Orthodontic retainers are used after tooth braces to avoid any shifting. Orthodontists advise wearing a retainer for a year after braces are removed, and each is custom-made to fit the patient's mouth.

No one knows who came up with the idea of squeezing oranges to make orange juice, but oday, many people start their day with a glass of OJ. Take a look at the journey from tree to breakfast! #ScienceChannel #HowItsMade

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