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.
The which, why, and how of mouthwashing with mouthwash. Using mouthwash is a good practice to do to maintain your oral health and to get rid of bad breath. It is effective in reaching the areas that the toothbrush can't reach such as in between the teeth, the back of the throat, and on the inside of the cheeks.