Abstract
SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
Smile with beautiful natural teeth is one of the greatest assets of a person. Untreated fractured teeth can affect day to day activities of children in school which can have a psychological impact on children. Apart from dental caries and periodontal diseases, a traumatic dental injury is the third most common cause of tooth loss. Violence, accidents, falls and sport-related activities are the leading causes of traumatic dental injuries, that majorly involve anterior teeth. Epidemiological studies indicate that dental trauma is a significant problem in young people and that soon, it will be a major dental health care requirement. Prevalence of traumatic dental injury in primary and permanent dentition ranges from 9.4-41.6% and 1% to 58.6%, respectively. The management of traumatic injuries to anterior teeth is also changing with advances in materials sciences and understanding of the mechanism of traumatic injuries.
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Authors:Bentham Science Books