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Amer Z Nahas, Said A Samara, Tannaz A Rastegar-Lari
The aim of this study was to evaluate the effect of low-level light therapy using light-emitting diodes (LEDs) on the speed of tooth movements that were required for the leveling and aligning of the lower anterior segment during non-extraction orthodontic treatment. The sample was comprised of patients (n = 40) with lower anterior crowding who were treated with self-ligating orthodontic brackets and a standardized wire sequence. A test group of patients (n = 20) who were treated with extraoral infrared light therapy for 20 min daily with at least 80 % compliance was compared to a control group (n = 20)...
October 20, 2016: Lasers in Medical Science
Joanna Janiszewska-Olszowska, Robert Tomkowski, Katarzyna Tandecka, Piotr Stepien, Tomasz Szatkiewicz, Katarzyna Sporniak-Tutak, Katarzyna Grocholewicz
BACKGROUND: Termination of fixed orthodontic treatment is associated with bracket debonding and residual adhesive removal. These procedures increase enamel roughness to a degree that should depend on the tool used. Enamel roughening may be associated with bacterial retention and staining. However, a very limited data exists on the alteration of 3D enamel roughness resulting from the use of different tools for orthodontic clean-up. AIMS: 1. To perform a precise assessment of 3D enamel surface roughness resulting from residual adhesive removal following orthodontic debonding molar tubes...
2016: PeerJ
Minyan Zhang, Xiaochen Tian, Jun Shi, Huxian Liu, Ning Liu, Zhengjun Cui
OBJECTIVE: This study aims to observe the efficacies of microsurgical technique combined with the Zhuang's skin soft tissue expander in treating Hunter type III congenital microtia. METHODS: Fifty-eight patients (61 ears) were enrolled from 2003 to 2012; the skin tissue expander was embedded subepidermally in the first stage via the intrahairline longitudinal incision in the postauricular mastoid area, the diseased-side rib cartilage was then taken for preparing the ear bracket in the second stage, and the tragus was surgically reconstructed in the third stage...
October 17, 2016: Annals of Plastic Surgery
W Ammari, S Harrath, S Mbarek, A Mahmoud, W Chebbi, R Messaoud, M Khairallah
OBJECTIVE: To study socio-demographic characteristics and main causes related to visual impairment (VI) as a function of age bracket and to analyze their trends over time in the district of Mahdia. METHOD: A retrospective review was performed on 1487 cases of visual impairment registered with the social authorities in Mahdia, between 1980 and 2013. The social, demographic, vision exam findings and causes were ascertained and analyzed in an SPSS database. Incidence rates of VI and blindness due to various causes were calculated based on the demographic data from the NSI to estimate the time trends using the general linear regression model and Spearman correlation...
October 13, 2016: Journal Français D'ophtalmologie
Julianne Cook Botelho, Ashley Ribera, Hans C Cooper, Hubert W Vesper
The inaccuracy of 17- βestradiol (E2) measurements affects its use as a biomarker in patient care and research. Clinical and research communities called for accurate and standardized E2 measurements. Reference Measurement Procedures (RMPs), part of the CDC Hormone Standardization Program (HoSt), are essential in addressing this need and ensuring that methods are accurate and comparable across testing systems, laboratories, and over time. A candidate RMP (cRMP) was developed for the measurement of total E2 in serum using liquid chromatography tandem mass spectrometry (LC-MS/MS) without derivatization...
October 16, 2016: Analytical Chemistry
Andreas Hellak, Jennifer Ebeling, Michael Schauseil, Steffen Stein, Matthias Roggendorf, Heike Korbmacher-Steiner
Objective. The aim of this in vitro study was to determine the shear bond strength (SBS) and adhesive remnant index (ARI) score of two self-etching no-mix adhesives (iBond™ and Scotchbond™) on different prosthetic surfaces and enamel, in comparison with the commonly used total etch system Transbond XT™. Materials and Methods. A total of 270 surfaces (1 enamel and 8 restorative surfaces, n = 30) were randomly divided into three adhesive groups. In group 1 (control) brackets were bonded with Transbond XT primer...
2016: BioMed Research International
Vincenzo Grassia, Enrica Gentile, Dario Di Stasio, Abdolreza Jamilian, Giovanni Matarese, Fabrizia D'Apuzzo, Rossella Santoro, Letizia Perillo, Rosario Serpico, Alberta Lucchese
After orthodontic treatment with fixed appliances, bonded brackets and residual adhesive must be removed. This procedure should lead to restitutio ad integrum of the enamel or, at least, restore the enamel surface as closely as possible to its pre-treatment conditions. The purpose of this study is the in vivo assessment at a microscopic resolution of enamel surfaces after bracket debonding while avoiding the tooth extraction. Nine orthodontic patients who had brackets removed at the conclusion of orthodontic treatment were enrolled...
October 13, 2016: Ultrastructural Pathology
Shaza M Hammad, Michael Knösel
BACKGROUND AND OBJECTIVE: White spot lesions (WSLs) are an undesirable side effect of fixed orthodontic appliance therapy and are reported to occur in 2-96 % of orthodontic patients. In this study, the efficacy of a new sealant to prevent WSLs during fixed orthodontic treatment was compared to a control group that did not receive sealant. PATIENTS AND METHODS: For this 2-arm parallel-group randomized trial, 50 subjects aged 12-18 years (mean age 14.57 ± 2...
October 12, 2016: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
Sandra L Gómez, Yesid Montoya, Nora L Garcia, Ana L Virgen, Javier E Botero
The aim of this study was to compare frictional resistance among conventional, passive and active selfligating brackets using Finite Elements Analysis (FEA). Seventynine (79) slide tests were performed by combining an upper first bicuspid conventional bracket, 0.018" stainless steel wires and 0.010" ligature by means of an INSTRON 3345 load system to obtain average maximum static frictional resistance (MSFR). This value was compared to the FR (frictional resistance) obtained by simulation of a slide of the same combination by FEA following conventional bracket modeling by means of Computer Aided Design (CAD)...
September 2016: Acta Odontológica Latinoamericana: AOL
Mu-Ya Chen, Felipe Lira, Hua-Qing Liang, Rui-Ting Wu, Jia-Hong Duan, Xiao-Ping Liao, José L Martínez, Ya-Hong Liu, Jian Sun
In this study we isolated 109 Enterococcus faecalis from chicken faecal samples in 6 provinces of China to investigate the prevalence and transmission mechanism of the bacitracin resistance locus bcrABDR in E. faecalis. Thirty-seven bcrABDR-positive E. faecalis were detected with 26 different PFGE clusters. The MLST of 14 positive strains belonged to ST16 and we also detected three new sequence types. S1-PFGE analysis indicated that the locus was located on plasmids presenting different sizes, with the most prevalent size being ~50 kb (13/37)...
October 12, 2016: Scientific Reports
Ezequiel Albornoz, Celeste Lucero, Genara Romero, María Paula Quiroga, Melina Rapoport, Leonor Guerriero, Patricia Andres, Cecilia Rodriguez, Marcelo Galas, Daniela Centrón, Alejandra Corso, Alejandro Petroni
This first nationwide study was conducted to analyze the prevalence of plasmid-mediated quinolone resistance (PMQR) genes in phenotypically unselected (consecutive) clinical enterobacteria. We studied 1,058 isolates that had been consecutively collected in 66 hospitals of the WHONET-Argentina Resistance Surveillance Network. Overall, 26% of isolates were nonsusceptible to at least one of the three quinolones tested (nalidixic acid, ciprofloxacin, and levofloxacin). The overall prevalence of PMQR genes was 8...
October 11, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
Gopinath Swapna, Sandeep Sharma, Vivek P Soni, Sandhya Tamgadge
BACKGROUND: Enamel demineralization is an event which is always an integral part of fixed orthodontic treatment due to which fluoride releasing bonding agents are considered to be the most effective but have lower bond strength. Thus, this in vitro study has compared the degree of demineralization and bond strength of conventional and fluoridated bonding agents. MATERIALS AND METHODS: One hundred and five extracted human premolars divided into Group I evaluated to study demineralization and Group II to evaluate bond strength...
July 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Augusto Ricardo Andrighetto, Eduardo Henrique de Leão Withers, Karlos Giovani Grando, Aldrieli Regina Ambrosio, Roberto Hideo Shimizu, Ana Cláudia Melo
BACKGROUND: Tooth bleaching is, today, one of the most widespread cosmetic treatments in dental practice,  so it is important to determine whether it can interfere with orthodontic bonding or not. AIM: The aim of this study was to assess the in vitro effects of 35% hydrogen peroxide bleaching agent on the shear bond strength of orthodontic brackets. MATERIALS AND METHODS: Forty-five upper bicuspids were divided into three groups (n = 15)...
July 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Daniela D Pompeo, Henrique D Rosário, Beatriz Mv Lopes, Paulo F Cesar, Luiz Renato Paranhos
CONTEXT: Bracket debonding is a common problem during orthodontic treatment. This type of failure is associated to masticatory forces, poor adhesion, and the need for repositioning the piece. AIMS: The objective of this work was to compare the shear bond strength of debonded brackets that were reconditioned using different protocols (alumina blasting versus hydrofluoric etching). SETTINGS AND DESIGN: This was an in vitro experimental study with 45 stainless steel orthodontic brackets...
July 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Paula Cronin, Rebecca Reeve, Patricia Mccabe, Rosalie Viney, Stephen Goodall
PURPOSE: This study investigated the relationship between children's language difficulties and health care costs using the 2004-2012 Longitudinal Study of Australian Children (LSAC). METHOD: Language difficulties were defined as scores ≤1.25SD below the standardised mean on measures of directly assessed receptive vocabulary (4-9 years) and teacher-reported language and literacy (10-13 years). Participant data were individually linked to administrative data, which were sourced from Australia's universal subsidised healthcare scheme (Medicare)...
October 7, 2016: International Journal of Speech-language Pathology
David L Valentine, G Burch Fisher, Oscar Pizarro, Carl L Kaiser, Dana Yoerger, John A Breier, Jonathan Tarn
Benthic accumulations of filamentous, mat-forming bacteria occur throughout the oceans where bisulfide mingles with oxygen or nitrate, providing key but poorly quantified linkages between elemental cycles of carbon, nitrogen and sulfur. Here we used the autonomous underwater vehicle Sentry to conduct a contiguous, 12.5 km photoimaging survey of sea-floor colonies of filamentous bacteria between 80 and 579 m water depth, spanning the continental shelf to the deep suboxic waters of the Santa Barbara Basin (SBB)...
October 6, 2016: Environmental Science & Technology
Zheng Zhu, Yanqing Xie, Weijie Guan, Yi Gao, Shu Xia, Nanshan Zhong, Jinping Zheng
Allergic rhinitis (AR) is a risk factor for asthma development. The value of fractional exhaled nitric oxide (FeNO) in detecting lower airway involvement in the progress of AR-asthma march has not been evaluated. The aim of the present study was to investigate the value of FeNO in assessing lower airway inflammation and predicting bronchial hyperresponsiveness (BHR) in AR with or without asthma. FeNO and eosinophil count in induced sputum, and a methacholine bronchial provocation test were performed in 93 subjects, including: 45 AR patients (AR group); 20 patients with AR and asthma (AR with asthma group); and 28 normal controls (control group)...
October 2016: Experimental and Therapeutic Medicine
Camila A Pazzini, Luciano J Pereira, Ana P Peconick, Leandro S Marques, Saul M Paiva
The aim of this study was to assess periodontal status and blood parameters in orthodontic patients with nickel allergy one month after removal of brackets. Ninety-six randomly selected patients were initially evaluated. Allergy to nickel was diagnosed using a patch test. After determining the prevalence of subjects allergic to nickel, two groups were formed: 16 allergic (experimental) and 16 non-allergic (control) patients. Their periodontal status was determined regularly by a single, blinded, duly calibrated examiner using the Löe Index (GI) and their blood was tested (complete blood test, including nickel and IgE levels) after nine months of orthodontic treatment and again one month after removing the orthodontic appliances...
April 2016: Acta Odontológica Latinoamericana: AOL
Toru Inami, Yuko Nakano, Ken Miyazawa, Masako Tabuchi, Shigemi Goto
To achieve optimum occlusal and facial results in a patient with high-angle maxillary protrusion, it is important to move Point A back with retraction of the anterior teeth and prevent clockwise rotation of the mandible through good vertical control. A woman, aged 42 years 5 months, with a protrusive profile sought lingual orthodontic treatment. She had a skeletal Class II high-angle pattern with maxillary protrusion and mandibular retrusion. The extraction of the 4 first premolars was indicated to correct the problems...
October 2016: American Journal of Orthodontics and Dentofacial Orthopedics
Bangalore H Durgesh, Saleh Alhijji, Mohamed I Hashem, AbdulAziz A Al Kheraif, Pavithra Durgesh, Mohamed Elsharawy, Pekka K Vallittu
BACKGROUND: Adhesive resin composite, which is used to bond orthodontic bracket to tooth surface is exposed to the influence of wear by tooth brushing and wear may influence loosening of the bracket. OBJECTIVE: The aim of this study was to evaluate in vitro the effect of tooth brushing on the adhesion strength of orthodontic brackets bonded to surface treated porcelain. METHOD: A total of 90 glazed porcelain fused to metal facets (PFM) were randomly assigned into 3 groups according to the surface treatment to be received...
September 28, 2016: Bio-medical Materials and Engineering
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