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on 01/03/2020 at 12:00 am
Effect of force direction and tooth angulation during traction of palatally impacted canines: A finite element analysis
by Kinan G. Zeno, Samir Mustapha, Georges Ayoub, Joseph G. Ghafari on 01/03/2020 at 12:00 am
Treatment of a palatally impacted canine (PIC) is associated with demanding anchorage control, increased treatment duration, and undesirable side effects. Accurate PIC localization and force application impact treatment success. The objective of this research was to determine the stresses on the PIC when subjected to initial force activation in various directions (buccal, vertical, and distal) and relative to impaction severity.
Impact of passive self-ligation and conventional elastic ligation on orthodontic force in the simulation of a mandibular lateral incisor linguoversion
by Keisuke Tochigi, Naomi Saze, Kazuhito Arai on 01/03/2020 at 12:00 am
This study compared three-dimensional forces delivered to the displaced tooth and its adjacent teeth between passive self-ligation (PSL) and conventional elastic ligation (CL) in simulation of mandibular lateral incisor linguoversions.
Cervical vertebral maturation: Are postpubertal stages attained in all subjects?
by Giuseppe Perinetti, Camilla Braga, Luca Contardo, Jasmina Primozic on 01/03/2020 at 12:00 am
The cervical vertebral maturation (CVM) method comprises 6 stages reported to be prepubertal (1 and 2), pubertal (3 and 4) and postpubertal (5 and 6), and its use has been recommended for planning treatment timing in orthodontics. Reliable use of the method implies that pubertal stages have to mature into postpubertal as soon as the growth peak is terminated. The present study was aimed at determining whether postpubertal CVM stages 5 or 6 are attained in all subjects.
The effect of micro-osteoperforations on the rate of orthodontic tooth movement: A systematic review and meta-analysis
by Saritha Sivarajan, Lorretha P. Ringgingon, Mona M.Salah Fayed, Mang Chek Wey on 01/03/2020 at 12:00 am
Minimally invasive micro-osteoperforations (MOPs) look promising for a routine acceleration of orthodontic tooth movement (OTM). The objective of this research was to systematically evaluate evidence regarding the effects of MOPs on the OTM rate, treatment duration, and associated complications.
Effect of maxillary incisors, lower lip, and gingival display relationship on smile attractiveness
by Hande Tosun, Burçak Kaya on 01/03/2020 at 12:00 am
This study aimed to evaluate the effect of the relationship between maxillary incisors and lower lip in conjunction with the maxillary gingival display on perception of smile attractiveness.
by Patrick K. Turley on 01/03/2020 at 12:00 am
I read with great interest the recent article by la Monaca et al regarding first and second molars with failed or delayed eruption (la Monaca G, Cristalli MP, Pranno N, Galluccio G, Annibali A, Pippi R. First and second permanent molars with failed or delayed eruption: clinical and statistical analyses. Am J Orthod Dentofacial Orthop 2019;156:355-64). A significant number of patients (161 molars), treated with 8 different methods, were examined.
Accuracy of digital light processing printing of 3-dimensional dental models
by Stephen L. Sherman, Onur Kadioglu, G. Frans Currier, J. Peter Kierl, Ji Li on 01/03/2020 at 12:00 am
This study aimed to investigate whether a digital light processing (DLP) printer could perform efficiently and with adequate accuracy for clinical applications when used with different settings and variations in the orientation of models on the build plate.
by Allen H. Moffitt on 01/03/2020 at 12:00 am
by Laurance Jerrold on 01/03/2020 at 12:00 am
Quintanilla v Dunkelman, 34 Cal. Rptr. 3d, 557 (App. 2005, rev. denied, No. 14252, Cal. Sup. Ct., December 21, 2005) is an interesting case dealing with informed consent that has direct application to orthodontics. Factually, it is very long, tedious to read, and language-intensive, so I'm going to provide a summary that can quickly get us to the heart of the matter. The plaintiff came to the United States when she was 2 years old. She grew up in a Spanish speaking household but obtained her entire education in our public school system.
It's a dual responsibility
by Peter M. Greco on 01/03/2020 at 12:00 am
You look forward to spending each Tuesday at the university where you hold a faculty appointment. The highlight of the week is the case presentation session, prepared by the residents for collective discussion by the entire department. The case presentations are often complex and controversial. Some patients have been treated with techniques other than your own, but as long as the fundamentals of orthodontic therapy are respected, the difference of opinion that emerges does not impact the collegiality of the faculty.
Table of Contents
on 01/03/2020 at 12:00 am
on 01/03/2020 at 12:00 am
Short-term effects of fixed orthodontic appliance on concentrations of mutans streptococci and persister cells in adolescents
by Chelsea Ko-Adams, Iacopo Cioffi, Delphine Dufour, S.M. Hashim Nainar, Céline M. Lévesque, Siew-Ging Gong on 01/03/2020 at 12:00 am
Orthodontic patients are at an increased risk for developing caries. Dental caries is a biofilm-mediated disease, with mutans streptococci (MS) as the primary etiologic bacterial group. It has been suggested that persister cells (PCs), a subset of cells within the biofilm, contribute to the chronic infectious nature of dental caries. PC formation can be induced by environmental stressors such as orthodontic treatment. The aim of this study was to quantify MS, aerobic and facultative anaerobe bacterial PC proportions from plaque samples during the initial stage of orthodontic treatment.
by Gerardo La Monaca, Maria Paola Cristalli, Nicola Pranno, Gabriella Galluccio, Susanna Annibali, Roberto Pippi on 01/03/2020 at 12:00 am
As reported in the Results section of our paper, treatment outcomes were known in 161 molars because 20 patients (36 molars) out of 125 patients were lost to follow-up, and they as well as those still in treatment were not considered in the statistical analysis.
Facial growth changes in a Colombian Mestizo population: An 18-year follow-up longitudinal study using linear mixed models
by Iván Jiménez, Luisa Villegas, Juan Carlos Salazar-Uribe, Luis Gonzalo Álvarez on 01/03/2020 at 12:00 am
Currently, a standard of reference for longitudinal facial growth parameters for South American mestizos is lacking. Therefore, in this study, we describe an 18-year follow-up of craniofacial growth from 6 to 24 years of age in a Colombian mestizo population, and an analysis of facial growth beyond 18 years of age.
Herbst appliance anchored with miniscrews: Some unsettled questions
by Chenghao Zhang on 01/03/2020 at 12:00 am
The Herbst appliance (HA) is one of the most useful fixed functional appliances for the functional orthopedic correction of Class II malocclusion. However, there are several unwanted side effects, such as the uncontrolled torque of the incisors and the anchorage loss of the molars. The article by Manni et al deals with this issue and, thus, greatly intrigues us (Manni A, Migliorati M, Calzolari C, and Silvestrini-Biavati A. Herbst appliance anchored to miniscrews in the upper and lower arches vs standard Herbst: A pilot study.
Orthodontic treatment for a patient with anterior open bite and severe condylar resorption
by Danal Moon, Jae Hyun Park, Gye Hyeong Lee on 01/03/2020 at 12:00 am
A 23-year-old woman with condylar resorption and a skeletal Class II pattern and anterior open bite were treated with 4 premolar extractions and temporary skeletal anchorage devices in both maxillary and mandibular arches. Before the start of orthodontic treatment, her unstable condylar position was stabilized with a stabilization splint for 6 months. Sequential evaluation of her condylar position was performed using a mandibular position indicator. The total active orthodontic treatment time was 30 months.
by Antonio Manni, Marco Migliorati on 01/03/2020 at 12:00 am
We thank the authors of the letter for giving us the opportunity to describe our manuscript better. Every point they raise is a chance for us to elucidate and explain.
Registration accuracy between intraoral-scanned and cone-beam computed tomography–scanned crowns in various registration methods
by Seung-Weon Lim, Hyeon-Shik Hwang, Il-Sik Cho, Seung-Hak Baek, Jin-Hyoung Cho on 01/03/2020 at 12:00 am
The purpose of this study was to investigate the registration accuracy between intraoral-scanned crowns and cone-beam computed tomography (CBCT)–scanned crowns in various registration methods.
The effects of botulinum injection on bone and cartilage of the mandibular condyle
by Jean-Daniel Kün-Darbois, Daniel Chappard on 01/03/2020 at 12:00 am
We read with great interest the article entitled “The effects on the mandibular condyle of Botox injection into the masseter are not transient” (Dutra EH, Yadav S. Am J Orthod Dentofacial Orthop 2019;156:193-202). The authors confirmed bone loss at the mandibular condyle on the side injected with botulinum toxin (BTX). We were really surprised to see that several recent references on the subject were missing.
Effects of Twin-block vs sagittal-guidance Twin-block appliance on alveolar bone around mandibular incisors in growing patients with Class II Division 1 malocclusion
by Chun-xi Zhang, Gang Shen, Yu-jun Ning, Hong Liu, Yi Zhao, Dong-xu Liu on 01/03/2020 at 12:00 am
The purpose of this study was to comparatively evaluate the effects of Twin-block (TB) appliance and sagittal-guidance Twin-block (SGTB) appliance on alveolar bone around mandibular incisors in growing patients with Class II Division 1 malocclusion, using cone-beam computed tomography.
The importance of careful selection between fixed-effect and random-effects models
by Loukia M. Spineli, Nikolaos Pandis on 01/03/2020 at 12:00 am
Implementation of a fixed-effect model implies that 2 conditions are met. First, we are confident about the similarity of all studies included in the meta-analysis (clinical homogeneity in terms of patient characteristics, implementation of the interventions, design, and conduct of the studies) and that it is sensible to synthesize the information. Second, we are interested in estimating a common effect size that is generalized strictly only for the population included in the meta-analysis.
Force degradation of orthodontic latex elastics analyzed in vivo and in vitro
by Liu Yang, Chenxing Lv, Fan Yan, Jianying Feng on 01/03/2020 at 12:00 am
The objective of this study was to evaluate the characteristics of force degradation of latex elastics of 10 kinds of elastics over 48 hours, both in vivo and in vitro.
Smile outcome comparison of Invisalign and traditional fixed-appliance treatment: A case-control study
by Terpsithea Christou, Roberto Abarca, Vasileios Christou, Chung How Kau on 01/03/2020 at 12:00 am
The purpose of this study was to evaluate and compare smile treatment outcomes between patients treated with Invisalign clear aligners (Align Technology, Santa Clara, Calif) and those treated with traditional fixed appliances by integrating variables such as lip symmetry, smile index, smile cant, buccal corridors, and gingival display into smile outcome evaluation.
Long-term stability of a Class III malocclusion with severe anterior open bite and bilateral posterior crossbite in a hyperdivergent patient
by Oscar Mario Antelo, Thiago Martins Meira, Dauro Douglas Oliveira, Matheus Melo Pithon, Orlando Motohiro Tanaka on 01/03/2020 at 12:00 am
Anterior open bite malocclusion is generally associated with several causes. This case report describes the 2-phase treatment of a 13-year-old boy with a Class III malocclusion, severe anterior open bite, and bilateral posterior crossbite treated without surgical intervention. An orthopedic approach was performed in phase 1 with a hyrax-type palatal expander, followed by maxillary protraction with a facemask for a 10-month period to promote the correction of transverse and sagittal deviations. In phase 2, a comprehensive orthodontic approach using fixed preadjusted appliances associated with intermaxillary elastics was performed.
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on 01/03/2020 at 12:00 am
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- The New England Journal of Medicine
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- American Journal of Orthodontics and Dentofacial Orthopedics