If there are spaces which have opened up gradually . Trust me to close those spaces the best what you could do is braces. Do not undergo any other Dental procedures which promise you instant results as they will be only short term.
Next Steps
Please Visit an Orthodontist and ask for the treatment Time and Estimate.
Health Tips
Now a days there are clear Aligners or invisible braces which help finish treatment much quicker without even showing your braces to anyone...