Irish word for fun/enjoyment that has been brought into the English language. usu. when mixed with alcohol and/or music. 'Bhi craic agus ceol againn' : We had fun and music. Fun doesn't really cut it though. General banter, good times had by all. Also, a person who is good fun/great company.
Some of the bacteria in plaque cause tooth decay, and some are responsible for periodontal, or gum, disease. Plaque is always with us. A newborn baby's mouth is sterile, but only for the first ten hours or so of life. Tartar is a calcified material that often contains bacterial debris and sometimes plaque.
The exact cause of most canker sores is unknown. Stress or tissue injury is thought to be the cause of simple canker sores. Certain foods -- including citrus or acidic fruits and vegetables (such as lemons, oranges, pineapples, apples, figs, tomatoes, and strawberries) -- can trigger a canker sore or make the problem worse.