A visit to a dentist will confirm if it is a milk tooth that is yet to fall off. The dentist might need to take an X-ray to confirm it. If it is a milk tooth, it is relatively easy to remove under simple anaesthetic to make the region numb. No, it is not a complex process. Recovery is relatively painless after the first day or two. Regarding the misaligned teeth, it depends on the severity of the misalignment. A qualified orthodontist specializing in braces and aligners can help you correct it.
Next Steps
visit the dentist, preferably an orthodontist