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American Journal of Orthodontics and Dentofacial Orthopedics

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https://www.readbyqxmd.com/read/28364908/logistic-regression-part-1
#1
EDITORIAL
Nikolaos Pandis
No abstract text is available yet for this article.
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364907/do-web-site-postings-qualify-as-learned-treatises
#2
EDITORIAL
Laurance Jerrold
No abstract text is available yet for this article.
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364906/use-of-redundant-arrays-of-inexpensive-disks-in-orthodontic-practice
#3
David Matthew Graham, Michael James Graham, Mel Mupparapu
In a time when orthodontists are getting away from paper charts and going digital with their patient data and imaging, practitioners need to be prepared for a potential hardware failure in their data infrastructure. Although a backup plan in accordance with the Security Rule of the Health Insurance Portability and Accountability Act (HIPAA) of 1996 may prevent data loss in case of a disaster or hard drive failure, it does little to ensure business and practice continuity. Through the implementation of a common technique used in information technology, the redundant array of inexpensive disks, a practice may continue normal operations without interruption if a hard drive fails...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364905/memotain-a-cad-cam-nickel-titanium-lingual-retainer
#4
Neal D Kravitz, Dan Grauer, Pascal Schumacher, Yong-Min Jo
Approximately 1/2 of maxillary and 1/5 of mandibular multi-stranded lingual retainers fail during retention in some form, either bond failure or wire breakage. Memotain is a new CAD/CAM fabricated lingual retainer wire made of custom-cut nickel-titanium, as an alternative to multi-stranded lingual retainers. It offers numerous perceived advantages to the traditional multi-stranded stainless steel wire, including precision fit, avoidance of interferences, corrosion resistance and even the potential for minor tooth movement as an active lingual retainer...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364904/camouflage-treatment-of-skeletal-class-iii-malocclusion-with-conventional-orthodontic-therapy
#5
Jae Hyun Park, Joseph Yu, Ryan Bullen
Nonextraction camouflage treatment along with Class III elastics was used to treat a 39-year-old woman with a skeletal Class III pattern and a low mandibular plane angle and short lower anterior facial height. The total active treatment time was 26 months. Her occlusion, smile esthetics, and soft tissue profile were significantly improved after treatment.
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364903/long-term-follow-up-of-a-patient-with-achondroplasia-treated-with-an-orthodontic-approach
#6
Hiroyo Mori, Kazuma Matsumoto, Nobuhiko Kawai, Takashi Izawa, Shinya Horiuchi, Eiji Tanaka
We successfully treated a patient with achondroplasia with conventional orthodontic techniques. It was followed by long-term retention. The patient, a 12-year-old boy, had chief complaints of occlusal disturbance and mandibular protrusion. He had been diagnosed with achondroplasia and had growth hormone treatment in his early teenage years. His facial profile was concave with a bulging forehead and a retrognathic maxilla. It was characterized by a skeletal Class III jaw-base relationship with a retropositioned maxilla...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364902/orthodontic-and-surgical-management-of-a-patient-with-severe-skeletal-class-ii-deformity-and-facial-asymmetry-a-case-report-with-a-5-year-follow-up
#7
Xiang Gao, Tao Wang, Jinlin Song
In this case report, we present the orthodontic and surgical management of an 18-year-old girl who had a severe craniofacial deformity, including maxillary prognathism, vertical maxillary excess (gummy smile), mandibular retrognathism, receding chin, and facial asymmetry caused by unilateral temporomandibular joint ankylosis. For correction of the facial asymmetry, the patient's right mandibular ramus and body were lengthened via distraction osteogenesis after 5 months of preoperative orthodontic therapy. Subsequently, extraction of 4 first premolars, bimaxillary anterior segmental osteotomy, and genioplasty were simultaneously performed in the second-stage operation to correct the skeletal deformities in the sagittal and vertical planes...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364901/analysis-of-dentoalveolar-structures-with-novel-corticotomy-facilitated-mandibular-expansion-a-3-dimensional-finite-element-study
#8
Deepal Haresh Ajmera, Pradeep Singh, Chao Wang, Jinlin Song, Shui Sheng Xiao, Yubo Fan
INTRODUCTION: Surgically assisted mandibular arch expansion is an effective treatment modality for alleviating constriction and crowding. However, only mandibular symphyseal osteotomy is recommended for mandibular arch expansion. No relevant studies have compared the biomechanical responses of different corticotomy designs on mandibular expansion. Therefore, the aim of this study was to evaluate the effect of different corticotomy approaches and modes of loading on the expansion of adult mandibles using biomechanics...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364900/leveling-the-curve-of-spee-with-continuous-archwire-appliances-in-different-vertical-skeletal-patterns-a-retrospective-study
#9
Matteo Rozzi, Manuela Mucedero, Chiara Pezzuto, Paola Cozza
INTRODUCTION: The aim of this study was to determine the effects of the leveling of the curve of Spee in subjects treated with preadjusted appliances in different skeletal vertical patterns. METHODS: The study sample consisted of 90 white patients (39 male, 51 female; age, 19 years 4 months ± 1 year 9 months), with a curve of Spee of 2 mm or greater before treatment. They were categorized into 3 groups: low-angle group (30 subjects; 12 male, 18 female; age, 19 years 1 month ± 1 year 4 months), normal-angle group (30 subjects; 14 male, 16 female; age, 19 years 6 months ± 2 years 1 month), and high-angle group (30 subjects; 13 male, 17 female; age, 19 years 7 months ± 1 year 5 months) by their vertical facial types...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364899/atomic-force-microscopy-analysis-of-enamel-nanotopography-after-interproximal-reduction
#10
Lydia Meredith, Mauro Farella, Sam Lowrey, Richard D Cannon, Li Mei
INTRODUCTION: Interproximal reduction (IPR) removes enamel and leaves grooves and furrows on the tooth surface, which may increase the risk of caries. The aims of this study were to assess the nanotopography of enamel surfaces produced by the most commonly used IPR instruments and to evaluate the effect of polishing after IPR. METHODS: Enamel slabs were cut from the interproximal surfaces of healthy premolars and then treated with diamond burs, strips, or discs, or Sof-Lex polishing discs (3M ESPE, St Paul, Minn)...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364898/racial-and-sex-differences-in-timing-of-the-cervical-vertebrae-maturation-stages
#11
Mona A Montasser, Grace Viana, Carla A Evans
INTRODUCTION: Our objective was to investigate skeletal maturation of female and male subjects from different racial groups by comparing the cervical vertebrae maturation (CVM) stages. METHODS: The study included 3 racial groups: white, African American, and Hispanic subjects. Each group was subdivided into female and male. The age range of the subjects was between 7 and 18 years. The sample included 60 lateral cephalographs for each subgroup. Skeletal maturation of the cervical vertebrae was assessed according to a method that described 6 CVM stages...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364897/arch-width-changes-in-extraction-vs-nonextraction-treatments-in-matched-class-i-borderline-malocclusions
#12
COMPARATIVE STUDY
Claudio Herzog, Dimitrios Konstantonis, Nikoleta Konstantoni, Theodore Eliades
INTRODUCTION: The aims of this study were to identify a sample of borderline Class I extraction and nonextraction patients and to investigate posttreatment changes in arch-width and perimeter measurements. METHODS: A parent sample of 580 Class I patients was subjected to discriminant analysis, and a borderline subsample of 62 patients, 31 treated with extraction of 4 first premolars and 31 treated without extractions, was obtained. The patients' plaster casts were digitally scanned, and the maxillary and mandibular intercanine and intermolar widths and perimeters were assessed...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364896/sixteen-week-analysis-of-unaltered-elastomeric-chain-relating-in-vitro-force-degradation-with-in-vivo-extraction-space-tooth-movement
#13
Kristin S Evans, Cory M Wood, Allen H Moffitt, John A Colgan, J Kevin Holman, Steven D Marshall, D Spencer Pope, Lew B Sample, Stephen L Sherman, Peter M Sinclair, Tim S Trulove
INTRODUCTION: The purposes of this study were to evaluate whether unaltered elastomeric chain can continue to move teeth for 16 weeks and to relate it to the amount of force remaining for the same batch of elastomeric chains. METHODS: The in-vivo portion of the study had a sample of 30 paired extraction space sites from 22 subjects who were measured for closure of the space every 28 days. The altered side elastomeric chain served as the control and was replaced at 28-day intervals whereas the experimental side remained unaltered...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364895/radiographic-prognostic-factors-determining-spontaneous-space-closure-after-loss-of-the-permanent-first-molar
#14
Sameer Patel, Paul Ashley, Joseph Noar
INTRODUCTION: Permanent first molars (PFM) with a poor prognosis are routinely extracted in children throughout the United Kingdom. National guidelines suggest that to achieve spontaneous closure for the mandibular arch, the PFM should be extracted at 8 to 10 years of age, during bifurcation formation of the second molar. The literature is of limited quality and has suggested alternative variables that may be associated with successful space closure. Our aim was to investigate the radiographic prognostic factors associated with space closure after extraction of PFM...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364894/apical-root-resorption-due-to-mandibular-first-molar-mesialization-a-split-mouth-study
#15
Jonas Winkler, Nicolas Göllner, Peter Göllner, Pawel Pazera, Nikolaos Gkantidis
INTRODUCTION: Our aim was to evaluate the risk of external apical root resorption (EARR) in mesialized mandibular molars due to space closure in patients with unilateral second premolar agenesis. The contralateral side served as the control. METHODS: After application of eligibility criteria, 25 retrospectively selected subjects (median age, 14.9 years; range, 12.0-31.9 years) were analyzed. Space closure (approximately 10 mm) was performed using skeletal anchorage...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364893/genetic-polymorphisms-underlying-the-skeletal-class-iii-phenotype
#16
Christiane Vasconcellos Cruz, Claudia Trindade Mattos, José Calasans Maia, José Mauro Granjeiro, Maria Fernanda Reis, José Nelson Mucha, Beatriz Vilella, Antonio Carlos Ruellas, Ronir Raggio Luiz, Marcelo Castro Costa, Alexandre Rezende Vieira
INTRODUCTION: Our goal was to verify the association between candidate polymorphisms and skeletal Class III malocclusion in a well-characterized homogeneous sample set. METHODS: Thirty-five single-nucleotide polymorphisms were studied from 10 candidate loci in 54 Class III subjects and 120 controls. Skeletal Class III characteristics included ANB angle less than 0°, SNB angle greater than 83° (mandibular prognathism), SNA angle less than 79° (maxillary deficiency), Class III molar relationship, and negative overjet...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364892/management-of-overbite-with-the-invisalign-appliance
#17
Roozbeh Khosravi, Bobby Cohanim, Philippe Hujoel, Sam Daher, Michelle Neal, Weitao Liu, Greg Huang
INTRODUCTION: Most of the published literature on the management of overbite with the Invisalign appliance (Align Technology, Santa Clara, Calif) consists of case reports and case series. METHODS: In this retrospective study of 120 patients, we sought to assess the nature of overbite changes with the Invisalign appliance. Records were collected from 3 practitioners, all experienced with the Invisalign technique. The patients were consecutively treated adults (>18 years old) who underwent orthodontic treatment only with the Invisalign appliance...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364891/improvement-in-peer-assessment-rating-scores-after-nonextraction-premolar-extraction-and-mandibular-incisor-extraction-treatments-in-patients-with-class-i-malocclusion
#18
Adeel Tahir Kamal, Attiya Shaikh, Mubassar Fida
INTRODUCTION: Different treatment protocols implemented for correction of Class I malocclusion aim at achieving ideal occlusal characteristics. This study was planned to evaluate the improvement in the occlusal characteristics of Class I patients treated with nonextraction (NE), all first premolar extractions (PME), and mandibular incisor extraction (MIE) as assessed by the percentage of improvement in Peer Assessment Rating (PAR) scores. METHODS: This retrospective cross-sectional study was conducted on the pretreatment and posttreatment dental casts of 108 subjects with Class I malocclusion...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364890/assessment-of-antibacterial-and-cytotoxic-effects-of-orthodontic-stainless-steel-brackets-coated-with-different-phases-of-titanium-oxide-an-in-vitro-study
#19
Roshen Daniel Baby, Siva Subramaniam, Ilakkiya Arumugam, Sridevi Padmanabhan
INTRODUCTION: Our objective was to assess the antibacterial and cytotoxic effects of orthodontic stainless steel brackets coated with different phases of photocatalytic titanium oxide. METHODS: From a total sample of 115 brackets, 68 orthodontic stainless steel brackets were coated with titanium oxide using a radiofrequency magnetron sputtering machine. The coated brackets were then converted into 34 each of the anatase and rutile phases of titanium oxide. These brackets were subdivided into 4 groups for antibacterial study and 3 groups for cytotoxicity study...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28364889/streptococcus-mutans-forms-xylitol-resistant-biofilm-on-excess-adhesive-flash-in-novel-ex-vivo-orthodontic-bracket-model
#20
Cindy S F Ho, Yue Ming, Kelvin W C Foong, Vinicius Rosa, Truong Thuyen, Chaminda J Seneviratne
INTRODUCTION: During orthodontic bonding procedures, excess adhesive is invariably left on the tooth surface at the interface between the bracket and the enamel junction; it is called excess adhesive flash (EAF). We comparatively evaluated the biofilm formation of Streptococcus mutans on EAF produced by 2 adhesives and examined the therapeutic efficacy of xylitol on S mutans formed on EAF. METHODS: First, we investigated the biofilm formation of S mutans on 3 orthodontic bracket types: stainless steel preadjusted edgewise, ceramic preadjusted edgewise, and stainless steel self-ligating...
April 2017: American Journal of Orthodontics and Dentofacial Orthopedics
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