dental is a stop. Stops are the pure consonants,
and they are divided into three groups, depending on what part of the speech
organ is used to stop the air before the sound of the letter is made. A dental
is a stop that is created when the tongue restricts the air by coming into
contact with the teeth and blocking the escape of air. Notice the role that
the teeth play in the creation of these sounds.
Try making the sounds of
dentals (delta, theta, tau / d, t, th). You will easily see the role the teeth
play in blocking the escape of air in the process of forming this stop.
Note that all three Greek
dentals are in the phrase "the dental." The
other consonants in this phrase are not stops.