9,247 results match your criteria American Journal Of Orthodontics And Dentofacial Orthopedics[Journal]


Dental, skeletal, and soft-tissue changes in adult orthodontic patients treated with premolar extraction and nonextraction: A cross-sectional study.

Am J Orthod Dentofacial Orthop 2022 May 12. Epub 2022 May 12.

Section of Dentistry, Department of Surgery, The Aga Khan University Hospital, Karachi, Pakistan. Electronic address:

Introduction: Various treatment modalities exist to improve and correct Class I malocclusion. This study evaluated the dental, skeletal, and soft-tissue changes in patients treated by premolar extraction (PME) and nonextraction.

Methods: A cross-sectional study was conducted, including subjects ideally planned for PME. Read More

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Dimensional and morphologic characteristics of unilateral impacted maxillary central incisors.

Am J Orthod Dentofacial Orthop 2022 May 11. Epub 2022 May 11.

Department of Orthodontics, School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.

Introduction: This cross-sectional study aimed to investigate the crown and root characteristics of impacted central incisors compared with spontaneously erupted contralateral incisors and the influence of etiologic and local factors on their dimensions.

Methods: Forty-five patients (22 boys, 23 girls) who underwent orthodontic treatment for unilateral impaction of maxillary central incisors were referred for cone-beam imaging. Dimensions of the impacted and contralateral incisors were assessed using Dolphin 3D software (Dolphin Imaging & Management Solutions, Chatsworth, Calif). Read More

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Asymmetry index for the photogrammetric assessment of facial asymmetry.

Am J Orthod Dentofacial Orthop 2022 May 10. Epub 2022 May 10.

Head and Neck Department, IRCCS Fondazione Policlinico "A. Gemelli," Università Cattolica del Sacro Cuore, Rome, Italy.

Introduction: Facial asymmetry is common and can be clinically related to dental malocclusion, facial bone development, muscular imbalance, and soft tissues thickness, which should be assessed during diagnosis to choose proper treatment options. This study aimed to quantify the amount of symmetry/asymmetry in previously defined symmetrical and asymmetrical subjects, analyzing full-face 3-dimensional images.

Methods: Seventy-six orthodontic patients' 3-dimensional face images were obtained with the 3dMD Trio-system (Atlanta, Ga) and processed with the Geomagic Control (64-bit; 3D Systems, Rock Hill, SC) software. Read More

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The outcome of oral appliance therapy on position-dependent obstructive sleep apnea: A multicenter randomized controlled trial.

Am J Orthod Dentofacial Orthop 2022 May 10. Epub 2022 May 10.

Region Vastmanland - Uppsala University Centre for Clinical Research, Vastmanland Hospital, Västerås, Sweden.

Introduction: This multicenter trial on patients with obstructive sleep apnea (OSA) treated with an oral appliance aimed to determine the effect of sleeping positions.

Methods: A cohort of 314 patients with OSA were enrolled and evaluated at 8 weeks and 1 year, focusing on treatment effects. At baseline and the 2 follow-ups, new polygraphic registration comparing the proportion of treatment responders without position-dependent OSA (non-position-dependent OSA [non-POSA]) and with POSA was used. Read More

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Indirect vs direct bonding of mandibular fixed retainers in orthodontic patients: Comparison of retainer failures and posttreatment stability. A 5-year follow-up of a single-center randomized controlled trial.

Am J Orthod Dentofacial Orthop 2022 May 9. Epub 2022 May 9.

Melbourne Dental School, Faculty of Medicine, Dentistry, and Health Sciences, University of Melbourne, Melbourne, Australia.

Introduction: This 2-arm parallel trial aimed to assess the number of failures of mandibular fixed retainers bonded with direct and indirect bonding methods at a 5-year follow-up and investigate the stability of intercanine and interpremolar distances.

Methods: Consecutive patients from the clinic of the University of Geneva (Switzerland) were randomly allocated to either direct or indirect bonding of a mandibular fixed retainer at the end of orthodontic treatment. Inclusion criteria included the presence of all mandibular incisors and canines; and the absence of active caries, restorations, fractures, or periodontal disease of these teeth. Read More

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Geometric morphometric analysis of the pharyngeal airway during treatment of Class III malocclusion.

Am J Orthod Dentofacial Orthop 2022 May 7. Epub 2022 May 7.

Department of Orthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.

Introduction: The pharyngeal airway is important during diagnosis and treatment planning in orthodontics. This study aimed to compare the changes in the shape of the pharyngeal airway in patients with Class III malocclusion treated with a facemask (FM) with a removable maxillary appliance and modified tandem traction bow appliance (MTTBA).

Methods: This study consisted of pretreatment and posttreatment lateral cephalograms of 35 subjects with skeletal and dental Class III malocclusion. Read More

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Comparative investigation of fully customized lingual bracket systems and conventional labial appliances: Analysis of forces/moments and final tooth positions.

Am J Orthod Dentofacial Orthop 2022 May 7. Epub 2022 May 7.

Department of Oral Medical Technology, School of Dentistry, Faculty of Medicine, University of Bonn, Bonn, Germany.

Introduction: The assessment of forces and moments generated by fully customized lingual appliances and their effectiveness in tooth movement were compared with conventional labial bracket systems, applied to a specific malocclusion model.

Methods: Two fully customized lingual appliances (Incognito [3M Unitek, Monrovia, Calif] and WiN [DW Lingual Systems, Bad Essen, Germany]) and 2 labial bracket systems (Discovery classic and Discovery smart [Dentaurum, Ispringen, Germany]) were examined with nickel-titanium wires of different cross-sections (0.012, 0. Read More

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The impact of mini-implant hybrid hyrax maxillary expansion on pulp blood flow and sensibility in healthy and traumatized teeth: A prospective study.

Am J Orthod Dentofacial Orthop 2022 May 7. Epub 2022 May 7.

From the University of Western Australia Dental School, the University of Western Australia, Nedlands, Western Australia, Australia. Electronic address:

Introduction: We aimed to assess pulp blood flow (PBF) and pulp sensibility changes in healthy and traumatized teeth undergoing maxillary expansion with a mini-implant hybrid hyrax appliance.

Methods: Forty-five patients requiring maxillary expansion either with mini-implant supported hyrax expander (MARME) or tooth-borne hyrax expander (RME) had the pulp status of their maxillary anterior teeth assessed using laser Doppler flowmetry, electric pulp testing, and thermal testing (carbon dioxide snow). The study cohort was divided into 4 groups on the basis of expansion appliance (MARME or RME) and trauma experience (trauma or nontrauma). Read More

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Nonsurgical maxillary orthopedic protraction treatment for an adult patient with hyperdivergent facial morphology, Class III malocclusion, and bilateral crossbite.

Am J Orthod Dentofacial Orthop 2022 May 6. Epub 2022 May 6.

Section of Orthodontics, School of Dentistry, Center for Health Science, University of California Los Angeles, Los Angeles, Calif. Electronic address:

Optimal treatment for an adult patient with hyperdivergent facial morphology, Class III malocclusion, bilateral posterior crossbite, and skeletal disharmony usually requires comprehensive orthodontics combined with extractions, orthognathic surgery, or both. However, treatment becomes more challenging when the patient rejects surgery because of fear or cost. This case report presents the orthodontic treatment of a 24-year-old woman with a Class III malocclusion and bilateral posterior crossbite without surgery using orthopedic and comprehensive orthodontic approaches. Read More

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Stability of first and second premolars extraction space closure.

Am J Orthod Dentofacial Orthop 2022 May 6. Epub 2022 May 6.

Department of Orthodontics, Bauru Dental School and Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, São Paulo, Brazil. Electronic address:

Introduction: Premolars are the teeth most often extracted to provide space to correct crowding, excessive dental and/or labial protrusion, and to compensate for the sagittal discrepancy. After treatment, the extraction spaces have to remain closed. Nevertheless, several studies have shown a tendency for some relapse even in patients finished with an adequate occlusion. Read More

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Eulogy for Ze'ev Davidovitch.

Authors:
Neal C Murphy

Am J Orthod Dentofacial Orthop 2022 Apr 30. Epub 2022 Apr 30.

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The relationship between local alveolar bone housing and size of canine in maxillary canine-lateral incisor transposition: A retrospective cone-beam computed tomography-based study.

Am J Orthod Dentofacial Orthop 2022 Apr 30. Epub 2022 Apr 30.

Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, China. Electronic address:

Introduction: This study aimed to use 3-dimensional data to analyze the relationship between local alveolar bone housing and canine size in maxillary canine-lateral incisor transposition.

Methods: Cone-beam computed tomography study data from 31 patients with maxillary canine-lateral incisor transposition were imported into Dolphin Imaging software (version 11.8; Dolphin Imaging and Management Solutions, Chatsworth, Calif) for measurement. Read More

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Efficacy of the systemic co-administration of vitamin D3 in reversing the inhibitory effects of sodium alendronate on orthodontic tooth movement: A preliminary experimental animal study.

Am J Orthod Dentofacial Orthop 2022 Apr 29. Epub 2022 Apr 29.

Private practice, Tehran, Iran.

Introduction: Bisphosphonates can severely slow down orthodontic tooth movement (OTM) by reducing bone turnover. This calls for materials and methods to reverse or neutralize their effects on OTM. We propose systemic vitamin D3 (D3) for this purpose. Read More

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TEMPORARY REMOVAL: A method to isolate forces and moments applied to teeth: An in vitro experiment.

Am J Orthod Dentofacial Orthop 2022 04 28. Epub 2022 Apr 28.

Founder and Inventor, BRIUS Technologies Inc, Carrollton, Tex.

The publisher regrets that this article has been temporarily removed. A replacement will appear as soon as possible in which the reason for the removal of the article will be specified, or the article will be reinstated. The full Elsevier Policy on Article Withdrawal can be found at https://www. Read More

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Effect of a mouth rinse and a high-fluoride toothpaste on caries incidence in orthodontic patients: A randomized controlled trial.

Am J Orthod Dentofacial Orthop 2022 Apr 28. Epub 2022 Apr 28.

Department of Orthodontics, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Introduction: The objective was to evaluate the effect of a fluoride mouth rinse and a high-fluoride toothpaste on caries incidence in patients undergoing orthodontic treatment with fixed appliances.

Methods: In this 3-armed, parallel-group, randomized controlled trial, patients referred to the Specialist Clinic of Orthodontics, Mölndal, Sweden, were randomly allocated to 1 of the 3 groups. (1) Fluoride mouth rinse (FMR) group: 0. Read More

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Differences in craniofacial morphology between platybasic and nonplatybasic patients with velopharyngeal dysfunction and control subjects.

Am J Orthod Dentofacial Orthop 2022 Apr 28. Epub 2022 Apr 28.

Department of Otolaryngology-Head and Neck Surgery, Meir Medical Center, Kfar Saba, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.

Introduction: This study aimed to identify the characteristics of cranial-base morphology in platybasic and nonplatybasic patients with palatal anomalies and velopharyngeal dysfunction (VPD) compared with control subjects to investigate structural factors related to craniofacial morphology that affect the nasopharyngeal space and may influence velopharyngeal function, and to develop precise treatments for specific patients with VPD.

Methods: Three hundred eighty-six patients with VPD and various palatal anomalies were studied retrospectively. The control group included 126 healthy patients with normal speech. Read More

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Effect of platelet-rich plasma on the rate of orthodontic tooth movement.

Am J Orthod Dentofacial Orthop 2022 Apr 23. Epub 2022 Apr 23.

Department of Orthodontics and Dentofacial Orthopedics, Dental College and Hospital, Bharati Vidyapeeth Deemed To Be University, Pune, Maharashtra, India. Electronic address:

Introduction: This study aimed to evaluate the effect of platelet-rich plasma (PRP) on the rate of orthodontic tooth movement (OTM) during en-masse anterior retraction.

Methods: Twenty adult patients with Angles Class I bimaxillary protrusion or crowding requiring first premolar extraction for routine orthodontic treatment were divided into control and experimental groups. The control group did not receive PRP, whereas the experimental group received PRP in the alveolar mucosa of the maxillary 6 anterior teeth just before starting en-masse retraction. Read More

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Assessing the performance of diagnostic test accuracy measures.

Am J Orthod Dentofacial Orthop 2022 05;161(5):748-751

Department of Primary Education, School of Education, University of Ioannina, Ioannina, Greece; Paris Descartes University, Sorbonne Paris Cité, Faculté de Médecine, Paris, France.

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Ingress and egress.

Authors:
Laurance Jerrold

Am J Orthod Dentofacial Orthop 2022 05;161(5):746-747

Associate Editor for Litigation and Legislation, Private practice, Woodbury, NY.

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Automated assessment of mandibular shape asymmetry in 3-dimensions.

Am J Orthod Dentofacial Orthop 2022 May;161(5):698-707

Department of Orthodontics, Peking University School and Hospital of Stomatology, and National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China. Electronic address:

Introduction: This study aimed to develop an automatic pipeline for analyzing mandibular shape asymmetry in 3-dimensions.

Methods: Forty patients with skeletal Class I pattern and 80 patients with skeletal Class III pattern were used. The mandible was automatically segmented from the cone-beam computed tomography images using a U-net deep learning network. Read More

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What's going on?

Authors:
Peter M Greco

Am J Orthod Dentofacial Orthop 2022 05;161(5):618

Philadelphia, Pa.

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Stability is determined when the patient stops wearing retainers.

Authors:
Dan Counihan

Am J Orthod Dentofacial Orthop 2022 05;161(5):615-616

Tralee, Ireland.

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Lifetime Achievement Award in Orthodontic Research, 2022.

Authors:
Rolf G Behrents

Am J Orthod Dentofacial Orthop 2022 05;161(5):611-613

American Association of Orthodontists, St Louis, Mo. Electronic address:

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Perception and analysis of lip-line canting by different populations.

Am J Orthod Dentofacial Orthop 2022 Apr 18. Epub 2022 Apr 18.

Department of Stomatology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China. Electronic address:

Introduction: This study aimed to provide a valuable reference for the precise diagnosis and treatment of lip-line canting (LLC) in an orthodontic clinic, determine the average observed LLC that would need treatment, and compare the differences in different populations.

Methods: We took frontal photographs of an adult female with rough facial symmetry and processed them into fully symmetrical frontal images using Photoshop (Adobe Systems, San Jose, Calif). After that, the lip line was rotated clockwise with a gradient of 1° to obtain 8 different pictures. Read More

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Evaluation of maxillary canine root and maxillary bone thickness and density in patients with displaced maxillary canines: A cone-beam tomography study.

Am J Orthod Dentofacial Orthop 2022 Apr 13. Epub 2022 Apr 13.

Department of Oral Medicine and Oral Surgery, Faculty of Dentistry, Jordan University of Science and Technology, Irbid, Jordan.

Introduction: This study investigated lateral incisor and canine morphology and dimensions, maxillary bone density, and volume in subjects with displaced maxillary canines.

Methods: Cone-beam computed tomography images for 134 palatally displaced canines (PDCs), 57 buccally displaced canines (BDCs), and 87 nondisplaced canines (NDCs) were analyzed. Canine and lateral incisor dimensions, alveolar bone dimensions, and maxillary bone volume and density were measured. Read More

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Evaluation of WALA ridge in different facial patterns: A cone-beam computed tomography study.

Am J Orthod Dentofacial Orthop 2022 Apr 13. Epub 2022 Apr 13.

São Leopoldo Mandic College, Department of Orthodontics, Brasília, Federal District, Brazil.

Introduction: This retrospective study evaluated the buccal bone thickness in mandibular canine, premolar, and molar areas, using as a reference the WALA ridge in patients with various facial patterns.

Methods: The sample comprised 51 cone-beam computerized tomography scans of subjects divided into 3 groups according to the facial pattern, determined by the Ricketts' VERT index, brachyfacial (group 1), mesofacial (group 2), and dolichofacial (group 3). A quantitative analysis of the buccal bone thickness was made in cone-beam computerized tomography scans in the region of the mandibular dental arch corresponding to the WALA ridge. Read More

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Assessment of soft-tissue vs hard-tissue changes after isolated functional genioplasty.

Am J Orthod Dentofacial Orthop 2022 Apr 12. Epub 2022 Apr 12.

Department of Oral Health, Orthodontic Section, Faculty of Dental Medicine, University of Montreal, Quebec, Canada.

Introduction: This study aimed to determine the vertical and horizontal soft-tissue vs hard-tissue changes after isolated functional genioplasty and to revisit hard-tissue remodeling at the symphysis.

Methods: Seventy-five patients who underwent genioplasty as an isolated procedure at the end of their orthodontic treatment were divided into 3 groups on the basis of their age at surgery: <15 years (group 1), 15-18 years (group 2), and ≥19 years (group 3). Patients were evaluated at 3 time points: immediately before surgery (T1), immediately after surgery (T2), and 2 years after surgery (T3). Read More

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