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Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie

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https://www.readbyqxmd.com/read/28409195/stability-of-anterior-tooth-alignment-10%C3%A2-years-out-of-retention
#1
Ragnar Bjering, Leiv Sandvik, Marit Midtbø, Vaska Vandevska-Radunovic
OBJECTIVE: Long-term posttreatment stability of anterior tooth alignment is of major interest to both patients and orthodontists. In the present study we examined the long-term outcome 10 years postretention and investigated the possible influence of treatment-related factors on posttreatment stability of maxillary and mandibular anterior tooth alignment. METHODS: The sample comprised 51 patients treated with full fixed appliances in a university clinic. Average retention time was 1...
April 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28405732/determination-of-forces-on-a-split-palatal-screw-after-rapid-maxillary-expansion
#2
Valentin Javier García, Rubén López-Cancelos, Antonio Riveiro, Rafael Comesaña, Josep Maria Ustrell I Torrent, Khaled Kasem, Aida Badaoui, Mª Cristina Manzanares-Céspedes, Patricia Carvalho-Lobato
OBJECTIVES: Aim of this study was to develop a finite element model of the forces that patients with rapid maxillary expansion bear and to validate it by a mechanical test. METHODS: Computer-aided design models of the metallic screw and polymeric splint were modelled and discretized. Two forces were generated and considered independently: F1 at the temporary molar (2.5 N) and F2 at the permanent molar (2.5 N). The results of the finite element analysis were used to define the strain values which the anterior and posterior arms of the rapid maxillary expansion appliance bore as a linear function of F1-F2 by calculating the strain-force coefficient δ ij ...
April 12, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28397083/cephalometric-and-dental-arch-changes-to-haas-type-rapid-maxillary-expander-anchored-to-deciduous-vs-permanent-molars-a-multicenter-randomized-controlled-trial
#3
Carmen Cerruto, Alessandro Ugolini, Luca Di Vece, Tiziana Doldo, Alberto Caprioglio, Armando Silvestrini-Biavati
OBJECTIVE: To assess radiographic changes and dental arch changes with Haas-type rapid maxillary expansion (H-RME) anchored to deciduous versus permanent molars in children with unilateral posterior crossbite. METHODS: In all, 70 patients with unilateral posterior crossbite were randomly allocated to group GrE (H-RME on second deciduous molars) or Gr6 (H-RME on first permanent molars) and compared between T0 (before treatment) and T1 (at the RME removal; i.e., 10 months after the end of the activation of the screw)...
April 10, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28397082/treatment-effects-of-various-prescriptions-and-techniques-for-fixed-orthodontic-appliances-a-systematic-review
#4
Sophia Mousoulea, Spyridon N Papageorgiou, Theodore Eliades
PURPOSE: Although several prescriptions and techniques exist for comprehensive fixed appliance treatment, their treatment effects have not yet been adequately assessed in an evidence-based manner. The aim of this systematic review was to assess the therapeutic and adverse effects of various prescriptions or techniques for orthodontic appliances from randomized clinical trials on human patients. METHODS: Eight databases were searched up to July 2016 for randomized trials assessing any orthodontic prescriptions or techniques in human patients...
April 10, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28361165/accuracy-of-stereolithographically-printed-digital-models-compared-to-plaster-models
#5
Leonardo Tavares Camardella, Oswaldo V Vilella, Marleen M van Hezel, Karel H Breuning
OBJECTIVE: This study compared the accuracy of plaster models from alginate impressions and printed models from intraoral scanning. MATERIALS AND METHODS: A total of 28 volunteers were selected and alginate impressions and intraoral scans were used to make plaster models and digital models of their dentition, respectively. The digital models were printed using a stereolithographic (SLA) 3D printer with a horseshoe-shaped design. Two calibrated examiners measured distances on the plaster and printed models with a digital caliper...
March 30, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28357471/mechanical-load-exerted-by-pet-g-aligners-during-mesial-and-distal-derotation-of-a-mandibular-canine-an-in-vitro-study
#6
F Elkholy, B Mikhaiel, F Schmidt, B G Lapatki
INTRODUCTION: The six force-moment (F/M) components exerted by aligners of different thickness during simulated mesiorotation and distorotation of a mandibular canine were studied. MATERIALS AND METHODS: An acrylic mandibular model with a separated right canine mounted on a hexapod via a 3D F/M sensor was used. Duran+(®) aligners (Scheu Dental, Germany) of thickness 0.5, 0.625, and 0.75 mm were fabricated on plaster models with the measurement tooth in its neutral position...
March 29, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28341880/long-term-skeletal-and-dental-effects-of-facemask-versus-chincup-treatment-in-class-iii-patients-a-retrospective-study
#7
B Wendl, M Stampfl, A P Muchitsch, H Droschl, H Winsauer, A Walter, M Wendl, T Wendl
OBJECTIVES: To investigate the skeletal and dental changes during chincup versus facemask treatment, to compare the long-term effects of the two appliances, and to document the impact of each on treatment success. METHODS: In all, 61 patients with Class III syndrome were retrospectively analyzed at three examination times: 7.8 ± 1.7 years of age (T0, pretreatment), 9.6 ± 2.4 years of age (T1, posttreatment), and around 15-20 years later (T2, long-term follow-up)...
March 24, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28321457/influence-of-piezotomy-and-osteoperforation-of-the-alveolar-process-on-the-rate-of-orthodontic-tooth-movement-a-systematic-review
#8
Stefan Hoffmann, Nikolaos Papadopoulos, Dominik Visel, Theresa Visel, Paul-Georg Jost-Brinkmann, Thomas Michael Präger
OBJECTIVE: The minimally invasive procedures piezosurgical corticocision and osteoperforation have been advocated as methods to accelerate orthodontic tooth movement and to shorten treatment time, but without large-scale trauma of the periosteum and the bone. The aim of this study was to evaluate if there is evidence supporting these claims based on a systematic review of the literature. MATERIALS AND METHODS: A search of PubMed and Google Scholar with the combined search terms "piezo*" and "tooth movement" was performed until May 2016...
March 20, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28289759/thermal-imaging-of-the-pulp-during-residual-adhesive-removal
#9
Gökmen Kurt, Nisa Gül, Özgür Er, Gülşen Çakmak, Emre Bendeş, Veysel Aslantaş
OBJECTIVE: The aim of this study was to evaluate the temperature changes of the pulpal area during different adhesive clean-up procedures. MATERIALS AND METHODS: A total of 80 freshly extracted adult maxillary premolar teeth were divided into four groups. Adhesive clean-up was performed with 6- and 12-fluted tungsten carbide burs (TCB) using low- and high-speed handpieces with air or water cooling after bracket debonding. The temperature changes and cool down times were evaluated with a thermal camera...
March 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28289758/changes-in-university-orthodontic-care-over-a-period-of-20%C3%A2-years-patient-characteristics-treatment-quality-and-treatment-costs
#10
Julia von Bremen, Eva Maria Streckbein, Sabine Ruf
AIM: The aim of the present study was to analyze whether there were changes in the severity of malocclusions of patients treated at the Department of Orthodontics, University of Giessen, Germany over a period of 20 years (1992-2012) and if the implementation of the KIG system (German index of treatment need) in 2001 had any effect on the patient cohort. Furthermore, the study aimed to analyze the influence of the severity of malocclusion on treatment quality and economic efficiency (relation payment per case/treatment effort)...
March 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28224175/differences-between-active-and-passive-self-ligating-brackets-for-orthodontic-treatment-systematic-review-and-meta-analysis-based-on-randomized-clinical-trials
#11
Xianrui Yang, Yiruo He, Tian Chen, Mengyuan Zhao, Yinqiu Yan, Hongzhe Wang, Ding Bai
PURPOSE: In orthodontic treatment, the effects of differences in the design between active and passive self-ligating bracket (ASLB and PSLB, respectively) are usually neglected. This study investigated differences in effectiveness and efficiency between ASLBs and PSLBs. METHODS: To identify randomized, controlled clinical trials (RCTs) comparing ASLB with PSLB, the electronic databases Medline, Embase, Cochrane Central Register of Controlled Trials, Chinese Biomedical Literature Database, China National Knowledge Infrastructure, and Chinese Medical Journal Database were searched without language or time limits...
February 21, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28220183/quantitative-light-induced-fluorescence-images-and-digital-photographs-reproducibility-of-manually-marked-demineralisations
#12
Rosalia Tatano, Eva E Ehrlich, Benjamin Berkels, Ekaterina Sirazitdinova, Thomas M Deserno, Ulrike B Fritz
OBJECTIVE: Hard tooth tissue demineralisation is an undesirable side effect of orthodontic treatment with fixed appliances. Whereas both clinically and in digital photographs (DP), demineralisations appear as white spot lesions, WSLs appear as dark areas when quantitative light-induced fluorescence (QLF) imaging is used. This study aims at comparing the reproducibility of the detection of decalcified tooth areas in DP and QLF. MATERIALS AND METHODS: DP and QLF pairs were acquired from 139 teeth of 32 patients after braces removal...
February 20, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28220182/retrospective-25-year-follow-up-of-treatment-outcomes-in-angle-class-iii-patients-early-versus-late-treatment
#13
B Wendl, A P Muchitsch, H Winsauer, A Walter, H Droschl, N Jakse, M Wendl, T Wendl
OBJECTIVES: To assess early versus late treatment of Class III syndrome for skeletal and dental differences. METHODS: Thirty-eight Class III patients treated with a chincup were retrospectively analyzed. Baseline data were obtained by reviewing pretreatment (T0) anamnestic records, cephalograms, and casts. The cases were assigned to an early or a late treatment group based on age at T0 (up to 9 years or older than 9 years but before the pubertal growth spurt)...
February 20, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28204849/effects-of-impacted-maxillary-canines-on-root-resorption-of-lateral-incisors-a-cone-beam-computed-tomography-study
#14
Faruk I Ucar, Ahmet A Celebi, Enes Tan, Tolga Topcuoğlu, Ahmet Ercan Sekerci
OBJECTIVES: The aim of this study was to analyze the amount of root resorption of maxillary lateral incisors by relating the position, location, and angulation of the impacted canine using cone-beam computed tomography (CBCT). MATERIALS AND METHODS: The study sample consisted of panoramic and CBCT radiographs of 46 patients with a unilateral impacted canine (16 males and 30 females; mean age: 19.53 ± 6.66 and 19.44 ± 5.77 years, respectively). Sector location and canine angulation were measured in panoramics...
February 15, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28204848/nonsyndromic-oligodontia-does-the-tooth-agenesis-code-tac-enable-prediction-of-the-causative-mutation
#15
Niko C Bock, Sarah Lenz, Gisela Ruiz-Heiland, Sabine Ruf
OBJECTIVES: The literature suggests an association between phenotype and causative mutation in nonsyndromic oligodontia. Thus, the present study was designed to verify this hypothesis in a consecutive cohort of patients. METHODS: All patients with nonsyndromic oligodontia who had been treated at the study center (Department of Orthodontics, University of Giessen, Germany) over the period 1986-2013 were contacted. Candidates were included only if at least one more family member had hypo- or oligodontia (i...
February 15, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28130564/histologic-and-histomorphometric-evaluation-of-bone-regeneration-using-nanocrystalline-hydroxyapatite-and-human-freeze-dried-bone-graft-an-experimental-study-in-rabbit
#16
Rokhsareh Sadeghi, Mohammad Najafi, Hassan Semyari, Fatemeh Mashhadiabbas
PURPOSE: Bone regeneration is an important concern in periodontal treatment and implant dentistry. Different biomaterials and surgical techniques have been used for this purpose. The aim of the present study was to compare the effect of nanocrystalline hydroxyapatite and human freeze-dried bone graft (FDBG) in regeneration of rabbit calvarium bony defects by histologic and histomorphometric evaluation. METHODS: In this experimental study, three similar defects, measuring 8 mm in diameter, were created in the calvaria of 16 white New Zealand rabbits...
January 27, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28275843/mitteilungen-der-deutschen-gesellschaft-f%C3%A3-r-kieferorthop%C3%A3-die
#17
(no author information available yet)
No abstract text is available yet for this article.
March 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28204847/retrospective-25-year-follow-up-of-treatment-outcomes-in-angle-class-iii-patients-success-versus-failure
#18
Brigitte Wendl, A Kamenica, H Droschl, N Jakse, F Weiland, T Wendl, M Wendl
OBJECTIVES: Despite recommendations for early treatment of hereditary Angle Class III syndrome, late pubertal growth may cause a relapse requiring surgical intervention. This study was performed to identify predictors of successful Class III treatment. MATERIALS AND METHODS: Thirty-eight Class III patients treated with a chincup were retrospectively analyzed. Data were collected from the data archive, cephalograms, and casts, including pretreatment (T0) and posttreatment (T1) data, as well as long-term follow-up data collected approximately 25 years after treatment (T2)...
March 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28091721/influence-of-tooth-dimension-on-the-initial-mobility-based-on-plaster-casts-and-x-ray-images-a-numerical-study
#19
Martin Hartmann, Cornelius Dirk, Susanne Reimann, Ludger Keilig, Anna Konermann, Andreas Jäger, Christoph Bourauel
AIMS: The goal was to determine the influence of different geometric parameters of the tooth on the initial tooth mobility and the position of the center of resistance employing numerical models based on scaled X-ray images and plaster casts. METHODS: The dimensions of tooth 21 were measured in 21 patients, using radiographs and dental casts. Length and mesiodistal width of the tooth were obtained from the X-ray image and the orovestibular diameter from the plaster cast...
January 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28084515/soft-tissue-effects-of-three-different-class-ii-1-camouflage-treatment-strategies
#20
Ezgi Atik, Bengisu Akarsu-Guven, Ilken Kocadereli
OBJECTIVE: Aim of this retrospective study was to compare soft tissue effects of Class II treatments with the forsus fatigue resistant device (FRD), the pendulum appliance, and the extraction of two maxillary premolars, all of which were combined with pre-adjusted fixed appliances. PATIENTS AND METHODS: The sample of 54 patients with Class II malocclusions was divided in three groups: group I patients (mean age = 15.91 years) were treated with the FRD concurrently used with fixed appliances; group II patients (mean age = 16...
January 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
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