cortices. 1  1a (1) : the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially : cerebral cortex (2) : the proteinaceous usually pigmented layer of a hair below the cuticleb : the outer part of some organisms (such as paramecia)
If a toenail has completely fallen off, it can take up to 18 months for it to grow back. A toenail can take longer to grow back if the nail bed has permanent damage. In some cases, old nails do not completely fall off, and they act as a protective...
Healing Ingrown Toenail. I know that an injury towards the cuticle of the nail area takes about 9 months to grow all the way out on your big toe. As far as an ingrown nail, it has to be treated or partially removed before the healing starts. You will feel much better within a day or two, but still takes longer to heal correctly. Warm soaks in saltwater will help ease the pain and heal it faster. Tea Tree Oil is helpful too. It will act as a soothing antiseptic and keeps fungus under control.