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Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie

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https://read.qxmd.com/read/30758513/comparison-of-force-loss-due-to-friction-of-different-wire-sizes-and-materials-in-conventional-and-new-self-ligating-orthodontic-brackets-during-simulated-canine-retraction
#1
Tarek El-Bialy, Ahmad Alobeid, Cornelius Dirk, Andreas Jäger, Ludger Keilig, Christoph Bourauel
AIMS: The aim of this study was to compare force loss due to friction (Fr) during simulated canine retraction using different archwire dimensions and materials between conventional and new self-ligating brackets. METHODS: The tested brackets were (1) conventional brackets (Victory series, GAC twin and FLI twin), (2) self-ligating brackets (Damon-Q, FLI-SL, new/improved FLI-SL (I FLI-SL), SPEED, GAC innovation (R) and Ortho Classic) and (3) a low-friction bracket (Synergy)...
February 13, 2019: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30673806/scanning-electron-microscopy-analysis-of-aligner-fitting-on-anchorage-attachments
#2
Edoardo Mantovani, Enrico Castroflorio, Gabriele Rossini, Francesco Garino, Giovanni Cugliari, Andrea Deregibus, Tommaso Castroflorio
PURPOSE: The aims of the study were (1) to evaluate the fitting of three different aligners (Invisalign [Align Technology, Santa Clara, CA, USA], CA Clear Aligner [Scheu-Dental, Iserlohn, Germany] and F22 [Sweden&Martina, Due Carrare, Italy]) on anchorage attachments using scanning electron microscopy (SEM), and (2) to analyze the influence of 2 different types of resin used to build attachments on aligner fitting. METHODS: Using STL files of a patient, six resin casts were obtained and rectangular attachments were bonded on them...
January 23, 2019: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30610250/mechanical-properties-of-multi-force-vs-conventional-niti-archwires
#3
Luca Lombardo, Marianna Ceci, Francesco Mollica, Valentina Mazzanti, Mario Palone, Giuseppe Siciliani
AIMS: Mechanical properties along the length of latest generation "multi-force" archwires were measured and compare with commercially available thermally activated and non-thermally activated nickel-titanium (NiTi) archwires. MATERIALS AND METHODS: A modified deflection test was used to produce load/deflection curves for different positions along the lengths of a sample of 114 NiTi archwires composed by thermal NiTi, non-thermal NiTi, two types of multi-force NiTi and one type of multi-force copper archwires of various cross-sections (0...
January 4, 2019: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30607434/premaxillary-maxillary-suture-development-in-the-first-trimester-an-ultrasound-study
#4
Wen-Hua Ruan, Wu-Qun Han, Mei-Li Huang, Kei-Li Huang, Ling-Ling Jin
PURPOSE: Our study was designed to investigate premaxillary-maxillary suture growth in fetuses from the first trimester of pregnancy using the B‑ultrasound technique in order to determine the suture fusion time. METHODS: We selected 169 healthy Han singleton pregnancies as subjects. All subjects received routine pregnancy tests and were divided into three groups based on the gestational age of the fetus: group 1, the 11th gestational week; group 2, the 12th gestational week; and group 3, the 13th gestational week...
January 3, 2019: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30535568/comparison-of-intraoral-biofilm-reduction-on-silver-coated-and-silver-ion-implanted-stainless-steel-bracket-material-biofilm-reduction-on-silver-ion-implanted-bracket-material
#5
Viktoria Meyer-Kobbe, Katharina Doll, Meike Stiesch, Rainer Schwestka-Polly, Anton Demling
PURPOSE: The objective of this in situ study was to quantify the intraoral biofilm reduction on bracket material as a result of different surface modifications using silver ions. In addition to galvanic silver coating and physical vapor deposition (PVD), the plasma immersion ion implantation and deposition (PIIID) procedure was investigated for the first time within an orthodontic application. MATERIALS AND METHODS: An occlusal splint equipped with differently silver-modified test specimens based on stainless steel bracket material was prepared for a total of 12 periodontally healthy patients and was worn in the mouth for 48 h...
December 10, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30649578/mitteilungen-dgkfo
#6
(no author information available yet)
No abstract text is available yet for this article.
January 2019: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30413832/sagittal-skeletal-correction-using-symphyseal-miniplate-anchorage-systems-success-rates-and-complications
#7
Seçil Çubuk, Burçak Kaya, Zahire Şahinoğlu, Ufuk Ateş, Ayça Arman Özçırpıcı, Sina Uçkan
OBJECTIVES: Aim of this study is to evaluate success rates and complications related with symphyseal miniplate anchorage systems used for treatment of Class 2 and Class 3 deformities. METHODS: A total of 58 miniplates applied to 29 growing patients were evaluated. The first group comprised 24 symphyseal miniplates applied to 12 patients and Forsus Fatigue Resistant Devices were attached to the head of the miniplates for mandibular advancement. The second group consisted of 34 symphyseal miniplates applied to 17 patients and intermaxillary elastics were applied between acrylic appliances placed on the maxillary dental arch and the symphyseal miniplates for maxillary protraction...
November 9, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30374730/mitteilungen-dgkfo
#8
(no author information available yet)
No abstract text is available yet for this article.
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30255320/landmark-based-midsagittal-plane-analysis-in-patients-with-facial-symmetry-and-asymmetry-based-on-cbct-analysis-tomography
#9
Adrienn Dobai, Zsolt Markella, Tamás Vízkelety, Christian Fouquet, Adrienne Rosta, József Barabás
PURPOSE: Reconstruction of the facial midplane is relevant in anthropometry, orthodontics, maxillofacial surgery, and the accurate measurement of symmetry deviation is relevant in many fields of medicine especially when planning surgical treatment. In the literature, three different means of midplane generation have been published; however, there is currently no consensus regarding the approach to use. Morphometric methods are used to determine the true midsagittal plane (MSP), but its use in clinical practice is difficult...
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30232505/facial-growth-direction-after-surgical-intervention-to-relieve-mouth-breathing-a-systematic-review-and-meta-analysis
#10
REVIEW
Rizomar Ramos do Nascimento, Daniele Masterson, Claudia Trindade Mattos, Oswaldo de Vasconcellos Vilella
OBJECTIVES: A systematic review was performed to assess the prognosis for facial growth direction documented by mandibular plane inclination and anterior face height in growing subjects who had undergone surgical intervention to relieve mouth breathing (PROSPERO database, registration no. CRD 42013005707). METHODS: PubMed, Scopus, Web of Science, the Cochrane Library and LILACS were searched based on the guidelines of the PRISMA statement. Included were longitudinal studies with mouth-breathing patients who had undergone surgical interventions to relieve their respiratory pattern, with a minimum follow-up of one year...
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30203326/are-morphologic-and-topographic-alterations-of-the-mandibular-fossa-after-fixed-functional-treatment-detectable-on-tomograms-visual-classification-and-morphometric-analysis
#11
Gero Stefan Michael Kinzinger, Jörg Alexander Lisson, Dania Booth, Jan Hourfar
AIM: The goal was to evaluate if changes in morphology and topography of the mandibular fossa after Functional Mandibular Advancer (FMA) treatment are detectable on tomograms. Furthermore, the suitability of digital tomograms (DT) over magnetic resonance imaging (MRI) for this particular question was investigated. MATERIALS AND METHODS: In all, 25 patients (14 female, 11 male) with a skeletal class II malocclusion received treatment with a FMA. DTs were available prior to (T1) and after (T2) FMA treatment...
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30187082/influence-of-physician-evaluation-portals-on-orthodontist-selection-by-patients
#12
Stephan Christian Möhlhenrich, Matthias Wurbs, Ali Modabber, Michael Wolf, Frank Huber, Ulrike Fritz
OBJECTIVE: This survey aimed to determine the influence of physician evaluation portals (PEP) on a patient's choice of physicians, particularly orthodontists. MATERIALS AND METHODS: Questionnaires were used to collect sociodemographic data, reasons for orthodontist selection, type of Internet use, as well as information on the knowledge, use and evaluation of 14 popular PEPs. A total of 506 questionnaires were evaluated, and a descriptive statistical evaluation was conducted using the χ2 test...
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30187081/kinematic-posture-analysis-of-orthodontists-in-their-daily-working-practice
#13
I Hauck, C Erbe, J Nowak, I Hermanns, D Ditchen, R Ellegast, G Oremek, D A Groneberg, D Ohlendorf
PURPOSE: The aim of this study is to conduct a kinematic analysis of occupational posture in orthodontists. METHODS: A representative sample of 21 (13 female/8 male) residents in orthodontics and orthodontists was studied. The CUELA system collects kinematic data of the occupational posture. Alongside the kinematic analysis, the tasks performed on-site were also subject to a detailed computerized analysis. Data analysis comprised the evaluation and comparison of joint angle distribution in accordance with ergonomic standards categorized as neutral, moderate or awkward posture...
November 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30306188/effect-of-arch-wire-size-on-orthodontic-reverse-closing-loop-and-retraction-force-in-canine-tooth-distalization-three-dimensional-finite-element-analysis
#14
Suleyman Kutalmış Buyuk, Mehmet Sami Guler, Muhammed Latif Bekci
AIM: The purpose of this study is to compare the effects of different wire size reverse closing loop and retraction forces in canine tooth distalization using the finite element analysis method. MATERIALS AND METHODS: Maxillary alveolar bone, maxillary first molar, second premolar and canine teeth were constructed in three dimensions along with their periodontal ligaments and standard edgewise brackets of 0.022 inch and stainless-steel reverse closing loop of 0...
October 10, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30242441/prevalence-of-gingival-recession-after-orthodontic-treatment-of-infraversion-and-open-bite
#15
Juan-Juan Ji, Xu-Dong Li, Qun Fan, Xiao-Jun Liu, Shuang Yao, Zhi Zhou, Shuang Yang, Yong Shen
PURPOSE: Aim of the present study was to investigate the prevalence of gingival recession and related factors in teeth with low occlusal function (open bite and infraversion) after orthodontic treatment. METHODS: From January 2014 to December 2017, 403 patients received orthodontic treatment. Their gingival recession and related factors before and after treatment were retrospectively analyzed. RESULTS: The prevalence of gingival recession in patients with infraversion and open bite after orthodontic treatment were 80...
September 21, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30209536/facial-perception-of-infants-with-cleft-lip-and-palate-with-without-the-nam-appliance
#16
A Quast, J Waschkau, J Saptschak, N Daratsianos, K Jordan, P Fromberger, J L Müller, P Meyer-Marcotty
OBJECTIVE: This study aimed to assess adults' subjective perception of infants with a unilateral cleft lip and palate (UCLP) with and without a nasoalveolar molding (NAM) appliance compared to those of controls concerning (1) adult gaze patterns and (2) emotional valence. METHODS: This interdisciplinary study was performed by (1) the Department of Orthodontics and (2) the Department for Psychiatry and Psychotherapy, University Medical Center Goettingen, using eye tracking and a 10-point Likert scale questionnaire...
September 12, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30136083/mitteilungen-dgkfo
#17
(no author information available yet)
No abstract text is available yet for this article.
September 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30066016/effects-of-reducing-light-curing-time-of-a-high-power-led-device-on-shear-bond-strength-of-brackets
#18
Layene Figueiredo Almeida, Lidia Parsekian Martins, Renato Parsekian Martins
PURPOSE: To assess the effects of reducing the curing time of a high-power light-emitting diode (LED) unit (Valo, Ultradent, South Jordan, UT, USA) on shear bond strength (SBS) of metal brackets and on the amount of adhesive remnant of two orthodontic composites. METHODS: Eighty human premolars were divided into four groups (G1-4) according to curing time and composite: G1 (Transbond XT, 6 s), G2 (Opal Bond MV, 6 s), G3 (Transbond XT, 3 s), and G4 (Opal Bond MV, 3 s)...
September 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30019109/expression-kinetics-of-human-periodontal-ligament-fibroblasts-in-the-early-phases-of-orthodontic-tooth-movement
#19
Agnes Schröder, Kathrin Bauer, Gerrit Spanier, Peter Proff, Michael Wolf, Christian Kirschneck
PURPOSE: Human periodontal ligament (hPDL) fibroblasts play a crucial mediating role in orthodontic tooth movement (OTM). In this study, we investigated the expression kinetics of genes associated with OTM in its early phase to obtain better insight into the timing and regulation of molecular and cellular signalling and transformation processes occurring in compressive areas of the periodontal ligament during OTM. METHODS: Adherent hPDL fibroblasts were stimulated with physiological orthodontic compressive forces of 2 g/cm2 for 24, 48, 72, and 96 h under cell culture conditions...
September 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://read.qxmd.com/read/30014179/biomechanical-properties-of-cad-cam-individualized-nickel-titanium-lingual-retainers-an-in-vitro-study
#20
Stephan Christian Möhlhenrich, Fabian Jäger, Andreas Jäger, Pascal Schumacher, Michael Wolf, Ulrike Fritz, Christoph Bourauel
PURPOSE: This study aimed to determine and compare the mechanical properties of novel CAD/CAM(computer-aided design/manufacturing)-individualized nickel-titanium (NiTi) and conventional twisted wires. METHODS: Seven NiTi wires (angular, 0.20 × 0.20 mm up to 0.50 × 0.50 mm) and two twisted steel wires (round, 0.40 mm and 0.44 mm) were investigated in three-point (3PBT) and four-point bending tests (4PBT) using the Orthodontic Measurement and Simulation System...
September 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
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