hello and welcome to HCM forum,
i am glad you posted your query, i would like to inform you that gap between upper front two teeth is due to a thick frenum(muscle) which prevents the two teeth from coming in contact.
i have not checked you clinically ,therefore i will not be able to tell you if you need a surgical removal of the frenum or not, but as your orthodontist has not performed a frenectomy
prior to your treatment,then its not needed.
But , as a normal healing process, frenum will take the desired shape and close the gap.
after completion of your orthodontic treatment, you will be given retainers to wear, which will keep your teeth in position.
i would advise you to talk to your dentist
regarding frenectomy once.
But, if its not needed in your case, then do not worry, the frenum will take a normal shape gradually.
i hope i answered your query,
i wish you good health,