Do post extraction of 4 teeths will lead to TMJ and airway problem? (photos)

I'm 32 yrs old male and currently going with braces. As per the orthodontist - need to get ready for extraction of 2 upper premolars (Right & Left) and 2 lower premolars (Right & Left) for getting better smile. Kindly suggest me do extraction of 4 teeths are required in my case. Do their are any disadvantages of removing permanent teeths. As read lots of things like TMJ and Airway problem post extraction of permanent teeth at the after 15 yrs.

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