Hi..
Can understand your concern..
As per your complain you are suffering from ORAL SUB MUCOUS
FIBROSIS (OSMF). In this case once fibrosis is taken place it is really a challenge to increase the mouth opening and its really a good sign that you have increased mouth opening from 12 mm to 18 mm..
In case of steroid injections its a course of mostly 10 injection and 4 are not sufficient to show results..
Other thing is that if you are doing mouth exercises it can help you in improving the mouth opening as multiple surgical procedures can lead to scar formation which can shrink the tissues and further reduce the mouth opening and it is not advisable..
You can also start with antioxidant capsule containing
lycopene one tablet per day for a month..
You can also take a proper course of
Hydrocortisone injections weekly and can add up topical
steroids and topical hyluronidase for better results..
You should never consume tobacco in future as well as you will have to continue doing your exercises as well as keep checkups done by your dental surgeon for avoiding future complications.
Hope your query is solved..
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Thanks and regards..
Dr.Honey Nandwani Arora