Double rows of teeth, sometimes called "shark teeth," occur when permanent teeth erupt behind baby teeth that haven't yet fallen out. This happens because the permanent tooth doesn't develop directly underneath the baby tooth, causing both to remain in the mouth simultaneously.
Understanding the Phenomenon
This common occurrence isn't a single cause but rather a result of several factors affecting tooth development:
- Incomplete Resorption of Baby Tooth Roots: The roots of baby teeth usually dissolve, allowing them to loosen and fall out naturally, making way for permanent teeth. If this resorption process is incomplete or delayed, the permanent teeth erupt behind them, resulting in a double row. [Source: kidsdentalsmile.com]
- Misaligned Tooth Eruption: Permanent teeth may not always erupt in the correct position. If a permanent tooth fails to develop directly below its baby tooth counterpart, it may emerge behind it, creating the appearance of two rows of teeth. [Source: northstreet.dental, brushforkids.com]
- Hyperdontia: This is a condition where extra teeth develop. These additional teeth can appear alongside the normal set, leading to overcrowding and the appearance of two rows. [Source: lunapediatricdentistry.com, my.clevelandclinic.org, webmd.com]
What to Do
If your child develops double rows of teeth, it's crucial to consult a pediatric dentist or orthodontist. They can determine the underlying cause and recommend the best course of action. This might involve:
- Monitoring: In some cases, the baby teeth may naturally fall out over time, resolving the issue.
- Extraction: The dentist might recommend removing the baby teeth to prevent overcrowding and ensure proper alignment of the permanent teeth.
- Orthodontic Treatment: If the double row results in severe crowding or misalignment, orthodontic treatment may be necessary to correct the position of the teeth.
This condition isn't necessarily a serious concern but requires professional attention to ensure healthy and properly aligned teeth. Early intervention is often beneficial.
