13 Ergebnisse.

We live in this universe. Hence, it is essential to understand the origin, evolution and ultimate fate of the universe. This can be, effectively, done by constructing mathematical models of the universe, using Einstein's theory of gravitation and other modified theories of gravitation. The models, thus, obtained can be compared with the present day observations, to decide about the shape, physics, and origin of the universe. With this motivati...

Amit Prakash draws on extensive archival materials to understand the colonial legacy of how minority populations have been policed in twentieth century Paris, showing how colonial racism was integrated into the policing of Paris, and that architecture, urbanism, and social housing contributed to this legacy.

The term jaw expansion refers to "widening" of the back teeth. In general, the upper set of teeth should fit around (outside) the lower set of teeth. As such, the upper jaw should be "wider" than the lower jaw. The upper jaw is usually the one undergoing expansion. Expanders can be fixed or removable. Fixed expanders are generally preferred over removable appliances, because removable appliances require patient cooperation to be successful. Th...

Having a clear vision for what a healthy occlusal outcome for dentistry is priceless, and the same is true for occlusal therapy. This clear vision, along with defined goals, will allow the clinician to make clear decisions during diagnosis. It will also allow the professional to measure results at the end of treatment, as well as address the severe and rampant problem of occlusal disease. The Golden Rules of Occlusion are clear, simple, scient...

Myogenous temporomandibular disorders (or masticatory myalgia) are characterized by pain and dysfunction that arise from pathologic and functional processes in the masticatory muscles. Associations between certain malocclusions and TMD were found in some studies, whereas the majority failed to identify significant and clinically important associations. TMD could not be correlated to any specific type of malocclusion, and there was no support f...

Retention is the phase of orthodontic treatment which maintains the teeth in their orthodontically corrected positions following the cessation of active orthodontic tooth movement. Orthodontic retainers resist the tendency of teeth to return to their pre-treatment positions under the influence of periodontal, occlusal and soft tissue forces, and continuing dentofacial growth. Very few prospective controlled studies have evaluated the effective...

Orthodontic anchorage is defined as resistance to unwanted tooth movement. During orthodontic treatment the teeth are exposed to forces and moments, and these acting forces always generate reciprocal forces of the same magnitude but opposite in direction. To avoid unwanted tooth movements and maintain treatment success, these reciprocal forces must be diverted. Orthodontic anchorage, defined as the ability to resist these unwanted reactive too...

Research is a scientific and systematic search for pertinent information on a specific topic. In fact, research is an art of scientific investigation. Research is an academic activity and as such the term should be used in a technical sense. Research comprises defining and redefining problems, formulating hypothesis or suggested solutions, collecting, organising and evaluating data, making deductions and reaching conclusions, and at last caref...

Medically compromised children and adults are increasingly likely to seek orthodontic care as improved medical management creates more long-term survivors. Orthodontic treatment is often considered to be completely noninvasive procedure but if orthodontic treatment is to benefit a medically compromised patient, the advantages it offers should outweigh any possible damage it may cause. It is important to assess the risks of treatment as well as...

Functional appliances are considered to be primarily orthopedic tools to influence the facial skeleton of the growing child in the condylar and sutural areas. All functional appliances take advantage of interaction between mechanical function and morphologic pattern and use common mechanisms of bone turnover, rhythm, activation, resorption, and formation for their action.These effects are produced because of their ability to alter the stomatog...

This finite element study was conducted to calculate the distribution of stresses on root surfaces when a orthodontic force of 2N was applied at different degrees namely 0 degree, 30 degree and 45 degree to the horizontal plane. An in-vitro finite element method was used to construct a three dimensional finite element model of a mandibular arch (without first premolars). Mechanical properties like Young's modulus of elasticity and Poisson's ra...

Condylar head inclination proved to be the most significantly correlated condylar characteristics to facial morphology. Hypodivergent pattern is dominant in Class II malocclusion. Symphysis width dimension also vary in different Class II malocclusion.SBL-PNS, Y -axis, Facial -Axis, PFH/AFH X100, Bjork sum and Symphseal width are significant parameters which discriminate between groups. Horizontal facial morphology was seen in 45 % of cases, ve...

Orthodontics and Dentofacial Orthopedics is the first speciality in dentistry. The objective of this textbook of Orthodontics is to provide a comprehensive review of this subject that is accessible to students especially post-graduates. Every-day we learn something new through our clinical exposure in this field. With time and experience orthodontists learn many technique adjuncts that work for them and which facilitate the clinical treatment ...