The typical range for the eruption of a baby's first tooth is between 4 and 7 months, although there can be some variation. It is possible for a baby to start teething at around 3 months of age, so the small white dot-like structures on your niece's gums could indicate the emergence of her first teeth. Teething can be a challenging and uncomfortable process for infants, which may lead to fussiness, increased drooling, and a tendency to chew on objects or their hands. It is normal for babies to exhibit these behaviors during the teething phase. The timeline for the eruption of a baby's teeth can vary. Generally, the lower central incisors (the two bottom front teeth) are the first to come in, followed by the upper central incisors (the two top front teeth). However, every child is different, and the timing can vary. It's important to remember that there is a wide range of normal development when it comes to teething. The process of teething can take several months to complete, with teeth continuing to emerge gradually. Most children will have a full set of primary (baby) teeth by the age of 2 to 3 years, but again, this can vary. Some babies may get their teeth faster, while others may have a more delayed eruption. If you have concerns or questions about your niece's teething or her oral health, it's best to consult with a pediatrician or a pediatric dentist who can provide guidance, examine her mouth, and address any specific concerns you may have.

Picture is not at all clear, therefore to say something about it would not be wise. Visit a dentist and get it checked in person by the dentist.

It is probably a neonatal tooth that might need removal as it is a source of irritation and interferes with breastfeeding.

Hello Ideally 1st teeth erupting in 6month.may be it is neonatal teeth

Normally first tooth erupts at the age of around 5-6 months. Visit a local pedodontist for physical evaluation.