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Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie

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https://www.readbyqxmd.com/read/28733810/precision-of-guided-scanning-procedures-for-full-arch-digital-impressions-in-vivo
#1
Moritz Zimmermann, Christina Koller, Moritz Rumetsch, Andreas Ender, Albert Mehl
PURPOSE: System-specific scanning strategies have been shown to influence the accuracy of full-arch digital impressions. Special guided scanning procedures have been implemented for specific intraoral scanning systems with special regard to the digital orthodontic workflow. The aim of this study was to evaluate the precision of guided scanning procedures compared to conventional impression techniques in vivo. METHOD: Two intraoral scanning systems with implemented full-arch guided scanning procedures (Cerec Omnicam Ortho; Ormco Lythos) were included along with one conventional impression technique with irreversible hydrocolloid material (alginate)...
July 21, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28667433/craniofacial-features-affecting-mandibular-asymmetries-in-skeletal-class-ii-patients
#2
Guilherme Thiesen, B F Gribel, M P M Freitas, D R Oliver, K B Kim
OBJECTIVES: The aim of this study was to evaluate the characteristics affecting different intensities of mandibular asymmetry in skeletal Class II adults using three-dimensional images. This study is clinically relevant since it allows professionals to evaluate the morphological components related to these deformities and more carefully obtain correct diagnosis and treatment plan for such patients. METHODS: Cone-beam computed tomography data of 120 Class II patients (40 with relative symmetry, 40 with moderate asymmetry, and 40 with severe asymmetry) were imported to SimPlant Ortho Pro(®) 2...
June 30, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28660422/effect-of-orthognathic-surgery-on-profile-esthetics-in-class-ii-1-malocclusions
#3
Katharina Klaus, Christian Heumann, Sabine Ruf
OBJECTIVES: To measure the effect of orthognathic surgery on Class II:1 profile silhouette esthetics and to identify pretreatment parameters and thresholds for consistent esthetic improvement. METHODS: Pre- and posttreatment black profile silhouettes of 20 patients with Class II:1 malocclusion who had received combined orthodontic/orthognathic treatment were evaluated retrospectively by 20 European orthodontists and laypeople each using a visual analogue scale (VAS)...
June 28, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28660421/incidence-and-severity-of-gingival-invaginations-associated-with-early-versus-late-initiation-of-orthodontic-space-closure-after-tooth-extraction-a-multicenter-pilot-and-randomized-controlled-trial
#4
Christoph Reichert, Eric Kutschera, Christina Plötz, Sven Scharf, Lina Gölz, Rolf Fimmers, Christine Fuhrmann, Gerhard Wahl, Bert Braumann, Andreas Jäger
OBJECTIVE: Gingival invaginations are a common side effect of orthodontic extraction-space closure. The timing of initiating the closure of an extraction space varies greatly in clinical practice. In this multicenter pilot and randomized controlled trial, we prospectively investigated whether initiating space closure in the early stage of wound healing would benefit the incidence and severity of invaginations developing in the extraction sites. METHODS: A total of 368 patients were screened for indications to extract at least one mandibular premolar...
June 28, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28660420/effects-of-combined-orthodontic-orthognathic-treatment-for-class-ii-and-iii-correction-on-posterior-airway-space-comparison-of-mono-and-bignathic-osteotomies
#5
Jan Hourfar, Gero Stefan Michael Kinzinger, Hartmut Feifel, Verena Maria Vehr, Jörg Alexander Lisson
OBJECTIVES: Comparison of treatment effects on the posterior airway space (PAS) in patients treated with combined orthodontic-orthognathic surgical treatment. METHODS: Pre- and postsurgical lateral cephalograms of 53 (34 females, 19 males) Caucasian patients were analyzed using a customized set of measurements. According to malocclusion (Class II or III) and surgical approach (either monognathic or bignathic), patients were allocated into four groups. PAS was assessed from cranial to caudal at six levels (P1-P6)...
June 28, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28702831/mitteilungen-der-dgkfo
#6
(no author information available yet)
No abstract text is available yet for this article.
July 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28488080/comparison-of-two-treatment-strategies-for-the-early-treatment-of-an-anterior-skeletal-open-bite-posterior-bite-block-vertical-pull-chin-cup-pbb-vpc-vs-posterior-bite-block-high-pull-headgear-pbb-hph
#7
Hakan Turkkahraman, Ebru Cetin
PURPOSE: Aim of the present study was to compare the effects of posterior bite block-vertical pull chin cup (PBB-VPC) and posterior bite block-high pull headgear (PBB-HPH) in the early treatment of anterior open bite. METHODS: This retrospective study was carried out using pretreatment (T1) and posttreatment (T2) lateral cephalometric radiographs of 28 patients treated with either PBB-VPC or PBB-HPH and 14 age-matched control patients with anterior open bite. The treatment changes were evaluated with 20 measurements (7 angular and 13 linear)...
July 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28455746/cephalometric-changes-in-growing-patients-with-increased-vertical-dimension-treated-with-cervical-headgear
#8
Sergio Sambataro, Rosamaria Fastuca, Nelson J Oppermann, Paola Lorusso, Tiziano Baccetti, Lorenzo Franchi, Alberto Caprioglio
PURPOSE: The aim of the present study was to investigate the cephalometric changes in patients with increased vertical dimension after treatment with cervical headgear compared to controls. METHODS: The sample of the present retrospective study consisted of 20 Class II patients (10 males, 10 females; mean age 8.54 ± 1.15 years) with increased vertical dimension treated with cervical headgear (treatment group) and 21 Class II patients (11 males, 10 females; mean age 8...
July 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28409195/stability-of-anterior-tooth-alignment-10%C3%A2-years-out-of-retention
#9
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...
July 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
#10
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...
July 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28289759/thermal-imaging-of-the-pulp-during-residual-adhesive-removal
#11
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...
July 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
#12
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)...
July 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
#13
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...
July 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28500475/mitteilungen-der-dgkfo
#14
(no author information available yet)
No abstract text is available yet for this article.
May 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
#15
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)...
May 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28451737/effects-of-malocclusions-on-facial-attractiveness-and-their-correlations-with-the-divine-proportion
#16
Seden Akan, Ayse Gul Torgut, Hüsamettin Oktay
PURPOSE: The aim of this study was to evaluate the effects of malocclusions on facial attractiveness and to determine if it was correlated with the divine proportion. METHODS: Standard frontal facial photos were taken from 335 subjects in natural head position. Facial attractiveness of the subjects was evaluated by 10 dental students using a 10-point visual analog scale (VAS). All of the evaluations were arranged in order, and 30 attractive subjects with the highest score and 30 nonattractive subjects having the lowest score were chosen...
April 27, 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
#17
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
#18
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
#19
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
#20
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
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