Will Expanding Dental Arches Also Expand Mouth?

You are experiencing what's called parasthesia.  It can result from an extraction during which the nerve was damaged.  It can take years for the feeling to come back.  Speak to an oral surgeon.

Composite bonding does not need to be replaced often;  it could last for decades depending on varying factors.  Most importantly, the longevity generally depends on the doctor's training and clinical skills, as well as background knowledge and quality of the materials that...

The short answer is, 'yes'.  You can bond at the gumline, but it usually doesn't last long.  Your gums receded probably due to brushing too hard and having a thin layer of underlying bone (called by dentists "a thin bone type").  A better solution would be to have a periodontist cover the ex...