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Journal of Orthodontic Science

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https://www.readbyqxmd.com/read/29765920/space-creation-for-a-missing-central-incisor-using-functional-and-fixed-appliances
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/29119096/severe-skeletal-class-ii-division-1-malocclusion-in-postpubertal-girl-treated-using-forsus-with-miniplate-anchorage
#10
Harshal Ashok Patil, Veerendra V Kerudi, B M Rudagi, Jitendra S Sharan, Pawankumar Dnyandeo Tekale
This case report outlines the treatment of a 17-year-old female with Class II Division 1 malocclusion with mandibular retrusion, deep bite, and convex facial profile. The Forsus fatigue resistance device with miniplate was used for this patient and it was very affecting tool in correcting both skeletal and dental parameters. The total active treatment time was 19 months. This method can serve as an alternate choice of treatment, especially those who refuse orthognathic surgery. Hence, Forsus with miniplate might be useful in both growing and postpubertal patients...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119095/changes-consequent-to-maxillary-molar-distalization-with-the-bone-anchored-pendulum-appliance
#11
Aldo Otazú Cambiano, Guilherme Janson, Acácio Fuziy, Daniela Gamba Garib, Diego Coelho Lorenzoni
OBJECTIVES: This retrospective study aimed to evaluate the dentoalveolar, skeletal, and soft tissue effects obtained with bone-anchored pendulum appliance in patients with Class II malocclusion. MATERIALS AND METHODS: A total of 18 patients (4 male, 14 female) at a mean pretreatment age of 14.0 years (+1.08) were enrolled in this study. All patients were treated with the bone-anchored pendulum appliance for an average duration of 4.8 months. Only the active distalization period was evaluated with predistalization and postdistalization lateral cephalograms...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119094/a-comparison-of-orthodontic-elastic-forces-focus-on-reduced-inventory
#12
Ameerah Y Mansour
OBJECTIVES: To compare orthodontic elastics with different force extension characteristics, thereby aiming to reduce the orthodontist's inventory for elastics. MATERIALS AND METHODS: Thirty nonextraction class I models were used to determine extension distances. Light, medium, and heavy forced Latex elastics of size 1/4 and 3/16 (from three manufacturers) were used. Thirty elastics from each pack were selected, for a total sample size of 540 elastics. Elastic force was measured at three extensions: three times the lumen (A), first molar to opposing canine (B), and second molar to opposing canine distance (C)...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119093/surface-modification-for-bonding-between-amalgam-and-orthodontic-brackets
#13
Wittawat Wongsamut, Sirichom Satrawaha, Kornchanok Wayakanon
OBJECTIVE: Testing of methods to enhance the shear bond strength (SBS) between orthodontic metal brackets and amalgam by sandblasting and different primers. MATERIALS AND METHODS: Three hundred samples of amalgam restorations (KerrAlloy® ) were prepared in self-cured acrylic blocks, polished, and divided into two groups: nonsandblasted and sandblasted. Each group was divided into five subgroups with different primers used in surface treatment methods, with a control group of bonded brackets on human mandibular incisors...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119092/effect-of-malocclusion-on-the-self-esteem-of-adolescents
#14
Salwa Mahmoud Taibah, Fadia Mohammed Al-Hummayani
INTRODUCTION: Esthetics plays an essential role in orthodontic treatment. The psychological effects of malocclusion are an inspiration to improve one's esthetics and seek treatment. OBJECTIVES: This study aimed to assess relationships between self-esteem and malocclusion severity and type in adolescents using a self-esteem measurement scale and the index of treatment need (IOTN) and to investigate the influence of age, sex, and school type in these relationships...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/29119091/alar-width-changes-due-to-surgically-assisted-rapid-palatal-expansion-a-meta-analysis
#15
REVIEW
Kevin C Lee, Michael Perrino
A major objective of orthognatic surgery is the aesthetic outcome. Treatments only correcting for dentoskeletal deformities are not sufficient for optimal facial results because undesirable soft tissue changes may accompany skeletal manipulations. The primary objective of this study was to investigate alar base width (ABW) changes a minimum of 6 months following surgically-assisted rapid palatal expansion (SARPE). The following electronic databases and citation indices were searched: PubMed, Cochrane Library, Scopus, Web of Science, Embase, and Virtual Health Library...
October 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717636/orthodontic-treatment-for-a-patient-with-multiple-sclerosis
#16
Manal A Bakathir
Multiple sclerosis (MS) is a chronic, autoimmune inflammatory disorder of the central nervous system (CNS) that affects myelinated axons, destroying the myelin and damaging axons to varying degrees. The course of MS is highly varied and unpredictable. Metals used during orthodontic treatment can negatively affect imaging techniques used to diagnose and monitor the progression of MS, while medications used to treat MS can negatively affect orthodontic tooth movement. The present case report highlights some of the challenges encountered during orthodontic treatment of a patient with MS and how to overcome them...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717635/the-fabrication-of-a-customized-occlusal-splint-based-on-the-merging-of-dynamic-jaw-tracking-records-cone-beam-computed-tomography-and-cad-cam-digital-impression
#17
Katerina Aslanidou, Chung How Kau, Christos Vlachos, Tayem Abou Saleh
OBJECTIVES: The aim of this case report was to present the procedure of fabricating a customized occlusal splint, through a revolutionary software that combines cone beam computed tomography (CBCT) with jaw motion tracking (JMT) data and superimposes a digital impression. MATERIALS AND METHODS: The case report was conducted on a 46-year-old female patient diagnosed with the temporomandibular disorder. A CBCT scan and an optical impression were obtained. The range of the patient's mandibular movements was captured with a JMT device...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717634/molar-distalization-with-2k-appliance-one-year-follow-up
#18
Tulika Tripathi, Priyank Rai, Navneet Singh
Correction of class II molars in growing patients with acceptable facial profile can be performed by distalization of maxillary first molars. However, in patients where compliance is difficult intraoral means of molar distalization is required. This case report describes the use and effectiveness of a novel 2K appliance in an 11-year-old female having an orthognathic profile, skeletal Class I relation, and Angle's Class II division 1 malocclusion with crowding of 8 mm and 3 mm in the maxillary and mandibular arches, respectively...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717633/cementum-and-dentin-repair-following-root-damage-caused-by-the-insertion-of-self-tapping-and-self-drilling-miniscrews
#19
Majid Ghanbarzadeh, Farzin Heravi, Reihaneh Abrishamchi, Hooman Shafaee, Narges Ghazi, Parya Heravi, Hamid Ghanbarzadeh
OBJECTIVE: The aim of this study was to evaluate the histological responses of cementum, root dentin, and pulp following intentional root injuries caused via self-tapping and self-drilling miniscrews. MATERIALS AND METHODS: Fourteen patients (with a mean age of 15.7 years and age range of 14-18 years) who were scheduled for the extraction of all four first premolars as part of their orthodontic treatment plan participated in this study. The roots of the right and the left quadrants' first premolars were designedly injured using self-tapping miniscrews and self-drilling miniscrews, respectively...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717632/effect-of-different-intracoronal-bleaching-methods-on-shear-bond-strength-of-ceramic-brackets-bonded-to-bleached-enamel-an-in-vitro-study
#20
Vikas Chauhan, Piush Kumar, Payal Sharma, Divya Shetty
OBJECTIVE: To investigate the effect of different intracoronal bleaching methods on the shear bond strength and site of failure of ceramic brackets. MATERIALS AND METHODS: Sixty freshly extracted human maxillary incisors were randomly divided into four groups (n = 15). Endodontic access cavity was prepared and root canals were filled, root fillings were removed 2mm apical to the cementoenamel junction, and a 2-mmthick layer of glass ionomer cement base was applied...
July 2017: Journal of Orthodontic Science
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