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Orthodontics

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https://www.readbyqxmd.com/read/27933446/permanent-tooth-agenesis-in-non-syndromic-robin-sequence-and-cleft-palate-prevalence-and-patterns
#1
Anneline de Smalen, Daan P F van Nunen, Ruurd R Hermus, Edwin M Ongkosuwito, Arjen J van Wijk, J Peter W Don Griot, Corstiaan C Breugem, Gem J C Kramer
OBJECTIVES: Partial tooth agenesis is frequently observed in Robin sequence. Tooth anomalies are increasingly considered as an extended phenotype of the cleft palate population. The study objective was to compare the prevalence and patterns of tooth agenesis in a group of patients with non-syndromic Robin sequence (ns-RS) and a group with non-syndromic cleft palate (ns-CP). MATERIALS AND METHODS: The panoramic radiographs of 115 ns-RS and 191 ns-CP patients were assessed for agenesis of the permanent dentition (excluding third molars) and the patterns recorded using the Tooth Agenesis Code...
December 9, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27932407/torque-differences-according-to-tooth-morphology-and-bracket-placement-a-finite-element-study
#2
Spyridon N Papageorgiou, Iosif Sifakakis, Ludger Keilig, Raphael Patcas, Stefan Affolter, Theodore Eliades, Christoph Bourauel
INTRODUCTION: Torque of the maxillary incisors is essential in esthetics and proper occlusion, while torque expression is influenced by many factors. The aim of this finite element study was to assess the relative effect of tooth morphology, bracket prescription, and bracket positioning on tooth displacement and developed stresses/strains after torque application. METHODS: A three-dimensional upper right central incisor with its periodontal ligament (PDL) and alveolus was modelled...
December 8, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27932406/diagnostic-concordance-between-skeletal-cephalometrics-radiograph-based-soft-tissue-cephalometrics-and-photograph-based-soft-tissue-cephalometrics
#3
Riccardo Nucera, Antonino Lo Giudice, Mirea Bellocchio, Paola Spinuzza, Alberto Caprioglio, Giancarlo Cordasco
OBJECTIVE: This study aims to investigate the diagnostic concordance between skeletal cephalometrics and soft-tissue cephalometrics in identifying facial lower third characteristics. MATERIALS AND METHODS: We compared a skeletal cephalometric analysis (SCA) to a soft-tissue analysis performed on cephalometric radiographs (rSTCA) and to one performed on profile photograph (pSTCA). Ninety-six pre-treatment digital lateral cephalometric radiographs and 96 digital profile photographs were randomly selected for this study (patients' mean age: 18...
December 8, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27927682/interceptive-orthodontics-a-practical-guide-to-occlusal-management
#4
Stefan Abela
No abstract text is available yet for this article.
December 7, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27922952/effect-of-energy-drink-on-bone-formation-in-the-expanded-inter-premaxillary-suture
#5
Muhammet Birlik, Hakki Oguz Kazancioglu, Mehmet Şerif Aydin, Sertac Aksakalli, Seref Ezirganli
Maxillary expansion of the median palatal suture is a common procedure in orthodontics. Even after retention, there is a strong tendency to relapse in the expanded suture. The authors' objectives are to accelerate the bone formation process in the expanded suture and to reduce the required retention time by using an energy drink (ED). Twenty rats were divided into 2 groups (n = 20). The expansion-only group was defined as the control group (Group C). The other group was defined as the expansion-plus-energy drink group (Group ED)...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27918313/a-comparison-of-the-mechanical-measures-used-for-assessing-orthodontic-mini-implant-stability
#6
Yara K Hosein, S Jeffrey Dixon, Amin S Rizkalla, Ali Tassi
PURPOSE: Mechanical loosening remains a common complication associated with mini-implant failure. The purpose of this study was to compare common mechanical measures of mini-implant stability to determine their association and reliability. MATERIALS AND METHODS: Ninety self-drilling orthodontic mini-implants from 6 manufacturers were inserted into artificial bone blocks. Insertion torques (ITs) and Periotest values (PVs) were measured. Subsequently, mini-implants underwent pull-out testing for measures of pull-out load (POL) and screw displacement (ScrD)...
December 1, 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27916253/smart-sliding-hook-as-a-ready-to-use-auxillary-in-orthodontist-s-inventory
#7
Palash Modi, Sakshi Aggarwal, Preetinder Bhatia, Palak Modi
Orthodontic treatment often requires extraction or distalization for gaining space. With both treatment modalities, emphasis has always been given to the simplicity and effectiveness of the treatment, time required for each visit, cost and minimum requirement of the inventory. To accomplish this, various appliances and auxiliaries have been designed in the past of which sliding jigs are commonly used. They pose various clinical problems of which time to fabricate them for each patient is one as they cannot be stored in a prefabricated form...
December 2016: Singapore Dental Journal
https://www.readbyqxmd.com/read/27915135/primary-stability-and-viscoelastic-displacement-of-mini-implant-system-under-loading
#8
Jim Lee, Yong-Hoon Jeong, Joseph Pittman, Toru Deguchi, William M Johnston, Henry W Fields, Do-Gyoon Kim
BACKGROUND: The objectives of the current study were to examine the effects of mini-implant diameters on 1) primary stability before bone properties are changed by active peri-implant bone remodeling and 2) the time-dependent displacement of mini-implant systems in bone under a functional radial loading and their associations with bone mineral density. METHODS: Twenty one, 8mm length mini-implants (7 each for 1.4mm, 1.6mm, and 2mm diameters) were placed in mandibular sections of human cadavers (4 males and 3 females, average 69...
November 24, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27913095/soft-hard-tissues-and-pharyngeal-airway-volume-changes-following-maxillomandibular-transverse-osteodistraction-computed-tomography-and-three-dimensional-laser-scanner-evaluation
#9
Francesca Antonella Bianchi, Giovanni Gerbino, Marina Corsico, Eleonora Schellino, Niccolò Barla, Laura Verzè, Guglielmo Ramieri
INTRODUCTION: Maxillomandibular transverse osteodistraction (MMTOD) is an alternative approach to the traditional treatment for transverse maxillary and mandibular deficiencies and crowding. The aim was to report soft and hard-tissues changes and airway volume variation. METHODS: In this study, skeletally mature, non-syndromic patients with transverse maxillary and mandibular hypoplasia, who underwent a MMTOD between 2010 and 2012, were included. Surgical changes were analysed using clinical evaluation, three-dimensional facial surface data and computed tomography analysis before (T0) and after the completion of post-op orthodontic treatment (T1)...
October 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27909758/release-of-fluoride-from-orthodontic-adhesives-and-penetration-into-enamel
#10
Panita Suebsureekul, Smorntree Viteporn
OBJECTIVE: The purpose of this work was to compare fluoride release from three orthodontic adhesives and fluoride penetration into the enamel surface. MATERIALS AND METHODS: A total of 156 extracted human premolar teeth were randomly assigned to three experimental groups and one control group (without bonding) with 39 teeth per group. Brackets were bonded to teeth using Fuji Ortho LC(®), Illuminate(®), or Light Bond(®). The amount of fluoride released (ppm) into artificial saliva was measured by a fluoride ion-selective electrode connected to an ion analyzer on days 1, 3, 7, and 30...
December 1, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/27908527/-historical-review-on-obstructive-sleep-apnea-in-children
#11
Y H Chien, C Guilleminault
An historical review on the discoveries on pediatric obstructive sleep apnea syndrome and sleep-disordered breathing is outlined. Starting with the description by Dickens of "Joe" the obese, snoring and sleepy individual, the authors trace more than 50 years of questions and research starting with the lean adult to the child and from the recognition of obstructive sleep apnea syndrome to the outline of upper-airway resistance syndrome. The pathophysiological knowledge on sleep-disordered breathing has evolved over time, as have treatment approaches in children, from tracheostomy to positive-airway-pressure therapy, to adenotonsillectomy with and without orthodontic treatments to oral-facial myofunctional therapy...
November 28, 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/27907894/interventions-for-orthodontically-induced-white-spot-lesions-a-systematic-review-and-meta-analysis
#12
REVIEW
Damian Höchli, Monika Hersberger-Zurfluh, Spyridon N Papageorgiou, Theodore Eliades
BACKGROUND: Although orthodontic white spot lesions (WSLs) are one of the most often and most evident adverse effects of comprehensive fixed appliance treatment, the efficacy of interventions for WSLs has not yet been adequately assessed in an evidence-based manner. OBJECTIVE: Aim of this systematic review was to assess the therapeutic and adverse effects of interventions to treat post-orthodontic WSLs from randomized trials in human patients. SEARCH METHODS: An unrestricted electronic search of eight databases from inception to May 2016...
October 17, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/27905816/cementocyte-cell-death-occurs-in-rat-cellular-cementum-during-orthodontic-tooth-movement
#13
Humihiro Matsuzawa, Naoko Toriya, Yuya Nakao, Moe Konno-Nagasaka, Toshiya Arakawa, Miki Okayama, Itaru Mizoguchi
OBJECTIVE: To clarify the mechanism of root resorption during orthodontic treatment, we examined cementocyte cell death and root resorption in the cellular cementum on the pressure side during experimental tooth movement. MATERIALS AND METHODS: Using 8-week-old male Wistar rats, the right first molar was pushed mesiobuccally with a force of 40 g by a Ni-Ti alloy wire while the contralateral first molar was used as a control. Localization and number of cleaved caspase-3-positive and single-stranded DNA (ssDNA) - positive cells were evaluated using dual-label immunohistochemistry with anticleaved caspase-3 and anti-ssDNA antibodies...
December 1, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/27903250/effectiveness-of-bovine-derived-xenograft-versus-bioactive-glass-with-periodontally-accelerated-osteogenic-orthodontics-in-adults-a-randomized-controlled-clinical-trial
#14
Maha A Bahammam
BACKGROUND: Periodontally accelerated osteogenic orthodontics (PAOO) combines periodontal therapy with orthodontic therapy, which minimises treatment time. This study compared the effectiveness of a bovine-derived xenograft with that of bioactive glass when combined with PAOO for the treatment of adult patients with moderate crowding of the teeth. METHODS: In this prospective, single-masked clinical trial, 33 orthodontic patients (20 women, 13 men; mean age 21.2 ± 1...
November 30, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27901237/iatrogenics-in-orthodontics-and-its-challenges
#15
Gustavo Mattos Barreto, Henrique Oliveira Feitosa
Introduction: Orthodontics has gone through remarkable advances for those who practice it with dignity and clinical quality, such as the unprecedented number of patients treated of some type of iatrogenic problems (post-treatment root resorptions; occlusal plane changes; midline discrepancies, asymmetries, etc). Several questions may raise useful reflections about the constant increase of iatrogenics. What is causing it? Does it occur when dentists are properly trained? In legal terms, how can dentists accept these patients? How should they be orthodontically treated? What are the most common problems? Objective: This study analyzed and discussed relevant aspects to understand patients with iatrogenic problems and describe a simple and efficient approach to treat complex cases associated with orthodontic iatrogenics...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27901236/class-iii-malocclusion-with-maxillary-deficiency-mandibular-prognathism-and-facial-asymmetry
#16
Guilherme de Araújo Almeida
This article reports the clinical case of a female patient with history of unsuccessful orthodontic treatment. She presented with Class III malocclusion, mandibular and maxillary constriction, anterior crossbite and facial asymmetry resulting from laterognathism triggered by hyperactivity of the condyle revealed by vertical elongation of the right mandibular ramus. Patient's treatment consisted of orthodontic mechanics and two orthognathic surgical interventions with satisfactory and stable outcomes. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements for obtaining the BBO Diplomate title...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27901235/use-of-miniplates-as-a-method-for-orthodontic-anchorage-a-case-report
#17
Fernando Gianzanti Peres, Luis Eduardo Marques Padovan, Leandro Eduardo Kluppel, Gustavo Calvalcanti Albuquerque, Paulo Cesar Ulson de Souza, Marcela Claudino
Introduction: Temporary anchorage devices (TADs) have been developed to be used as direct adjuncts in orthodontic treatment and have facilitated treatment of more complex orthodontic cases, including patients with dental impaction. Objectives: This clinical case reports the applicability of TADs in the orthodontic treatment of a patient with impacted mandibular second molars. Surgical and orthodontic procedures related to the use of miniplates were also discussed in this study...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27901234/air-powder-polishing-on-self-ligating-brackets-after-clinical-use-effects-on-debris-levels
#18
Mônica L S Castro Aragón, Leandro Santiago Lima, David Normando
Introduction: Debris buildup on brackets and arch surfaces is one of the main factors that can influence the intensity of friction between bracket and orthodontic wire. Objective: This study sought to evaluate the effect of air-powder polishing cleaning on debris levels of self-ligating ceramic brackets at the end of orthodontic treatment, compared to the behavior of conventional brackets. Methods: Debris levels were evaluated in metal conventional orthodontic brackets (n = 42) and ceramic self-ligating brackets (n = 42) on canines and premolars, arranged in pairs...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27901232/reliability-of-overbite-depth-indicator-odi-and-anteroposterior-dysplasia-indicator-apdi-in-the-assessment-of-different-vertical-and-sagittal-dental-malocclusions-a-receiver-operating-characteristic-roc-analysis
#19
Farheen Fatima, Mubassar Fida, Attiya Shaikh
Introduction: Differential diagnosis of skeletal and dental relationships is crucial for planning orthodontic treatment. Overbite depth indicator (ODI) and anteroposterior dysplasia indicator (APDI) had been introduced in the past for assessment of vertical and sagittal jaw relationships, respectively. Objective: The objectives of this study were to evaluate the reliability of ODI and APDI in overbite and Angle malocclusions, as well as assess their diagnostic reliability among males and females of different age groups...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27901230/esthetic-perception-of-orthodontic-appliances-by-brazilian-children-and-adolescents
#20
Deise Caldas Kuhlman, Tatiana Araújo de Lima, Candice Belchior Duplat, Jonas Capelli
Objective: The objective of this present study was to understand how children and adolescents perceive esthetic attractiveness of a variety of orthodontic appliances. It also analyzed preferences according to patients' age, sex and socioeconomic status. Methods: A photograph album consisting of eight photographs of different orthodontic appliances and clear tray aligners placed in a consenting adult with pleasing smile was used. A sample of children or adolescents aged between 8 and 17 years old (n = 276) was asked to rate each image for its attractiveness on a visual analog scale...
September 2016: Dental Press Journal of Orthodontics
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