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https://www.readbyqxmd.com/read/28340249/orthodontic-strain-affects-the-hippo-pathway-effector-yap-concomitant-with-proliferation-in-human-periodontal-ligament-fibroblasts
#1
Diana Huelter-Hassler, Pascal Tomakidi, Thorsten Steinberg, Britta A Jung
Objectives: During orthodontic tooth movement (OTM), human periodontal ligament fibroblasts (hPDLFs) sense, and respond to mechanical forces. Since the molecular constituents involved in these processes are not fully elucidated, the objective of the present study was to identify further key molecules of the cellular strain response. Materials and Methods: Primary hPDLFs were strained with a static equiaxial strain of 2.5 per cent for 15 minutes, 1 hour, 6 hours, and 24 hours...
March 17, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28340098/effect-of-fluoride-releasing-resin-composite-in-white-spot-lesions-prevention-a-single-centre-split-mouth-randomized-controlled-trial
#2
Mohannad M Alabdullah, Alaa Nabawia, Mowaffak A Ajaj, Humam Saltaji
Introduction: The objective of this two-arm split-mouth randomized trial, was to evaluate the ability of fluoride-releasing resin composite to prevent demineralization and white spot lesion (WSL) formation, during orthodontic treatment with fixed appliances. Methods: Patients needing comprehensive orthodontic treatment were randomly allocated into two groups, according to the half split-mouth technique. This trial examined a total of 300 teeth in each group: the control group, in which brackets were fixed with a non-fluoride-containing adhesive resin; and the intervention group, in which brackets were fixed with a fluoride-containing adhesive resin...
March 2, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339790/does-systemic-administration-of-casein-phosphopeptides-affect-orthodontic-movement-and-root-resorption-in-rats
#3
Lachlan Crowther, Gang Shen, Mohammed Almuzian, Allan Jones, William Walsh, Rema Oliver, Peter Petocz, Nour E Tarraf, M Ali Darendeliler
Objectives: To assess the potential effects of casein phosphopeptides (CPPs) on orthodontically induced iatrogenic root resorption (OIIRR) and orthodontic teeth movement. Materials and methods: Forty Wistar rats (aged 11 weeks) were randomly divided into experimental group (EG; n = 20) that received a diet supplemented with CPP and control group (CG; n = 20) devoid of diet supplement. A 150 g force was applied using nickel titanium (NiTi) coil that was bonded on maxillary incisors and extended unilaterally to a maxillary first molar...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339736/extractions-retention-and-stability-the-search-for-orthodontic-truth
#4
Sheldon Peck
Background and objectives: From the beginnings of modern orthodontics, questions have been raised about the extraction of healthy permanent teeth in order to correct malocclusions. A hundred years ago, orthodontic tooth extraction was debated with almost religious intensity by experts on either side of the issue. Sheldon Friel and his mentor Edward H. Angle both had much to say about this controversy. Today, after significant progress in orthodontic practice, similar arguments are being voiced between nonextraction expansionists and those who see the need for tooth extractions in some orthodontic patients...
February 23, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339713/evaluation-of-the-effectiveness-of-intermittent-mechanical-pressure-with-short-loading-duration-new-type-of-intermittent-force-for-orthodontic-treatment
#5
Kento Shoman, Yoshiaki Sato, Eisuke Nishikawa, Yuusuke Kudo, Takaaki Yamamoto, Junichiro Iida
Background: Since it is difficult to precisely control the magnitude of force in orthodontic practice, controlling the duration of force is expected to prevent tissue damage. The use of an actuator as an appliance for intermittent force application is a possible solution for controlling the duration. However, effectiveness of an actuator for controlling the duration is still not clear. Aim: To determine whether a short loading duration of intermittent force has the potential to maintain a sound condition of the capillaries and induce dilation of capillaries, which is a requisite phenomenon for orthodontic tooth movement...
February 22, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339645/the-extent-of-root-resorption-and-tooth-movement-following-the-application-of-ascending-and-descending-magnetic-forces-a-prospective-split-mouth-microcomputed-tomography-study
#6
Tiffany Teen Yu Huang, Selma Elekdag-Turk, Oyku Dalci, Mohammed Almuzian, Ersan Ilsay Karadeniz, Selma Elekdag-Turk, Carmen Gonzales, Peter Petocz, Tamer Turk, M Ali Darendeliler
Objective: Various factors have been examined in the literature in an attempt to reduce the incidence and severity of root resorption. The purpose of the present investigation is to test the null hypothesis that there is no difference in relation to force level using gradually increasing (ascending) and decreasing (descending) orthodontic force generated by magnets on the severity of Orthodontically Induced Inflammatory Iatrogenic Root Resorption (OIIRR) and amount of tooth movement. Methods: Twenty maxillary first premolars from 10 patients were subjected to ascending (25-225 g, magnets in attraction) and descending (225 to 25 g, magnets in repulsion) buccal forces using a split mouth design over an 8-week period...
February 16, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339612/orthodontically-induced-cervical-root-resorption-in-humans-is-associated-with-the-amount-of-tooth-movement
#7
Alexander Dudic, Catherine Giannopoulou, Paolo Meda, Xavier Montet, Stavros Kiliaridis
Introduction: The aim of this study was to investigate the variation in the amount of the orthodontically induced cervical root resorption and the association with several factors, such as the amount of tooth displacement, location of tooth in the maxilla or mandible, and presence of an interference that may influence the amount of root resorption. Subjects and methods: This study included 30 subjects (20 females, 10 males) with an age range of 11.3 to 43.0 years...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339597/compositional-differences-in-multi-species-biofilms-formed-on-various-orthodontic-adhesives
#8
Jung-Sub An, Kyungsun Kim, Soha Cho, Bum-Soon Lim, Sug-Joon Ahn
Objectives: To investigate the aspects of multi-species biofilm formation on various orthodontic adhesives with different surface characteristics. Methods: Multi-species biofilms using 13 bacterial species were grown on the surfaces of composite, compomer, and resin-modified glass-ionomer cement (RMGI). The changes in Streptococcus mutans (Sm), Streptococcus sobrinus (Ss), Porphyromonas gingivalis (Pg), Aggregatibacter actinomycetemcomitans (Aa), and total bacteria were determined at day 1 (T1) and day 4 (T2) using real-time polymerase chain reaction...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339591/comparison-of-the-force-levels-among-labial-and-lingual-self-ligating-and-conventional-brackets-in-simulated-misaligned-teeth
#9
Ahmad Alobeid, Tarek El-Bialy, Said Khawatmi, Cornelius Dirk, Andreas Jäger, Christoph Bourauel
Background/objective: The aim of this study was to evaluate force levels exerted by levelling arch wires with labial and lingual conventional and self-ligating brackets. Materials/methods: The tested orthodontic brackets were of the 0.022-in slot size for labial and 0.018-in for lingual brackets and were as follows: 1. Labial brackets: (i) conventional bracket (GAC-Twin, Dentsply), (ii) passive self-ligating (SL) brackets (Damon-Q®, ORMCO; Ortho classic H4™, Orthoclassic; FLI®SL, Rocky Mountain Orthodontics) and (iii) active SL brackets (GAC In-Ovation®C, DENTSPLY and SPEED™, Strite)...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339587/incisor-inclination-and-perceived-tooth-colour-changes
#10
Philip Ciucchi, Stavros Kiliaridis
Introduction: Social attractiveness is influenced by a variety of different smile-related factors. We evaluated whether the degree of upper central incisor proclination can result in tooth colour change. Methods: Forty young adult subjects (20-25 years) in good health with a complete sound dentition were selected. The subjects were seated in standardized light conditions with an above-directed light source. Their natural head position was stated as 0 degrees. To mimic the range of possible anterior torque movements they were asked to tilt their heads upward +15 degrees (upward tilting) and downward -15 degrees (downward tilting)...
January 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339580/the-integration-of-orthodontic-miniscrews-under-mechanical-loading-a-pre-clinical-study-in-rabbit
#11
B Giuliano Maino, Alberto Di Blasio, Davide Spadoni, Francesca Ravanetti, Carlo Galli, Antonio Cacchioli, Christos Katsaros, Mauro Gandolfini
Introduction: Orthodontic miniscrews are an increasingly popular choice to achieve absolute anchorage. The temporary use of miniscrews and their recent introduction have limited the debate over the biological aspect of the materials to that of the surface that permeates the field of dental implants. The aim of the present study was to investigate the integration of grade 5 titanium mini-implants with machined or sand blasted acid etched surface (SAE) under mechanical load in a rabbit tibia model of implant integration...
January 18, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28339510/3d-dentofacial-photogrammetry-reference-values-a-novel-approach-to-orthodontic-diagnosis
#12
Mohamed I Masoud, Neetu Bansal, Jose C Castillo, Amornrut Manosudprasit, Veerasathpurush Allareddy, Arshan Haghi, Hannah C Hawkins, Erik Otárola-Castillo
Background: Orthodontic diagnostic standards generally use the cranial base as a reference and rely on samples selected by orthodontists. Objective: The purpose of this study was to provide male and female standards for a novel non-radiographic approach for orthodontic diagnosis that utilizes 3D dentofacial photogrammetry using the eyes and natural head orientation as references instead of the cranial base. Methods: One hundred and eighty females and 200 males between the ages of 18 and 35 years from 2 modeling agencies were orthodontically screened for near ideal occlusion...
November 3, 2016: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28338031/preoperative-analgesia-for-children-and-adolescents-to-reduce-pain-associated-with-dental-treatment
#13
Catherine McCann
Data sourcesCochrane Oral Health Group's Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), Medline, Embase, LILACS, ISI Web of Science, ClinicalTrials.gov and the WHO International Clinical Trials Registry Platform.Study selectionRandomised controlled clinical trials of analgesics given before dental treatment versus placebo or no analgesics in children and adolescents up to 17 years of age. Children and adolescents having dental treatment under sedation (including nitrous oxide/oxygen) or general anaesthesia were excluded...
March 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28338029/unclear-if-non-surgical-adjuncts-accelerate-orthodontic-treatment
#14
Ahmed Elkhadem, Moamen Sheba
Data sourcesCochrane Oral Health Group's Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), Medline, Embase, LILACS, the metaRegister of Controlled Trials, the US National Institutes of Health Trials Register and the WHO International Clinical Trials Registry Platform.Study selectionRandomised controlled trials of orthodontic treatment using fixed appliances along with non-surgical adjunctive interventions to accelerate tooth movement.Data extraction and synthesisTwo reviewers independently selected studies, abstracted data and assessed risk of bias...
March 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28337899/substance-p-expression-in-the-gingival-tissue-after-upper-third-molar-extraction-effect-of-ketoprofen-a-preliminary-study
#15
G M Abbate, A Mangano, P Sacerdote, G Amodeo, G Moschetti, L Levrini
The aim of this study was to evaluate substance P (SP) levels and the effect of a non-steroidal anti-inflammatory drug (NSAID), ketoprofen, on SP in the pericoronal gingival tissue after extraction of upper third molars. A sample of 20 young non-smoking systemically healthy adults of both sexes, with a healthy upper third molar to extract for orthodontic purposes, was selected. After extraction, a sample of the gingival tissue of the pericoronal region was collected with a sterile scalpel, placed into test tubes and kept frozen at -20°C until the SP determination...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337422/the-combined-use-of-computer-guided-minimally-invasive-flapless-corticotomy-and-clear-aligners-as-a-novel-approach-to-moderate-crowding-a-case-report
#16
Michele Cassetta, Federica Altieri, Stefano Pandolfi, Matteo Giansanti
The aim of this case report was to describe an innovative orthodontic treatment method that combined surgical and orthodontic techniques. The novel method was used to achieve a positive result in a case of moderate crowding by employing a computer-guided piezocision procedure followed by the use of clear aligners. A 23-year-old woman had a malocclusion with moderate crowding. Her periodontal indices, oral health-related quality of life (OHRQoL), and treatment time were evaluated. The treatment included interproximal corticotomy cuts extending through the entire thickness of the cortical layer, without a full-thickness flap reflection...
March 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28337419/smile-esthetics-evaluation-of-long-term-changes-in-the-transverse-dimension
#17
Sercan Akyalcin, Kenner Misner, Jeryl D English, Wick G Alexander, J Moody Alexander, Ron Gallerano
OBJECTIVE: To analyze the long-term changes in maxillary arch widths and buccal corridor ratios in orthodontic patients treated with and without premolar extractions. METHODS: The study included 53 patients who were divided into the extraction (n = 28) and nonextraction (n = 25) groups. These patients had complete orthodontic records from the pretreatment (T1), posttreatment (T2), and postretention (T3) periods. Their mean retention and postretention times were 4 years 2 months and 17 years 8 months, respectively...
March 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28337012/preparedness-of-undergraduate-dental-students-in-the-united-kingdom-a-national-study
#18
K Ali, A Slade, E Kay, D Zahra, C Tredwin
Aims To evaluate the self-perceived preparedness of final year dental undergraduate students in the United Kingdom.Methods Dental undergraduate students in their final year were invited by email through the Dental Schools Council (DSC) to provide their responses to an online preparedness assessment scale. The data analysis was carried out using the RUMM2030 software which is specifically designed for Rasch analysis, a measurement model based on item response theory.Results Students felt adequately prepared to carry out simple clinical procedures and communication skills...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28334054/lateral-cephalometric-analysis-for-treatment-planning-in-orthodontics-based-on-mri-compared-with-radiographs-a-feasibility-study-in-children-and-adolescents
#19
Alexander Heil, Eduardo Lazo Gonzalez, Tim Hilgenfeld, Philipp Kickingereder, Martin Bendszus, Sabine Heiland, Ann-Kathrin Ozga, Andreas Sommer, Christopher J Lux, Sebastian Zingler
OBJECTIVE: The objective of this prospective study was to evaluate whether magnetic resonance imaging (MRI) is equivalent to lateral cephalometric radiographs (LCR, "gold standard") in cephalometric analysis. METHODS: The applied MRI technique was optimized for short scanning time, high resolution, high contrast and geometric accuracy. Prior to orthodontic treatment, 20 patients (mean age ± SD, 13.95 years ± 5.34) received MRI and LCR. MRI datasets were postprocessed into lateral cephalograms...
2017: PloS One
https://www.readbyqxmd.com/read/28331854/dental-age-and-tooth-development-in-orthodontic-patients-with-agenesis-of-permanent-teeth
#20
Jozo Badrov, Tomislav Lauc, Enita Nakaš, Ivan Galić
Objective. To compare the development of permanent teeth in a group of children with the congenitally missing permanent teeth (CMPT) and corresponding nonaffected group. Methods. The formation stages of all developing permanent teeth were determined on 345 panoramic radiographs (OPTs) by the method of Haavikko (1970), and dental age was calculated. The paired samples t-test was used to compare the differences between dental age (DA) and chronological age (CA) in those with CMPT and those not affected. Spearman test was used to evaluate the correlation between DA-CA and the number of missing teeth...
2017: BioMed Research International
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