A dental abscess (also termed a dentoalveolar abscess, tooth abscess or root abscess), is a localized collection of pus associated with a tooth. The most common type of dental abscess is a periapical abscess, and the second most common is a periodontal abscess.In a periapical abscess, usually the origin is a bacterial infection that has accumulated in the soft, often dead, pulp of the tooth. dental abscess (also termed a dentoalveolar abscess, tooth abscess or root abscess), is a localized collection of pus associated with a tooth. The most common type of dental abscess is a periapical abscess, and the second most common is a periodontal abscess.
The Duet (1628), by Hendrick ter Brugghen. A duet is a musical composition for two performers in which the performers have equal importance to the piece. It is often used to describe a composition involving two singers. It differs from a harmony, as the performers take turns performing a solo section rather than performing simultaneously.
Heroic Couplet. Definition: Heroic couplets are rhyming pairs of verse in iambic pentameter. What on earth did these couplets do to become heroic? Did they pull a cat out of a tree or save an old lady from a burning building? In fact, no. They're called heroic because in the old days of English poetry they were used to talk about the trials and adventures of heroes. Heroic couplets totally ruled the poetry scene for a long time, especially in the 17th and 18th centuries, when a dude named Alexander Pope was rocking the neoclassical world with works like Sound and Sense, which just so happens to be written in heroic couplets.