Why did it ache a little when i got my front teeth filled if it's not my gums?

Inflammation: If a drill was used to open up the tooth and get rid of the cavity, then heat was generated and this cause inflammation of the nerve of the tooth. Advil (ibuprofen) usually works well with this.

Wedge?: In order to get better contact, a dentist will use a wedge and acetate to form the restoration, this will often cause a tightness and swelling of the gums.