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2. Retainer (orthodontics) - Wikipedia

   en.wikipedia.org/wiki/Retainer_(orthodontics)

   Fixed retainers are often used to provide orthodontic retention and avoid relapse. [14] They commonly consist of a wire bonded with acid etch and composite to the lingual/palatal surface of the anterior teeth. In fixed retainers, composite is usually placed to bond and to cover the wire, whilst ensuring no interference in the interdental space.

3. Dental braces - Wikipedia

   en.wikipedia.org/wiki/Dental_braces

   Hawley retainers are the most common type of retainers. This picture shows retainers for the top (right) and bottom (left) of the mouth. In order to prevent the teeth from moving back to their original position, retainers are worn once the treatment is complete. Retainers help in maintaining and stabilizing the position of teeth long enough to ...

4. Resin-retained bridge - Wikipedia

   en.wikipedia.org/wiki/Resin-retained_bridge

   The wing or retainer must be rigid and is usually fabricated from a metal alloy. The inner surface must fit closely to the abutment tooth. The intaglio is treated in some way to enhance the micromechanical adhesion between the prosthesis and the composite resin cement. In the past various methods have been used, ranging from metal-weave ...

5. Bridge (dentistry) - Wikipedia

   en.wikipedia.org/wiki/Bridge_(dentistry)

   The pontic is firmly attached to a retainer at one end of the span (major retainer) and attached via a movable joint at the other end (minor retainer). A major advantage of this type of bridge is that the movable joint can accommodate the angulation differences in the abutment teeth in long axis, which enables the path of insertion to be ...

6. List of auto parts - Wikipedia

   en.wikipedia.org/wiki/List_of_auto_parts

   This is a list of auto parts, which are manufactured components of automobiles. This list reflects both fossil-fueled cars (using internal combustion engines) and electric vehicles; the list is not exhaustive. Many of these parts are also used on other motor vehicles such as trucks and buses.

7. Palatal expansion - Wikipedia

   en.wikipedia.org/wiki/Palatal_expansion

   It is a general rule to expand the maxilla to a point where the lingual cusp of maxillary molar teeth touch the buccal cusp of mandibular molar teeth. Studies done decades ago by Krebs [ 14 ] (1964), Stockfisch [ 15 ] (1969) and Linder Aronson [ 16 ] (1979) showed that about one-third to one-half of the expansion was lost before the expansion ...