Cracking and clicking sounds from TMJs.

Hello to all, I just want to know that why the sounds of cracking and clicking are still coming from my TMJs even after I have gone to a Oral surgeon who made splints for that and I have been wearing them continuously for 2 months. Also I have been doing exercises as suggested by the pysiotherapist. I am also chewing soft foods only and no hard or chewy food. There is no pain or stiffness but the sounds are so loud, embarrassing and self destructive that my routine life is badly affecting by that. Every time I open my mouth for eating, yawning, drinking or for doing some exercises, these sounds just keep coming. This problem is there for the last 4 -5 months. Is there any suggested surgery or operation by which I can get rid of these sounds completely. I have also done the MRI of both the joints and the result is absolutely normal. Please help on this regard as I am also taking supplements to improve bone and muscles power. But again no positive results. Thanks.