Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"lower jaw"”.
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A Rodent Animal Model for Forelimb to Lower Jaw Reorganization in Primary Somatosensory Cortex (SI) Barrel Field
… to previously unexpressed input from the lower jaw; here, we define this phenomenon as hand-to-face cortical reorganization. In this dissertation, electrophysiological mapping of SI was used to examine hand-to-face cortical reorganization in the FBS. Immediately following each type of …
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Biological Concept for Implant Treatment of Completely Toothless Lower Jaw with Fixed Implant-Supported Prostheses // Биологична концепция за имплантологично лечение на изцяло обеззъбена долна челюст с неснемаеми протезни конструкции
… to confirm that during treatment of edentulous lower jaw with fixed implant-retained rigid prostheses, the mandibular flexure during function has a negative influence of the peri-implant bone, and along with that to create an algorithm for the quantity and positioning of the implants and the …
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Effect of extraction time and impaction type on complication after extraction of lower third molars
The impaction type of the third molar in the lower jaw is classified in various ways. This suggests that flap elevation tooth and bone cutting and time of extraction depends on the degree of impaction in the third molar of the lower jaw and thus they affect the complication after extraction. …
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Genexpression während der Zahnentwicklung der Maus (Mus musculus)
… mice (Mus musculus) The development of teeth and jaw bones are lead by mechanisms that determine cells to become, teeth, bones or cartilages. The ectomesenchymal cells of the lower jaw receives signals from overlying epithelium to differentiate into odontoblasts, osteoblasts and chondrocytes. …
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Kephalometrische und histomorphometrische Auswirkungen des LTBP-1-Knockouts bei Mäusen
… on the bone development concerning the head and Lower jaw of the mouse. The results of this study should provide an insight into in vivo functions of the protein LTBP-1.
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Factors Affecting the Primary Stability of the Intraosseous Screw Type Implants /// Фактори повлияващи първичната стабилност на интраосалните винтови имплантати
… ribs and into 3D-printed simulation models of lower jaw, was performed. Stability was assessed by the following methods: measurement of maximum insertion torque (MIT), damping capacity and resonance frequency analysis, and heat generation during the insertion of implants recorded by a thermal …
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A Study on etiologic factors for tooth extraction and extraction age of patients visiting a university hospital dental clinic in suwon
… in female(30.7%). 4. In comparison of upper and lower jaw, both jaws were prevailed by periodontal diseases. and the extraction by radicular cyst was prevalent in lower jaw(7.9%) in contracst to upper jaw(3.4%). 5. According to tooth type, all extracted teeth was caused by periodontal diseases …
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Gene Discovery In Nonsyndromic Cleft Lip With Or Without Cleft Palate
… Morpholino knockdown of crispld2 resulted in a lower survival rates and altered neural crest cell (NCC) clustering. Because NCCs form the tissues that populate the craniofacies, this NCC abnormality resulted in cartilage abnormalities of the jaw including fewer ceratobranchial cartilages forming …
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Big Brains and Small Teeth: a primate comparative approach to dental and mandibular reduction in hominins
… acted as a constraint on the development of the lower jaw. In this work, a primate perspective was adopted to clarify the relative influence of adaptive and non-adaptive factors on mandibular and dental reduction in the genus Homo. The effect of diet and structural constraints (allometry and …
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Comparative Morphology and Macroevolution of the Avian Quadrate
… birds, the quadrate acts as a hinge between the lower jaw and the skull, playing an important role in cranial kinesis. Therefore, the evolution of avian quadrate morphology presumably has been influenced by selective pressures related to feeding. Owing to its complex and variable morphology, the …
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Axial patterning of the chondrichthyan pharyngeal endoskeleton and the origin of the jaw
… anatomical hypotheses propose that the upper and lower jaw evolved through modification of dorsal and ventral gill arch skeletal elements, respectively. These hypotheses were based largely on the skeletal anatomy of chondrichthyans (sharks, skates and holocephalans), but remain largely untested …
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Fünfjährige Ergebnisse der verzögerten Sofortbelastung von fünf Implantaten im zahnlosen Unterkiefer : eine retrospektive klinische Studie
… submerged healing, three to four months in the lower and four to six months in the upper jaw before loading. Within this study ten edentulous patients were treated with each five machined-surface Brånemark implants in the lower jaw. After a healing period of up to 20 days, the implant supported …
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Phenotypic Plasticity of Oral Jaw Dentition in Archosargus Probatocephalus
… prey items. Additionally, the mean functional jaw surface area, the percentage of tooth coverage of functional jaw surface, number of teeth per jaw, correlation between standard length and mean total tooth height, and the combined surface area of the teeth, when compared between the two …
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Patterns and process during the diversification of the cichlid fishes in Lake Malawi, Africa
… states. A geometric morphometric analysis of the lower jaw of these taxa revealed that the repeated differentiation of jaw morphology is associated with species habitat preference. Finally, I used AFLP data to reconstruct the evolution of species within three genera of sand dwelling cichlids that …
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Changes in morphological disparity in eutherian mammals across the K-Pg boundary and Palaeocene-Eocene Thermal Maximum using discrete morphofunctional characters
… discrete character traits of the dentition and lower jaw are identified that reflect morphofunctional attributes but that do not take into account specific homologies (e.g. the particular dental locus), and which should more accurately reflect ecomorphological disparity. These characters are …
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Integrating morphological data from fossil and living species and the early evolution of ray-finned fishes (Actinopterygii)
… of a new species of ray-finned fish based on lower jaw specimens collected from the Late Triassic Thunderstorm Ridge locality in Petrified Forest National Park, Arizona, USA. Placing this new animal into the context of an exceptionally preserved assemblage of fishes provides critical …
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Cone Beam Computed Tomography - radiation dose and image quality assessments
… posterior mandible and examinations of impacted lower third molars and retained upper cuspids. It varied between 11-77 μSv. Radiation dose should be evaluated together with image quality. Images of a skull phantom were obtained with both units varying tube voltage, tube current, degree of …
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Application of a multi-method approach to the stock identification and discrimination of kingklip, Genypterus capensis (Smith, 1847), off the South African coast
… were observed in four morphological (upper jaw, lower jaw, orbital diameter, and interorbital diameter), but not in any meristic characteristics. Univariate and multivariate analyses indicated that four (rectangularity, roundness, ellipticity, and aspect ratio) of the six otolith shape …
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THE MANY FACES OF REGENERATION: ENGINEERING MULTIFUNCTIONAL SCAFFOLDS FOR CRANIOMAXILLOFACIAL APPLICATIONS
A mandibular bone defect is a part of the lower jaw where bone is missing. People affected by large mandibular defects face consequences that go far beyond esthetics. For example, they often struggle to chew or speak, and this can affect daily life and overall well-being. Mandibular defects can …
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Feeding ecomorphology in angelfishes, f. Pomacanthidae: the implications of functional innovations on prey-dislodgement in biting reef fishes
… and suspensorial rotation coincide during jaw protrusion, and augment mandible protrusion to increase head length typically by 30%. Jaw closure at peak jaw protrusion appears to result from contraction of the adductor mandibulae segment A2, the only segment with insertions facilitating …