American Journal of Orthodontics and Dentofacial Orthopedics American Journal of Orthodontics and Dentofacial Orthopedics RSS feed.
- Identifying factors that impact general dentists’ referrals to orthodontistsby Daniel S. Lee, Taylor Sulkowski, Clare Bocklage, Sylvia A. Frazier-Bowers, Chris Wiesen, Paul Mihas, Laura A. Jacox on 16/09/2021 at 12:00 am
Referrals from general dentists are a significant source of orthodontic patients, but our knowledge of factors guiding referral decisions predates recent marketplace trends of direct-to-consumer products and broad digitization. To provide orthodontists with current, nationwide data on referral values and communication preferences, a mixed-methods study was conducted.
- Voice changes after surgically assisted rapid maxillary expansionby Onur Erdem Erdur, Berza Sen Yilmaz on 16/09/2021 at 12:00 am
This study aimed to investigate voice changes in patients who had surgically assisted rapid maxillary expansion (SARME).
- Hypodontia and its impact on a young person's quality of life, esthetics, and self-esteemby Ama Johal, Yan Huang, Simon Toledano on 16/09/2021 at 12:00 am
The impact of hypodontia on quality of life is a relatively unexplored area. The limited research shows that the issues of importance for people with hypodontia can vary from those of patients undergoing routine orthodontic treatment. This research aimed to use generic and condition-specific scales to evaluate the impact of hypodontia on a young person's oral health-related quality of life, self-esteem, and aesthetics.
- A machine learning approach to determine the prognosis of patients with Class III malocclusionby Pegah Khosravi-Kamrani, Xingye Qiao, Gustavo Zanardi, Christopher A. Wiesen, Gary Slade, Sylvia A. Frazier-Bowers on 14/09/2021 at 12:00 am
The conundrum of determining how to treat a patient with Class III malocclusion is significant, creating a burden on the patient and challenging the orthodontist. The objective of this study was to employ a statistical prediction model derived from our previous cephalometric data on 5 predominant subtypes of skeletal Class III malocclusion to test the hypothesis that Class III subtypes are associated with treatment modalities (eg, surgical vs nonsurgical) and treatment outcome.
- Facial profile study using 3-dimensional photographs to assess esthetic preferences of Hong Kong Chinese orthognathic patients and laypersonsby Su Keng Tan, Wai Keung Leung, Alexander T.H. Tang, Roger A. Zwahlen on 13/09/2021 at 12:00 am
This study was conducted to investigate and compare esthetic perceptions of different facial profiles among Hong Kong Chinese laypersons and patients scheduled for orthognathic treatment.
- Dentoskeletal comparison of miniscrew-anchored maxillary protraction with hybrid and conventional hyrax expanders: A randomized clinical trialby Felicia Miranda, José Carlos da Cunha Bastos, Alexandre Magno dos Santos, Guilherme Janson, José Roberto Pereira Lauris, Daniela Garib on 09/09/2021 at 12:00 am
This randomized clinical trial aimed to compare the skeletal and dental effects of miniscrew-anchored maxillary protraction (MAMP) using hybrid hyrax (HH) and conventional hyrax (CH) expanders in growing patients with Class III malocclusion.
- Gingival blood flow before, during, and after clenching, measured by laser Doppler blood flowmeter: A pilot studyby Sayaka Komaki, Hiroya Ozaki, Shun-suke Takahashi, Satoko Wada-Takahashi, Kenji Fushima on 08/09/2021 at 12:00 am
This study aimed to investigate the effects of the strong occlusal force on the hemodynamics of gingival microcirculation.
- Is YouTube an adequate patient resource about orthodontic retention? A cross-sectional analysis of content and qualityby Yağmur Lena Sezici, Meltem Gediz, Furkan Dindaroğlu on 08/09/2021 at 12:00 am
The study aimed to evaluate the content and quality of information offered by YouTube for patients seeking information related to orthodontic retainers.
- Educational debt and the gender gap: Understanding factors influencing orthodontists’ career decisionsby Catherine Campbell Worthington, Paul Mihas, Clare Bocklage, Sylvia A. Frazier-Bowers, Feng-Chang Lin, Ching-Chang Ko, Laura Anne Jacox on 06/09/2021 at 12:00 am
Orthodontic residents face challenges unparalleled to their predecessors, including competitive marketplaces, rising debt burdens, and changing demographics that have contributed to the shift in initial career choice from owner to employee. We aim to understand factors important to orthodontists at different career stages and the impact on job satisfaction through a sequential mixed methodology study.
- Occlusal changes in orthodontically treated subjects 40 years after treatment and comparison with untreated control subjectsby Karina Maria Salvatore Freitas, Camila Massaro, Felicia Miranda, Marcos Roberto de Freitas, Guilherme Janson, Daniela Garib on 04/09/2021 at 12:00 am
The objective of this study was to compare the aging changes of the dental arches in orthodontically treated and untreated subjects after a 4-decade follow-up period.
- The effects of dehiscence and fenestration before orthodontic treatment on external apical root resorption in maxillary incisorsby Chang Cha, Desheng Huang, Qichao Kang, Manman Yin, Xiulin Yan on 01/09/2021 at 12:00 am
The objective of this study was to investigate the effects of dehiscence and fenestration on external apical root resorption (EARR) in maxillary incisors.
- An in vitro evaluation of orthodontic aligner biomechanics around the maxillary archby Harsimrat Kaur, Jason Truong, Giseon Heo, James K. Mah, Paul W. Major, Dan L. Romanyk on 01/09/2021 at 12:00 am
The objective of this study was to evaluate the forces and moments exerted by orthodontic aligners on 3 different displaced maxillary teeth and their adjacent supporting teeth.
- Dental changes in humans with untreated normal occlusion throughout lifetime: A systematic scoping reviewby Amit Arvind Rajbhoj, Prafull Parchake, Giacomo Begnoni, Guy Willems, María Cadenas de Llano-Pérula on 01/09/2021 at 12:00 am
Understanding age-related changes in normal dental occlusion is crucial for orthodontic treatment, planning, and retention, especially considering the increasing demand from adult patients. This review aimed to systematically perform a scoping literature review regarding age-related dental changes in untreated normal occlusion subjects.
- Taking control of our workflow and databy Christopher Riolo, James Vaden on 01/09/2021 at 12:00 am
Through experience teaching and interacting with orthodontic residents, we have noticed that attitudes toward organized dentistry in general and the American Association of Orthodontics (AAO) in particular have changed over time. Many younger orthodontists do not perceive a positive cost-benefit analysis with respect to AAO membership. Some perceive greater value in an orthodontic Facebook group than membership in the AAO. Although we do not like this paradigm, we must acknowledge it exists. Part of the problem is almost certainly a lack of effective communication with these orthodontists about the value of AAO membership.
- Missing participant outcome data in meta-analysis. Part Iby Loukia M. Spineli, Nikolaos Pandis on 01/09/2021 at 12:00 am
Missing participant outcome data (MOD) are ubiquitous in clinical trials and may threaten the validity of the results. The risk of bias associated with MOD is carried over to the meta-analysis by including clinical trials with participant losses.1 In this section, we discuss MOD, and we present common statistical methods to address MOD in a pairwise meta-analysis. Despite their conceptual and statistical shortcomings, these methods have prevailed in the published systematic reviews for their simplicity.
- Silence is goldenby Peter M. Greco on 01/09/2021 at 12:00 am
Your participation in your alma mater's admission committee has been a way for you to give back to your specialty and the institution that accepted you, educated you, and gave you the opportunity to remain involved in the academic arena. The admissions process might be an imperfect one, but it's a time-honored attempt to identify those who will flourish and hopefully contribute to our specialty. But now and then, an applicant who is not as deserving as the rest of the class slips into the ranks.
- Is there a “write” way?by Laurance Jerrold on 01/09/2021 at 12:00 am
I know I’m gonna start some fights here, so let’s get to it. When you obtain a patient’s informed consent, does it have to be in writing? Apparently not in Nebraska. Now those of you who know me can attest to the fact that I’m way too lazy to look up what the law is in each state, so before going any further, here’s what you need to do. Call your malpractice carrier (sorry, American Association of Orthodontists Insurance Company, but you’re going to get a lot of phone calls) or speak to a local health care attorney in your state and find out if you do or if you don’t.
- Directory: AAO Officers and Organizationson 01/09/2021 at 12:00 am
- The Roth-Rinchuse debate: A timely memorialby Monisha J., Elbe Peter, Ashima Valiathan on 01/09/2021 at 12:00 am
The guest editorial in the February issue of the American Journal of Orthodontics and Dentofacial Orthopedics by Dr Rinchuse (Rinchuse DJ. The Roth-Rinchuse Debate: It's been 25 years. Am J Orthod Dentofacial Orthop 2021;159:141-6) was one of the best in the recent years pertaining to the centric relation-centric occlusion discrepancy. We have been calling it the “Ron-Don debate” in our residency discussions, and the editorial provided us a good reference.
- Authors’ responseby Bin Yan, Dan Cao, Bingting Shao on 01/09/2021 at 12:00 am
We appreciate the effort made by the authors in writing the letter.
- Root dilacerations and apical hooks in maxillary impacted caninesby Santosh Kumar Goje on 01/09/2021 at 12:00 am
I read the article by Cao et al in the February 2021 issue with great interest (Cao D, Shao B, Izadikhan I, Xie L, Wu B, Li H, et al. Root dilaceration in maxillary impacted canines and adjacent teeth: A retrospective analysis of the difference between buccal and palatal impaction. Am J Orthod Dentofacial Orthop 2021;159:167-74). I congratulate the authors for their work. They have clearly stated that impacted canines have a greater chance of apical root curvature or apical hooks. After reading the article, I thought of the following aspects, which might bring more clarity to the article.
- Authors’ responseby Eunhye Oh, Sug-Joon Ahn, Liselotte Sonnesen on 01/09/2021 at 12:00 am
We thank the readers for their interest in the study and their letter.
- Functional appliance treatment in children with morphologic deviations in the upper spineby Aditya Talwar, Isha Duggal, Ritu Duggal on 01/09/2021 at 12:00 am
We read with great interest the article by Oh et al (Oh E, Ahn S-J, Sonnesen L. Treatment effects of functional appliances in children with Class II malocclusion with and without morphologic deviations in the upper spine. Am J Orthod Dentofacial Orthop. Epub 2021 Apr 19). We appreciate and thank the authors for this interesting study on functional appliance therapy. However, we would like further clarification regarding some aspects of the study.
- September 2021by Allen H. Moffitt on 01/09/2021 at 12:00 am
- Table of Contentson 01/09/2021 at 12:00 am
- Editorial Boardon 01/09/2021 at 12:00 am
- Effect of build angle and layer height on the accuracy of 3-dimensional printed dental modelsby Jennifer Ko, Richard D. Bloomstein, David Briss, J. Nathaniel Holland, Hamdy Mohammed Morsy, F. Kurtis Kasper, Wei Huang on 01/09/2021 at 12:00 am
Three-dimensional (3D) printing technologies are profoundly changing the landscape of orthodontics. To optimize treatment-oriented applications, dimensional fidelity is required for 3D-printed orthodontic models. This study aimed to evaluate the effect of build angle and layer height on the accuracy of 3D-printed dental models and if each of their influences on print accuracy was conditional on the other.
- Authors’ responseby Donald J. Rinchuse on 01/09/2021 at 12:00 am
Thank you for your interest in my recent Guest Editorial, “The Roth-Rinchuse Debate: It's been 25 years.” I enjoyed learning that the discussion of my article turned into a department seminar involving 3 generations of orthodontists and residents. And I very much liked the new name for the debate, that is, “The Ron-Don Debate.”
- Information for readerson 01/09/2021 at 12:00 am
- Pharyngeal airway dimensional changes after orthodontic treatment with premolar extractions: A systematic review with meta-analysisby Noha Orabi, Carlos Flores-Mir, Tarek Elshebiny, Sherif Elkordy, Juan Martin Palomo on 31/08/2021 at 12:00 am
The objective of this research was to evaluate the effect of orthodontic extraction on the pharyngeal airway volume and Minimum cross-sectional area (MCA) in growing and adult patients.
- Impact of COVID-19 on Orthodontic Education in Predoctoral and Postdoctoral Programs in the United Statesby Ava Vakili, Benjamin W. Chaffee, Snehlata Oberoi on 30/08/2021 at 12:00 am
The aim of the study was to characterize the impact of the COVID-19 pandemic on predoctoral and postdoctoral orthodontic education.
- Incidence of orthodontic appliance failures during the COVID-19 lockdown periodby Mehmet Ali Yavan, Merve Cingoz, Tunahan Mustafa Ceylan, Metin Calisir on 26/08/2021 at 12:00 am
As a result of the rapid spread of the disease caused by severe acute respiratory syndrome coronavirus 2, the World Health Organization declared a global pandemic on March 11, 2020. Governments worldwide adopted various measures to stop or slow the spread of coronavirus disease 2019 (COVID-19). One widely used measure was lockdown; workers who could work from home were instructed to do so, and nonessential businesses—including dental clinics—were closed for weeks or months. The purpose of this investigation was to document the incidence of fixed orthodontic appliance failures and the periodontal health status of patients undergoing fixed orthodontic treatment during and after the lockdown period.
- Blue light & chlorhexidine therapies on Streptococcus mutans biofilm and its regrowth on an in vitro orthodontic modelby Beatriz H.D. Panariello, Eder A.M. Cavichioli, Sabrina Feitosa Sochacki, Luiz Gonzaga Gandini Junior, Simone Duarte on 25/08/2021 at 12:00 am
Fixed orthodontic appliances create areas of stagnation for dental biofilms and make it difficult to clean the teeth; therefore, there is a risk of developing incipient caries lesions during the orthodontic treatment. The objective of this study is to determine if the combination of 2 different therapies, phototherapy by blue light (BL) and the antimicrobial 0.12% chlorhexidine (CHX) on enamel, orthodontic brackets, and elastics, would reduce or inhibit mature Streptococcus mutans biofilms and their regrowth on these substrates 24 hours after the application of the treatment; and if this treatment would interfere with bracket adhesion to the enamel.
- Perceptions of orthodontists, laypersons, and patients regarding buccal corridors and facial typesby Yingyi Huang, Yili Xu, Fan Liu, Jiaqian Fan, Murong Li, Yonghua Lei on 25/08/2021 at 12:00 am
The space on each side of the mouth, between the commissure of the mouth and the buccal surface of the last visible tooth, is called the buccal corridor. The size of the buccal corridor can affect perceptions of facial esthetics. We analyzed the perceptions of orthodontists, laypersons, and orthodontic patients regarding the size of buccal corridors in people with brachyfacial, mesofacial, and dolichofacial types.
- Professor Franco Magni: Friend, mentor, inventor, and scholarby Mark Hans, Antonio Magni, Mauro Cozzani, Rosemary Bray, Rolf Behrents on 24/08/2021 at 12:00 am
Seldom in the course of a career in orthodontics does one come across a colleague who is truly inspiring in their approach to life. Professor Franco Magni of Genoa, Italy, was one of those rare individuals.
- Effectiveness of microosteoperforations in accelerating alignment of maxillary anterior crowding in adults: A randomized controlled clinical trialby Azaitun Akma Shahrin, Sarah Haniza Abdul Ghani, Noraina Hafizan Norman on 24/08/2021 at 12:00 am
This trial aimed to investigate the effectiveness of microosteoperforations (MOPs) in overall time taken for alignment of maxillary anterior crowding and to evaluate the alignment improvement percentage within 6 months between MOPs and control groups.
- Spontaneous remission of internal root resorption during orthodontic treatment: A clinical follow-up reportby Marcio José da Silva Campos, Jocimara Domiciano Fartes de Almeida Campos, Jéssica Lívia Andrade Fontes, José Lucas dos Santos Araújo, Luciana Cláudia Diniz Tavares, Robert Willer Farinazzo Vitral on 24/08/2021 at 12:00 am
Internal root resorption (IRR) is a pathologic process that occurs because of external stimuli that affect the pulp and result in the loss of dentinal tissue. The occurrence of IRR is considered relatively rare, and the etiology is not fully understood, although trauma is believed to be the main etiologic agent. The current study presented a case report of spontaneous remission of an IRR lesion diagnosed during orthodontic treatment. The lesion was characterized by a circular and delimited radiolucent image, located in the apical third of the root canal of the maxillary right lateral incisor diagnosed during orthodontic treatment.
- Proximal enamel thickness of the permanent teeth: A systematic review and meta-analysisby Vignesh Kailasam, Hita Rangarajan, Harshini Nivetha Easwaran, M.S. Muthu on 19/08/2021 at 12:00 am
This systematic review aimed to identify, evaluate, and provide a synthesis of the available literature on the proximal enamel thickness (PET) of permanent teeth.
- Peak loads on teeth from a generic mouthpiece of a vibration device for accelerating tooth movementby Amin Akbari, Dongcai Wang, Jie Chen on 19/08/2021 at 12:00 am
The effect of vibrational force (VF) on accelerating orthodontic tooth movement depends on the ability to control the level of stimulation in terms of its peak load (PL) on the tooth. The objective of this study was to investigate the PL distribution on the teeth when a commercial VF device is used.
- Impact of variations in maxillary lateral incisor dimensions on smile estheticsby Alireza Haerian, Elaheh Rafiei, Neda Joshan, Rojin Eghbali, Pooya Fadaei Tehrani on 17/08/2021 at 12:00 am
Dentofacial esthetics has become an increasingly important topic in recent years among orthodontic patients, so it is suggested that the esthetic perspectives of clinicians and patients be considered when planning orthodontic treatment. The maxillary lateral incisors play a key role in smile esthetics. The purpose of this study was to investigate the effect of dimensional changes of the maxillary lateral incisors on smile esthetics as perceived by orthodontists, general dentists, and laypersons.
- Accuracy and reliability of tooth widths and Bolton ratios measured by ClinCheck Proby Arun Shailendran, Tony Weir, Elissa Freer, Brett Kerr on 17/08/2021 at 12:00 am
This study aimed to assess the accuracy and reliability of tooth widths and Bolton ratios measured in ClinCheck Pro.
- The effect of 4 first premolar extractions on the posterior Bolton ratioby Anthony D. Mongillo, Eustáquio A. Araújo, Ki Beom Kim, Patrick F. Foley on 12/08/2021 at 12:00 am
Overall and anterior Bolton ratios have been well covered in the orthodontic literature; however, little has been reported on posterior Bolton ratios. Considering the frequency of premolar extractions in the specialty, it would be relevant to know how the posterior occlusion is affected by premolar extractions. This study aimed to investigate how the posterior Bolton ratio is affected by the extraction of the 4 first premolars.
- Safe sites for orthodontic miniscrew insertion in the infrazygomatic crest area in different facial types: A tomographic studyby Almir Lima, Rafael Golghetto Domingos, Annelise Nazareth Cunha Ribeiro, José Rino Neto, João Batista de Paiva on 12/08/2021 at 12:00 am
Temporary skeletal anchorage devices (TSADs) are used to obtain skeletal anchorage for orthodontic treatment. Their insertion in the infrazygomatic crest (IZC) allows efficient orthodontic mechanics. Different facial types have different bone configurations. We aimed to evaluate the differences in bone thicknesses in the IZC area among patients of each facial type to determine a safe zone for TSAD insertion.
- Interdisciplinary rehabilitation for mutilated dentition with mini-implants, autotransplants, and a dental implantby Johnny J.L. Liaw, Irene Y.H. Shih, Stella Y.H. Yang, Fang-Fang Tsai, Shin-Huei Wang on 12/08/2021 at 12:00 am
A patient with mutilated dentition was treated to an acceptable result with the help of mini-implants for anchorage, autotransplantation of 2 teeth, one dental implant, and multiple prostheses. The major problems for this mutilated dentition were multiple missing teeth, bite collapse with posterior crossbites, deepbite with a canted gummy smile, and severe skeletal discrepancy of maxillary protrusion and mandibular retrusion. Mini-implant anchorage was applied to retract and intrude the maxillary arch to reduce the protrusion and rotate the mandible counterclockwise to improve the chin projection.
- A comparative assessment of failures and periodontal health between 2 mandibular lingual retainers in orthodontic patients. A 2-year follow-up, single practice-based randomized trialby Ewa Węgrodzka, Katarzyna Kornatowska, Nikolaos Pandis, Piotr S. Fudalej on 09/08/2021 at 12:00 am
The objective of this study was to compare the survival rates and periodontal health in patients with 3-strand round twisted (RT) vs 8-strand rectangular braided (RB) fixed retainers bonded to all 6 anterior teeth in the mandible.
- Comparative finite element analysis of bracket deformation in tie wings and slot region during simulated torqueby Pandurangan Harikrishnan, Varadaraju Magesh on 07/08/2021 at 12:00 am
Torque in orthodontics is the activation of the archwire for the third-order movement of teeth. During this force transfer mechanism from the twisted archwire, the bracket is prone to deformation. This study aimed to compare the deformation in tie wings and the slot region of the bracket during torque using finite element analysis.
- An analysis of clinical and imaging features of unilateral impacted maxillary central incisors: A cross-sectional studyby Jifang Hui, Yirui Niu, Rongzhao Jin, Xiaoni Yang, Jie Wang, Hongying Pan, Jianguo Zhang on 06/08/2021 at 12:00 am
This cross-sectional study sought to assess clinical features and 3-dimensional distribution of unilateral impacted maxillary central incisors and identify factors associated with the root morphology.
- Analysis of nasal airway symmetry and upper airway changes after rapid maxillary expansionby Charles DiCosimo, Ahmed A. Alsulaiman, Charmi Shah, Melih Motro, Leslie A. Will, Goli K. Parsi on 06/08/2021 at 12:00 am
The objectives of this study were to assess the changes in right vs left nasal cavity volumes and minimum cross-sectional width, nasopharyngeal, and oropharyngeal volumes of the upper airway in response to rapid maxillary expansion (RME).
- Predictability of overbite control with the Invisalign applianceby Haylea L. Blundell, Tony Weir, Brett Kerr, Elissa Freer on 06/08/2021 at 12:00 am
Control of overbite is considered essential in achieving ideal orthodontic outcomes. Questions have been raised regarding the accuracy of ClinCheck software (Align Technology, Santa Clara, Calif) in predicting posttreatment outcomes with Invisalign, with the paucity of well-researched literature available on this topic. This research aimed to investigate and determine the accuracy of Invisalign (Align Technology) in correcting a deep overbite by comparing the outcomes predicted by ClinCheck with achieved posttreatment outcomes.
- Outcomes used in trials regarding the prevention and treatment of orthodontically induced white spot lesions: A scoping reviewby Yunlei Wang, Danchen Qin, Feiyang Guo, Colin Levey, Greg Huang, Peter Ngan, Fang Hua, Hong He, Core Outcome Set for trials on the prevention and treatment of enamel White Spot Lesions (COS-WSL) group on 05/08/2021 at 12:00 am
The objective was to identify and summarize the outcomes and evaluation methods used in clinical trials regarding the prevention and treatment of orthodontically induced white spot lesions (WSLs).
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