I Had A Very Bad Habit Of Chewing Gutka Which

I had a very bad habit of chewing Gutka which I left three years ago , but still eat tobacco,The result is that my mouth opens not properly,hardly 01 fingure size.
The fear I have not ever seen the any doctor, it is possible to treat drug and injection
But the operation was almost forced,I heard that after the operation goes wrong face shape,
Therefore request that the appropriate guidance
Regards
M