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https://www.readbyqxmd.com/read/28810237/tooth-wear-inclination-in-great-ape-molars
#1
Jordan Knight-Sadler, Luca Fiorenza
Primate dietary diversity is reflected in their dental morphology, with differences in size and shape of teeth. In particular, the tooth wear angle can provide insight into a species' ability to break down certain foods. To examine dietary and masticatory information, digitized polygon models of dental casts provide a basis for quantitative analysis of wear associated with tooth attrition. In this study, we analyze and compare the wear patterns of Pongo pygmaeus, Gorilla gorillagorilla and Pan troglodytes schweinfurthii lower molars, focusing on the degree of inclination of specific wear facets...
August 16, 2017: Folia Primatologica; International Journal of Primatology
https://www.readbyqxmd.com/read/28809370/marsupialization-facilitates-movement-of-the-cystic-lesion-associated-deeply-impacted-mandibular-third-molar-in-spite-of-its-mature-roots
#2
R Sun, Y Cai, Y Wu, J-H Zhao
BACKGROUND: The odontogenic cystic lesions happened in the angle and ramus region are frequently associated with impacted mandibular third molars. The treatment plan was difficult to work out for the huge cystic lesions with deeply impacted third molars, since the enucleation with simultaneously removing the deeply impacted teeth may cause serious complications. Therefore, the marsupialization of the cystic lesions followed by enucleation with tooth removal has also been advocated. The aim of this study was to explore the movement of cystic lesion-associated deeply impacted mandibular third molars (IMTM) after marsupialization...
August 15, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28806378/gummy-smile-correction-using-lingual-orthodontics-and-augmented-corticotomy-in-extremely-thin-alveolar-housing
#3
Kyung-Yen Nahm, Seung-Yun Shin, Hyo-Won Ahn, Seong-Hun Kim, Gerald Nelson
BACKGROUND: Tooth movement out of anatomic limitations was assisted by augmented corticotomy using deproteinized bovine bone mineral. METHODS: Lip protrusion can be reduced by premolar extraction followed by retraction of the anterior teeth. Surgical intervention is appropriate when the alveolar bone housing of the anterior region is insufficient for the tooth movement. In this patient, corticotomy in upper palatal area and anterior segmented osteotomy in the mandible were performed...
August 10, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28795233/bicarbonate-transport-during-enamel-maturation
#4
REVIEW
Kaifeng Yin, Michael L Paine
Amelogenesis (tooth enamel formation) is a biomineralization process consisting primarily of two stages (secretory stage and maturation stage) with unique features. During the secretory stage, the inner epithelium of the enamel organ (i.e., the ameloblast cells) synthesizes and secretes enamel matrix proteins (EMPs) into the enamel space. The protein-rich enamel matrix forms a highly organized architecture in a pH-neutral microenvironment. As amelogenesis transitions to maturation stage, EMPs are degraded and internalized by ameloblasts through endosomal-lysosomal pathways...
August 9, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28764922/tissue-specific-mineralization-defects-in-the-periodontium-of-the-hyp-mouse-model-of-x-linked-hypophosphatemia
#5
Benjamin R Coyac, Guillaume Falgayrac, Brigitte Baroukh, Lotfi Slimani, Jérémy Sadoine, Guillaume Penel, Martin Biosse-Duplan, Thorsten Schinke, Agnès Linglart, Marc D McKee, Catherine Chaussain, Claire Bardet
X-linked hypophosphatemia (XLH) is a dento-osseous disorder caused by inactivating mutations in the PHEX gene, leading to renal phosphate wasting and hypophosphatemia, and impaired mineralization of bones and teeth. In the oral cavity, recent reports suggest a higher susceptibility of XLH patients to periodontitis, where patients present with impaired tooth cementum - a bone-like tissue involved in tooth attachment to the jaw bones and post-eruption tooth positioning - and a higher frequency of intrabony defects...
July 29, 2017: Bone
https://www.readbyqxmd.com/read/28762860/intensive-strength-and-balance-training-with-the-kinect-console-xbox-360-in-a-patient-with-cmt1a
#6
Emanuela Pagliano, Maria Foscan, Alessia Marchi, Alice Corlatti, Giorgia Aprile, Daria Riva
BACKGROUND: Effective drugs for type 1A Charcot-Marie-Tooth (CMT1A) disease are not available. Various forms of moderate exercise are beneficial, but few data are available on the effectiveness of exercise in CMT1A children. AIM: To investigate the feasibility and effectiveness of exercises to improve ankle strength and limb function in a child with CMT1A. SETTING: Outpatient clinic. POPULATION: Nine-year-old boy with CMT1A...
August 1, 2017: Developmental Neurorehabilitation
https://www.readbyqxmd.com/read/28760288/surgery-first-approach-in-correcting-skeletal-class-iii-malocclusion-with-mandibular-asymmetry
#7
Hyeon-Shik Hwang, Min-Hee Oh, Hee-Kyun Oh, Heesoo Oh
This case report describes a surgical orthodontic case that used the recently introduced surgery-first approach to correct a severe skeletal Class III malocclusion. A 19-year-old woman presented with severe mandibular prognathism and facial asymmetry; she had been waiting for growth completion in order to pursue surgical correction. After prediction of the postsurgical tooth movement and surgical simulation, 2-jaw surgery that included maxillary advancement and differential mandibular setback was performed using a surgery-first approach...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28760282/rate-of-tooth-movement-and-dentoskeletal-effects-of-rapid-canine-retraction-by-dentoalveolar-distraction-osteogenesis-a-prospective-study
#8
Gökmen Kurt, Haluk İşeri, Reha Kişnişçi, Özkan Özkaynak
INTRODUCTION: The purpose of this study was to test the null hypothesis that duration of orthodontic treatment can be significantly reduced by accelerating canine retraction using dentoalveolar distraction (DAD). METHODS: Thirty-six maxillary canines of 19 patients comprised the DAD group, and 28 canines of 14 patients were included in the distalization group (DG). The initial mean ages were 15.8 ± 1.96 years for the DAD group and 16.02 ± 2.8 years for the DG...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28760279/risk-factors-for-tobacco-susceptibility-in-an-orthodontic-population-an-exploratory-study
#9
Jared Michael Jashinsky, Sandy Liles, Katy Schmitz, Ding Ding, Melbourne Hovell
INTRODUCTION: Tobacco use is related to increased periodontal disease, tooth loss, and decreased success of orthodontic appliances, and it may inhibit orthodontic tooth movement. Most smokers start during adolescence. Since most cessation attempts fail, prevention appears necessary. METHODS: A cross-sectional sample of orthodontic patients reported hypothesized risk factors for smoking and susceptibility to tobacco use initiation. Exploratory analyses regressed susceptibility to tobacco initiation on each hypothesized predictor variable in a separate logistic model that included a standard set of covariates...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28746484/obesity-and-orthodontic-treatment-is-there-any-direct-relationship
#10
Alberto Consolaro
Obesity is a wide-spread condition directly or indirectly connected with an increase in the prevalence of a variety of human diseases. It affects over 50% of the western overall population. In 2017, a thorough analysis of 204 studies on obesity and cancer revealed that the condition increases the risk of the following types of cancer: stomach, colon, rectal, bile duct, pancreatic, esophagus, breast, endometrial, ovarian, kidney and multiple myeloma. The first study aiming at establishing a connection between obesity and the rate of induced orthodontic tooth movement was conducted by Saloom et al; however, it could not effectively nor significantly reveal any direct influence or effect...
May 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28743370/computational-and-clinical-investigation-on-the-role-of-mechanical-vibration-on-orthodontic-tooth-movement
#11
Zhipeng Liao, Selma Elekdag-Turk, Tamer Turk, Johnathan Grove, Oyku Dalci, Junning Chen, Keke Zheng, M Ali Darendeliler, Michael Swain, Qing Li
The aim of this study is to investigate the biomechanics for orthodontic tooth movement (OTM) subjected to concurrent single-tooth vibration (50Hz) with conventional orthodontic force application, via a clinical study and computational simulation. Thirteen patients were recruited in the clinical study, which involved distal retraction of maxillary canines with 1.5N (150g) force for 12weeks. In a split mouth study, vibration and non-vibration sides were randomly assigned to each subject. Vibration of 50Hz, of approximately 0...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28740330/soft-tissue-molding-technique-in-cleft-lip-and-palate-patient-using-laser-surgery-in-combination-with-orthodontic-appliance-a-case-report
#12
Pornpat Theerasopon, Tasanee Wangsrimongkol, Sajee Sattayut
BACKGROUND: Although surgical treatment protocols for cleft lip and palate patients have been established, many patients still have some soft tissue defects after complete healing from surgical interventions. These are excess soft tissue, high attached fraena and firmed tethering scares. These soft tissue defects resulted shallowing of vestibule, restricted tooth movement, compromised periodontal health and trended to limit the maxillary growth. The aim of this case report was to present a method of correcting soft tissue defects after conventional surgery in cleft lip and palate patient by using combined laser surgery and orthodontic appliance...
March 31, 2017: Laser Therapy
https://www.readbyqxmd.com/read/28734941/sleep-chronic-pain-and-opioid-risk-for-apnea
#13
REVIEW
Serguei Marshansky, Pierre Mayer, Dorrie Rizzo, Marc Baltzan, Ronald Denis, Gilles J Lavigne
Pain is an unwelcome sleep partner. Pain tends to erode sleep quality and alter the sleep restorative process in vulnerable patients. It can contribute to next-day sleepiness and fatigue, affecting cognitive function. Chronic pain and the use of opioid medications can also complicate the management of sleep disorders such as insomnia (difficulty falling and/or staying asleep) and sleep-disordered breathing (sleep apnea). Sleep problems can be related to various types of pain, including sleep headache (hypnic headache, cluster headache, migraine) and morning headache (transient tension type secondary to sleep apnea or to sleep bruxism or tooth grinding) as well as periodic limb movements (leg and arm dysesthesia with pain)...
July 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28724930/assessment-of-different-techniques-for-3d-superimposition-of-serial-digital-maxillary-dental-casts-on-palatal-structures
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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