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  • 1
    Electronic Resource
    Electronic Resource
    Oral injury and mouthguard usage by athletes in Japan (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Dental traumatology 14 (1998), S. 0 
    Details
    ISSN: 1600-0595
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— The use of mouthguards in contact sports effectively prevents oral injury and preserves oral structures. We investigated oral injuries and awareness concerning mouthguards ainong Japanese high school soccer and rugby players. Athletes were asked a series of questions concerning their history of oral injury while participating in sports, and their pattern of mouthguard use was determined. The data were evaluated statistically using chi-square analysis. The incidence of oral injuries was 32.3% for soccer athletes and 56.5% for rugby athletes, with 0.8% and 24.1% of the respective groups having mouthguards. There were sigmficant differences between the soccer and rugby groups (p〈0.001). Although 81.8% of soccer athletes thought mouthguards were unnecessary, only 26.2% of rugby athletes shared this opinion and there was a sigmficant difference between the soccer and rugby groups. Many soccer ath-letes had insufficient knowledge about mouthguards and were not concerned about preventing oral injury, although it was in fact a common problem in their sport. Athletes as well as coaches must be made aware of the high risk of oral injury when playing soccer, rugby, and other contact sports.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-9657.1998.tb00816.x
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  • 2
    Electronic Resource
    Electronic Resource
    Mouth guard for athletes during orthodontic treatment (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Dental traumatology 13 (1997), S. 0 
    Details
    ISSN: 1600-0595
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Mouth guards have been proven to greatly reduce the number and severity of traumatic dental injuries to participants in contact sports. However, there are some difficult problems in making month guards for athletes with orthdontic appliances on their teeth. We developed a method of making mouth guards by using a coating material for such athletes to prevent dental and oral sports injuries and to protect the orthodontic appliances. This mouth guard fits well and does not damage the appliances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-9657.1997.tb00008.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A study of sports-related mandibular angle fracture: relation to the position of the third molars (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 8 (1998), S. 0 
    Details
    ISSN: 1600-0838
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Sports Science
    Notes: Mandibular angle fractures have been considered attributable to the presence of unerupted third molars. We examined the relationship between the incidence of sports-related mandibular angle fractures and the presence of a mandibular third molar with emphasis on the position of the third molar. The incidence of angle fracture was significantly higher in the sports-related injury group than in the group with fracture due to other causes (P〈0.05). The incidence of angle fracture in the athletes with higher impaction scores was significantly higher than that in the subjects with higher scores who did not have sports-related fractures (P〈0.05). The percentage of rugby athletes with third molars was significantly higher than that of those without third molars (P〈0.001), and a high proportion of young athletes (89.5%) was considered to belong to a potential high-risk group for angle fractures. Our findings suggest that mandibular angle fractures are influenced by the presence and characteristics of the third molar in sports-related injuries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0838.1998.tb00178.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    INFLUENCE OF TRANSFORMATION-INDUCED CRACK CLOSURE ON SLOW FATIGUE CRACK GROWTH UNDER VARIABLE AMPLITUDE LOADING (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 18 (1995), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Fatigue crack growth under constant and random loading conditions was investigated for a metastable austenitic-bainitic steel in comparison with a ferritic chromium steel at very low crack growth rates. Experimentally determined random crack growth was compared with linear Miner calculations on the basis of constant amplitude results. It was found that the measured crack growth rates in transforming material are a factor of 10 lower than the calculated values, whereas the difference is only a factor of 2 for the ferritic steel. The reason for the pronounced crack growth retardation in the metastable alloy is transformation of part of the austenitic phase into martensite in the stress field of the crack tip, accompanied by a volume increase and, consequently, residual compressive stresses. Rare high load cycles in the random sequence increase the closure level, which then leads to pronounced retardation of fatigue crack growth for the numerous successive low amplitude cycles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1995.tb00918.x
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  • 5
    Electronic Resource
    Electronic Resource
    Self-assembly formation of amphiphilic molecules mixed with photoreactive, aromatic unsaturated-acids: examination by light scattering (1995)
    Springer
    Colloid & polymer science 273 (1995), S. 579-583 
    Details
    ISSN: 1435-1536
    Keywords: hexadecyl-trimethylammonium hydroxide ; 2-indenecarboxylic acid ; dodecyldimethylamine oxide ; cinnamic acid ; light scattering ; micelle ; vesicle ; photocyclodimerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Light scattering measurement was carried out for aqueous solutions of amphiphilic molecules mixed with aromatic unsaturated carboxylic acids. Their structures are discussed according to sizes of molecular assemblies evaluated. In aqueous solutions of hexadecyltrimethylammonium hydroxide with 2-indenecarboxylic acid, short rodlike micelles were formed on mixing at a ratio of 1∶1. Particles in aqueous solutions of dodecyldimethylamine oxide and cinnamic acid varied from micelles to vesicles with increasing cinnamic acid concentration. The structures were related to the effective photocyclodimerization of olefins and the stereochemical selectivity of cyclodimers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00658688
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    Paper (German National Licenses)
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