Yes, dentists treat gingivitis and other cases including repair, removal and padding, dental bleaching, orthodontia, gum cleaning, Hollywood smile, dental surgeries, calculus, cavity and dental veneers
Dentistry is a specialty with sub-specialties like pediatric dentistry, orthodontia, oral rays, dental surgery...
Maxillofacial includes a range of common oral surgical problems (eg. impacted teeth, dental implants), jaw and congenital facial disproportion, facial trauma, oral cancer, salivary gland disease, temporomandibular joint disorders, and various benign pathologies (eg. cysts and tumours of the jaws).
One of the complications of wisdom tooth extraction is that there is persistent pain in the area of the wisdom tooth - numbness in the cheek due to anesthesia - and the complications will end overtime, but if you are worried, you must go to a dentist as soon as possible.
There are two types of orthodontics that will be more used and effective. It is the fixed orthodontic, which is a type that will not be taken off before the period specified by the dentist, and the portable, which can be taken off at any time. And this helps the person to take it off at the appropriate time for them.