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https://www.readbyqxmd.com/read/28724930/assessment-of-different-techniques-for-3d-superimposition-of-serial-digital-maxillary-dental-casts-on-palatal-structures
#1
Georgios Vasilakos, Roman Schilling, Demetrios Halazonetis, Nikolaos Gkantidis
Serial 3-dimensional dental model superimposition provides a risk-free, detailed evaluation of morphological alterations on a patient's mouth. Here, we evaluated accuracy and precision of five palatal areas, used for superimposition of maxillary 3D digital dental casts. Sixteen pre- and post-orthodontic treatment dental casts of growing patients (median time lapse: 15.1 months) were superimposed on each palatal area using the iterative closest point algorithm. Area A (medial 2/3 of the third rugae and a small area dorsal to them) was considered the gold standard, due to high anatomical stability...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724785/orthodontic-treatment-induced-temporal-alteration-of-jaw-opening-reflex-excitability
#2
Au Sasaki, Naoya Hasegawa, Kazunori Adachi, Hiroshi Sakagami, Naoto Suda
The impairment of orofacial motor function during orthodontic treatment is need to be addressed, since most of orthodontic patients experience pain and motor excitability would be affected by pain. In the present study, the temporal alteration of the jaw-opening reflex excitability was investigated to determine if orthodontic treatment affects orofacial motor function. The excitability of jaw-opening reflex evoked by electrical stimulation on the gingiva and recorded bilaterally in the anterior digastric muscles was evaluated at one (D1), three (D3) and seven (D7) days after orthodontic force application to the teeth of right side, morphological features (e...
July 19, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28719906/a-common-ancestral-asn242ser-mutation-in-tmem67-identified-in-multiple-iranian-families-with-joubert-syndrome
#3
MohammadReza Dehghani, Majid Mojarad, Ehsan Ghayoor Karimiani, Mohammad Yahya Vahidi Mehrjardi, Afsaneh Sahebalzamani, Farah Ashrafzadeh, Mehran Beiraghi Toosi, Atiyeh Eslahi, Najmeh Ahangari, Seyed Mojtaba Yassini, Afsaneh Hassanbeigi, Azam Rasti, Seyed Mehdi Kalantar, Reza Maroofian
BACKGROUND: Joubert syndrome (JS) is a clinically and genetically heterogeneous group of rare neurodevelopmental disorder characterised by peculiar midbrain-hindbrain malformation, known as the "molar tooth" sign. JS can manifest a broad range of signs and symptoms. The most common features of JS are hypotonia, ataxia, developmental delay/intellectual disability, abnormal eye movements, and neonatal breathing abnormalities. To date, 29 genes have been shown to cause JS. METHODS: We employed whole-genome single nucleotide polymorphism genotyping in a group of Iranian families with JS and Sanger sequencing of a known mutation associated with JS located in a single homozygous regions shared by affected members of the families...
July 19, 2017: Public Health Genomics
https://www.readbyqxmd.com/read/28717636/orthodontic-treatment-for-a-patient-with-multiple-sclerosis
#4
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/28713600/periodontics-implantology-and-prosthodontics-integrated-the-zenith-driven-rehabilitation
#5
Fausto Frizzera, Mateus Tonetto, Guilherme Cabral, Jamil Awad Shibli, Elcio Marcantonio
A customized treatment plan is important to reach results that will satisfy the patient providing esthetics, function, and long-term stability. This type of oral rehabilitation requires professionals from different dental specialties where communication is a major key point. Digital Smile Design allows the practitioners to plan and discuss the patient's condition to establish the proper treatment plan, which must be driven by the desired zenith position. The ideal gingival position will guide the professionals and determine the need to perform surgical procedures or orthodontic movement before placing the final restorations...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28705081/an-evaluation-and-comparison-of-myeloperoxidase-enzymatic-activity-during-initial-orthodontic-alignment-an-in-vivo-study
#6
Asma Fatima, Ashok Kumar Talapaneni, Abdul Saleh, Safiya Sana, Arshad Hussain
INTRODUCTION: Tooth movement during orthodontic treatment is possible because of mechanical force-induced inflammation and remodelling in the periodontal ligament. Variation in the inflammatory response might be anticipated with initial aligning archwires of different composition. Myloperoxidase (MPO) is an enzyme found in neutrophil granules that represents an important marker of inflammation. The aim of this study was to measure MPO enzyme activity during initial alignment with orthodontic arch wires of different alloy types...
July 13, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28686090/how-accurate-is-invisalign-in-nonextraction-cases-are-predicted-tooth-positions-achieved
#7
Thorsten Grünheid, Charlene Loh, Brent E Larson
OBJECTIVE: To evaluate the accuracy of Invisalign technology in achieving predicted tooth positions with respect to tooth type and direction of tooth movement. MATERIALS AND METHODS: The posttreatment models of 30 patients who had nonextraction Invisalign treatment were digitally superimposed on their corresponding virtual treatment plan models using best-fit surface-based registration. The differences between actual treatment outcome and predicted outcome were computed and tested for statistical significance for each tooth type in mesial-distal, facial-lingual, and occlusal-gingival directions, as well as for tip, torque, and rotation...
July 7, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28684072/surgery-first-approach-in-orthognathic-surgery-psychological-and-biological-aspects-a-prospective-cohort-study
#8
Sebastian Zingler, Emad Hakim, Dominic Finke, Monika Brunner, Daniel Saure, Jürgen Hoffmann, Christopher J Lux, Ralf Erber, Robin Seeberger
INTRODUCTION: The aim of this pilot study was to investigate psychological and biological changes after application of a surgery-first orthognathic treatment approach. METHODS: A prospective cohort study of 9 patients (6 women and 3 men; mean age 26.7 years) suffering from skeletal Class II and III deformities was conducted. Skeletal changes from pre-to post-treatment were analyzed based on data acquired by use of cone-beam computed tomography (CBCT). Psychological changes were analyzed using the orthognathic quality of life (OQLQ) questionnaire, Sense of Coherence 29-item scale (SOC-29) and longitudinal day-to-day questionnaire...
June 6, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28682279/temporomandibular-pain-caused-by-sleep-disorders-a-review-and-case-report
#9
Daniel F Babiec
Patients who present to the general dentist's office with complaints of temporomandibular joint pain may exhibit signs and symptoms such as muscle soreness, bruxism, joint soreness, limited range of movement, altered movement, and facial pain as well as tooth chipping or tooth movement. After examinations, radiographic evaluations, and a review of medical history, dentists may have a bias toward regarding these symptoms as oral or dental in origin. After a diagnosis of a temporomandibular disorder (TMD), bruxism, or muscular spasms due to occlusal instabilities is established, the treatment protocol often includes an oral appliance (such as a nightguard), exercises, and pharmacologic agents...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28674791/effects-of-the-gaalas-diode-laser-780%C3%A2-nm-on-the-periodontal-tissues-during-orthodontic-tooth-movement-in-diabetes-rats-histomorphological-and-immunohistochemical-analysis
#10
Mônica Fernandes Gomes, Maria da Graças Vilela Goulart, Lilian Chrystiane Giannasi, Cybelle Mori Hiraoka, Gabriela de Fátima Santana Melo, Aretha Graziela Vilela de Sousa, Celestino José Prudente Nóbrega, Renato Amaro Zangaro, Miguel Angel Castillo Salgado
The purposes of the present study are to assess the effects of the GaAlAs diode laser on the periodontal tissues and to investigate its action on the alveolar bone remodeling process during orthodontic tooth movement in normoglycemic and diabetic rats. Sixty adult male Wistar rats were divided into four groups of 15 rats: normoglycemic (N), diabetic (D), laser-normoglycemic (LN), and laser-diabetic (LD) rats. Diabetes mellitus was induced by a single intravenous injection of 40 mg/kg monohydrated alloxan. The orthodontically moved tooth underwent a force magnitude of 20 cN...
July 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28670780/lithium-enhances-alveolar-bone-formation-during-orthodontic-retention-in-rats
#11
J Pan, S He, X Yin, Y Li, C Zhou, S Zou
OBJECTIVE: To investigate the effect of lithium on alveolar bone formation during orthodontic retention in rats. MATERIALS AND METHODS: After 2 weeks of orthodontic tooth movement (OTM), 42 8-week-old male Wistar rats were randomly divided into two orthodontic retention groups: one without (control) and the other with LiCl treatment (LiCl group). Samples were collected on days 0, 3, 7 and 14 during the retention period. We evaluated the bone volume/total volume (BV/TV) ratio and new bone formation in the region of interests (ie, the root, the periodontal ligament and the adjacent alveolar bone around the distal buccal surface of the distal root of the maxillary first molar)...
July 3, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28670520/analysis-of-transforming-growth-factor-%C3%AE-1-expression-in-resorptive-lacunae-following-orthodontic-tooth-movement-in-an-animal-model
#12
Massoud Seifi, Bahram Kazemi, Sattar Kabiri, Mohammadreza Badiee
OBJECTIVE: Root resorption is a complication of orthodontic treatment and till date, there is a dearth of information regarding this issue. The aim of this study was to determine whether the expression of transforming growth factor-β1 (TGF-β1, an inflammatory cytokine) is related to orthodontic force. Moreover, if associated, the expression level may be helpful in differential diagnosis, control and ultimate treatment of the disease. MATERIALS AND METHODS: In this experimental study, a total of 24 eight-week-old male Wistar rats were selected randomly...
July 2017: Cell Journal
https://www.readbyqxmd.com/read/28665850/displacement-of-a-broken-dental-injection-needle-into-the-perivertebral-space
#13
Bayram Sahin, Senem Yildirimturk, Yigit Sirin, Bora Basaran
Dental injection needle breakage is an uncommon problem in dental practice. Displacement of the broken fragment into anatomical spaces is, on the other hand, a serious complication that occurs most commonly during inferior alveolar nerve blocks as a result of material wear, incorrect application of the anesthesia technique, or sudden movement of the patient during injection. Further complications such as infection, trismus, and nerve paralysis may exacerbate the condition and, if not treated adequately, life-threatening conditions may develop over time as the fragment dislodges deeper in soft tissues...
July 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28658933/intraoral-approaches-for-maxillary-molar-distalization-case-series
#14
Devinder Preet Singh, Shefali Arora, Sumit Kumar Yadav, Neal Bharat Kedia
Correction of Class II malocclusion by distalization of maxillary molars with intraoral appliances is a non-extraction treatment approach, which has been described as an alternative to Head Gear. From the past few years, the procedures have undergone rectification to achieve treatment objective more precisely. This has been made possible by a better understanding of bone physiology, tooth movement, biomechanics and newer biomaterials. Nowadays newer distalizing appliances, like the Jones Jig, Lokar distalizer and Carrière distalizer, have been developed which have compact designs and cause minimal discomfort to the patient...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28653350/zoledronic-acid-and-alendronate-sodium-and-the-implications-in-orthodontic-movement
#15
J S Franzoni, F M P Soares, E Zaniboni, M Vedovello Filho, M P Santamaria, G M T Dos Santos, M A M Esquisatto, M Felonato, F A S Mendonca, C M Franzini, M Santamaria
OBJECTIVE: To evaluate orthodontic tooth movement (OTM) in rats treated with two types of bisphosphonates (BPs), alendronate sodium (A) and zoledronic acid (Z). DESIGN: In all, 15 male Wistar rats were randomly divided into three groups. Group OTM+A: orthodontic tooth movement and subcutaneous administration of alendronate sodium (2.5 mg/kg); Group OTM+Z: orthodontic tooth movement and subcutaneous administration of zoledronic acid (0.02 mg/kg), and Group OTM: orthodontic tooth movement and subcutaneous injection of saline...
June 27, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28651769/mesiodistal-dental-movement-toward-remodeled-edentulous-alveolar-ridge-digital-model-assessment
#16
Francyle Simões Herrera Sanches, Patrícia Bittencourt Dutra Dos Santos, Marcos Cezar Ferreira, Karina Maria Salvatore Freitas, José Fernando Castanha Henriques, Guilherme Janson, Daniela Garib
INTRODUCTION: The aims of this study were to compare the changes in posterior dental inclination and angulation, and the posterior tooth crown sizes and alveolar ridge thicknesses consequent to the orthodontic procedures of closing and opening of mandibular first molar edentulous spaces. METHODS: The sample comprised 16 patients (4 men, 12 women) with an initial mean age of 34.17 years and unilateral or bilateral absence of mandibular permanent first molars. The space closure group (SCG) comprised 12 hemiarches with a mandibular first molar edentulous space varying from 2 to 7 mm, orthodontically treated with space closure...
July 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28651768/elevation-of-a-full-thickness-mucoperiosteal-flap-alone-accelerates-orthodontic-tooth-movement
#17
Kelly M Owen, Phillip M Campbell, Jian Q Feng, Paul C Dechow, Peter H Buschang
INTRODUCTION: Our objective was to determine whether the elevation of a full-thickness mucoperiosteal flap alone, without cortical cuts, decreases the amount of bone around teeth and accelerates mesial tooth movements. METHODS: The mandibular second premolars of 7 beagle dogs were extracted, and on a randomly selected side, a full-thickness mucoperiosteal buccal flap extending from the distal aspect of the third premolar to the mesial aspect of the first premolar was elevated...
July 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28651765/gingival-crevicular-fluid-bone-turnover-biomarkers-how-postmenopausal-women-respond-to-orthodontic-activation
#18
Sorapan Smuthkochorn, J Martin Palomo, Mark G Hans, Corey S Jones, Leena Palomo
INTRODUCTION: Bone turnover associated with orthodontic tooth movement is evidenced by increased bone turnover markers in gingival crevicular fluid (GCF). Postmenopausal women have an increased concentration of serum bone turnover markers. The filtrate of this serum makes up GCF, but little is known of the bone turnover around teeth in this cohort. The objective of this investigation was to compare the GCF bone turnover markers in premenopausal vs postmenopausal women receiving orthodontic treatment at baseline and at orthodontic activation...
July 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28647773/cthrc1-promotes-osteogenic-differentiation-of-periodontal-ligament-stem-cells-by-regulating-taz
#19
Chengze Wang, Weiting Gu, Baiyu Sun, Yunpeng Zhang, Yawen Ji, Xin Xu, Yong Wen
Collagen triple helix repeat containing 1 (CTHRC1) is associated with bone metabolism. Alveolar bone has an ability to rapidly remodel itself to adapt its biomechanical environment and function. However, whether CTHRC1 is expressed in alveolar bone tissue and the role of CTHRC1 in alveolar bone remodeling remain unclear. We used orthodontic tooth movement (OTM) rat model to study the effects of CHTRC1 in alveolar bone remodeling in vivo. We found that CTHRC1 was expressed in normal physiological condition of osteocytes, bone matrix, and periodontal ligament cells in rat...
August 2017: Journal of Molecular Histology
https://www.readbyqxmd.com/read/28646819/invisalign-with-photobiomodulation-optimizing-tooth-movement-and-treatment-efficacy-with-a-novel-self-assessment-algorithm
#20
Todd E Dickerson
No abstract text is available yet for this article.
March 2017: Journal of Clinical Orthodontics: JCO
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