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Mandibular Disorders

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https://www.readbyqxmd.com/read/27908672/forensic-age-estimation-in-anti-piracy-trials-in-seychelles-experiences-and-challenges-faced
#1
S A Gunawardena, U A Liyanage, J B Weeratna, N D N A Mendis, H J M Perera, R W Jayasekara, R Fernando
Forensic age estimation (FAE) was conducted using a multifactorial method on thirteen Somali detainees claiming juvenile status during the anti-piracy trials of the Seychelles Supreme Court in 2014/2015. A multidisciplinary team, comprising of four of the authors covering specialties in forensic medicine, forensic odontology and radiology, conducted the FAE using a five-stage protocol. Each detainee was interviewed with an interpreter and examined for disorders affecting dental/skeletal development and for assessment of genital development through Tanner staging...
November 14, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27908573/does-the-age-of-a-patient-affect-the-outcome-of-temporomandibular-joint-arthroscopic-surgery
#2
Jungsuk Cho, Howard Israel
PURPOSE: Although temporomandibular joint (TMJ) disorders encompass all age groups, it is generally considered to affect young to middle-age adults. The aim of this investigation was to study patients who met the criteria for TMJ arthroscopy and to determine whether there was a difference in outcomes between younger and older patients. MATERIALS AND METHODS: This was a retrospective chart review of patients who underwent TMJ operative arthroscopy. The primary variable studied was patient age...
November 9, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27903449/sex-differences-in-the-estrogen-dependent-regulation-of-temporomandibular-joint-remodeling-in-altered-loading
#3
Jennifer L Robinson, Katelyn Cass, Ross Aronson, Thomas Choi, Manshan Xu, Ryan Buttenbaum, Hicham Drissi, Helen H Lu, Jing Chen, Sunil Wadhwa
OBJECTIVE: Temporomandibular joint (TMJ) diseases predominantly afflict women, suggesting a role of estrogen in the disease etiology. Previously, we determined that decreased occlusal loading (DOL) inhibited collagen type II (Col2) expression in the mandibular condylar cartilage (MCC) of female wild-type (WT) mice whereas no change was observed in males. This decrease in chondrogenesis was abolished by estrogen receptor beta (ERβ) deficiency in females. Therefore, the goal of this study was to examine the role of estradiol - ERβ signaling in mediating DOL effects in male mice to further decipher sex differences...
November 26, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27867065/condylar-resorptions-and-orthodontic-surgical-treatment-state-of-the-art
#4
Joël Ferri, Romain Nicot, Jean-Michel Maes, Gwénael Raoul, Ludovic Lauwers
Resorption of the mandibular condyle [RMC] is a disease of the temporomandibular joints, with multifactorial origins. The clinical manifestations take the form essentially of joint pain and occlusal disorders, depending on the rate at which the condyle is affected. X-ray imaging shows that the condyle is reduced in volume, flattened and displaced backwards, with loss of cortical substance in advanced forms. The aim of this article is to recall some pathophysiological features and then to review all the diagnostic and etiological factors and discuss possible modes of management...
November 17, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27855674/disk-displacement-eccentric-condylar-position-osteoarthrosis-misnomers-for-variations-of-normality-results-and-interpretations-from-an-mri-study-in-two-age-cohorts
#5
Jens C Türp, Anna Schlenker, Johannes Schröder, Marco Essig, Marc Schmitter
BACKGROUND: Clinical decision-making and prognostic statements in individuals with manifest or suspected temporomandibular disorders (TMDs) may involve assessment of (a) the position of articular disc relative to the mandibular condyle, (b) the location of the condyle relative to the temporal joint surfaces, and (c) the depth of the glenoid fossa of the temporomandibular joints (TMJs). The aim of this study was twofold: (1) Determination of the prevalence of these variables in two representative population-based birth cohorts...
November 17, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27849244/influence-of-generalized-joint-hypermobility-on-temporomandibular-joint-and-dental-occlusion-a-cross-sectional-study
#6
Lais Chiodelli, Andrielle de Bitencourt Pacheco, Taiane Secretti Missau, Ana Maria Toniolo da Silva, Eliane Castilhos Rodrigues Corrêa
Purpose: To evaluate the dental occlusion and temporomandibular joint in women with and without generalized joint hypermobility. Methods: Generalized joint hypermobility was assessed by the Beighton score. Individuals were divided into two groups: with and without hypermobility. The Research Diagnostic Criteria for Temporomandibular Disorders was used to evaluate the temporomandibular joint. Dental occlusion was assessed according to Angle classification, overjet and overbite measures, presence of open bite or crossbite, pattern of disocclusion, and occlusal interference...
September 2016: CoDAS
https://www.readbyqxmd.com/read/27836445/-masticatory-system-and-maxillofacial-prosthesis-from-pathology-to-function-recovering
#7
S Vo Quang, J Dichamp
Maxillofacial prosthesis (MFP) can be defined as the art and science of esthetic and functional reconstruction of the facial bones, art because it uses hand-crafted and empirical rules, science because of its technical rigorism and its integration in medicine. MFP aims to multidisciplinary rehabilitate patients presenting with cutaneous and underlying structures defects, It also allows for functional speech and swallowing rehabilitation related to temporo-mandibular joint disorders. Whatever the origin, (traumatic, infectious ortumoral), surgical treatment of these TMJ disorders is usually not indicated in first-line...
November 8, 2016: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
https://www.readbyqxmd.com/read/27826882/mandibular-advancement-appliance-for-obstructive-sleep-apnea-treatment
#8
J Kostrzewa-Janicka, P Śliwiński, M Wojda, D Rolski, E Mierzwińska-Nastalska
A combination of abnormal anatomy and physiology of the upper airway can produce its repetitive narrowing during sleep, resulting in obstructive sleep apnea (OSA). Treatment of sleep-breathing disorder ranges from lifestyle modifications, upper airway surgery, continuous positive airway pressure (CPAP) to the use of oral appliances. A proper treatment selection should be preceded by thorough clinical and instrumental examinations. The type and number of specific oral appliances are still growing. The mandibular advancement appliance (MAA) is the most common type of a dental device in use today...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27821165/classification-and-characterization-of-class-iii-malocclusion-in-chinese-individuals
#9
Cai Li, Ying Cai, Sihui Chen, Fengshan Chen
BACKGROUND: Class III malocclusion is a maxillofacial disorder that is characterised by a concave profile and can be attributed to both genetic inheritance and environmental factors. It is a clinical challenge due to our limited understanding of its aetiology. Revealing its prototypical diversity will contribute to our sequential exploration of the underlying aetiological information. The objective of this study was to characterize phenotypic variations of Class III malocclusion via a lateral cephalometric analysis in a community of Chinese individuals...
November 7, 2016: Head & Face Medicine
https://www.readbyqxmd.com/read/27812777/acromegaly-clinical-features-at-diagnosis
#10
REVIEW
Lucio Vilar, Clarice Freitas Vilar, Ruy Lyra, Raissa Lyra, Luciana A Naves
BACKGROUND: Acromegaly is a rare and underdiagnosed disorder caused, in more than 95% of cases, by a growth hormone (GH)-secreting pituitary adenoma. The GH hypersecretion leads to overproduction of insulin-like growth factor 1 (IGF-1) which results in a multisystem disease characterized by somatic overgrowth, multiple comorbidities, physical disfigurement, and increased mortality. OBJECTIVE: This article aims to review the clinical features of acromegaly at diagnosis...
November 3, 2016: Pituitary
https://www.readbyqxmd.com/read/27810212/functional-anatomy-of-the-equine-temporomandibular-joint-collagen-fiber-texture-of-the-articular-surfaces
#11
K Adams, E Schulz-Kornas, B Arzi, K Failing, J Vogelsberg, C Staszyk
In the last decade, the equine masticatory apparatus has received much attention. Numerous studies have emphasized the importance of the temporomandibular joint (TMJ) in the functional process of mastication. However, ultrastructural and histological data providing a basis for biomechanical and histopathological considerations are not available. The aim of the present study was to analyze the architecture of the collagen fiber apparatus in the articular surfaces of the equine TMJ to reveal typical morphological features indicating biomechanical adaptions...
November 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27792797/genetic-polymorphisms-of-catechol-o-methyltransferase-association-with-temporomandibular-disorders-and-postoperative-pain
#12
Irena Mladenovic, Gordana Supic, Ruzica Kozomara, Slobodan Dodic, Nedeljka Ivkovic, Bojana Milicevic, Ivana Simic, Zvonko Magic
AIMS: To evaluate the association between catechol-O-methyltransferase (COMT) gene polymorphisms and temporomandibular disorders (TMD), TMD pain, psychosocial impairment related to TMD, and postoperative pain. METHODS: A total of 90 patients with a diagnosis of painful TMD and 92 matched controls were investigated for the presence of TMD, TMD pain, and psychosocial variables by the Research Diagnostic Criteria for TMD. In a prospective cohort study of 40 subjects who underwent extraction of at least one fully impacted mandibular third molar, subjects had 6 months post-surgery follow-up of postoperative pain...
October 2016: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/27786075/influence-of-the-mandibular-position-on-the-active-cervical-range-of-motion-of-healthy-subjects-analyzed-using-an-accelerometer
#13
Alberto Baldini, Alessandro Nota, Simona Tecco, Fabiana Ballanti, Paola Cozza
OBJECTIVE: The aim of this study is to analyze the influence of the mandibular positions (habitual rest position, habitual maximum intercuspation, habitual maximum intercuspation with clenching, and mandibular position with cotton rolls) on the active cervical range of motion (ROM) (flexion-extension, lateroflexions, rotations) using an accelerometer in a sample of healthy subjects. METHODS: A total of 21 (14 M, 7 F) healthy volunteers aged from 18 to 27 years (mean age 23...
October 27, 2016: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/27775805/craniofacial-morphology-and-airflow-in-children-with-primary-snoring
#14
V Luzzi, G Di Carlo, M Saccucci, G Ierardo, E Guglielmo, M Fabbrizi, A M Zicari, M Duse, F Occasi, G Conti, E Leonardi, A Polimeni
OBJECTIVE: Sleep-disordered breathing (SDB) is among the most common diseases and includes a group of pathological conditions that form a severity continuum from primary snoring (PS) to obstructive sleep apnea (OSA). SDB presents a multifactorial etiology and in children, it is often linked to adenotonsillar hypertrophy, which may lead to an alteration of the breathing pattern. Therefore, several studies hinted at the existence of a correlation between SDB and the alteration of craniofacial growth...
October 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27762604/focal-benign-disorders-of-the-pediatric-mandible-with-radiologic-histopathologic-correlation-mandibular-development-and-lucent-lesions
#15
Matthew R Plunk, Dolphine Oda, Shawn E Parnell, Jason N Wright, Bonnie L Cole, Ramesh S Iyer
OBJECTIVE: Lucent lesions of the pediatric mandible may present variably. Cysts, neoplasms, and developmental and inflammatory conditions have a host of possible causes. There is also substantial overlap in the imaging appearance of cysts and that of benign but locally aggressive tumors that need to undergo resection. CONCLUSION: The purpose of this article is to present common and uncommon lucent lesions of the mandible in children, with an emphasis on benign abnormalities...
October 20, 2016: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/27756109/separate-development-of-the-maxilla-and-mandible-is-controlled-by-regional-signaling-of-the-maxillomandibular-junction-during-avian-development
#16
Hye-Jin Tak, Tae-Jin Park, Zhenngu Piao, Sang-Hwy Lee
BACKGROUND: Syngnathia is a congenital craniofacial disorder characterized by bony or soft tissue fusion of upper and lower jaws. Previous studies suggested some causative signals, such as Foxc1 or Bmp4, cause the disruption of maxillomandibular identity, but their location and the interactive signals involved remain unexplored. We wanted to examine the embryonic origin of syngnathia based on the assumption that it may be located at the separation between the maxillary and mandibular processes...
October 18, 2016: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/27741141/a-subtle-mimicker-in-emergency-department-illustrated-case-reports-of-acute-drug-induced-dystonia
#17
Maria Vittoria De Angelis, Roberta Di Giacomo, Antonio Di Muzio, Marco Onofrj, Laura Bonanni
BACKGROUND: Movement disorder emergencies include any movement disorder which develops over hours to days, in which failure to appropriately diagnose and manage can result in patient morbidity or mortality.Movement disorder emergencies include acute dystonia: sustained or intermittent muscle contractions causing abnormal, often repetitive, movements. Acute dystonia is a serious challenge for emergency room doctors and neurologists, because of the high probability of misdiagnosis, due to the presence of several mimickers including partial seizures, meningitis, localized tetanus, serum electrolyte level abnormalities, strychnine poisoning, angioedema, malingering, catatonia, and conversion...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27716739/the-effect-of-a-functional-appliance-in-the-management-of-temporomandibular-joint-disorders-in-patients-with-juvenile-idiopathic-arthritis
#18
Gaetano Isola, Luca Ramaglia, Giancarlo Cordasco, Alessandra Lucchese, Luca Fiorillo, Giovanni Matarese
BACKGROUND: Patients affected by Juvenile Idiopathic Arthritis (JIA) may have several craniofacial growth disturbances and involvements at the temporomandibular joint (TMJ). The objectives of the present study were to evaluate the clinical effectiveness of functional therapy used to reduce asymmetry of mandibular growth and TMJ disorder in patients with JIA. METHODS: By a retrospective longitudinal design, a cohort of 54 patients with JIA (mean age, 13.2 ± 3.7 years; range, 5-17...
September 13, 2016: Minerva Stomatologica
https://www.readbyqxmd.com/read/27693294/assessment-of-axonal-excitability-properties-in-two-branches-of-the-human-facial-nerve
#19
Timothy J Eviston, Arun V Krishnan
BACKGROUND: Axonal excitability methods have an established role in determining the biophysical properties of human axons in the clinical setting. The translation and refinement of these techniques for application to the facial nerve is important for advancing the pathophysiological understanding of facial nerve disorders. Facial nerve disorders are common and debilitating, yet in most cases diagnosis is based on clinical judgment alone. The pathophysiology of most causes of facial palsy remains unclear...
December 1, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27672612/the-role-of-oral-physicians-in-predicting-the-risk-of-obstructive-sleep-apnea-a-case-control-study
#20
Reddy Lavanya, Dara Balaji Gandhi Babu, Sunandha Chavva, Mamatha Boringi, Shefali Waghray, Mounica Yeladandi
PURPOSE: Obstructive sleep apnea (OSA) is a common medical disorder with serious complications if untreated. Dentists play a vital role in the early diagnosis of this condition, thereby improving patients' prognoses. The purpose of this study was to identify patients with a high risk of OSA using simple cephalometric measurements in patients receiving routine dental care. MATERIALS AND METHODS: The present study was conducted on 206 patients divided into a high-risk group and a control group after answering the Berlin questionnaire...
September 2016: Imaging Science in Dentistry
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