Hello , its a number of teeth which needs to be extracted so you can plan them accordingly . If there is no pain you can plan them after the trip . Also check for
hb1ac, (if any cardiac problem or taking aspirin he would have to talk to the cardiologist first ) it generally takes a week to heal but depends on patients as well
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if there is no pain, plan it after the trip
take a painkiller along with you for a safer option