In hip hop culture, a grill (most commonly referred to as grills or grillz), also known as fronts or golds, is a type of dental jewelry worn over the teeth. Grills are made of metal and are generally removable. They began to be worn by hip-hop artists in New York City in the early 1980s, and upgraded during the 1990s in Oakland. They became even more widely popular during the mid-2000s due to the rise of Southern hip hop rap and the more mainstream pop culture status hip hop attained.
Dental composites.Glass ionomer cement - composite resin
spectrum of restorative materials used in dentistry. Towards the GIC
end of the spectrum, there is increasing fluoride release and increasing
acid-base content; towards the composite resin end of the spectrum,
there is increasing light cure percentage and increased flexural
strength.
Dental composite resins (better referred to as "resin-based composites" or simply "filled resins") are dental cements made of synthetic resins.
Synthetic resins evolved as restorative materials since they were
insoluble, of good tooth-like appearance, insensitive to dehydration,
easy to manipulate and inexpensive. Composite resins are most commonly
composed of Bis-GMA and other dimethacrylate monomers (TEGMA, UDMA, HDDMA), a filler material such as silica and in most applications, a photoinitiator. Dimethylglyoxime
is also commonly added to achieve certain physical properties such as
flow-ability. Further tailoring of physical properties is achieved by
formulating unique concentrations of each constituent.[1]
Many studies have compared the lesser longevity of resin-based composite restorations to the longevity of silver-mercuryamalgam
restorations. Depending on the skill of the dentist, patient
characteristics and the type and location of damage, composite
restorations can have similar longevity to amalgam restorations. (See Longevity and clinical performance.) In comparison to amalgam, the appearance of resin-based composite restorations is far superior.
