I have noticed that my gum line looks like it is receding and my tooth root may be exposed (Photo)

there are different causes of gum recession clenching/ Grinding orthodontic treatment aggressive brushing smokinggenetically thin tissue type from the picture.  You do show some  wear and flattened teeth. So you might be a clencher/ Grinder a night guard will prevent further damage to your teeth and surrounding tissue/ bone getting a white filling to patch up the exposed root is exactly what it sounds. A patch work   The fillings might even pop off when u grind/ clench these exposed roots could be covered and the gum could be regenerated to the natural state. comparing different gum graft techniques and results ; 1- gum graft with your palatal tissue as donor will give you the best root coverage. Longer lasting results 2- gum graft with donor skin as a source will give you comparable results. But the regenerated  tissue might be thin. So more prone to recede again if causes of recession not eliminated 3-pinhole surgery will provide good results if you have some thick gum tissue remaining. The results might not be as long lasting as palatal donor technique the advantage of 2, 3 are - lowered surgical discomfort - reduced number of surgeries needed for multiple recession sites get a referral to a periodontist to discuss ur options further. the sooner the treatment the better the results good luck

After looking at this photo, it looks as though you are a clencher or grinder.  This is likely to be the cause of your receding gums on that tooth.  I would recommend having a composite resin placed over that tooth to protect it.  In addition, I would recommend that you get fitted by your dentist for a night guard.  This will help slow down the recession and help you keep the remaining enamel that you have left on your teeth.