Can white fillings or something like that work on the gapsin my teeth?

Perhaps but...: Whether or not it should be done, is a very different question. It depends upon many factors, such as your bite, health of your teeth and gums, amount of spacing, symmetry, long term prognosis, your expectations, etc. Discuss all your options, along with pros and cons and costs of each with a dentist who can actually examine you and see x-rays of your teeth.

Yes: Gaps between teeth can be closed in many ways, and cosmetic teeth bonding using composite resins, the tooth-colored material used for fillings, is one of them. Porcelain veneers and orthodontics, including invisalign, can also close the gaps. Various factors help determine the best solution for you, and you need to get opinions from one or two dentists to chart a course of treatment.

White fillings: Yes, if the gaps are reasonable , a trained dentist could do bondings or the white fillings to close the gaps. Consult with a dentist who does cosmetics dentistry. Other options are available as well if the white fillings don't work for you. Hope that helps.