Oral lesions, maintain oral hygiene
It might be a little difficult to reach a final diagnosis in your case but there are a few possibilities that I can suggest.
Most importantly, the lesions could just be raised papillae of the tongue. These lesions will settle of their own in few days.
The next possibility is that of trauma from the teeth. In this case, you can very well find out.
The above two are probably not much to be worried about. But if your child also has some whitish coating over the tongue especially in its posterior part along with these white lesions in the anterior part, then a possibility on Candida infection can be kept.
In either case, I would suggest that you give your child lots of oral fluids so as to keep flushing
the area and keep the oral cavity as clean as possible. Most of the times, these lesions tend to subside on their own with proper oral hygiene.
If however, the lesions tend to persist even after a week to ten days or they tend to increase, then you should surely see a nearby doctor and get a proper check up done.
Hope it helps
Dr Geetika Paul