Fresh concrete is perishable and will lose quality if it sits in the truck too long. ASTM C 94, Standard Specification for Ready Mixed Concrete, says that concrete should be discharged within 90 minutes and before 300 revolutions of the mixer after water has been added to the cement.
You can prevent cavities. Minerals in our saliva, such as calcium and phosphate, along with the protective fluoride that we can get from fluoride toothpaste or a fluoride rinse or in some cases from fluoridated tap water, can repair minerals and protect them from acid damage.
This kind of mouthwash contains fluoride compounds such as 0.05% Sodium Fluoride (NaF) which provides extra fluoride to the people who need it. Using it daily may give additional protection against tooth decay. Anti-plaque mouthwash. It inhibits plaque accumulation, thus reducing the chance of getting gingivitis (inflammation of the gums). The active ingredients include Chlorhexidine Gluconate, Triclosan, Thymol, Cetylpyridinium Chloride (CPC), etc. However, long term use of mouthwash may stain the teeth and alter taste sensation. You are advised to consult your dentist before use.