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Progress in Orthodontics

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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
#1
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
https://www.readbyqxmd.com/read/28066875/evaluating-the-effects-of-consolidation-on-intrusion-and-retraction-using-temporary-anchorage-devices-a-fem-study
#2
Monica Namburi, Sleevaraju Nagothu, Chetan S Kumar, N Chakrapani, C H Hanumantharao, Supradeep K Kumar
BACKGROUND: Extraction of premolars and retracting the anterior teeth using mini-implants and anterior retraction hooks became advent now a day. In such treatments, consolidation of arches is not done in regular practice. So, the present study is concentrated on effects of consolidation in two implant and three implant combinations of retraction and intrusion. METHODS: A three-dimensional FEM model of maxillary teeth and periodontal ligament housed in the alveolar bone with the first premolars extracted is generated with appropriate number of elements and nodes...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28066874/the-effect-of-a-lidocaine-prilocaine-topical-anesthetic-on-pain-and-discomfort-associated-with-orthodontic-elastomeric-separator-placement
#3
M Abu Al-Melh, L Andersson
BACKGROUND: The initial placement of orthodontic elastomeric separators can be uncomfortable and painful. Therefore, it is important to relieve this disturbing sensation to create a discomfort or pain-free orthodontic visit. The purpose of this study was to investigate the effect of a lidocaine/prilocaine topical anesthetic on pain and discomfort associated with the placement of orthodontic elastomeric separators. METHODS: Fifty subjects aging between 20-35 years were included in this study...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/27891568/oral-hygiene-compliance-in-orthodontic-patients-a-randomized-controlled-study-on-the-effects-of-a-post-treatment-communication
#4
Mauro Cozzani, Giulia Ragazzini, Alessia Delucchi, Sabrina Mutinelli, Carlo Barreca, Daniel J Rinchuse, Roberto Servetto, Vincenzo Piras
BACKGROUND: Several studies have recently demonstrated that a post-treatment communication to explain the importance of an oral hygiene can improve the orthodontic patients' compliance over a period of 66 days. The main goal of this study is to evaluate the effects of a structured follow-up communication after orthodontic appliance application on oral hygiene compliance after 30-40 days. METHODS: Eighty-four orthodontic participants enrolled from patients who were beginning fixed orthodontic treatment at the Orthodontic Department, Gaslini Hospital, Genova, between July and October 2014 were randomly assigned to one of three trial arms...
December 2016: Progress in Orthodontics
https://www.readbyqxmd.com/read/27819127/evaluation-of-the-antibacterial-activity-of-a-conventional-orthodontic-composite-containing-silver-hydroxyapatite-nanoparticles
#5
Ahmad Sodagar, Azam Akhavan, Ehsan Hashemi, Sepideh Arab, Maryam Pourhajibagher, Kosar Sodagar, Mohammad Javad Kharrazifard, Abbas Bahador
BACKGROUND: One of the most important complications of fixed orthodontic treatment is the formation of white spots which are initial carious lesions. Addition of antimicrobial agents into orthodontic adhesives might be a wise solution for prevention of white spot formation. The aim of this study was to evaluate the antibacterial properties of a conventional orthodontic adhesive containing three different concentrations of silver/hydroxyapatite nanoparticles. METHODS: One hundred and sixty-two Transbond XT composite discs containing 0, 1, 5, and 10 % silver/hydroxyapatite nanoparticles were prepared and sterilized...
December 2016: Progress in Orthodontics
https://www.readbyqxmd.com/read/27800593/biocompatibility-of-nanosilver-coated-orthodontic-brackets-an-in-vivo-study
#6
Gamze Metin-Gürsoy, Lale Taner, Emre Barış
BACKGROUND: Nanosilver particles of which antibacterial and antifungal properties have been shown in various in vitro and in vivo studies are used in many medical and dental fields for the prevention of infection. In this study, it is intended to evaluate the biocompatibility of nanosilver-coated brackets. METHODS: Nanosilver coating process was applied to the standard orthodontic brackets by a physical vapor deposition system. Brackets were coated with nanosilver particles of 1 μ thickness...
December 2016: Progress in Orthodontics
https://www.readbyqxmd.com/read/27800592/stress-and-displacement-pattern-evaluation-using-two-different-palatal-expanders-in-unilateral-cleft-lip-and-palate-a-three-dimensional-finite-element-analysis
#7
Anoop Mathew, K S Nagachandran, Devaki Vijayalakshmi
BACKGROUND: In this finite element (FE) study, the stress distribution and displacement pattern was evaluated in the mid-palatal area and around circum-maxillary sutures exerted by bone-borne palatal expander (BBPE) in comparison with conventional HYRAX rapid palatal expander in unilateral cleft lip and palate. METHODS: Computed tomography scan images of a patient with unilateral cleft palate was used to create a FE model of the maxillary bone along with circum-maxillary sutures...
December 2016: Progress in Orthodontics
https://www.readbyqxmd.com/read/27747529/perception-of-children-and-mothers-regarding-dental-aesthetics-and-orthodontic-treatment-need-a-cross-sectional-study
#8
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
https://www.readbyqxmd.com/read/27747528/evaluation-of-the-stiffness-characteristics-of-rapid-palatal-expander-screws
#9
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
https://www.readbyqxmd.com/read/27722998/craniofacial-features-as-assessed-by-lateral-cephalometric-measurements-in-children-with-down-syndrome
#10
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
https://www.readbyqxmd.com/read/27696312/influence-of-maxillary-posterior-dentoalveolar-discrepancy-on-angulation-of-maxillary-molars-in-individuals-with-skeletal-open-bite
#11
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
https://www.readbyqxmd.com/read/27696311/effectiveness-of-minimally-invasive-surgical-procedures-in-the-acceleration-of-tooth-movement-a-systematic-review-and-meta-analysis
#12
REVIEW
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
https://www.readbyqxmd.com/read/27667817/three-dimensional-mapping-of-cortical-bone-thickness-in-subjects-with-different-vertical-facial-dimensions
#13
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
https://www.readbyqxmd.com/read/27667816/maxillary-anterior-en-masse-retraction-using-different-antero-posterior-position-of-mini-screw-a-3d-finite-element-study
#14
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
https://www.readbyqxmd.com/read/27641422/three-dimensional-evaluation-of-root-dimensions-and-alveolar-ridge-width-of-maxillary-lateral-incisors-in-patients-with-unilateral-agenesis
#15
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
https://www.readbyqxmd.com/read/27641421/a-retrospective-cephalometric-study-on-pharyngeal-airway-space-changes-after-rapid-palatal-expansion-and-herbst-appliance-with-or-without-skeletal-anchorage
#16
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
https://www.readbyqxmd.com/read/27615261/systematic-review-for-orthodontic-and-orthopedic-treatments-for-anterior-open-bite-in-the-mixed-dentition
#17
REVIEW
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
https://www.readbyqxmd.com/read/27593408/stiffness-comparison-of-mushroom-and-straight-ss-and-tma-lingual-archwires
#18
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
https://www.readbyqxmd.com/read/27593407/correlational-study-of-impacted-and-non-functional-lower-third-molar-position-with-occurrence-of-pathologies
#19
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
https://www.readbyqxmd.com/read/27480987/effects-of-various-remineralizing-agents-on-the-outcome-of-post-orthodontic-white-spot-lesions-wsls-a-clinical-trial
#20
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
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