Some general dentists do not do extractions at all. Some of them will do simple extractions. Wisdom teeth are often a complicated extraction. Therefore, those extractions are best done at the oral surgeon's office where they are equipped to deal with complications that may arise. Thank you for your question.
It looks like you have established a good home-care routine. Unfortunately, our diets don't play a role in our plaque production. You can try using an electric toothbrush, Sonicare or Oral-B would be good choices. Your dental hygienist can also go over your home-care with you to ensure you are brushing and flossing properly. Thanks for your question!