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Why Are My Top and Bottom Teeth Not Aligned?

Published in Orthodontics 3 mins read

Your top and bottom teeth might not be aligned (a condition called malocclusion) due to various factors relating to jaw development, genetics, habits, or dental issues.

Potential Causes of Misaligned Teeth

Here's a breakdown of common reasons for teeth misalignment:

  • Jaw Size and Shape:

    • The size and shape of your jaws are primarily determined by genetics. If your jaw is too small to accommodate all your teeth, it can cause crowding and misalignment. The reverse can also be true, creating gaps.
  • Genetics:

    • Just as you inherit physical characteristics like height and eye color, you can inherit jaw and tooth alignment traits. If your parents had misaligned teeth, you are more likely to have them as well.
  • Childhood Habits: Certain habits during childhood can significantly impact tooth alignment:

    • Thumb Sucking: Prolonged thumb sucking, especially beyond the age of 3, can push the upper front teeth forward and cause an open bite (a gap between the upper and lower teeth when the mouth is closed).
    • Tongue Thrusting: This involves pushing the tongue forward against the teeth during swallowing or speaking, which can also lead to an open bite or protrude front teeth.
    • Pacifier Use: Similar to thumb sucking, prolonged pacifier use can affect tooth alignment.
    • Prolonged Bottle Feeding: Especially when the child is lying down.
  • Dental Issues:

    • Extra Teeth (Supernumerary Teeth): Having extra teeth can cause crowding and push other teeth out of alignment.
    • Missing Teeth (Hypodontia): Gaps left by missing teeth can cause adjacent teeth to shift and tilt, leading to misalignment.
    • Impacted Teeth: When teeth are blocked from erupting properly (like impacted wisdom teeth), they can put pressure on other teeth and cause them to shift.
    • Abnormally Shaped Teeth: Teeth with unusual shapes can also contribute to misalignment.
  • Trauma:

    • Injuries to the face or mouth can cause teeth to shift or be knocked out of alignment.
  • Birth Defects:

    • Conditions like cleft lip and cleft palate can affect the development of the jaws and teeth, leading to malocclusion.

Addressing Misaligned Teeth

If you are concerned about your tooth alignment, it's best to consult with a dentist or orthodontist. They can properly evaluate your specific situation and recommend appropriate treatment options, which may include:

  • Braces: Traditional or clear aligners (like Invisalign) to gradually shift teeth into the correct position.
  • Retainers: Used to maintain the new alignment after braces or aligners are removed.
  • Tooth Extraction: To alleviate crowding.
  • Surgery: In severe cases, surgery may be needed to correct jaw alignment.

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