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https://www.readbyqxmd.com/read/28045824/neuropathic-pain-due-to-iatrogenic-lingual-nerve-lesion-nerve-grafting-to-reduce-otherwise-untreatable-pain
#1
Jop P Verweij, Kira S van Hof, Martijn J A Malessy, Richard van Merkesteyn
Iatrogenic lingual nerve lesion is a well-known and unfortunate complication after mandibular third molar removal. Occasionally, the nerve injury can cause severe neuropathic pain.Here, the authors present the history of 2 patients with lingual nerve injury due to mandibular third molar removal, and with severe neuropathic pain in the craniomandibular region. Pharmacotherapy and physiotherapy did not reduce the pain, and ultimately, the lingual nerve was surgically explored. Scar tissue and a lingual nerve neuroma were observed and resected in both patients...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28042446/correlation-between-dento-skeletal-characteristics-and-craniomandibular-disorders-in-growing-children-and-adolescent-orthodontic-patients-retrospective-case-control-study
#2
D DI Venere, R M Gaudio, A Laforgia, G Stefanachi, S Tafuri, F Pettini, F Silvestre, M Petruzzi, M Corsalini
PURPOSE: The aim of this retrospective case-control study was to identify, in a group of growing children and adolescents affected by malocclusion, specific dento-skeletal characteristics which could be correlated to the onset, in the above-mentioned subjects, of craniomandibular disorders (CMD). MATERIALS AND METHODS: Among the patients treated at the Paedodontics and Orthodontics department of Bari Dental School, we recruited a group of patients with malocclusion and symptoms of temporomandibular disorders, as an experimental group...
October 2016: Oral & Implantology
https://www.readbyqxmd.com/read/27929063/a-large-carnivorous-mammal-from-the-late-cretaceous-and-the-north-american-origin-of-marsupials
#3
Gregory P Wilson, Eric G Ekdale, John W Hoganson, Jonathan J Calede, Abby Vander Linden
Marsupial mammal relatives (stem metatherians) from the Mesozoic Era (252-66 million years ago) are mostly known from isolated teeth and fragmentary jaws. Here we report on the first near-complete skull remains of a North American Late Cretaceous metatherian, the stagodontid Didelphodon vorax. Our phylogenetic analysis indicates that marsupials or their closest relatives evolved in North America, as part of a Late Cretaceous diversification of metatherians, and later dispersed to South America. In addition to being the largest known Mesozoic therian mammal (node-based clade of eutherians and metatherians), Didelphodon vorax has a high estimated bite force and other craniomandibular and dental features that suggest it is the earliest known therian to invade a durophagous predator-scavenger niche...
December 8, 2016: Nature Communications
https://www.readbyqxmd.com/read/27870345/betwixt-and-between-intracranial-perspective-on-zygomatic-arch-plasticity-and-function-in-mammals
#4
Erin M Franks, Nathan E Holton, Jeremiah E Scott, Kevin R McAbee, Jason T Rink, Kazune C Pax, Adam C Pasquinelly, Joseph P Scollan, Meghan M Eastman, Matthew J Ravosa
The zygomatic arch is morphologically complex, providing a key interface between the viscerocranium and neurocranium. It also serves as an attachment site for masticatory muscles, thereby linking it to the feeding apparatus. Though morphological variation related to differential loading is well known for many craniomandibular elements, the adaptive osteogenic response of the zygomatic arch remains to be investigated. Here, experimental data are presented that address the naturalistic influence of masticatory loading on the postweaning development of the zygoma and other cranial elements...
December 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27853573/a-new-miocene-baleen-whale-from-the-peruvian-desert
#5
Felix G Marx, Naoki Kohno
The Pisco-Ica and Sacaco basins of southern Peru are renowned for their abundance of exceptionally preserved fossil cetaceans, several of which retain traces of soft tissue and occasionally even stomach contents. Previous work has mostly focused on odontocetes, with baleen whales currently being restricted to just three described taxa. Here, we report a new Late Miocene rorqual (family Balaenopteridae), Incakujira anillodefuego gen. et sp. nov., based on two exceptionally preserved specimens from the Pisco Formation exposed at Aguada de Lomas, Sacaco Basin, southern Peru...
October 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27812883/chronic-temporomandibular-disorders-disability-pain-intensity-and-fear-of-movement
#6
Alfonso Gil-Martínez, Mónica Grande-Alonso, Ibai López-de-Uralde-Villanueva, Almudena López-López, Josué Fernández-Carnero, Roy La Touche
BACKGROUND: The objective was to compare and correlate disability, pain intensity, the impact of headache on daily life and the fear of movement between subgroups of patients with chronic temporomandibular disorder (TMD). METHODS: A cross-sectional study was conducted in patients diagnosed with chronic painful TMD. Patients were divided into: 1) joint pain (JP); 2) muscle pain (MP); and 3) mixed pain. The following measures were included: Craniomandibular pain and disability (Craniofacial pain and disability inventory), neck disability (Neck Dsiability Index), pain intensity (Visual Analogue Scale), impact of headache (Headache Impact Test 6) and kinesiophobia (Tampa Scale of Kinesiophobia-11)...
December 2016: Journal of Headache and Pain
https://www.readbyqxmd.com/read/27615281/cranial-ontogeny-of-the-early-triassic-basal-cynodont-galesaurus-planiceps
#7
Sandra C Jasinoski, Fernando Abdala
Ontogenetic changes in the skull and mandible of thirty-one specimens of Galesaurus planiceps, a basal non-mammaliaform cynodont from the Early Triassic of South Africa, are documented. The qualitative survey indicated eight changes in the craniomandibular apparatus occurred during growth, dividing the sample into three ontogenetic stages: juvenile, subadult, and adult. Changes in the temporal region, zygomatic arch, occiput, and mandible occurred during the transition from the subadult to adult stage at a basal skull length of 90 mm...
September 12, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27599034/comparative-assessment-of-a-new-holistic-oriented-and-an-old-specialty-specific-undergraduate-curriculum-in-removable-prosthodontics-a-study-based-on-senior-students-perceptions
#8
Sofia Papadiochou, Eleni Kotsiomiti, Argirios L Pissiotis
PURPOSE: A survey was conducted in the Dental School, Aristotle University, Thessaloniki, Greece, (i) to assess the perceptions and experiences of senior dental students, Classes of 2014 and 2015, toward the old, specialty-specific (OC) and new, holistic-oriented (NC) undergraduate curriculum, respectively, in removable prosthodontics and (ii) to identify areas of improvement in prosthodontic training. MATERIALS AND METHODS: Structural components of both curricula were collected, including the total number of (i) laboratory/lecture/clinical training hours, (ii) written examinations, (iii) mandatory clinical cases, and (iv) European Credit Transfer and Accumulation System (ECTS) credits...
September 6, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27432747/fiber-bragg-grating-based-bite-force-measurement
#9
Sharath Umesh, Srivani Padma, Sundarrajan Asokan, Talabattula Srinivas
The present study reports an in vivo, novel methodology for the dynamic measurement of the bite force generated by individual tooth using a Fiber Bragg Grating Bite Force Recorder (FBGBFR). Bite force is considered as one of the major indicators of the functional state of the masticatory system, which is dependent on the craniomandibular structure comprising functional components such as muscles of mastication, joints and teeth. The proposed FBGBFR is an intra-oral device, developed for the transduction of the bite force exerted at the occlusal surface, into strain variations on a base plate, which in turn is sensed by the FBG sensor bonded over it...
July 1, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27207582/effect-of-mouthguards-on-impact-to-the-craniomandibular-complex
#10
Yuto Tanaka, Tsuyoshi Tsugawa, Yoshinobu Maeda
BACKGROUND: The aim of this study was to investigate the effect of wearing a mouthguard and teeth-clenching on impact to the head and temporomandibular joint (TMJ) during a blow to the jaw. MATERIAL AND METHODS: A custom-made mouthguard was fabricated for five participants. A 4.1-N impact load was applied to the chin with a pendulum. Two acceleration sensors were attached to the forehead and left TMJ. The amplitudes and durations of the accelerations were obtained under five conditions: mouth-open without mouthguard; light teeth-clenching without mouthguard; maximum voluntary clenching (MVC) without mouthguard; mouth-open with mouthguard and MVC with mouthguard...
May 20, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27187611/molecular-characterization-of-three-canine-models-of-human-rare-bone-diseases-caffey-van-den-ende-gupta-and-raine-syndromes
#11
Marjo K Hytönen, Meharji Arumilli, Anu K Lappalainen, Marta Owczarek-Lipska, Vidhya Jagannathan, Sruthi Hundi, Elina Salmela, Patrick Venta, Eva Sarkiala, Tarja Jokinen, Daniela Gorgas, Juha Kere, Pekka Nieminen, Cord Drögemüller, Hannes Lohi
One to two percent of all children are born with a developmental disorder requiring pediatric hospital admissions. For many such syndromes, the molecular pathogenesis remains poorly characterized. Parallel developmental disorders in other species could provide complementary models for human rare diseases by uncovering new candidate genes, improving the understanding of the molecular mechanisms and opening possibilities for therapeutic trials. We performed various experiments, e.g. combined genome-wide association and next generation sequencing, to investigate the clinico-pathological features and genetic causes of three developmental syndromes in dogs, including craniomandibular osteopathy (CMO), a previously undescribed skeletal syndrome, and dental hypomineralization, for which we identified pathogenic variants in the canine SLC37A2 (truncating splicing enhancer variant), SCARF2 (truncating 2-bp deletion) and FAM20C (missense variant) genes, respectively...
May 2016: PLoS Genetics
https://www.readbyqxmd.com/read/26973986/-dissertations-25-years-after-date-45-prevalence-and-etiology-of-craniomandibular-dysfunction-in-the-netherlands
#12
REVIEW
R J A M de Kanter
The disorders temporomandibular dysfunction and craniomandibular dysfunction are still being discussed intensely in the literature 25 year after the publication of the dissertation 'Prevalence and etiology of craniomandibular dysfunction. An epidemiological study of the Dutch adult population'. Attention is especially being devoted to occlusion and its relationship with this disorder; the conclusions reached are often contradictory. In addition to the definitions of temporomandibular and craniomandibular dysfunction and of occlusion, a possible explanation for this controversy can be found in the methodological shortcomings of the studies...
March 2016: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/26913867/craniomandibular-system-and-postural-balance-after-3-day-dry-immersion
#13
Loïc Treffel, Liubov Dmitrieva, Guillemette Gauquelin-Koch, Marc-Antoine Custaud, Stéphane Blanc, Claude Gharib, Catherine Millet
The objective of the study was to determine the influence of simulated microgravity by exposure to dry immersion on the craniomandibular system. Twelve healthy male volunteers participated in a 3-day dry immersion study. Before and immediately after exposure we measured maximal bite force using piezoresistive sensors. The mechanical properties of the jaw and cervical muscles were evaluated before, during, and after dry immersion using MyotonPRO. Because recent studies reported the effects of jaw motor activity on the postural stability of humans, stabilometric measurements of center of pressure were performed before and after dry immersion in two mandibular positions: rest position without jaw clenching, and intercuspidal position during voluntary teeth clenching...
2016: PloS One
https://www.readbyqxmd.com/read/26763591/a-three-dimensional-free-body-analysis-describing-variation-in-the-musculoskeletal-configuration-of-the-cynodont-lower-jaw
#14
D A Reed, J Iriarte-Diaz, T G H Diekwisch
The evolution of the middle ear from the cynodont craniomandibular bones is one of the key mammalian innovations, and the mechanics underlying this anatomical transformation represents an intriguing paradox. Because the jaw joint of nonmammalian cynodonts was functionally coupled to the inner ear, auditory performance would favor low joint reaction forces. However, this could not be achieved at the expense of feeding performance, favoring high bite forces. The balance of these two seemingly incompatible performance criteria in the context of the morphological diversity of the cynodont lower jaw is poorly understood...
January 2016: Evolution & Development
https://www.readbyqxmd.com/read/26727210/withdrawn-stabilisation-splint-therapy-for-temporomandibular-pain-dysfunction-syndrome
#15
REVIEW
M Ziad Al-Ani, Stephen J Davies, Robin J M Gray, Philip Sloan, Anne-Marie Glenny
No abstract text is available yet for this article.
January 4, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/26692539/evolutionary-trends-in-the-jaw-adductor-mechanics-of-ornithischian-dinosaurs
#16
COMPARATIVE STUDY
Ali Nabavizadeh
Jaw mechanics in ornithischian dinosaurs have been widely studied for well over a century. Most of these studies, however, use only one or few taxa within a given ornithischian clade as a model for feeding mechanics across the entire clade. In this study, mandibular mechanical advantages among 52 ornithischian genera spanning all subclades are calculated using 2D lever arm methods. These lever arm calculations estimate the effect of jaw shape and difference in adductor muscle line of action on relative bite forces along the jaw...
March 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/26644786/cranial-treatment-and-spinal-manipulation-for-a-patient-with-low-back-pain-a-case-study
#17
Wayne Powell, Simone F C Knaap
OBJECTIVE: The purpose of this case study is to present chiropractic management of a patient with chronic low back pain by focusing on the craniomandibular system. CLINICAL FEATURES: A 37-year-old man consulted a chiropractor for pain in the lumbosacral area with radiation down the anterolateral side of the upper left leg. The symptoms started after a fall the previous year. Examination showed a post-traumatic chronic L4-L5 facet dysfunction and left sacro-iliac joint dysfunction...
March 2015: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/26466748/imaging-diagnosis-magnetic-resonance-imaging-features-of-craniomandibular-osteopathy-in-an-airedale-terrier
#18
Matej Matiasovic, Abby Caine, Elena Scarpante, Giunio Bruto Cherubini
An Airedale Terrier was presented for evaluation of depression and reluctance to be touched on the head. Magnetic resonance (MR) imaging of the head was performed. The images revealed bone lesions affecting the calvarium at the level of the coronal suture and left mandibular ramus, with focal cortical destruction, expansion, and reactive new bone formation. Skull lesions were hypointense on T1-weighted sequences, hyperintense on T2-weighted sequences, and showed an intense and homogeneous enhancement after gadolinium administration...
May 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/26446049/static-balancing-behaviour-of-the-mandible
#19
Daniel Hellmann, Fabian Brüstle, Sophia Terebesi, Nikolaos N Giannakopoulos, Lydia Eberhard, Peter Rammelsberg, Hans J Schindler
The objective of this study was to investigate the mechanisms of physiological control of the craniomandibular system during force-controlled biting: in intercuspation, restricted by predetermined anatomic-geometrical conditions [i.e. biting in intercuspation (BIC)]; and on a hydrostatic system [i.e. auto-balanced static equilibrium of the mandible (BAL)], in which the mandible is balanced under unrestricted occlusal conditions. For 20 healthy subjects, the spatial positions of the condyles, the lower molars, and the incisal point were measured, and the electromyographic (EMG) activity of the musculus masseter and musculus temporalis anterior were recorded bilaterally, during force-controlled biting (50, 75, 100 N) on a hydrostatic device...
December 2015: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/26363460/comparisons-of-chewing-rhythm-craniomandibular-morphology-body-mass-and-height-between-mothers-and-their-biological-daughters
#20
Catherine Cho, Ke'ale Louie, Ahmed Maawadh, Geoffrey E Gerstner
OBJECTIVE: To study and compare the relationships between mean chewing cycle duration, selected cephalometric variables representing mandibular length, face height, etc., measured in women and in their teenage or young-adult biological daughters. DESIGN: Daughters were recruited from local high schools and the University of Michigan School of Dentistry. Selection criteria included healthy females with full dentition, 1st molar occlusion, no active orthodontics, no medical conditions nor medication use that could interfere with normal masticatory motor function...
November 2015: Archives of Oral Biology
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