With a manual toothbrush, you should position the brush at a 45 degree angle toward the gums and brush in circular motion. In addition, do not use straight baking soda or salt when brushing your teeth. Most of these brands will abraid your teeth and gums. It is important to keep your teeth and gums clean to prevent disease. Also, don't forget to floss.
Gingival recession causes exposure of the root of the tooth.
You should not avoid cleaning this area as the root of the tooth is more susceptible to decay. Occasionally, exposed roots become sensitive to hot, cold, sweet, sour, and pressure. If you experience this, toothpaste for sensitive teeth usually alleviates the sensitivity. Gingival grafting procedure may replace lost gum tissue. Gum tissue does not regenerate or heal like skin.