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American Journal of Orthodontics and Dentofacial Orthopedics

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https://www.readbyqxmd.com/read/28153173/directed-acyclic-graphs-a-tool-to-identify-confounders-in-orthodontic-research-part-i
#1
EDITORIAL
Thikriat S Al-Jewair, Nikolaos Pandis, Yu-Kang Tu
No abstract text is available yet for this article.
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153172/when-communicating-isn-t-enough
#2
EDITORIAL
Laurance Jerrold
No abstract text is available yet for this article.
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153171/forces-and-moments-applied-during-derotation-of-a-maxillary-central-incisor-with-thinner-aligners-an-in-vitro-study
#3
Fayez Elkholy, Falko Schmidt, Rudolf Jäger, Bernd G Lapatki
INTRODUCTION: Recent studies have shown that therapeutic loads applied to individual teeth by aligners may substantially exceed recommended values. The primary purpose of this study was to quantify force and moment components during derotation of a maxillary central incisor when 0.3-mm-thick or 0.4-mm-thick polyethylene terephthalate glycol aligners were used instead of conventional polyethylene terephthalate glycol aligners with a minimum thickness of 0.5 mm. METHODS: The test setup consisted of an acrylic model of a maxilla with a separated right central incisor mounted on a 3-dimensional force and moment sensor...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153170/root-resorption-of-maxillary-incisors-retracted-with-and-without-skeletal-anchorage
#4
Sérgio Estelita Barros, Guilherme Janson, Kelly Chiqueto, Vitor Oliveira Baldo, Taiana Oliveira Baldo
INTRODUCTION: Our objective was to compare root resorption degree of the maxillary central incisors retracted with and without skeletal anchorage. METHODS: This nonrandomized historical control study included 37 patients requiring maximum anterior retraction and treated with extraction of 2 maxillary premolars. Group 1 consisted of 22 patients (11 male, 11 female) in whom anterior retraction was performed without skeletal anchorage, and group 2 included 15 patients (3 male, 12 female) treated with skeletally anchored anterior retraction...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153169/juvenile-idiopatic-arthritis-in-orthodontics-case-report-with-a-6-year-follow-up
#5
Luciane Macedo de Menezes, Susana Maria Deon Rizzatto, Eduardo Martinelli Santayana de Lima, Paulo Ricardo Baccarin Matje, Maria Mercedes Picarelli
Juvenile idiopathic arthritis is a childhood disease that causes joint swelling and pain, and limitation in the range of joint movements. It is characterized by progressive destruction of the joints. Juvenile idiopathic arthritis is the most frequent systemic inflammatory disease of the temporomandibular joint. When the temporomandibular joint is involved, orthodontic treatment becomes more challenging. This case report shows the treatment of a young patient with a Class II subdivision malocclusion and juvenile idiopathic arthritis...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153168/transport-distraction-osteogenesis-combined-with-orthodontic-treatment-in-a-patient-with-unilateral-temporomandibular-joint-ankylosis
#6
Seo-Yeon Jung, Jung-Hyun Park, Hyung-Sik Park, Hyoung-Seon Baik
Temporomandibular joint ankylosis manifests a range of clinical characteristics dependent upon the age of onset, the affected side, and the severity. When it occurs during development, mandibular growth is affected, resulting in severe retrusion or asymmetry as well as limitation of mandibular movements. Progressive asymmetric mandibular growth in unilateral ankylosis causes canting of the occlusal plane. In this case report, we present a successful temporomandibular joint reconstruction using transport distraction osteogenesis combined with camouflage orthodontic treatment for occlusal canting correction of a patient with unilateral temporomandibular joint ankylosis and severe facial asymmetry...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153167/intermittent-hypoxia-causes-mandibular-growth-retardation-and-macroglossia-in-growing-rats
#7
Jun Hosomichi, Yo-Ichiro Kuma, Shuji Oishi, Hisashi Nagai, Hideyuki Maeda, Risa Usumi-Fujita, Yasuhiro Shimizu, Sawa Kaneko, Chisa Shitano, Jun-Ichi Suzuki, Ken-Ichi Yoshida, Takashi Ono
INTRODUCTION: In this study, we aimed to examine the role of intermittent hypoxia (IH) in dentofacial morphologic changes in growing rats. METHODS: Seven-week-old male rats were exposed to IH at 20 cycles per hour (nadir of 4% oxygen to peak of 21% oxygen) for 8 hours per day for 6 weeks. Control rats were exposed to normoxia (N). Maxillofacial growth was compared between the 2 groups by linear measurements on cephalometric radiographs. To examine the dental arch morphology, study models and microcomputed tomography images of the jaws were taken...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153166/morphology-of-palatally-impacted-canines-a-case-controlled-cone-beam-volumetric-tomography-study
#8
Pilana Vithanage Kalani Shihanika Hettiarachchi, Richard John Olive, Paul Monsour
INTRODUCTION: The aim of this study was to investigate the relationships between an apical curvature or a hook and the crown/root ratio in subjects with and without palatally impacted maxillary canines. METHODS: An experimental group of 44 patients (17 boys, 27 girls; mean age, 13.6 years) with 59 palatally impacted maxillary canines was selected from the records of patients referred to a radiology practice for cone-beam imaging. If a patient had bilateral palatally impacted canines, 1 canine was randomly selected for analysis...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153165/how-far-is-the-root-apex-of-a-unilateral-impacted-canine-from-the-root-apices-arch-form
#9
Sung-Hun Kim, You-Min Kim, Sewoong Oh, Seong-Sik Kim, Soo-Byung Park, Woo-Sung Son, Yong-Il Kim
INTRODUCTION: The purpose of this study was to determine the arch form of the root apices of normally erupting teeth and then determine the differences in the location of the apex of impacted canines relative to normally erupting canines. In addition, we sought to determine whether the labiopalatal position of the impacted canines influences the position of the apices. METHODS: The study included 21 patients with unerupted canines that subsequently had a normal eruption, 21 patients with palatally impacted canines, 27 patients with labially impacted canines, and 17 patients with midalveolus impacted canines...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153164/growth-changes-in-the-anterior-and-middle-cranial-bases-assessed-with-cone-beam-computed-tomography-in-adolescents
#10
Mona Afrand, Heesoo Oh, Carlos Flores-Mir, Manuel O Lagravère-Vich
INTRODUCTION: Initially, cone-beam computed tomography images from dry skulls were used to 3 dimensionally evaluate intrarater and interrater reliabilities and accuracy of selected 3-dimensional landmarks located in the anterior and middle cranial bases. Thereafter, dimensional changes of the anterior and middle cranial bases with growth were evaluated by using the previously selected landmarks. METHODS: Cone-beam computed tomography images of 10 dry skulls were used to identify useful landmarks from different areas of the anterior and middle cranial bases based on their reliability and accuracy...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153163/perceptions-of-orthodontic-case-complexity-among-orthodontists-general-practitioners-orthodontic-residents-and-dental-students
#11
Elizabeth M Heath, Jeryl D English, Cleverick D Johnson, Elizabeth B Swearingen, Sercan Akyalcin
INTRODUCTION: Our aims were to assess the perceptions of orthodontic case complexity among orthodontists, general dentists, orthodontic residents, and dental students and to compare their perceptions with the American Board of Orthodontics Discrepancy Index (DI). METHODS: Orthodontists, general dentists, orthodontic residents, and dental students (n = 343) participated in a Web-based survey. Pretreatment orthodontic records of 29 cases with varying DI scores were obtained...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153162/association-between-3-dimensional-mandibular-morphology-and-condylar-movement-in-subjects-with-mandibular-asymmetry
#12
Michiyo Ikeda, Jun J Miyamoto, Jun-Ichi Takada, Keiji Moriyama
INTRODUCTION: The purpose of this study was to evaluate the hypothesis that 3-dimensional mandibular morphology is correlated with condylar movement in patients with mandibular asymmetry. METHODS: Subjects were classified into 2 groups (n = 25 each): mandibular asymmetry with a menton deviation greater than 4 mm and no mandibular asymmetry with a menton deviation less than 4 mm. Linear and volumetric measurements of 3-dimensional mandibular morphology were recorded using computed tomography...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153161/comparison-of-dental-arch-and-mandibular-maxillary-base-widths-between-true-and-pseudo-class-iii-malocclusions
#13
Burcin Akan, Ilknur Veli
INTRODUCTION: The aim of the study was to analyze the morphology of dental arches and skeletal mandibular-maxillary bases in untreated pseudo-Class III and true Class III malocclusions, by using posteroanterior radiographs and 3-dimensional digital models. METHODS: The records of 50 untreated patients (24 boys and 26 girls between 14 and 16 years of age) with Class III malocclusions were included in this study. They were divided into 2 groups according to their Class III malocclusion type: true or pseudo-Class III malocclusion...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153160/esthetic-perceptions-of-facial-silhouettes-after-treatment-with-a-mandibular-protraction-appliance
#14
Eliana Cássia Molina de Paula, Ana Cláudia de Castro Ferreira Conti, Danilo Furquim Siqueira, Danilo Pinelli Valarelli, Renata Rodrigues de Almeida-Pedrin
INTRODUCTION: In this retrospective study, we aimed to evaluate the effects on the facial silhouettes produced by a mandibular protraction appliance associated with corrective treatment in Class II patients. METHODS: The sample consisted of 54 (27 initial and 27 final) lateral radiographs from 27 patients. Of these patients, 14 were girls and 13 were boys, with a mean initial age of 12.27 years and a mean treatment period of 2.9 years. An album containing the silhouettes of the pretreatment and posttreatment profiles based on the lateral cephalograms of the patients was prepared...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153159/role-of-facial-attractiveness-in-patients-with-slight-to-borderline-treatment-need-according-to-the-aesthetic-component-of-the-index-of-orthodontic-treatment-need-as-judged-by-eye-tracking
#15
Elizabeth K Johnson, Henry W Fields, F Michael Beck, Allen R Firestone, Stephen F Rosenstiel
INTRODUCTION: Previous eye-tracking research has demonstrated that laypersons view the range of dental attractiveness levels differently depending on facial attractiveness levels. How the borderline levels of dental attractiveness are viewed has not been evaluated in the context of facial attractiveness and compared with those with near-ideal esthetics or those in definite need of orthodontic treatment according to the Aesthetic Component of the Index of Orthodontic Treatment Need scale...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153158/assessing-adhesive-remnant-removal-and-enamel-damage-with-ultraviolet-light-an-in-vitro-study
#16
Alexandre Antonio Ribeiro, Layene Figueiredo Almeida, Lidia Parsekian Martins, Renato Parsekian Martins
INTRODUCTION: Our objective was to assess the amounts of adhesive remnant and enamel damage when removing composite under conventional lighting and ultraviolet (UV) light. METHODS: Thirty-eight premolars were divided into 2 groups according to the lighting used for adhesive removal. A multifluted tungsten-carbide bur at low speed was used for this process in both groups. The UV group received conventional lighting associated with UV light, and the conventional group received conventional lighting only...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153157/does-orthodontic-debonding-lead-to-tooth-sensitivity-comparison-of-teeth-with-and-without-visible-enamel-microcracks
#17
Irma Dumbryte, Laura Linkeviciene, Tomas Linkevicius, Mangirdas Malinauskas
INTRODUCTION: Our aim was to assess the possible changes in sensitivity of teeth with and without visible enamel microcracks (EMCs) up to 1 week after the removal of metal brackets. METHODS: After debonding, 15 patients possessing teeth with visible EMCs and 15 subjects whose teeth were free of EMCs were enrolled in the study. For each experimental group, a control group was formed. The assessments of tooth sensitivity elicited by compressed air and cold testing were performed 5 times: just before debonding, immediately after debonding, and at 1, 3, and 7 days after debonding...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153156/overjet-reduction-in-relation-to-wear-time-with-the-van-beek-activator-combined-with-a-microsensor
#18
Ali S A Al-Kurwi, Annemieke Bos, Reinder B Kuitert
INTRODUCTION: The aim of this study was to use a microsensor to investigate the association among overjet reduction, treatment duration, and wear time of the van Beek activator. METHODS: The study sample comprised patients (n = 28) with a mean age of 11.60 (±1.25) years at start of treatment treated with the van Beek activator. The prescribed wear time was 12 hours per day. The evaluation period was limited to the first 3 appointments. The wear times during the 3 intervals were assessed...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153155/midpalatal-suture-density-ratio-a-novel-predictor-of-skeletal-response-to-rapid-maxillary-expansion
#19
Thorsten Grünheid, Chad E Larson, Brent E Larson
INTRODUCTION: During adolescence, increasing interdigitation of the midpalatal suture increases resistance to rapid maxillary expansion (RME); this decreases its skeletal effect. In this study, we aimed at determining whether a novel measure of midpalatal suture maturity, the midpalatal suture density ratio, can be used as a valid predictor of the skeletal response to RME. METHODS: The midpalatal suture density ratio, chronologic age, cervical vertebral maturation, and the stage of midpalatal suture maturation were assessed before treatment for 30 patients (ages, 12...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28153154/evaluation-of-invisalign-treatment-effectiveness-and-efficiency-compared-with-conventional-fixed-appliances-using-the-peer-assessment-rating-index
#20
Jiafeng Gu, Jack Shengyu Tang, Brennan Skulski, Henry W Fields, F Michael Beck, Allen R Firestone, Do-Gyoon Kim, Toru Deguchi
INTRODUCTION: The purpose of this retrospective case-control study was to compare the treatment effectiveness and efficiency of the Invisalign system with conventional fixed appliances in treating orthodontic patients with mild to moderate malocclusion in a graduate orthodontic clinic. METHODS: Using the peer assessment rating (PAR) index, we evaluated pretreatment and posttreatment records of 48 Invisalign patients and 48 fixed appliances patients. The 2 groups of patients were controlled for general characteristics and initial severity of malocclusion...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
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