Clip is a B&W commercial for Gleem Toothpaste. 

Boy asks his father if he can go out to play. The father says "yes," but the mother quickly intervenes, asking whether the boy, her son, has brushed his teeth yet. The husband tries to convince his wife with a whiny tone if she'll allow their son to skip brushing just this once. The mother won't hear of it as she is worried about their son getting cavities. So she hands her son a tube of Gleem Toothpaste to get started brushing before he goes outside to play. 

To her husband, the woman says that brushing one's teeth keeps them clean and that clean teeth helps fights cavities. Convinced of his wife's judgement, the husband yells to his, "Wait for me, Johnny" - suggesting that he, the father, will brush his teeth, too. 

At the end of the commercial, the narrator says, "For fewer cavities, brush right - and use Super Action Gleem."