I can understand your worry about the temporary veneer snapping off just before traveling abroad.
You need to look at two things here.
1. Is there any tooth sensitivity? If that is the case, then early treatment may be needed
2. How bad does it look? According to you, that is not really a problem.
I would say that in this situation if there is no tooth sensitivity, you should be fine travelling abroad and also waiting through the quarantine, before getting treatment,
All the best and stay safe :)
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Dr. Gupta, MD