### device | dental appliance:

Denture
* also can dislodge.
* are dental appliances
  - false teeth
  - located in mouths
  - one of the first things to become loose when people lose weight
  - removable oral appliances that replace teeth
  - used for eating
  - very difficult to wear, especially for profoundly disabled people
* can also be uncomfortable, and they are difficult to keep in place
  - break when dropped into a sink or on a floor
  - cause bone loss which leads to a sunken face and rapid aged appearance
  - drastically affect the way one eats, chews, tastes, and digests their food
  - help create a seal around the victim's lips
  - never replace the function of natural teeth unless supported by implants
  - warp if placed in hot water
* do exactly the same work as natural teeth.
* have the opposite effect.
* involves the replacement of missing parts of teeth, bone, gums or facial structures.
* make it difficult to sense whether food is fully chewed before it is swallowed
  - people appear to age more quickly
* take weeks or months to be made.

### device | dental appliance | denture:

Complete denture
* are removable appliances used when no teeth remain.
* rely on suction to maintain their position in the mouth.

Full denture
* Full Dentures are removable replacements after all the teeth are removed.
* can last for many, many years.
* replace all of the teeth in either the upper or lower part of the mouth.
* stay in place by resting on the gum ridges.

Partial denture
* are dentures
  - generally easy to wear and easy to get used to
* can last for many, many years.
* replace one to several teeth.

Retainer
- fees
* can also move teeth, but have certain limitations.
* maintain placement of teeth after the removal of braces.

### device:

Detector
* Most detectors consist of sensors
  - simply indicate the arrival of energy
  - transform energy
* Some detectors also flash a bright light for the hearing impaired
  - consist of tubes
* Some detectors detect microwave radiation
* Some detectors have crystal
  - fields which vary from moment to moment, constantly shifting around
  - spatial resolution
  - indicate light
* Some detectors use for light sense applications
  - lasers
* are devices for indicating the passage or presence of vehicles
  - electronic equipment
  - part of radio receivers
  - rectifiers
  - used by observers
* are used for monitors
  - responses
  - senses
* cause signals
  - stimulation
* count the vibrations of the atoms in the vacuum.
* detect effects
  - the presence of particles and measure one or more of their properties
* includes sections.
* measure carbon-monoxide concentrations and exposure time.
* measure the energies of the combined gamma rays, which are unique for each element
  - rays that pass through and send the measurements to a computer
* provide detection.
* relying on elastic scattering are called fast neutron detectors.
* respond to radiation by producing various physical effects which can be measured.
* solid-state silicon photocell.
* sound an alarm when a danger level in the air is reached.
* tell physicists just what new particles have been formed from beam collisions.
* use technology.

### device | detector:

Flame detector
* device which detects the flame by analyzing the color.
* sense infrared, visible or ultraviolet radiation from a fire.
+ Instrumentation, Examples: Science :: Measuring tools
  * Examples of instruments are valves, transmitters, flame detectors and analyzers. Transmitter is a electronic device or tool which sends or receives a signal through electromagnetic radiation. Flame detector is a device which detects the flame by analyzing the color.

Heat detector
* are no substitute for smoke detectors.
* monitor room temperature to provide an alarm in the event of fire.
* respond to body temperatures.
* sense abnormally high temperatures.
* use either a fixed temperature level or a rise in temperature to produce an alarm.