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Korean Journal of Orthodontics

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https://www.readbyqxmd.com/read/30206534/correction-to-hard-and-soft-tissue-profiles-of-the-midface-region-in-patients-with-skeletal-class-iii-malocclusion-using-cone-beam-computed-tomography-multiplanar-reconstructed-image-analysis
#1
Bomi Kim, Hyung-Chul Lee, Seong-Hun Kim, Yongil Kim, Woosung Son, Seong Sik Kim
[This corrects the article on p. 143 in vol. 48, PMID: 29732300.].
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206533/effects-of-continuous-force-application-for-extrusive-tipping-movement-on-periapical-root-resorption-in-the-rat-mandibular-first-molar
#2
Yoshiro Matsumoto, Siripen Sringkarnboriboon, Takashi Ono
Objective: The purpose of this study was to clarify the effects of continuous force application for extrusive tipping movement and occlusal interference on periapical root resorption in the rat mandibular first molar. Methods: We constructed an appliance comprising a titanium screw implant with a cobalt-chromium post as the anchorage unit and a nickel-titanium closed coil spring (50 cN) as the active unit. Force was applied on the mandibular left first molar of rats for 8 (n = 10) and 15 days (n = 10; experimental groups), with the tooth in occlusion...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206532/evaluation-of-buccolingual-molar-inclinations-among-different-vertical-facial-types
#3
Feyza Eraydin, Derya Germec Cakan, Murat Tozlu, Fulya Ozdemir
Objective: The aim of this study was to compare the buccolingual inclination of maxillary and mandibular molars in adults with different vertical facial types. Methods: Cone-beam computed tomography images of 135 adult patients (age, 20-45 years) with skeletal Class I maxillomandibular relationships were assigned to normodivergent (n = 46), hypodivergent (n = 49), and hyperdivergent groups (n = 40) according to linear and angular sella-nasion/gonion-menton measurements...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206531/pain-perception-among-patients-treated-with-passive-self-ligating-fixed-appliances-and-invisalign-%C3%A2-aligners-during-the-first-week-of-orthodontic-treatment
#4
Naif N Almasoud
Objective: This study was performed to compare the perception of pain between patients treated with passive self-ligating fixed appliances and those treated with Invisalign aligners. Methods: This prospective study conducted in Saudi Arabia used an estimated sample of 64 patients from a private dental clinic. After obtaining written informed consent, the patients were divided into two groups; one group (n = 32) was treated using passive self-ligating fixed appliances and the other group (n = 32) using Invisalign® aligners...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206530/effects-of-thermoforming-on-the-physical-and-mechanical-properties-of-thermoplastic-materials-for-transparent-orthodontic-aligners
#5
Jeong-Hyun Ryu, Jae-Sung Kwon, Heng Bo Jiang, Jung-Yul Cha, Kwang-Mahn Kim
Objective: The aim of this systematic multiscale analysis was to evaluate the effects of thermoforming on the physical and mechanical properties of thermoplastic materials used to fabricate transparent orthodontic aligners (TOAs). Methods: Specimens were fabricated using four types of thermoplastic materials with different thicknesses under a thermal vacuum. Transparency, water absorption and solubility, surface hardness, and the results of three-point bending and tensile tests were evaluated before and after thermoforming...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206529/displacement-and-stress-distribution-of-the-maxillofacial-complex-during-maxillary-protraction-using-palatal-plates-a-three-dimensional-finite-element-analysis
#6
Jusuk Eom, Mohamed Bayome, Jae Hyun Park, Hee Jin Lim, Yoon-Ah Kook, Seong Ho Han
Objective: The purpose of this study was to analyze initial displacement and stress distribution of the maxillofacial complex during dentoskeletal maxillary protraction with various appliance designs placed on the palatal region by using three-dimensional finite element analysis. Methods: Six models of maxillary protraction were developed: conventional facemask (Type A), facemask with dentoskeletal hybrid anchorage (Type B), facemask with a palatal plate (Type C), intraoral traction using a Class III palatal plate (Type D), facemask with a palatal plate combined with rapid maxillary expansion (RME; Type E), and Class III palatal plate intraoral traction with RME (Type F)...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206528/accuracy-of-three-dimensional-cephalograms-generated-using-a-biplanar-imaging-system
#7
Ha-Yeon Park, Jae-Seo Lee, Jin-Hyoung Cho, Hyeon-Shik Hwang, Kyung-Min Lee
Objective: Biplanar imaging systems allow for simultaneous acquisition of lateral and frontal cephalograms. The purpose of this study was to compare measurements recorded on three-dimensional (3D) cephalograms constructed from two-dimensional conventional radiographs and biplanar radiographs generated using a new biplanar imaging system with those recorded on cone-beam computed tomography (CBCT)-generated cephalograms in order to evaluate the accuracy of the 3D cephalograms generated using the biplanar imaging system...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206527/histomorphometric-evaluation-of-the-bone-surrounding-orthodontic-miniscrews-according-to-their-adjacent-root-proximity
#8
Hyun-Ju Oh, Jung-Yul Cha, Hyung-Seog Yu, Chung-Ju Hwang
Objective: This study was conducted to perform histomorphometric evaluations of the bone surrounding orthodontic miniscrews according to their proximity to the adjacent tooth roots in the posterior mandible of beagle dogs. Methods: Four male beagle dogs were used for this study. Six orthodontic miniscrews were placed in the interradicular spaces in the posterior mandible of each dog (n = 24). The implanted miniscrews were classified into no loading, immediate loading, and delayed loading groups according to the loading time...
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30206526/reader-s-forum
#9
COMMENT
Ae-Rim Ha
No abstract text is available yet for this article.
September 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003061/resistance-to-sliding-in-orthodontics-misconception-or-method-error-a-systematic-review-and-a-proposal-of-a-test-protocol
#10
REVIEW
Fabio Savoldi, Aggeliki Papoutsi, Simona Dianiskova, Domenico Dalessandri, Stefano Bonetti, James K H Tsoi, Jukka P Matinlinna, Corrado Paganelli
Resistance to sliding (RS) between the bracket, wire, and ligature has been largely debated in orthodontics. Despite the extensive number of published studies, the lack of discussion of the methods used has led to little understanding of this phenomenon. The aim of this study was to discuss variables affecting RS in orthodontics and to suggest an operative protocol. The search included PubMed©, Medline©, and the Cochrane Library©. References of full-text articles were manually analyzed. English-language articles published between January 2007 and January 2017 that performed an in vitro analysis of RS between the bracket, wire, and ligature were included...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003060/clinical-application-of-an-intraoral-scanner-for-serial-evaluation-of-orthodontic-tooth-movement-a-preliminary-study
#11
Dalsun Yun, Dong-Soon Choi, Insan Jang, Bong-Kuen Cha
The aim of this study was to test the clinical application of an intraoral scanner for serial evaluation of orthodontic tooth movement. The maxillary dentitions of eight patients with fixed orthodontic appliances were scanned using an intraoral scanner at the beginning of treatment (T0), and at 1 month (T1), 2 months (T2), 3 months (T3), and 4 months (T4) after T0. The serial digital models were superimposed on the palatal surface as a reference area, and the linear and angular changes of the central incisors, canines, and first molars were evaluated...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003059/effect-of-caspases-and-rankl-induced-by-heavy-force-in-orthodontic-root-resorption
#12
Yukari Minato, Masaru Yamaguchi, Mami Shimizu, Jun Kikuta, Takuji Hikida, Momoko Hikida, Masaaki Suemitsu, Kayo Kuyama, Kazutaka Kasai
Objective: Orthodontic root resorption (ORR) due to orthodontic tooth movement is a difficult treatment-related adverse event. Caspases are important effector molecules for apoptosis. At present, little is known about the mechanisms underlying ORR and apoptosis in the cementum. The aim of the present in vivo study was to investigate the expression of tartrate-resistant acid phosphatase (TRAP), caspase 3, caspase 8, and receptor activator of nuclear factor kappa-B ligand (RANKL) in the cementum in response to a heavy or an optimum orthodontic force...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003058/effects-of-different-primers-on-indirect-orthodontic-bonding-shear-bond-strength-color-change-and-enamel-roughness
#13
Mirella Lemos Queiróz Tavares, Carlos Nelson Elias, Lincoln Issamu Nojima
Objective: We aimed to perform in-vitro evaluation to compare 1) shear bond strength (SBS), adhesive remnant index (ARI), and color change between self-etched and acid-etched primers; 2) the SBS, ARI and color change between direct and indirect bonding; and 3) the enamel roughness (ER) between 12-blade bur and aluminum oxide polisher debonding methods. Methods: Seventy bovine incisors were distributed in seven groups: control (no bonding), direct (DTBX), and 5 indirect bonding (ITBX, IZ350, ISONDHI, ISEP, and ITBXp)...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003057/the-effect-of-occlusogingival-placement-of-clinical-bracket-points-on-the-adaptation-of-a-straight-wire-to-the-lingual-arch-form
#14
Amir Hossein Abdi, Saeed Reza Motamedian, Ehsan Balaghi, Mahtab Nouri
Objective: The aim of this study is to compare the adaptation of a straight wire between brackets positioned at the mid-lingual surface and those placed gingivally by using a three-dimensional simulation software. Methods: This cross-sectional study was performed using OrthoAid, an in-house software. The subjects were 36 adolescents with normal Class I occlusion. For each dental cast, two bracket positioning approaches, namely the middle and gingival, were examined...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003056/comparison-of-treatment-effects-between-four-premolar-extraction-and-total-arch-distalization-using-the-modified-c-palatal-plate
#15
Sung Youn Jo, Mohamed Bayome, Justyn Park, Hee Jin Lim, Yoon-Ah Kook, Seong Ho Han
Objective: The purpose of this study was to compare the skeletal, dental, and soft-tissue treatment effects of nonextraction therapy using the modified C-palatal plate (MCPP) to those of premolar extraction (PE) treatment in adult patients with Class II malocclusion. Methods: Pretreatment and posttreatment lateral cephalographs of 40 adult patients with Class II malocclusion were retrospectively analyzed. The MCPP group comprised 20 patients treated with total arch distalization of the maxillary arch while the PE group comprised 20 patients treated with four PE...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003055/trend-of-health-care-utilization-of-cleft-lip-and-or-palate-in-korea-during-2007-2016
#16
Mihee Hong, Seung-Hak Baek
Objective: This study is performed to investigate the trend of health care (HC) utilization among cleft lip and/or palate (CL/P) during 2007-2016 by using data from the Korean National Health Insurance Service (KNHIS). Methods: The KNHIS data were reorganized to count a specific patient only once for a specific year. Cleft type (cleft lip [CL], cleft palate [CP], and cleft lip and palate [CLP]), sex, and age at HC utilization were investigated. The study period was divided into the first half (2007-2011) and the last half (2012-2016)...
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/30003054/reader-s-forum
#17
COMMENT
Mi-Young Lee
No abstract text is available yet for this article.
July 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29733081/reader-s-forum
#18
COMMENT
Seungweon Lim
No abstract text is available yet for this article.
May 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29732306/the-effectiveness-of-corticotomy-and-piezocision-on-canine-retraction-a-systematic-review
#19
REVIEW
Nita Viwattanatipa, Satadarun Charnchairerk
The aim of this systematic review was to evaluate the effectiveness and complications of corticotomy and piezocision in canine retraction. Five electronic databases (PubMed, SCOPUS, Web of Science, Embase, and CENTRAL) were searched for articles published up to July 2017. The databases were searched for randomized control trials (RCTs), with a split-mouth design, using either corticotomy or piezocision. The primary outcome reported for canine retraction was either the amount of tooth movement, rate of tooth movement, or treatment time...
May 2018: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/29732305/cone-beam-computed-tomography-based-diagnosis-and-treatment-simulation-for-a-patient-with-a-protrusive-profile-and-a-gummy-smile
#20
Shunsuke Uesugi, Toshihiro Imamura, Satoshi Kokai, Takashi Ono
For patients with bimaxillary protrusion, significant retraction and intrusion of the anterior teeth are sometimes essential to improve the facial profile. However, severe root resorption of the maxillary incisors occasionally occurs after treatment because of various factors. For instance, it has been reported that approximation or invasion of the incisive canal by the anterior tooth roots during retraction may cause apical root damage. Thus, determination of the position of the maxillary incisors is key for orthodontic diagnosis and treatment planning in such cases...
May 2018: Korean Journal of Orthodontics
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