fluoride

"The prisoners were kept in a secure compound. "

"The court returned a sentence of guilt in the first charge, but innocence in the second."

"Before going to school, I brushed my teeth with toothpaste. "

"The board recommends Philips, given his ample experience in similar positions."

"strengthen a muscle"

"The box contains my old toys. "

"My sister goes to the dentist every six months for a checkup and cleaning. "

"The fertilizer contained potassium to help the plants grow stronger. "

"I brush my teeth regularly to prevent them from turning yellow."

"Because fluorine is so reactive, it is often used to create stronger compounds like those found in Teflon and some toothpastes. "

"The dentist found two small cavities in my back teeth. "

"The teacher gave a good example of a sentence using the past tense. "