Every responsible parent should take their child to an orthodontic specialist for a check-up at the age of 6–7, even if there is no visible problem.

In addition to this:

• Children who breathe through their mouth or have adenoid problems
• Those who have used a pacifier for a long period of time
• Those with a thumb-sucking habit
• Those with a cleft lip or palate
• Those with missing teeth or who have suffered a strong blow to the jaw
• Children whose mother or father has a significantly protruded upper or lower jaw
• Cases observed as “buck teeth” (children whose upper front teeth are too far forward are at a much higher risk of breaking them in a fall)
• Children who have had early extraction of milk teeth for any reason
• Any child suspected of having dental crowding

…should definitely be examined by an orthodontic specialist.