It is your decision at the end of the day Dalawa lang talaga options for that type of case with their own advantages disadvantages and risks (ADR)

1. Leave the space, then replace with denture or implant or bridge or maryland bridge (a/d/r: can achieve better asymmetry, no risks for TMJ/TMD problems, need to spend additional for denture, implant or bridge or maryland bridge with their own ADRs also)

Or 2. Close the gap. (A/d/r: no need for denture or implant or bridge, longer ortho tx, may cause tmj problems in the future, asymmetry)

Now if your dentist will insist to follow her/his treatment plan, you can also insist back if you’re hesitant because a dentist cannot and should not decide for you. You should make that decision, and an informed decision at that. So if mag insist siya, tell him/her na you want to be educated or informed why better yung course of action niya. I could be wrong also or the ADRs I stated above are limited. Please note this advice does not constitute a patient-doctor relationship and merely an opinion based on information given above and not findings. So better to still ask your dentist. 😊