China now boasts seven of the 10 longest bridges in the world, all built within the past decade. Such engineering feats were once mainly the province of the United States, which for much of the latter half of the 20th century boasted most of the longest bridges in the world. Here are the 10 longest bridges in the U.S., and no matter how well traveled you are, four or five of these bridges will come as a surprise.
There are two types of neck braces: soft and rigid. A soft cervical collar is made from thick foam rubber covered in cotton. It is used to support your neck and control pain after an injury (e.g., whiplash).
Lingual braces are hidden braces. They get fixed to the inside of a personâs teeth instead of the outside of the personâs teeth. They are still made up of brackets and wires, but nobody will be able to see them. Lingual braces arenât quite the same things as traditional braces (whether those are made up of metals or ceramics). With these braces, the patient does not have brackets bonded to the teeth and arch wires held in by elastics. With these braces each bracket is custom made to fit each tooth inside of a patientâs mouth.