Consider the following examples of two different types of statistical investigations. Example 1 Radio rating services sometimes collect data on listenership by asking participants to record the date, time, and station each time they listen to the radio.
Popular types of invisible braces include ceramic brackets, inside braces and clear aligners. Ceramic braces are just like metal braces, except that they use tooth-colored brackets (and sometimes tooth-colored wires) rather than metal to straighten teeth.
If you require cervical spine surgery, or if you've experienced trauma or injury to your neck, you may need to wear a neck brace. Neck braces are among the most common of all spinal braces (which your doctor may call orthoses or orthotics). There are many kinds of neck braces, and the most common ones are outlined below. If you'd like to read a general article that describes all the types of spinal braces, please read our spinal bracing overview. Neck braces, which are also called collars, serve a variety of purposes. They can stabilize your neck after cervical spine surgery, or they can provide non-surgical relief if you've experienced trauma or injury to your neck (from whiplash, for instance). This article will cover the most commonly prescribed neck braces: 1  Soft and Hard Collars. 2  Philadelphia Collar. 3  Sterno-occipital-mandibular Immobilization Device (SOMI) 4  Halo.