I have high arched palate . due to this i am finding difficulty in my speech if i do plastic surgery then my speech will improve or not???

Palatal surgery: High palate are associated with narrow maxillary development, and speech is associated with normal maxillary development. See an oral surgeon or and orthodontist to determine the possible cause and thus treatment possibilities. Speech may improve with maxillry palatal surgery, but speech therapy may be needed.

Speech therapy : A high, arched palate means that some sounds, particularly those involving precise contact between the tongue and the palate - N. The speech therapy will result in improved speech. You also can talk to an orthodontist. Surgery is a last resort. Good luck.