Composition. The most common types of glass fiber used in fiberglass is E-glass, which is alumino-borosilicate glass with less than 1% w/w alkali oxides, mainly used for glass-reinforced plastics.he first type of glass used for fiber was soda lime glass or A-glass (A for the alkali it contains). It is not very resistant to alkali. A new type, E-glass, was formed; this is an alumino-borosilicate glass that is alkali This was the first glass formulation used for continuous filament formation.
White patches are the main symptom of oral hairy leukoplakia. The patches are: White and âcorrugated,â or folded, in appearance. Hairy, hair-like growths come from the folds in the patches. Permanent, you canât remove the patches with a toothbrush or with another oral care tool.
Leukoplakia Causes. Reasons for leukoplakia are dependent on what type of leukoplakia â standard or hairy. Standard Leukoplakia. While the cause of leukoplakia is not known, the use of tobacco, including chewing and smoking, seems to be accountable for the majority of cases. 3 out of 4 users of tobacco products regularly will in due course cultivate leukoplakia in the area where the tobacco is held against the cheeks.