I am asking a question regarding my daughter who is 3 and 1/2. She was seen by her dentist a few months back. They performed a cleaning and also put sealant on her molars, as they have deep grooves. I just recently noticed a few dark spots in her molars, but I am wondering if that is due to the deep grooves. Everything looked good, the dentist said a month ago, so I am quite alarmed if she has a cavity in that short amount of time. May I please provide you with a picture?