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Orthodontics

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https://www.readbyqxmd.com/read/28086858/the-influence-of-adding-modified-zirconium-oxide-titanium-dioxide-nano-particles-on-mechanical-properties-of-orthodontic-adhesive-an-in-vitro-study
#1
Nayef H Felemban, Mohamed I Ebrahim
BACKGROUND: The purpose of this in-vitro study was to examine the effect of incorporating different concentrations of Zirconium oxide-Titanium dioxide (ZrO2-TiO2) nanoparticles, which can have antibacterial properties, on the mechanical properties of an orthodontic adhesive. METHODS: ZrO2-TiO2 (Zirconium oxide, HWNANO, Hongwu International Group Ltd, China) -Titanium dioxide, Nanoshell, USA) nanopowder were incorporated into orthodontic adhesive (Transbond XT, 3 M Unitek, Monrovia, USA) with different concentrations (0...
January 13, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28078880/orthodontic-forces-modulate-insulin-like-growth-factor-binding-protein-5-changes-in-gingival-crevicular-fluid
#2
A Ballini, L Santacroce, S Cantore, R Saini, F Mastrangelo, A Desiate, S Scacco
Orthodontic tooth movement results from the response of the periodontal tissue to orthodontic force, which leads to modeling and remodeling of the surrounding alveolar bone. The response is considered to occur through the activation of specific signaling pathways, many of which are known, all acting to ultimately result in tooth movement. Much is known about the actions of these two cells, and the signaling pathways that affect them, both in bone and orthodontic literature, however, to date, little work has been carried out to examine the effect of the insulin-like growth factor binding proteins (IGFBP) in orthodontics...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28077886/effect-of-dental-chair-light-on-enamel-bonding-of-orthodontic-brackets-using-light-cure-based-adhesive-system-an-in-vitro-study
#3
Anil Tiwari, Tarulatha Shyagali, Sarvraj Kohli, Rishi Joshi, Abhishek Gupta, Rana Tiwari
AIM: The aim of this in vitro study was to evaluate the influence of the Dental chair light on the bond strength of light cured composite resin. MATERIALS AND METHODS: Sixty therapeutically extracted human premolar teeth were randomly allocated to two groups of 30 specimens each. In both groups light cured composite resin (Transbond XT) and MBT premolar metal brackets (3M Unitek) was used to bond brackets. In group I and II light curing was done using Light-emitting diode light curing units without and with the dental chair light respectively...
October 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28076465/the-effect-of-capsaicin-on-expression-patterns-of-cgrp-in-trigeminal-ganglion-and-trigeminal-nucleus-caudalis-following-experimental-tooth-movement-in-rats
#4
Zhou Yang, Long Hu, Y E Niansong, Liao Lina, Yang Xin, Jian Fan, Wang Yan, Lai Wenli
Objectives: The aim of this study was to explore the effect of capsaicin on expression patterns of calcitonin gene-related peptide (CGRP) in the trigeminal ganglion (TG) and trigeminal subnucleus caudalis (Vc) following experimental tooth movement. Material and Methods: Male Sprague-Dawley rats were used in this study and divided into small-dose capsaicin+force group, large-dose capsaicin+force group, saline+force group, and no force group. Closed coil springs were used to mimic orthodontic forces in all groups except for the no force group, in which springs were inactivated...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28076458/risk-of-developing-palatally-displaced-canines-in-patients-with-early-detectable-dental-anomalies-a-retrospective-cohort-study
#5
Daniela Gamba Garib, Melissa Lancia, Renata Mayumi Kato, Thais Marchini Oliveira, Lucimara Teixeira das Neves
Objective: To estimate the risk of PDC occurrence in children with dental anomalies identified early during mixed dentition. Material and Methods: The sample comprised 730 longitudinal orthodontic records from children (448 females and 282 males) with an initial mean age of 8.3 years (SD=1.36). The dental anomaly group (DA) included 263 records of patients with at least one dental anomaly identified in the initial or middle mixed dentition. The non-dental anomaly group (NDA) was composed of 467 records of patients with no dental anomalies...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28073624/european-college-of-orthodontics-commission-of-affiliation-and-titularisation
#6
Alexis Moreau
: Date of birth: 2/8/1982; sex: male. A. PRETREATMENT RECORDS: 25 years; 7/3/2008. DIAGNOSIS: Very severe Class III malocclusion in adult dentition in hyperdivergent facial pattern; Sagittal dimension: skeletal and dental Class II, severe alveolar retrusion of the mandibular incisors, negative overjet (-11mm); transverse dimension: Class III-related bilateral crossbite with no transverse maxillary deficiency; vertical dimension: incisor overbite, increased height of the lower facial third; Teeth missing prior to treatment: 16-26...
January 7, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28071181/cd8-t-cells-mediate-the-regenerative-pth-effect-in-hpdl-cells-via-wnt10b-signaling
#7
Michael Wolf, Stefan Lossdörfer, Jana Marciniak, Piero Römer, Christian Kirschneck, Rogerio Craveiro, James Deschner, Andreas Jäger
It was the aim of the present investigation to examine whether the stimulating effect of parathyroid hormone (PTH) on human periodontal ligament (hPDL) cell proliferation and differentiation would be enhanced by hPDL/T-cell interaction involving Wnt10b signaling as a mediating pathway. hPDL cells were cultured from healthy premolar tissues of three adolescent orthodontic patients and exposed to PTH(1-34) in monocultures or co-cultures with CD8(+) T cells. At harvest, proliferation, alkaline phosphatase-specific activity (ALP), and osteocalcin production were determined by immunofluorescence cytochemistry, real-time PCR, biochemical assay, and ELISA...
November 2016: Innate Immunity
https://www.readbyqxmd.com/read/28070245/horizontally-root-fractured-teeth-with-pulpal-vitality-two-case-reports
#8
Luciano Silva, Pâmella Álvares, José Alcides Arruda, Leni Verônica Silva, Cleomar Rodrigues, Ana Paula Veras Sobral, Marcia Silveira
This case study reports the successful outcome of horizontal root fractures of two different patients, which took place in permanent incisors. Report 1 describes a case of a 29-year-old patient who suffered a mandibular trauma affecting mainly the lower central incisors, caused by a car accident. A panoramic radiograph was taken right after the accident and showed a horizontal root fracture in the middle third of tooth 42, which went untreated. Report 2 illustrates a case of a 17-year-old male patient who searched for orthodontic therapy and the periapical radiograph showed horizontal root fracture in tooth 11 caused by a previous trauma, which went untreated as well...
December 28, 2016: World Journal of Radiology
https://www.readbyqxmd.com/read/28068494/academic-orthodontic-opportunities
#9
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28068276/repositioning-of-a-pathologically-migrated-tooth-using-autologous-platelet-rich-plasma-a-case-report-with-3-year-follow-up
#10
B V Karthikeyan, Divya Khanna, M Lv Prabhuji
An intricate balance between the periodontal tissues and the forces of occlusion, tongue, and lips helps to maintain a tooth in its physiologic position within the dental arch. Disturbances in the equilibrium can cause a tooth to migrate pathologically, often requiring multidisciplinary treatment approaches. The present case demonstrates, for the first time, the use of autologous platelet-rich plasma to aid in tooth repositioning after pathologic tooth migration. A 25-year-old woman presented with extrusion and labial migration of the maxillary left central incisor, a diastema of 3 mm, and grade II mobility...
January 2017: General Dentistry
https://www.readbyqxmd.com/read/28066874/the-effect-of-a-lidocaine-prilocaine-topical-anesthetic-on-pain-and-discomfort-associated-with-orthodontic-elastomeric-separator-placement
#11
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/28062177/maxillomandibular-advancement-for-obstructive-sleep-apnea-syndrome-treatment-long-term-results
#12
Aurélie Vigneron, Renaud Tamisier, Emmanuelle Orset, Jean-Louis Pepin, Georges Bettega
PURPOSE: We evaluated the long term effectiveness of maxillomandibular advancement (MMA) for OSAS treatment patients. This retrospective study reviewed the patients treated by MMA for OSAS between 1995 and 2009. They were evaluated by complete polysomnography, cephalometry and quality of life questionnaire. The minimum follow up was 3 years. Success rate was defined by an IAH <10 with at least a 50% reduction. MATERIAL AND METHODS: 88 patients had MMA during this period...
December 7, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28061791/incidence-of-pulp-sensibility-loss-of-anterior-teeth-after-paramedian-insertion-of-orthodontic-mini-implants-in-the-anterior-maxilla
#13
Jan Hourfar, Dirk Bister, Jörg A Lisson, Björn Ludwig
BACKGROUND: The aim of this retrospective investigation was to evaluate the incidence of loss to pulp sensibility testing (PST) of maxillary front teeth after paramedian (3 to 5 mm away from the suture) orthodontic mini-implant (OMI) insertion in the anterior palate. METHODS: A total of 284 patients (102 males, 182 females; mean age was 14.4 years (±8.8) years at time of OMI-Insertion) with a total of 568 OMIs (1.7 mm diameter, length 8 mm) were retrospectively investigated...
January 6, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28061389/in-vitro-proliferation-of-periodontal-ligament-like-tissue-on-extracted-teeth
#14
T Iwata, C Mino, T Kawata
OBJECTIVE: Transplantation of autologous teeth is a routine component of orthodontic treatment. The aim of this study was to develop a method for the regeneration of damaged periodontal ligament (PDL) on extracted teeth using a three-dimensional culture system. DESIGN: We used the maxillary first premolars or third molars extracted from patients for orthodontic treatment. The extracted teeth were stained with toluidine blue to measure the residual PDL area. After confirming damage of the periodontal tissue on the root surface of the extracted teeth, we tried to regenerate the periodontal tissue...
November 30, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/28060561/aspirin-blocks-orthodontic-relapse-via-inhibition-of-cd4-t-lymphocytes
#15
Y Liu, T Zhang, C Zhang, S S Jin, R L Yang, X D Wang, N Jiang, Y H Gan, X X Kou, Y H Zhou
Immunologic response plays an important role in orthodontic tooth movement (OTM) and relapse. Nonsteroidal anti-inflammatory drugs, such as aspirin, affect immune cells and clinical orthodontic treatment. However, the mechanisms by which nonsteroidal anti-inflammatory drugs regulate immune cells to affect orthodontic relapse are unclear. In this study, male Sprague-Dawley rats were grouped as relapse and relapse + aspirin for 10 d after 14 d of OTM. Silicone impressions of the rats' maxillary dentitions were obtained to record the distance of OTM at the indicated time point...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28059576/twitter-analysis-of-the-orthodontic-patient-experience-with-braces-vs-invisalign
#16
Daniel Noll, Brendan Mahon, Bhavna Shroff, Caroline Carrico, Steven J Lindauer
OBJECTIVE: To examine the orthodontic patient experience having braces compared with Invisalign by means of a large-scale Twitter sentiment analysis. MATERIALS AND METHODS: A custom data collection program was created that collected tweets containing the words "braces" or "Invisalign" for a period of 5 months. A hierarchal Naïve Bayes sentiment analysis classifier was developed to sort the tweets into five categories: positive, negative, neutral, advertisement, or not applicable...
January 6, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28056872/a-limb-girdle-myopathy-phenotype-of-runx2-mutation-in-a-patient-with-cleidocranial-dysplasia-a-case-study-and-literature-review
#17
Sung-Ju Hsueh, Ni-Chung Lee, Shu-Hua Yang, Han-I Lin, Chin-Hsien Lin
BACKGROUND: Cleidocranial dysplasia (CCD) is a rare hereditary disorder that arises from heterozygous loss of function mutations in the runt-related transcription factor 2 (RUNX2) gene. As RUNX2 is mainly expressed in osteoblasts, CCD typically affects the skeletal and dental systems. Few studies have investigated RUNX2 mutation effects on non-skeletal systems. Here, we describe limb-girdle myopathy, an uncommon phenotype of CCD, in a patient with a heterozygous missense mutation (p.R225Q) in the RUNX2 gene...
January 6, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28054789/corticotomy-accelerated-orthodontics-a-comprehensive-review-and-update
#18
Nouf Zimmo, Muhammad H A Saleh, George A Mandelaris, Hsun-Liang Chan, Hom-Lay Wang
Of all the modalities reported to decrease orthodontic treatment time, corticotomy-accelerated orthodontics (CAO) is the only evidence-based approach. The aim of this article is to critically review the available evidence and to summarize the pros and cons of CAO. Articles published in the last 15 years related to CAO were screened and critically assessed. Based on the literature, CAO results in acceleration of the orthodontic treatment rate as much as three times on average, in addition to many benefits not commonly recognized by the profession or reported in the literature...
January 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28052207/effects-of-combined-bonded-maxillary-expansion-and-face-mask-on-dental-arch-length-in-patients-with-skeletal-class-iii-malocclusions
#19
Fatma Deniz Uzuner, Duygu Öztürk, Selin Kale Varlık
OBJECTIVE: To evaluate the effects of combined rapid maxillary expansion (RME) and face mask (FM) therapy during the mixed dentition period on the dental arch length in patients with skeletal Class III malocclusion. STUDY DESIGN: We evaluated pre- and post-treatment orthodontic models of 52 patients (25 girls, 27 boys) aged 8-12 years with skeletal Class III malocclusion(ANB<0) accompanied by maxillary transverse deficiency and retrognatism treated by bonded RME-FM therapy for a mean duration of 8 months...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28050990/swinging-replantation-a-possible-protocol-for-the-management-of-inverted-impacted-upper-central-incisor-tooth
#20
Seidu A Bello, Deborah J Enebong, Emeka V Obi
Inverted tooth impaction is a rare occurrence. Third molar impaction is the most extensively studied, and only eight cases of inverted third molars have been reported in a literature search of 40 years from 1973 to 2013. In a study, 43.4% of the premaxillary supernumeraries were inverted and 21.1% were transversely oriented, while occasional inverted central incisors have been mentioned in the literature. Severe dilaceration makes the management of this case a big challenge. The case of an 8-year-old boy with an inverted, rotated, and impacted upper left central incisor obstructed by an odontome is presented here...
January 1, 2017: Journal of Contemporary Dental Practice
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