Gingivitis is inflammation of the what?

More Questions:

Which river is dammed by the Hoover Dam?

How many pawns does each player have at the start of a chess game?

Who was the first African-American player inducted into the Baseball Hall of Fame?

Who wrote the children's classic "Green Eggs and Ham"?

In which US state is the geographic center of the 48 contiguous states?

The Apgar score is used to measure the color and condition of what?

At what age did Robert Downey Jr. study ballet in England?

What is the name of the mutant rat who serves as the mentor of the Teenage Mutant Ninja Turtles?

What position was first held by Caesar Augustus?

Who played the role of the Joker in the 1989 "Batman" movie?

Terry Nichols was the co-conspirator in what major crime during the 1990’s?

What was the nationality of the first man to conquer the summit of mount Everest?

What does the letter F stand for in JFK's name?

What structure in the back of the brain governs motor control?

What cartoon by Mike Judge is the 1999 film "Office Space" based on?