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Progress in Orthodontics

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https://www.readbyqxmd.com/read/28714043/effects-of-surgically-assisted-rapid-maxillary-expansion-on-mandibular-position-a-three-dimensional-study
#1
Talles Fernando Medeiros Oliveira, Valfrido Antônio Pereira-Filho, Mario Francisco Real Gabrielli, Eduardo Sanches Gonçales, Ary Santos-Pinto
BACKGROUND: This study aimed to evaluate three-dimensional changes in mandibular position after surgically assisted rapid maxillary expansion (SARME). METHODS: A retrospective study was carried out with tomographic records of 30 adult patients with maxillary transverse deficiency who underwent SARME. Cone beam computed tomography scans were obtained preoperatively (T1), after expansion (T2) and 6 months after expansion (T3). Mandibular landmarks were measured with respect to axial, sagittal, and coronal planes...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28691142/force-level-of-small-diameter-nickel-titanium-orthodontic-wires-ligated-with-different-methods
#2
Rodrigo Hitoshi Higa, José Fernando Castanha Henriques, Guilherme Janson, Murilo Matias, Karina Maria Salvatore de Freitas, Fernanda Pinelli Henriques, Manoela Fávaro Francisconi
BACKGROUND: The aim of this study was to compare the deflection force in conventional and thermally activated nickel-titanium (NiTi) wires in passive (Damon Q) and active (Bioquick) self-ligating brackets (SLB) and in conventional brackets (CB) tied by two different methods: elastomeric ligature (EL) and metal ligature (ML). METHODS: Two wire diameters (0.014 and 0.016 in.) and 10 specimens per group were used. The specimens were assembled in a clinical simulation device and tested in an Instron Universal Testing Machine, with a load cell of 10 N...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28681357/a-cross-sectional-analysis-of-the-prevalence-of-tooth-agenesis-and-structural-dental-anomalies-in-association-with-cleft-type-in-non-syndromic-oral-cleft-patients
#3
Dimitrios Konstantonis, Alexandros Alexandropoulos, Nikoleta Konstantoni, Maria Nassika
BACKGROUND: The aim of this study was to investigate the prevalence of tooth agenesis, microdontia, and tooth malformation among non-syndromic oral cleft patients and their potential association with cleft type and gender. METHODS: Intraoral records and radiographs of 154 patients (97 males and 57 females) were examined. The variables assessed were tooth agenesis, microdontia, dental malformations, and cleft types. The statistics included chi-square and Fisher's exact tests as well as logistic regression to assess any mutual effects of gender and cleft type on the dental variables...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28670662/attitudes-of-orthodontists-and-laypersons-towards-tooth-extractions-and-additional-anchorage-devices
#4
Chidsanu Changsiripun, Petchpailin Phusantisampan
BACKGROUND: This study investigated the attitudes of orthodontists and laypersons towards the choice of extracting second premolars, rather than first premolars, based on tooth condition and the use of additional anchorage devices. METHODS: Questionnaires were sent to two groups: 324 orthodontists who were members of the Thai Association of Orthodontists, and 100 randomly selected Thai laypersons aged above 20 years and who were unrelated to the field of dentistry...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28670661/comparison-of-4-and-6%C3%A2-weeks-of-rest-period-for-repair-of-root-resorption
#5
Sneh A Mehta, Shailesh V Deshmukh, Ravindranath B Sable, Amol S Patil
BACKGROUND: The study was designed to evaluate and compare the rest periods of 4 and 6 weeks for healing of orthodontically induced root resorption craters. METHODS: The study was conducted with a split-mouth design, with the right and left mandibular first premolars of 14 subjects serving as the two groups of the study. The right premolars constituted group A and the left ones, group B. Intrusive force was applied on these teeth for a period of 6 weeks, followed by retaining the teeth for 4 weeks (group A) and 6 weeks (group B) as rest periods before extraction...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28603805/stress-and-displacement-patterns-in-the-craniofacial-skeleton-with-rapid-maxillary-expansion-a-finite-element-method-study
#6
J Priyadarshini, C M Mahesh, B S Chandrashekar, Abhishek Sundara, A V Arun, Vinay P Reddy
BACKGROUND: Rapid maxillary expansion (RME), indicated in the treatment of maxillary deficiency directs high forces to maxillary basal bone and to other adjacent skeletal bones. The aim of this study is to (i) evaluate stress distribution along craniofacial sutures and (ii) study the displacement of various craniofacial structures with rapid maxillary expansion therapy by using a Finite Element model. METHODS: An analytical model was developed from a dried human skull of a 12 year old male...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28580542/comparison-of-surgical-and-non-surgical-orthodontic-treatment-approaches-on-occlusal-and-cephalometric-outcomes-in-patients-with-class-ii-division-i-malocclusions
#7
Sheila Daniels, Patrick Brady, Arya Daniels, Stacey Howes, Kyungsup Shin, Satheesh Elangovan, Veerasathpurush Allareddy
BACKGROUND: This study aimed to examine end-of-treatment outcomes of severe Class II Division I malocclusion patients treated with surgical or non-surgical approaches. This study tests the hypotheses that occlusal outcomes (ABO-OGS) and cephalometric outcomes differ between these groups. METHODS: A total of 60 patients were included: 20 of which underwent surgical correction and 40 of which did not. Cast grading of initial and final study models was performed and information was gathered from pre- to post-treatment cephalometric radiographs...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28580541/decalcification-prevention-around-orthodontic-brackets-bonded-to-bleached-enamel-using-different-topical-agents
#8
Ferial Ahmed Msallam, Mohammed El-Awady Grawish, Ahmad Mohammed Hafez, Yasser Lotfy Abdelnaby
BACKGROUND: The present study was conducted to evaluate the effect of different topical agents utilized for prevention of enamel decalcification around orthodontic brackets bonded to bleached and non-bleached enamel. METHODS: Human maxillary premolars (n = 120) were divided into two equal groups. Teeth in group I were left without bleaching while those in group II were bleached with Vivastyle gel. Metal brackets were bonded to all the teeth using light-cured adhesive...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28540615/clinical-evaluation-of-marketed-orthodontic-products-are-researchers-behind-the-times-a-meta-epidemiological-study
#9
Jadbinder Seehra, Nikolaos Pandis, Padhraig S Fleming
BACKGROUND: The role of marketing and industry in the treatment decisions of orthodontists has received increasing attention in recent years with clinical research typically undertaken subsequent to established use of these devices and often failing to confirm the promise of manufacturers' claims. This meta-epidemiological study was undertaken to assess the proportion of clinical trials in orthodontics evaluating commercially marketed products and to evaluate the direction of the results of these studies...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28503725/posterior-teeth-angulation-in-non-extraction-and-extraction-treatment-of-anterior-open-bite-patients
#10
Guilherme Janson, Mayara Rizzo, Vinicius Laranjeira, Daniela Gamba Garib, Fabricio Pinelli Valarelli
BACKGOUND: This study cephalometrically evaluated the posterior teeth angulation changes of anterior open-bite non-extraction and extraction treatment in the permanent dentition, with anterior vertical elastics. METHODS: The sample consisted of initial and final lateral headfilms of 60 patients divided into 2 groups: Group 1 consisted of 30 patients treated with non-extraction with an initial mean age of 15.26 years and treated with fixed appliances for a mean period of 2...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28503724/root-resorption-during-orthodontic-treatment-with-invisalign%C3%A2-a-radiometric-study
#11
Giulia Gay, Serena Ravera, Tommaso Castroflorio, Francesco Garino, Gabriele Rossini, Simone Parrini, Giovanni Cugliari, Andrea Deregibus
BACKGROUND: Root resorption (RR) is described as a permanent loss of tooth structure from the root apex. Many reports in the literature indicate that orthodontically treated patients are more likely to have severe apical root shortening, interesting mostly maxillary, followed by mandibular incisors. The aim of the study was to investigate the incidence and severity of RR in adult patients treated with aligners. The study group consisted of 71 class I adult healthy patients (mean age 32...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28459119/serum-igf-1-igfbp-3-and-their-ratio-potential-biochemical-growth-maturity-indicators
#12
Nimisha Jain, Tulika Tripathi, S K Gupta, Priyank Rai, Anup Kanase, Shilpa Kalra
BACKGROUND: Determination of skeletal maturation and remaining growth potential is an essential part of treatment planning in orthodontics. The aim of our study was to determine the relationship between IGF-1 levels, IGFBP-3 levels with CVM staging to track the pre pubertal and pubertal growth spurts in female patients in North Indian population. METHODS: This cross-sectional study was conducted on ninety female subjects in the age group of 8-20 years. Blood samples were collected and centrifuged and serum samples were then analysed by Human IGF-1 and IGFBP-3 enzyme-linked immunosorbent assay kits, specific for IGF-1 and IGFBP-3, respectively...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28447324/craniofacial-morphology-and-dental-maturity-in-children-with-reduced-somatic-growth-of-different-aetiology-and-the-effect-of-growth-hormone-treatment
#13
REVIEW
Sotiria Davidopoulou, Athina Chatzigianni
Children with reduced somatic growth may present various endocrinal diseases, especially growth hormone deficiency (GHD), idiopathic short stature (ISS), chromosomal aberrations, or genetic disorders. In an attempt to normalize the short stature, growth hormone (GH) is administered to these children. The aim of this literature review was to collect information about the craniofacial morphology and dental maturity in these children and to present the existing knowledge on the effect of GH treatment on the above structures...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28367605/prediction-of-class-ii-improvement-after-rapid-maxillary-expansion-in-early-mixed-dentition
#14
Alberto Caprioglio, Chiara Bergamini, Lorenzo Franchi, Nicolò Vercellini, Piero Antonio Zecca, Riccardo Nucera, Rosamaria Fastuca
BACKGROUND: The aim of this study is to identify cephalometric pretreatment parameters for prediction of Class II improvement induced by rapid maxillary expansion. METHODS: Lateral cephalograms of 30 patients (mean age 8.3 ± 1.6 years old) showing Class II molar relationship and undergone to rapid maxillary expansion on the upper deciduous molars were traced before treatment, and molar relation changes were evaluated on dental casts before and after treatment...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28317085/perception-of-smile-esthetics-by-laypeople-of-different-ages
#15
Chompunuch Sriphadungporn, Niramol Chamnannidiadha
BACKGROUND: Age is a factor affecting smile esthetics. Three variables of smile esthetics associated with the maxillary anterior teeth and age-related changes have recently received considerable attention: (i) the incisal edge position of the maxillary central incisors, (ii) the maxillary gingival display, and (iii) the presence of a black triangle between the maxillary central incisors. The aim of this study was to evaluate the influence of age on smile esthetic perception based on these three variables in a group of Thai laypeople...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28164257/skeletal-and-dentoalveolar-bilateral-dimensions-in-unilateral-palatally-impacted-canine-using-cone-beam-computed-tomography
#16
Mariel Franchesca D Oleo-Aracena, Luis Ernesto Arriola-Guillén, Yalil Augusto Rodríguez-Cárdenas, Gustavo Armando Ruíz-Mora
BACKGROUND: The aim of this investigation was to compare skeletal and dentoalveolar measurements of subject with unilateral palatally impacted canine versus the unaffected contralateral side on cone beam computed tomography (CBCT). METHODS: A cross-sectional study (split mouth design) that included 28 CBCTs (i.e., 56 sides) with unilaterally impacted maxillary canines was performed. After conducting a pilot test to gauge the researcher, heights and widths of skeletal and dentoalveolar variables obtained in the maxilla were measured using coronal and axial views...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28164256/torque-differences-due-to-the-material-variation-of-the-orthodontic-appliance-a-finite-element-study
#17
Spyridon N Papageorgiou, Ludger Keilig, Vaska Vandevska-Radunovic, Theodore Eliades, Christoph Bourauel
BACKGROUND: Torque of the maxillary incisors is crucial to occlusal relationship and esthetics and can be influenced by many factors. The aim of this study was to assess the relative influence of the material of the orthodontic appliance (adhesive, bracket, ligature, and wire) on tooth displacements and developed stresses/strains after torque application. METHODS: A three-dimensional upper right central incisor with its periodontal ligament (PDL) and alveolus was modeled...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28133716/influence-of-uncontrolled-diabetes-mellitus-on-periodontal-tissues-during-orthodontic-tooth-movement-a-systematic-review-of-animal-studies
#18
REVIEW
Shariq Najeeb, Fahad Siddiqui, Saad Bin Qasim, Zohaib Khurshid, Sana Zohaib, Muhammad Sohail Zafar
Diabetes mellitus (DM) may adversely affect periodontal tissues during orthodontic tooth movement (OTM). The aim of this review is to systematically analyze and review animal studies investigating the effect of DM on periodontal tissues during OTM. An electronic search was conducted via PubMed/Medline, Google Scholar, Embase, ISI Web of Knowledge, and Cochrane Central Register of Controlled Trials (CONTROL) using the keywords "diabetes," "orthodontics," and "tooth movement" for studies published between January 2000 and August 2016...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28133715/factors-affecting-dental-biofilm-in-patients-wearing-fixed-orthodontic-appliances
#19
Li Mei, Joyce Chieng, Connie Wong, Gareth Benic, Mauro Farella
BACKGROUND: The aim of this study is to investigate the amount and the distribution of biofilm in patients wearing fixed appliances and its relation with age, gender, frequency of tooth brushing, and patient motivation. METHODS: The sample comprised 52 patients (15.5 ± 3.6 years old, 30 females and 22 males) wearing fixed orthodontic appliances. Dental biofilm was assessed using a modified plaque index (PI). A questionnaire was used to collect patient's information, including gender, age, treatment motivation, and frequency of tooth brushing...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28092094/comparison-and-evaluation-of-stresses-generated-by-rapid-maxillary-expansion-and-the-implant-supported-rapid-maxillary-expansion-on-the-craniofacial-structures-using-finite-element-method-of-stress-analysis
#20
Varun Jain, Tarulatha R Shyagali, Prabhuraj Kambalyal, Yagnesh Rajpara, Jigar Doshi
BACKGROUND: The study aimed to evaluate and compare the stress distribution and 3-dimensional displacements along the craniofacial sutures in between the Rapid maxillary Expansion (RME) and Implant supported RME (I-RME). METHODS: Finite element model of the skull and the implants were created using ANSYS software. The finite element model thus built composed of 537692 elements and 115694 nodes in RME model & 543078 elements and 117948 nodes with implants model. The forces were applied on the palatal surface of the posterior teeth to cause 5mm of transverse displacement on either side of the palatal halves, making it a total of 10mm...
December 2017: Progress in Orthodontics
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