1 Either an acute injury near the nail or anything that causes the nail to be damaged repetitively (such as playing soccer) can also cause an ingrown nail.  If a member of your family has an ingrown toenail, then you are more likely to develop one, too.
The troy ounce (symbol and abbreviation: ozt) is a non-SI unit of mass commonly used to gauge the weight of precious metals. One troy ounce (ozt) = 31.1034768 grams (g) = 1.09714286 ounces (oz) = 480 grains (gr).
The pound (abbreviation and symbol: lb) is the unit of mass in several different systems, including Imperial units, English units and United States customary units. 1 pound (lb) = 0.0714285714 stones (st) = 16 ounces (oz) = 453592.37 milligrams (mg) = 0.45359237 kilograms (kg) = 453.59237 grams (g) = 7000 grains (gr).