Please get teeth removed by oral maxilofacial surgeon

1) Apply any healing gel (eg: dologel -CT) on that particular area 3times/day 2) betadin mouth gargle 3-4times/day

Hello It may be because of cheek bite post treatment and it may be the effect of anesthesia as you dont feel any pain on bite once anaesthesia is given. As seen in the pic, the situation seems nothing serious. As time passes everything will be healed

Hello It could be a wound due to biting while your mouth was still in anaesthesia after tooth extraction. It can also be a portion of the impacted lower wisdom tooth.

Hello.. Welcome to practo.. This might be an injury to the tissue during impaction.. I advice you to apply coconut oil thrice a day for five days. Also apply dentogel in that place for two days, twice a day for five minutes, a pea size quantity and rinse it off. Avoid eating with ointment. If you feel any discomfort or no healing means visit the dentist as soon as possible.

That's fine as it happened due to impingement of earlier upper wisdom tooth,  and will heal soon of it's own. But get the lower wisdom tooth examined,  it looks like it decayed and needs an extraction as well

Lets keep it simple, that hole was because your upper tooth was constantly hitting the lower region. Take hiora gel which would fasten up the healing process n clear the infection