I just got stitches in my mouth 3days ago and they look a tad white inside? (stitches for frenectamy- don't know if i spelled that right)

Normal: Probably combination of dental plaque and DES quizmaster cells. Normal. If you are concerned, however, by all means ask the surgeon to take a look.

Normal: From your description, it is normal, try to keep the area free of plaque and food particles by rinsing.

It's normal but..: Try to keep the area clean and maintain a good oral hygiene, that white stuff on the sutures is plaque forming , they should be out soon.

Stitches: In the absence of seeing a picture, they could have used one of the suture materials which is white- cytoplast, undyed vicryl etc,,,,just dont pull on the area, will disrupt healing

Nothing to worry: These sutures will dissolve after a few days.