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Angle Orthodontist

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https://www.readbyqxmd.com/read/28206811/types-of-tooth-movement-bodily-or-tipping-do-not-affect-the-displacement-of-the-tooth-s-center-of-resistance-but-do-affect-the-alveolar-bone-resorption
#1
Takanobu Kondo, Hitoshi Hotokezaka, Ryo Hamanaka, Megumi Hashimoto, Takako Nakano-Tajima, Kotaro Arita, Takeshi Kurohama, Airi Ino, Jun-Ya Tominaga, Noriaki Yoshida
OBJECTIVE: To investigate how types of tooth movement, bodily or tipping, influence the displacement of the center of resistance in teeth and alveolar bone resorption. MATERIALS AND METHODS: Ten-week-old female Wistar rats were divided into eight groups of different factors, as follows: type of movement (bodily and tipping) and force magnitude (10, 25, 50, and 100 cN). The maxillary left first molars were moved mesially with nickel-titanium coil springs for 28 days...
February 16, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28195497/incisor-and-molar-overjet-arch-contraction-and-molar-relationship-in-the-mixed-dentition-in-repaired-complete-unilateral-cleft-lip-and-palate-a-qualitative-and-quantitative-appraisal
#2
Suteeta Disthaporn, Sunjay Suri, Bruce Ross, Bryan Tompson, Diogenes Baena, David Fisher, Wendy Lou
OBJECTIVE: To compare the mixed dentition incisor and molar overjet, severity of contraction of the dental arch, and the sagittal molar relationship on the cleft side vs the noncleft side in children with repaired complete unilateral cleft of the lip and palate (UCLP). MATERIALS AND METHODS: Orthodontic records taken prior to orthodontic preparation for alveolar bone grafting were screened to select study casts from patients with nonsyndromic repaired complete UCLP who did not have mandibular skeletal or dental asymmetry...
February 14, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28165289/forces-and-moments-delivered-by-the-pet-g-aligner-to-a-maxillary-central-incisor-for-palatal-tipping-and-intrusion
#3
Lixia Gao, Andrea Wichelhaus
OBJECTIVE: To evaluate the effect of material thickness and width of the gingival edge on the forces and moments delivered by aligners prepared from Duran foil (PET-G) to a maxillary incisor during tipping and intrusion. MATERIALS AND METHODS: Aligners prepared from PET-G of three material thicknesses (0.5, 0.625, and 0.75 mm) and three widths of gingival edges (0-1, 3-4, and 6-7 mm) were investigated during incisor palatal tipping and intrusion of 0.5 mm each. Forces and moments were measured with a six-component measuring device...
February 6, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28156127/morphological-relationship-analysis-of-impacted-maxillary-canines-and-the-adjacent-teeth-on-3-dimensional-reconstructed-ct-images
#4
Yoojun Kim, Hong-Keun Hyun, Ki-Taeg Jang
OBJECTIVE: To examine whether there is a relationship between maxillary canine impaction and the morphologic characteristics of the maxillary dentition, especially the root of the lateral incisor. MATERIALS AND METHODS: In this study, we selected only patients with unilateral maxillary canine impaction to compare the morphologic characteristics of the dentition on the impaction side and the clinically normal eruption side. The sample size was decided to be 40 based on the pilot study...
February 3, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28139938/changes-in-pharyngeal-airway-dimensions-and-hyoid-bone-position-after-maxillary-protraction-with-different-alternate-rapid-maxillary-expansion-and-construction-protocols-a-prospective-clinical-study
#5
Mevlut Celikoglu, Muhammet Hilmi Buyukcavus
OBJECTIVE: To evaluate the changes in pharyngeal airway dimensions and the position of the hyoid bone after maxillary protraction with different alternate rapid maxillary expansion and construction (Alt-RAMEC) protocols in patients with skeletal class III malocclusion as a result of maxillary retrusion. MATERIAL AND METHODS: The patients with skeletal class III malocclusions were consecutively divided into two groups. Group 1 consisted of 17 patients (11 boys and 6 girls, mean age 11...
January 31, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28128634/twin-block-appliance-with-acrylic-capping-does-not-have-a-significant-inhibitory-effect-on-lower-incisor-proclination
#6
Mark Cornelis van der Plas, Krista Ingeborg Janssen, Nikolaos Pandis, Christos Livas
OBJECTIVE: To investigate the effect of acrylic capping, treatment duration, overjet, and lower incisor inclination on the posttreatment tooth position in patients treated with 2 Twin Block (TB) appliance versions. MATERIALS AND METHODS: Cephalograms of 56 patients with Class II malocclusion (21 boys, 35 girls; mean age before treatment [T1] = 12.5 years; standard deviation, 0.7) treated with a TB appliance with either acrylic capping or ball-ended clasps on lower incisors were retrospectively collected and traced...
January 27, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28121165/mode-of-correction-is-related-to-treatment-timing-in-class-ii-patients-treated-with-the-mandibular-advancement-locking-unit-malu-appliance
#7
Muhsin Candir, Heidi Kerosuo
OBJECTIVE: To investigate the proportion of skeletal/dentoalveolar components for correction of Class II malocclusion in relation to the pubertal growth peak (PGP) among patients treated with the mandibular advancement locking unit (MALU) appliance. MATERIALS AND METHODS: We conducted a retrospective study of 27 orthodontic patients (age range: 12-18 years; mean age 14.9 years) with skeletal Class II Division 1 malocclusion who were treated with the MALU appliance until they reached Class I occlusion with overjet and overbite within normal range...
January 25, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28121164/herbst-appliance-effects-on-pharyngeal-airway-ventilation-evaluated-using-computational-fluid-dynamics
#8
Tomonori Iwasaki, Hideo Sato, Hokuto Suga, Ayaka Minami, Yuushi Yamamoto, Yoshihiko Takemoto, Emi Inada, Issei Saitoh, Eriko Kakuno, Ryuzo Kanomi, Youichi Yamasaki
OBJECTIVE: To evaluate the effect of a Herbst appliance on ventilation of the pharyngeal airway (PA) using computational fluid dynamics (CFD). MATERIALS AND METHODS: Twenty-one Class II patients (10 boys; mean age, 11.7 years) who required Herbst therapy with edgewise treatment underwent cone-beam computed tomography (CBCT) before and after treatment. Nineteen Class I control patients (8 boys; mean age, 11.9 years) received edgewise treatment alone. The pressure and velocity of the PA were compared between the groups using CFD based on three-dimensional CBCT images of the PA...
January 25, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28059576/twitter-analysis-of-the-orthodontic-patient-experience-with-braces-vs-invisalign
#9
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/28035838/efficacy-of-auxiliary-devices-for-removal-of-fluorescent-residue-after-bracket-debonding
#10
Rafael Santos Rocha, Fabio Martins Salomão, Lucas Silveira Machado, Renato Herman Sundfeld, Ticiane Cestari Fagundes
OBJECTIVE: To evaluate four protocols for removal of fluorescent materials after bracket debonding. MATERIALS AND METHODS: Resin removal from 40 bovine enamel surfaces was performed according to groups (n = 10): conventional (C), white LED (W), LED that evidenced fluorescence (F), and fluorescent lens (FL). The following analyses were performed: sample thickness, superficial area of resin residue, and areas of resin residue or worn enamel in depth. ANOVA and Tukey tests were used to analyze sample thickness (P ≤ ...
December 30, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/28029266/pain-and-discomfort-during-the-first-week-of-rapid-maxillary-expansion-rme-using-two-different-rme-appliances-a-randomized-controlled-trial
#11
Ingalill Feldmann, Farhan Bazargani
OBJECTIVES: To evaluate and compare perceived pain intensity, discomfort, and jaw function impairment during the first week with tooth-borne or tooth-bone-borne rapid maxillary expansion (RME) appliances. MATERIALS AND METHODS: Fifty-four patients (28 girls and 26 boys) with a mean age of 9.8 years (SD 1.28 years) were randomized into two groups. Group A received a conventional hyrax appliance and group B a hybrid hyrax appliance anchored on mini-implants in the anterior palate...
December 28, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/27824255/screw-type-device-diameter-and-orthodontic-loading-influence-adjacent-bone-remodeling
#12
Jonathan Christian Francis, Ulas Oz, Larry L Cunningham, Pinar Emecen Huja, Richard J Kryscio, Sarandeep S Huja
OBJECTIVE: To evaluate the effect of diameter and orthodontic loading of a screw-type implantable device on bone remodeling. MATERIALS AND METHODS: Screw-shaped devices of four distinct diameters, 1.6, 2, 3, and 3.75 mm, were placed into edentulous sites in five skeletally mature beagle dogs (n = 14/dog) following premolar extraction. Using a split-mouth design, devices on one side were loaded using calibrated 2N coil springs. Epifluorescent bone labels were administered intravenous prior to sacrifice...
December 8, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/27905816/cementocyte-cell-death-occurs-in-rat-cellular-cementum-during-orthodontic-tooth-movement
#13
Humihiro Matsuzawa, Naoko Toriya, Yuya Nakao, Moe Konno-Nagasaka, Toshiya Arakawa, Miki Okayama, Itaru Mizoguchi
OBJECTIVE: To clarify the mechanism of root resorption during orthodontic treatment, we examined cementocyte cell death and root resorption in the cellular cementum on the pressure side during experimental tooth movement. MATERIALS AND METHODS: Using 8-week-old male Wistar rats, the right first molar was pushed mesiobuccally with a force of 40 g by a Ni-Ti alloy wire while the contralateral first molar was used as a control. Localization and number of cleaved caspase-3-positive and single-stranded DNA (ssDNA) - positive cells were evaluated using dual-label immunohistochemistry with anticleaved caspase-3 and anti-ssDNA antibodies...
December 1, 2016: Angle Orthodontist
https://www.readbyqxmd.com/read/28068497/author-index-to-volume-86
#14
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28068496/reviewers-for-the-angle-orthodontist-for-2016
#15
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28068495/the-angle-research-prize-turns-25
#16
Steven J Lindauer
No abstract text is available yet for this article.
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28068494/academic-orthodontic-opportunities
#17
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/27513029/influence-of-skeletal-class-in-the-morphology-of-cervical-vertebrae-a-study-using-cone-beam-computed-tomography
#18
Luela Aranitasi, Beatriz Tarazona, Natalia Zamora, Jose Luis Gandía, Vanessa Paredes
OBJECTIVES: To quantify the prevalence of cervical vertebrae anomalies and to analyze any association between them and skeletal malocclusions or head posture positions in the same study. MATERIALS AND METHODS: Two hundred forty patients who were attending the Department of Orthodontics of the University of Valencia for orthodontic treatment were selected and divided into three groups: skeletal Class I (control group, 0° <ANB < 4°), Class II (ANB ≥ 4°), and Class III (ANB ≤ 0°) according to ANB Steiner angle...
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/27508935/objective-assessment-of-compliance-with-intra-and-extraoral-removable-appliances
#19
Angela Arreghini, Silvia Trigila, Luca Lombardo, Giuseppe Siciliani
OBJECTIVE: To conduct an objective assessment of the level of compliance in young patients prescribed various types of removable appliances and to determine the influence of device type, treatment duration, and patient age, gender, psychological maturity, and awareness of monitoring on compliance. MATERIALS AND METHODS: A total of 30 patients were fitted with either a class 2 (Frankel or bionator) or a class 3 (face mask) removable appliance, each bearing a compliance indicator chip, and they were instructed to wear them for 13 hours per day...
January 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/27504821/orthodontically-induced-external-apical-root-resorption-in-patients-treated-with-fixed-appliances-vs-removable-aligners
#20
Alejandro Iglesias-Linares, Boris Sonnenberg, Beatriz Solano, Rosa-Maria Yañez-Vico, Enrique Solano, Steven J Lindauer, Carlos Flores-Mir
OBJECTIVE: To determine whether orthodontic treatment with removable aligners vs fixed orthodontic appliances is associated with a different frequency of orthodontically induced external apical root resorption (OIEARR) when genetic, radiographic, and clinical factors are accounted for. MATERIALS AND METHODS: Three hundred seventy-two orthodontic patients treated with removable aligners (Invisalign) or fixed appliances were genetically screened for interleukin 1B gene (IL1B) (rs1143634), interleukin 1 receptor antagonist gene (IL1RN) (rs419598), and osteopontin gene (SPP1) (rs9138/rs11730582)...
January 2017: Angle Orthodontist
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