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Progress in Orthodontics

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https://read.qxmd.com/read/30854613/clear-aligner-treatment-different-perspectives-between-orthodontists-and-general-dentists
#1
Fabrizia d'Apuzzo, Letizia Perillo, Caroline K Carrico, Tommaso Castroflorio, Vincenzo Grassia, Steven J Lindauer, Bhavna Shroff
PURPOSE: To evaluate differences between orthodontists and general dentists in experience with clear aligners (CA), patients' demand and perception, types of patients, and malocclusion treated with CA and to compare the two groups of clinicians not using CA in their practice. METHODS: A Web-based survey was developed and sent to the 129 members of the European Aligner Society and randomly to 200 doctors of dental surgery by e-mail. They responded on demographics and to one of two different parts for clinicians using CA or not using CA...
March 11, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30828752/maxillary-posterior-intrusion-with-corticotomy-assisted-approaches-with-zygomatic-anchorage-a-finite-element-stress-analysis
#2
Cemile Uysal, Burcu Baloş Tuncer, Cumhur Tuncer
BACKGROUND: Anterior open bite is one of the most difficult malocclusions to treat and maintain in orthodontics. An effective treatment approach to correct anterior open bite is the intrusion of maxillary posterior teeth. The aim of this study was to evaluate the effects of corticotomy-assisted posterior maxillary intrusion with zygomatic anchorage by using finite element stress analysis. METHODS: An acrylic bite block on the posterior teeth including two transpalatal arches were modeled and 1...
March 4, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30799516/are-there-benefits-from-using-bone-borne-maxillary-expansion-instead-of-tooth-borne-maxillary-expansion-a-systematic-review-with-meta-analysis
#3
REVIEW
Marietta Krüsi, Theodore Eliades, Spyridon N Papageorgiou
BACKGROUND: The aim of the current systematic review was to compare the clinical effects of bone-borne or hybrid tooth-bone-borne rapid maxillary expansion (RME) with conventional tooth-borne RME in the treatment of maxillary deficiency. METHODS: Nine databases were searched up to September 2018 for randomized clinical trials comparing bone-borne or hybrid tooth-bone-borne RME to conventional tooth-borne RME in patients of any age or sex. After duplicate study selection, data extraction, and risk of bias assessment with the Cochrane tool, random effects meta-analyses of mean differences (MD) and their 95% confidence intervals (CIs) were performed, followed by assessment of the quality of evidence with GRADE...
February 25, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30773604/changes-of-alveolar-bone-dehiscence-and-fenestration-after-augmented-corticotomy-assisted-orthodontic-treatment-a-cbct-evaluation
#4
Liangyan Sun, Lingjun Yuan, Bo Wang, Lina Zhang, Guofang Shen, Bing Fang
BACKGROUND: To evaluate the changes of alveolar dehiscence and fenestration after augmented corticotomy-assisted orthodontic treatment on cone-beam computed tomography (CBCT) compared with traditional pre-surgical orthodontics, both quantitatively and qualitatively. METHODS: Two hundred and four anterior teeth from 17 skeletal class III malocclusions were divided into four groups. Groups G1 (upper teeth) and G3 (lower teeth), comprising 120 teeth, accepted traditional pre-surgical orthodontics; groups G2 (upper teeth) and G4(lower teeth), comprising 84 teeth, accepted augmented corticotomy-assisted pre-surgical orthodontics...
February 18, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30740615/secondary-alveolar-bone-grafting-using-autologous-versus-alloplastic-material-in-the-treatment-of-cleft-lip-and-palate-patients-systematic-review-and-meta-analysis
#5
REVIEW
A Scalzone, C Flores-Mir, D Carozza, F d'Apuzzo, V Grassia, L Perillo
BACKGROUND: A systematic review assessing autologous versus alloplastic bone for secondary alveolar bone grafting in patients with cleft lip and palate was published in 2011 and included only one randomized controlled trial comparing traditional iliac bone graft to recombinant human bone morphogenetic protein-2 (rh-BMP2). OBJECTIVES: To perform a systematic review with meta-analysis on the use of secondary alveolar bone grafting (autologous bone and rh-BMP2 graft) in order to improve bone volume and height in patients with cleft lip and palate...
February 11, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30714076/effects-of-impaction-severity-of-treated-palatally-displaced-canines-on-periodontal-outcomes-a-retrospective-study
#6
Alberto Caprioglio, Ilaria Comaglio, Lea Siani, Rosamaria Fastuca
BACKGROUND: Even though periodontal health was suggested to be not related to the traction technique, some other variables might influence the esthetic outcome of palatally displaced canines (PDC) when aligned, such as the initial position and impaction rate of the canine before treatment. The purpose of the present study was therefore to evaluate the existing correlations between periodontal health outcome of PDC after their exposure and alignment and their initial position identified according to the different rates of impaction severity...
February 4, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30687891/clinical-performance-of-uncoated-and-precoated-polymer-mesh-base-ceramic-brackets
#7
Hüdanur Yılmaz Née Huda Abulkbash, Selma Elekdag-Türk
BACKGROUND: To evaluate the clinical performance of the two types of InVu ceramic brackets. The clinical performance of these brackets was measured by determining failure as well as survival rates and tie-wing fractures. Enamel surface evaluation following bracket and remnant removal was performed. SUBJECTS AND METHODS: Forty non-extraction patients (31 females, 9 males) with a mean chronological age of 16 years 4 months composed this study. Bonding was performed with a split-mouth design using operator-coated and Readi-Base eXact InVu brackets...
January 28, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30663006/a-finite-element-analysis-of-the-effects-of-archwire-size-on-orthodontic-tooth-movement-in-extraction-space-closure-with-miniscrew-sliding-mechanics
#8
Jun Kawamura, Naohiko Tamaya
BACKGROUND: Sliding mechanics with miniscrews is recently used for extraction space closure. The purpose of this study was to elucidate how and why the archwire size affects long-term tooth movement in miniscrew sliding mechanics. METHODS: Long-term orthodontic tooth movements were simulated based on a remodeling law of the alveolar bone by using a finite element method, in which the bracket rotated freely within a clearance gap (a play) of the archwire-bracket slot...
January 21, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30637515/maxillofacial-morphological-factors-related-to-acceleration-of-maxillary-growth-attributed-to-facial-mask-treatment-a-structural-superimposition-study
#9
Takashi S Kajii, Yui Sakaguchi, Yoshihiko Sawa, Sachio Tamaoki
BACKGROUND: Anatomical textbooks mention that the contact between the pterygoid process and the palatine's pyramidal process is not a "suture" but "conjugation.".The aim was to evaluate the maxillofacial morphological factor responding most to the orthopedic force of facial mask treatment, using the structural superimposition analysis. METHODS: Thirty-one girls with Angle Class III malocclusion treated using a facial mask (FM group) and 11 girls with pseudo-Class III malocclusion (pseudo-III group) were examined...
January 14, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30613836/the-mechanical-behavior-of-as-received-and-retrieved-nickel-titanium-orthodontic-archwires
#10
Luca Lombardo, Giorgia Toni, Valentina Mazzanti, Francesco Mollica, Giorgio Alfredo Spedicato, Giuseppe Siciliani
OBJECTIVES: The aim of this study is to investigate and compare the characteristics of as received and retrieved NiTi archwires at a constant temperature by plotting their load/deflection graphs and quantifying three parameters describing the discharge plateau phase. MATERIALS AND METHODS: Two hundred four NiTi archwires, traditional and heat-activated, of various cross sections, were obtained from 5 different manufacturers. Specimens prepared from the selected wires were subjected to a three-point bending test where 92 were retrieved through an in vivo retrieval protocol (crowding group C1 and group C2), 56 went through an in vitro retrieval protocol, and 56 were as received...
January 7, 2019: Progress in Orthodontics
https://read.qxmd.com/read/30506410/united-reference-method-for-three-dimensional-treatment-evaluation
#11
Shereef Shahen, Manuel O Lagravère, Gennaro Carrino, Fady Fahim, Reham Abdelsalam, Carlos Flores-Mir, Letizia Perillo
BACKGROUND: Reproducible and descriptive Three-dimensional treatment evaluation can enhance future treatment based on realistic results. So, the purpose of this study was to describe a new method for three-dimensional treatment evaluation showing how to use fully-automated craniofacial superimposition of CBCT records combined with reference system to obtain descriptive and comparable results. This new method was named United Reference Method (URM). METHODS: URM is a combination of automated 3D superimposition on anterior cranial base surface anatomy and measurements based on reference system...
December 3, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30450504/three-dimensional-soft-tissue-analysis-of-the-face-following-micro-implant-supported-maxillary-skeletal-expansion
#12
Sara Abedini, Islam Elkenawy, Eric Kim, Won Moon
BACKGROUND: Skeletal maxillary expander (MSE) is one of the more recent expander designs being utilized for skeletal expansion by splitting the midpalatal sutures applying forces through palatal micro-implants. Its effects on the soft tissue remain a question asked by both patients and clinicians. The aim of this study was to analyze and quantify soft tissue facial changes induced by MSE. METHODS: 3D facial images (3dMD) were used to capture face scans of 25 patients generating 3D soft tissue meshes before expansion (T0), right after expansion (T1), and 1 year in retention (T2)...
November 19, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30417234/new-application-of-dynamic-magnetic-resonance-imaging-for-the-assessment-of-deglutitive-tongue-movement
#13
Issareeya Ekprachayakoon, Jun J Miyamoto, Maristela Sayuri Inoue-Arai, Ei-Ichi Honda, Jun-Ichi Takada, Tohru Kurabayashi, Keiji Moriyama
BACKGROUND: Deglutitive motion of the tongue may function to maintain tooth position. However, the causation between abnormal patterns of orofacial muscle function and dental malocclusion remains unclear. To clarify the pathogenic mechanism of malocclusion, it is important to determine the relative positional relationship between the tongue tip and incisor edge or the dorsal tongue and palate during deglutition. Here, we assessed the utility of 3-T segmented cine-magnetic resonance (MR) imaging, combined with static MR images for hard tissue visualization, in assessing the relationship between the tongue and the surrounding tissues during deglutitive tongue movement...
November 12, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30393829/gender-and-growth-variation-in-palatal-bone-thickness-and-density-for-mini-implant-placement
#14
Sumit Yadav, Emily Sachs, Meenakshi Vishwanath, Kristen Knecht, Madhur Upadhyay, Ravindra Nanda, Aditya Tadinada
BACKGROUND: The objective was to compare the palatal bone thickness (PBT) and palatal bone density (PBD) in the anterior, middle, and posterior part of the palate in males and females. METHODS: This retrospective study reviewed cone beam computed tomography scans of 359 patients. The scans were divided into 99 growing males, 105 growing females, 74 non-growing males, and 81 non-growing females. The measurements of PBT and PBD were made in between the canine and first premolar, the first premolar and second premolar, the second premolar and first molar, and the first molar and second molar...
November 5, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30370430/comparison-of-piezocision-and-discision-methods-in-orthodontic-treatment
#15
Mustafa Cihan Yavuz, Oguzhan Sunar, Suleyman Kutalmış Buyuk, Alpdogan Kantarcı
BACKGROUND: Discision method may provide an alternative to the piezocision approach in accelerated orthodontic treatment. The purpose of this study was to investigate the efficacy of discision on accelerated orthodontic tooth movement in comparison to the piezocision method in moderate crowding Angle Class I malocclusions. METHODS: Thirty-five female individuals were included in this clinical study. The participants were classified into three groups as conventional fixed non-extraction orthodontic treatment only (OT, n = 14), piezocision in addition to fixed non-extraction orthodontic treatment (PG, n = 9), and discision in addition to fixed non-extraction orthodontic treatment (DG, n = 12)...
October 29, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30345476/zygomaticomaxillary-modifications-in-the-horizontal-plane-induced-by-micro-implant-supported-skeletal-expander-analyzed-with-cbct-images
#16
Daniele Cantarella, Ramon Dominguez-Mompell, Christoph Moschik, Luca Sfogliano, Islam Elkenawy, Hsin Chuan Pan, Sanjay M Mallya, Won Moon
BACKGROUND: Miniscrew-assisted rapid palatal expansion (MARPE) has been adopted in recent years to expand the maxilla in late adolescence and adult patients. Maxillary Skeletal Expander (MSE) is a device that exploits the principles of skeletal anchorage to transmit the expansion force directly to the maxillary bony structures and is characterized by the miniscrews' engagement of the palatal and nasal cortical bone layers. In the literature, it has been reported that the zygomatic buttress is a major constraint that hampers the lateral movement of maxilla, since maxilla is located medially to the zygomatic arches...
October 22, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30345472/early-class-iii-treatment-with-hybrid-hyrax-facemask-in-comparison-to-hybrid-hyrax-mentoplate-skeletal-and-dental-outcomes
#17
Jan H Willmann, Manuel Nienkemper, Nour Eldin Tarraf, Benedict Wilmes, Dieter Drescher
BACKGROUND: Protraction of maxilla is usually the preferred and more commonly used treatment approach for skeletal Class III with a retrognathic maxilla. The aim of this study was the comparison of the skeletal and dental effects of two skeletally borne appliances for maxillary protraction: a) Hybrid-Hyrax in combination with facemask (FM), b) Hybrid-Hyrax in combination with Mentoplate (ME). METHODS: Thirty four Patients (17 facemask, 17 Mentoplate) were investigated by means of pre- and posttreatment cephalograms...
October 22, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30318565/the-immediate-effect-of-alternate-rapid-maxillary-expansions-and-constrictions-on-the-alveolus-a-retrospective-cone-beam-computed-tomography-study
#18
Narayan H Gandedkar, Eric Jein-Wein Liou
BACKGROUND: Rapid maxillary expansion reduced the expander's anchor teeth buccal alveolar bone thickness. However, the effects of alternate rapid maxillary expansions and constrictions (Alt-RAMEC) on the expander's anchor teeth alveolar thickness has not been assessed. The purpose of this retrospective study was to evaluate the effects of Alt-RAMEC on the alveolus surrounding the anchor teeth of a double-hinged expander. METHODS: Twenty-six individuals, including 12 males (11...
October 15, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30294769/the-inflection-point-a-torque-reference-for-lingual-bracket-positioning-on-the-palatal-surface-curvature-of-the-maxillary-central-incisor
#19
Abdel Hadi Kanj, Joseph Bouserhal, Essam Osman, Ahmed Abdel Moneim El Sayed
BACKGROUND: Contrary to buccal orthodontics, lingual orthodontics has no reference for vertical bracket positioning on the maxillary central incisor. The aim of this study was to provide a reference point in relation to torque for lingual bracket positioning on the palatal surface curvature (PSC) of the maxillary central incisor. METHODS: Cone beam computed tomography (CBCT) radiographs of 50 right maxillary central incisors from archives of a dental radiographic center were transferred to Photoshop, where their PSC was traced using pen-tool...
October 8, 2018: Progress in Orthodontics
https://read.qxmd.com/read/30280257/the-difference-of-stress-distribution-of-maxillary-expansion-using-rapid-maxillary-expander-rme-and-maxillary-skeletal-expander-mse-a-finite-element-analysis
#20
Nathania Hartono, Benny M Soegiharto, Retno Widayati
BACKGROUND: Maxillary skeletal expander (MSE) in combination with miniscrews was developed to overcome the drawbacks that may have resulted from the application of conventional rapid maxillary expander (RME). This research was conducted to analyze the difference of stress distribution of maxillary expansion using RME and MSE in the region of interests (ROIs): first molars (M1), palatal alveolar bones of M1, palatine sutures, zygomatic sutures, miniscrews, and their surrounding bones. METHODS: A dry skull was scanned using CBCT and rendered into a three-dimensional (3D) model of craniomaxillary structures...
October 3, 2018: Progress in Orthodontics
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