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American Journal of Orthodontics and Dentofacial Orthopedics

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https://www.readbyqxmd.com/read/28257747/directed-acyclic-graphs-a-tool-to-identify-confounders-in-orthodontic-research-part-ii
#1
EDITORIAL
Thikriat S Al-Jewair, Nikolaos Pandis, Yu-Kang Tu
No abstract text is available yet for this article.
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257746/cloudy
#2
EDITORIAL
Laurance Jerrold
No abstract text is available yet for this article.
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257745/accuracy-and-head-positioning-effects-on-measurements-of-anterior-tooth-length-using-3-dimensional-and-conventional-dental-panoramic-radiography
#3
Noriyuki Kitai, Manabu Murabayashi, Hiroshi Sugimoto, Atsushi Fujiwara, Wakako Tome, Akitoshi Katsumata
INTRODUCTION: The purposes of this study were to examine the accuracy and the head positioning effects on measurements of anterior tooth length using 3-dimensional (3D) and conventional dental panoramic radiography and to investigate whether 3D panoramic radiography is suitable for the evaluation of anterior tooth length. METHODS: A simulated human head was radiographed at 4, 8, and 12 mm displaced positions, and at 5°, 10°, and 15° tilted positions from the standard head position using 3D and conventional panoramic radiography, and also using cone-beam computed tomography...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257744/twenty-year-follow-up-of-a-familial-case-of-pth1r-associated-primary-failure-of-tooth-eruption
#4
Cláudia Misue Kanno, José Américo de Oliveira, José Fernando Garcia, Helmut Roth, Bernhard H F Weber
INTRODUCTION: Nonsyndromic primary failure of eruption (PFE) is a rare autosomal dominant disorder of dental eruption with no obvious dental or soft tissue interference. The purposes of this study were to genetically and clinically characterize a family with many members affected by PFE and to describe the natural evolution of the disorder. METHODS: Three generations of a family with 18 members, 10 of them clinically affected by PFE, were evaluated periodically during 20 years of clinical follow-up...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257743/camouflage-of-a-high-angle-skeletal-class-ii-open-bite-malocclusion-in-an-adult-after-mini-implant-failure-during-treatment
#5
Eduardo Franzotti Sant'Anna, Amanda Carneiro da Cunha, Daniel Paludo Brunetto, Claudia Franzotti Sant'Anna
The treatment of skeletal anterior open-bite malocclusion requires complex orthodontic planning that considers its multifactorial etiology, treatment limitations, and high relapse rates. This case report illustrates a successful treatment approach for a skeletal high-angle Class II malocclusion in an adult with a severe open bite. The treatment consisted of a high-pull headgear therapy after mini-implants failure during fixed orthodontic therapy. Adequate esthetics and function were achieved. Despite its low probability, the unexpected event of mini-implant loosening during complex treatments should be considered...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257742/orthodontic-uprighting-of-a-horizontally-impacted-third-molar-and-protraction-of-mandibular-second-and-third-molars-into-the-missing-first-molar-space-for-a-patient-with-posterior-crossbites
#6
Un-Bong Baik, Myung-Rae Kim, Kyu-Ho Yoon, Yoon-Ah Kook, Jae Hyun Park
A 22-year-old woman came with a unilateral missing mandibular first molar and buccal crossbite. The open space was closed by protraction of the mandibular left second molar and uprighting and protraction of the horizontally impacted third molar using temporary skeletal anchorage devices, and her buccal crossbite was corrected with modified palatal and lingual appliances. The total active treatment time was 36 months. Posttreatment records after 9 months showed excellent results with a stable occlusion.
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257741/timing-of-orthognathic-surgery-on-the-changes-of-oral-health-related-quality-of-life-in-chinese-orthognathic-surgery-patients
#7
Jianfeng Wang, Weiting Chen, Zhenyu Ni, MinLing Zheng, Xiaozhang Liang, Yuan Zheng, Yu Zhou
INTRODUCTION: Although the association between orthognathic surgery and oral health-related quality of life (OHRQoL) has been explored, few studies have been carried out to describe the influence of surgery type on perceived OHRQoL. The aim of this study was to evaluate the difference of OHRQoL between a surgery-first approach and an orthodontics-first approach, using the 14-item Oral Health Impact Profile questionnaire (Chinese version). METHODS: Fifty adult Chinese orthodontic patients who received either surgery-first or orthodontics-first treatment completed 5 distinct sections of the questionnaire...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257740/perception-of-changes-in-soft-tissue-profile-after-herbst-appliance-treatment-of-class-ii-division-1-malocclusion
#8
Marcus Vinicius Neiva Nunes do Rego, Elizabeth Ferreira Martinez, Rogério Menezes Ibiapina Coelho, Leanne Matias Portela Leal, Guilherme Thiesen
INTRODUCTION: In this study, we sought to assess the perception of changes in soft-tissue profile after Herbst appliance treatment by comparing facial profile silhouettes before treatment, immediately after treatment, and 2 years after treatment, as examined by orthodontists, general dentists, and laypersons. METHODS: The sample comprised 21 patients (mean age, 9.5 ± 0.5 years), who were treated with the Herbst appliance for a mean period of 12 (±1.1) months...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257739/candidate-gene-analyses-of-3-dimensional-dentoalveolar-phenotypes-in-subjects-with-malocclusion
#9
Cole A Weaver, Steven F Miller, Clarissa S G da Fontoura, George L Wehby, Brad A Amendt, Nathan E Holton, Veeratrishul Allareddy, Thomas E Southard, Lina M Moreno Uribe
INTRODUCTION: Genetic studies of malocclusion etiology have identified 4 deleterious mutations in genes DUSP6,ARHGAP21, FGF23, and ADAMTS1 in familial Class III cases. Although these variants may have large impacts on Class III phenotypic expression, their low frequency (<1%) makes them unlikely to explain most malocclusions. Thus, much of the genetic variation underlying the dentofacial phenotypic variation associated with malocclusion remains unknown. In this study, we evaluated associations between common genetic variations in craniofacial candidate genes and 3-dimensional dentoalveolar phenotypes in patients with malocclusion...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257738/atorvastatin-induced-osteoclast-inhibition-reduces-orthodontic-relapse
#10
Gabriel Schmidt Dolci, Luis Valmor Portela, Diogo Onofre de Souza, Anna Christina Medeiros Fossati
INTRODUCTION: The statin class of drugs enhances osteogenesis and suppresses bone resorption, which could be a plausible biologic mechanism for mitigation of orthodontic relapse. We aimed to determine whether atorvastatin (ATV) might affect orthodontic relapse and osteoclastogenesis by modulating expression of RANKL and osteoprotegerin (OPG), crucial molecules involved in bone turnover. Furthermore, we analyzed the adverse effects of ATV on femur turnover and endochondral ossification...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257737/evaluation-of-enamel-surface-roughness-after-orthodontic-bracket-debonding-with-atomic-force-microscopy
#11
Shadi Mohebi, Hassan-Ali Shafiee, Nazila Ameli
INTRODUCTION: Achieving a smooth enamel surface after orthodontic bracket debonding is imperative. In this study, we sought to compare the enamel surface roughness values after orthodontic bracket debonding and resin removal using a white stone bur, a tungsten carbide bur, and a tungsten carbide bur under loupe magnification. METHODS: Thirty sound premolars were randomly divided into 3 groups, and their buccal surfaces were subjected to atomic force microscopy to measure initial surface roughness...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257736/associations-among-sella-turcica-bridging-atlas-arcuate-foramen-ponticulus-posticus-development-atlas-posterior-arch-deficiency-and-the-occurrence-of-palatally-displaced-canine-impaction
#12
Mona Haji Ghadimi, Fariborz Amini, Shayesteh Hamedi, Vahid Rakhshan
INTRODUCTION: Head and neck skeletal anomalies or normal variants might predict the occurrence of palatally displaced impacted maxillary canines. Despite their clinical importance, studies in this regard are rare, especially when it comes to vertebral anomalies. METHODS: This case-control study was performed on cephalographs of 35 orthodontic patients (11 male, 24 female) with palatally displaced canines (PDC) and 75 patients without them (29 male, 46 female). PDC were diagnosed on panoramic and lateral cephalographs and from clinical reports...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257735/force-degradation-of-orthodontic-latex-elastics-an-in-vivo-study
#13
Sadeq M Adel Qodcieh, Susan N Al-Khateeb, Ziad W Jaradat, Elham S J Abu Alhaija
INTRODUCTION: Our objectives were to assess the force degradation of orthodontic latex elastics over 48 hours in vivo and to study the relationship between the amount of mouth opening and the degree of force decay. METHODS: Fifty-two orthodontic patients wearing fixed appliances using Class II elastics were asked to wear premeasured-force 3/16-in heavy and medium intermaxillary elastics. The force amounts were measured and compared at different time intervals...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257734/safe-zones-for-miniscrews-in-maxillary-dentition-distalization-assessed-with-cone-beam-computed-tomography
#14
Haibo Liu, Xiaoxue Wu, Lei Yang, Yin Ding
INTRODUCTION: The purpose of this study was to assess the anatomic structure of the buccal alveolar bone in the infrazygomatic crest region with cone-beam computed tomography to locate safe zones for miniscrews in maxillary dentition distalization. METHODS: The buccal alveolar bone was analyzed in 3 regions of 60 patients: between the maxillary second premolar and first molar (U5-U6), between the mesiodistal roots of the first molar (U6), and between the maxillary first and second molars (U6-U7)...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257733/effects-of-orthodontic-appliances-on-the-diagnostic-quality-of-magnetic-resonance-images-of-the-head
#15
Dzmitry Zhylich, Pradeep Krishnan, Prakash Muthusami, Tammy Rayner, Manohar Shroff, Andrea Doria, Bryan Tompson, Wendy Lou, Sunjay Suri
INTRODUCTION: The influence of 4 commonly used fixed orthodontic appliances on artifact formation and diagnostic quality of magnetic resonance (MR) images of the head produced by a 3-T MR scanner was studied. METHODS: Stainless steel brackets, ceramic brackets, combination of ceramic brackets and steel molar tubes, and multistranded steel mandibular lingual retainers were embedded into custom-made trays for each of 10 adult subjects. Head MR scans of 9 regions were acquired for each subject wearing these trays...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257732/bisphenol-a-release-from-orthodontic-adhesives-measured-in%C3%A2-vitro-and-in%C3%A2-vivo-with-gas-chromatography
#16
Marília Rodrigues Moreira, Leonardo Gontijo Matos, Israel Donizeti de Souza, Tamires Amabile Valim Brigante, Maria Eugênia Costa Queiroz, Fábio Lourenço Romano, Paulo Nelson-Filho, Mírian Aiko Nakane Matsumoto
INTRODUCTION: The objectives of this study were to quantify in vitro the Bisphenol A (BPA) release from 5 orthodontic composites and to assess in vivo the BPA level in patients' saliva and urine after bracket bonding with an orthodontic adhesive system. METHODS: For the in-vitro portion of this study, 5 orthodontic composites were evaluated: Eagle Spectrum (American Orthodontics, Sheboygan, Wis), Enlight (Ormco, Orange, Calif), Light Bond (Reliance Orthodontic Products, Itasca, Ill), Mono Lok II (Rocky Mountain Orthodontics, Denver, Colo), and Transbond XT (3M Unitek, Monrovia, Calif)...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257731/comparative-evaluation-of-salivary-bisphenol-a-levels-in-patients-wearing-vacuum-formed-and-hawley-retainers-an-in-vivo-study
#17
Akila Srinivasan Raghavan, Haritha Pottipalli Sathyanarayana, Vignesh Kailasam, Sridevi Padmanabhan
INTRODUCTION: The aims of the study were to evaluate and compare the bisphenol A (BPA) levels in saliva in patients using vacuum-formed retainers or Hawley retainers. METHODS: Forty-five patients who had completed their fixed orthodontic treatment and were entering the retention phase were randomly allocated into 1 of 3 groups: vacuum-formed retainer, Hawley retainer fabricated by heat cure, and Hawley retainer fabricated by chemical cure. Saliva samples were collected immediately before placement, within 1 hour after placement, 1 week and 1 month after placement...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257730/evaluation-of-american-board-of-orthodontics-certification-protocols-in-postgraduate-orthodontic-programs-in-the-united-states-and-canada
#18
Jae Hyun Park, Raphael R Putrus, Dawn P Pruzansky, John Grubb
INTRODUCTION: The objective of this study was to identify the board certification protocols that hospital and university-based postgraduate orthodontic programs have in place to prepare residents for the American Board of Orthodontics (ABO) certification examination. METHODS: An electronic survey was sent to the program directors of each of the 72 postgraduate orthodontic programs in the United States and Canada. The survey consisted of 49 questions about demographics, resident case assignment protocols, and ABO examination preparation methods...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257729/extraction-frequencies-at-a-university-orthodontic-clinic-in-the-21st-century-demographic-and-diagnostic-factors-affecting-the-likelihood-of-extraction
#19
Tate H Jackson, Camille Guez, Feng-Chang Lin, William R Proffit, Ching-Chang Ko
INTRODUCTION: The aims of this study were to report contemporary orthodontic extraction frequencies at a university center and to investigate what patient-related factors might influence the likelihood of extraction. METHODS: The records of 2184 consecutive patients treated at the University of North Carolina from 2000 to 2011 were analyzed. Year-by-year rates for overall orthodontic extractions and for extraction of 4 first premolars were calculated. Logistic regression, adjusting for all recorded patient risk factors for extraction, was used to examine both the changes in extraction frequencies over time and the influence of individual patient factors on the odds of extraction...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28257728/effectiveness-of-orthodontic-miniscrew-implants-in-anchorage-reinforcement-during-en-masse-retraction-a-systematic-review-and-meta-analysis
#20
REVIEW
Joanna Antoszewska-Smith, Michał Sarul, Jan Łyczek, Tomasz Konopka, Beata Kawala
INTRODUCTION: The aim of this systematic review was to compare the effectiveness of orthodontic miniscrew implants-temporary intraoral skeletal anchorage devices (TISADs)-in anchorage reinforcement during en-masse retraction in relation to conventional methods of anchorage. METHODS: A search of PubMed, Embase, Cochrane Central Register of Controlled Trials, and Web of Science was performed. The keywords were orthodontic, mini-implants, miniscrews, miniplates, and temporary anchorage device...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
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