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Journal of Orthodontic Science

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https://www.readbyqxmd.com/read/30271764/comparison-of-cephalometric-variables-between-adult-spanish-and-japanese-women-with-class-i-malocclusion
#1
Yasuhiro Shimizu, José Durán Von Arx, Josep Maria Ustrell, Takashi Ono
OBJECTIVE: To our knowledge, no study has compared the facial and dental morphology of adult Latin and Japanese populations. The purpose of this study was to assess differences in the facial and dental morphology between adult Spanish and Japanese women with Class I malocclusion using lateral cephalograms. MATERIALS AND METHODS: The lateral cephalograms of 33 adult Spanish and 33 adult Japanese women were traced and digitized by a single investigator. All patients satisfied the following criteria: female sex; age 18-35 years; skeletal Class I malocclusion (ANB angle, 2°-5°; angle Class I malocclusion; arch length discrepancy, -10 to + 10 mm; overjet, 1-5 mm; overbite, 1-5 mm); absence of congenital anomalies, significant facial asymmetry, or congenitally missing teeth, with the exception of the third molars; significant temporomandibular joint problems; severe crowding; and no history of orthodontic treatment...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/30271763/legan-burstone-soft-tissue-profile-values-in-a-circassian-adult-sample
#2
Amjad Al Taki, Satanay Yaqoub, Mawada Hassan
OBJECTIVE: To determine the mean soft tissue facial profile for Circassian adults as determined by Legan-Burstone cephalometric analysis. MATERIALS AND METHODS: 71 lateral cephalometric radiographs for nongrowing Circassian adults with normal occlusion were traced and accurately measured. RESULTS: With regard to facial form analysis, Circassian adults showed higher facial convexity angle, retruded mandible, and obtuse lower face-throat angle...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/30271762/accuracy-and-reliability-of-tooth-length-measurements-on-conventional-and-cbct-images-an-in-vitro-comparative-study
#3
Kumar Adarsh, Payal Sharma, Achint Juneja
CONTEXT: The purpose of this study was to evaluate the accuracy and reliability of tooth length measurements using conventional and cone-beam computed tomography (CBCT) imaging techniques. AIM: The aim of this study was to assess the accuracy and reliability of various tooth length measurements made on CBCT scans and conventional imaging techniques [intraoral periapical radiograph (IOPA) and orthopantomogram (OPG)]. SETTINGS AND DESIGN: This is an in-vitro comparative study...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/30271761/dental-anomalies-and-their-treatment-modalities-planning-in-orthodontic-patients
#4
Anis A Roslan, Norma Ab Rahman, Mohammad K Alam
OBJECTIVE: This study was carried to study the prevalence of dental anomalies and treatment modalities/planning among the orthodontic patients. MATERIALS AND METHODS: A total of 370 orthodontic records including their pre-treatment orthopantomographs (OPG) and study models of orthodontic patients in permanent dentition who attended dental clinic were assessed for impaction, hypodontia, supernumerary, supraocclusion, infraocclusion, and any other anomalies excluding the third molars...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/30271760/assessment-of-anterior-malar-projection-using-visual-photographs-and-lateral-cephalograms-a-comparative-study
#5
Geeta Maruti Doddamani, P V Swathi, Kenneth F H Tan
BACKGROUND: The association between maxillary development and vector relationships is used in the field of plastic surgery, but the validity of this principle has not been tested yet. AIM: The aim of this study is to determine whether visual classification of anterior malar projection using vector relationships is supported by cephalometric analysis. MATERIALS AND METHODS: Normal, healthy 40 subjects aged 10-15 years with no history of orthodontic treatment, craniofacial syndromes, or trauma formed the study group...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963509/assessment-of-the-validity-of-orthopantomographs-in-the-evaluation-of-mandibular-steepness-in-libya
#6
Tayisir Ganeiber, Iman Bugaighis
AIM: The value of gonial angle indicates the range of steepness as well as the direction of mandibular growth. Exact measurement of right (R) and left (L) gonial angles from a lateral cephalometric radiograph is challenging due to the superimposition of both sides. Thus, the aim of the present study was to assess the potential of determining accurate measurement of R and L gonial angles by employing orthopantomographs (OPGs) and to compare the findings with the measurements obtained from lateral cephalometric radiographs...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963508/effects-of-force-magnitude-on-torque-control-in-the-correction-of-bimaxillary-protrusion-with-mass-retraction
#7
Jiao Li, Yunhe Zhao, Houxuan Li, Huang Li, Lang Lei
OBJECTIVES: This study was designed to explore whether force magnitude would influence incisor torque control and the overall outcome in patients with bimaxillary protrusion who need mass incisor retraction. MATERIALS AND METHODS: Forty-one female patients (aged > 15 years) with bimaxillary protrusion requiring mass incisor retraction were selected. Two sliding mechanics were utilized, with the elastic group receiving a light force of ~100 g by wearing elastics and the power chain group receiving a moderate force of ~250 g by power chain...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963507/shear-bond-strength-of-new-and-rebonded-orthodontic-brackets-to-the-enamel-surfaces
#8
Fouad Salama, Hessa Alrejaye, Malak Aldosari, Naif Almosa
OBJECTIVES: The objective of this study was to compare the shear bond strength (SBS) of new and rebounded orthodontic brackets bonded to the buccal sound and cleaned enamel surfaces using two orthodontic adhesives: resin-modified glass-ionomer (RMGI) and resin-composite. MATERIALS AND METHODS: Forty premolars were randomly allocated into four groups, 10 teeth/group. New and rebonded brackets were bonded to sound and cleaned enamel surface, and then were subjected to thermocycling...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963506/evaluation-of-root-length-following-treatment-with-clear-aligners-and-two-different-fixed-orthodontic-appliances-a-pilot-study
#9
Osama Eissa, Terry Carlyle, Tarek El-Bialy
OBJECTIVES: The purpose of this pilot study was to evaluate the root lengths of upper incisors as an indication of the degree of orthodontically-induced apical root resorption following treatment with Smart Track® aligners and compare it with two different fixed orthodontic appliances - regular and Damon brackets - using cone-beam computerized tomography (CBCT). MATERIALS AND METHODS: The sample comprised 33 patients with class I malocclusion and 4-6 mm crowding divided in 3 groups; Group I: 11 patients treated with Smart Track® aligners, group II: 11 patients treated with Damon brackets, and group III: 11 patients with regular brackets...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963505/pharyngeal-airway-dimensional-changes-after-premolar-extraction-in-skeletal-class-ii-and-class-iii-orthodontic-patients
#10
Huda M AlKawari, Hana O AlBalbeesi, Aseel A Alhendi, Hessah A Alhuwaish, Asma Al Jobair, Laila Baidas
OBJECTIVE: To assess and compare the changes in pharyngeal airway space dimensions following orthodontic treatment of skeletal class II and class III facial deformities with premolar extraction. MATERIALS AND METHODS: Sixty pre and posttreatment lateral cephalometric radiographs of patients who underwent fixed orthodontic treatment with premolar extraction were collected. The sample was divided into two groups - 32 patients with skeletal class II and 28 patients with skeletal class III malocclusion...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29963504/knowledge-demand-and-the-need-of-lay-people-for-the-orthodontic-specialty-in-comparison-to-other-dental-disciplines
#11
Naif A Bindayel
OBJECTIVE: To assess the knowledge of, demand for, and need for the orthodontic specialty in comparison to other dental fields in a sample of Saudi males. MATERIALS AND METHODS: multiple choice questionnaire was designed to assess participants' knowledge interest, demand, and need for treatment in the following dental specialties: orthodontics, periodontics, prosthodontics, endodontics, and restorative dentistry. Subjects desiring clinical examination underwent further assessment to document their actual needs...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765920/space-creation-for-a-missing-central-incisor-using-functional-and-fixed-appliances
#12
Waeil Batwa, Ibtesam Alzain
Children with an overjet of more than 6 mm are three times more likely to receive trauma to their upper incisors than children with an average overjet. This could be complicated with avulsion of permanent incisor and with space loss for the tooth. Functional appliances are usually used to treat Class II skeletal pattern and increased overjet in growing patients. The following is a case in which the Twin Block functional appliance was used, while its classic design was modified to treat a Class II skeletal problem and to open a space for a missing maxillary central incisor...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765919/assessing-the-validity-of-itk-snap-software-package-in-measuring-the-volume-of-upper-airway-spaces-secondary-to-rapid-maxillary-expansion
#13
Mohammed Almuzian, Hind Mohammed Al Ghatam, Lubna Al-Muzian
INTRODUCTION: The purpose of this study is to evaluate the validity of a free-access software package (ITK-SNAP) in segmenting and measuring the volume of upper airway spaces secondary to rapid maxillary expansion (RME). MATERIALS AND METHODS: Sixteen participants who required RME were recruited for this study. Preoperative (T1) and 6-month postoperative (T2) cone-beam computed tomographic scans of all participants were analyzed. OnDemand3D software packages was used for superimposition and orientation of the images, while ITK-SNAP software was used to measure the volume of airway spaces...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765918/comparative-tomographic-study-of-the-maxillary-central-incisor-collum-angle-between-class-i-class-ii-division-1-and-2-patients
#14
Murilo Fernando Neuppmann Feres, Bianca Santana Rozolen, Adel Alhadlaq, Thamer A Alkhadra, Tarek El-Bialy
INTRODUCTION: It has been reported that Class II, division 2 maxillary central incisors frequently demonstrate increased collum angles, which indicates an excessive palatal "bend" of the crown. However, evidence supporting such observation is mostly derived from radiographic studies. OBJECTIVE: The objective of this study was to evaluate and compare the collum angle of maxillary central incisors in Class I, Class II, division 1, and Class II, division 2 cases using cone-beam computed tomography...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765917/dentoskeletal-effects-of-the-forsus%C3%A2-fatigue-resistance-device-in-the-treatment-of-class-ii-malocclusion-a-systematic-review-and-meta-analysis
#15
Amal I Linjawi, Mona A Abbassy
OBJECTIVE: The aim of this systematic review and meta-analysis is to quantitatively compare previous studies that evaluated skeletal and dentoalveolar effects of the Forsus™ Fatigue Resistance Device (FRD) in the treatment of Class II malocclusion with a matched untreated control group. MATERIALS AND METHODS: Four electronic searches PubMed, Web of Science, Cochrane Library, and Science Direct that were limited to articles on human studies comparing the effect of Forsus appliance with a matched control group in the treatment of Class II malocclusion from the year (2000-2017)...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765916/an-assessment-of-job-satisfaction-a-cross-sectional-study-among-orthodontists-of-saudi-arabia
#16
Nasser D Alqahtani, Khaled Alshehry, Saad Alateeq, Hammad Alturki, Sahar Albarakati, Moshabab A Asiry, Muhammad S Ahmedani
AIM OF THE STUDY: The main objective of the present study was to investigate the level of job satisfaction among professional orthodontists in relation to some significant intrinsic and extrinsic factors that generally affect their performance. MATERIALS AND METHODS: A cross-sectional study was conducted among orthodontists working in the Kingdom of Saudi Arabia using an online survey questionnaire through Survey Monkey. A total of 161 responses were received; among those, 57...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765915/association-between-muscle-activity-and-overjet-in-class-ii-malocclusion-with-surface-electromyography
#17
Shamima Easmin Nishi, Rehana Basri, Norma Ab Rahman, Adam Husein, Mohammad Khursheed Alam
OBJECTIVES: The aim of the study was to assess the association and correlation between the overjet and muscle activity (the masseter and temporalis muscles) in patient with Class II malocclusion in different genders using surface electromyography (sEMG). MATERIALS AND METHODS: The overjet (measured clinically) and electromyographical activity (rest, chew, post chew rest, clench and post clench rest) of the masseter and temporalis muscle of class II malocclusion patient were assessed in 18 patients (3 males and 15 females) from the School of Dental Science, Hospital University Sains Malaysia...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765914/nonsurgical-treatment-and-stability-of-an-adult-with-a-severe-anterior-open-bite-malocclusion
#18
Aldo Otazú Cambiano, Guilherme Janson, Diego Coelho Lorenzoni, Daniela Gamba Garib, Dino Torres Dávalos
OBJECTIVES: A skeletal anterior open-bite is a challenging malocclusion for the orthodontist due to the difficulty and instability of correction. Treatment options for the adult patient include extractions, anterior extrusion with intermaxillary elastics, posterior intrusion using skeletal anchorage, occlusal adjustment, and orthognathic surgery. Patient compliance plays a key role in posttreatment stability. The present case report demonstrates the orthodontic treatment of an adult patient who presented with a complex open-bite malocclusion...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29765913/survival-analysis-of-an-orthodontic-bracket-bond-subjected-to-cyclic-tensile-and-shear-forces
#19
Ameerah Y Mansour, Mohamed Bamashmous
OBJECTIVES: The objective of this study was to evaluate the use of survival analysis in cyclic fatigue testing in orthodontic bracket bonding. MATERIALS AND METHODS: We used 100 extracted bovine lower incisors (50 orthodontic brackets and 50 eyelet brackets). Each set of brackets was further divided by etching technique (25 total-etch and 25 self-etch). Cyclic fatigue testing was performed at a crosshead speed of 2 mm/min using an up-and-down method. Kaplan-Meier survival data analyses and Cox regression analyses were performed...
2018: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119097/skeletal-anchorage-for-intrusion-of-bimaxillary-molars-in-a-patient-with-skeletal-open-bite-and-temporomandibular-disorders
#20
Akihiko Iwasa, Shinya Horiuchi, Nao Kinouchi, Takashi Izawa, Masahiro Hiasa, Nobuhiko Kawai, Akihiro Yasue, Ali H Hassan, Eiji Tanaka
The treatment of severe skeletal anterior open bite is extremely difficult in adults, and orthognathic surgery is generally selected for its treatment. We report the case of an 18-year-old adult patient with skeletal anterior open bite and temporomandibular disorders who was successfully treated using temporary anchorage devices. She had an open bite of -2.0 mm and an increased facial height. Miniplates were implanted in both the maxilla and mandible, and molar intrusion resulted in counterclockwise rotation of the mandible over a period of 12 months...
October 2017: Journal of Orthodontic Science
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