de Freitas, Darwin Vaz de Lima, Daniela Gamba Garib, Marcos Roberto de Freitas
BACKGROUND: The aim of this study was to compare the degree of external apical root resorption (EARR) in patients treated with self-ligating Damon appliances and with conventional preadjusted appliances. METHODS: The sample comprised 52 patients, divided into two groups. Group 1 consisted of 25 patients treated with self-ligating Damon appliances, with an initial age of 16.04 years, final age of 18.06 years, and treatment time of 2.02 years. Group 2 consisted of 27 patients, treated with conventional preadjusted appliances, with an initial age of 16...
December 2016: Progress in Orthodontics
Robert J Peterman, Shuying Jiang, Rene Johe, Padma M Mukherjee
BACKGROUND: Dolphin® visual treatment objective (VTO) prediction software is routinely utilized by orthodontists during the treatment planning of orthognathic cases to help predict post-surgical soft tissue changes. Although surgical soft tissue prediction is considered to be a vital tool, its accuracy is not well understood in tow-jaw surgical procedures. The objective of this study was to quantify the accuracy of Dolphin Imaging's VTO soft tissue prediction software on class III patients treated with maxillary advancement and mandibular setback and to validate the efficacy of the software in such complex cases...
December 2016: Progress in Orthodontics
Ivan Toshio Maruo, Hiroshi Maruo, Armando Yukio Saga, Dauro Douglas de Oliveira, Marco André Argenta, Orlando Motohiro Tanaka
BACKGROUND: This study aimed to simulate the actions of low-pull (LP), high-pull (HP), and combined pull (CP) headgears (HGs) and to analyze tooth movement tendencies through finite element analysis. METHODS: Tomographic slices of a human maxilla with complete permanent dentition were processed by reconstruction software, and the triangular surface mesh was converted into non-uniform rational B-spline (NURBS) curves. An HG facial bow was also modulated in 3D. The teeth and bone were considered to have isotropic and linear behavior, whereas the periodontal ligament was considered to have non-linear and hyperelastic behavior...
December 2016: Progress in Orthodontics
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