▁Dam on ▁Bra cket ▁was ▁introduced ▁as ▁Dam on ▁SL 1 ▁Bra cket . ▁A . J . ▁Wild man ▁introduced ▁another ▁bra ck ed ▁called ▁T win lock ▁bra cket . ▁This ▁bra cket ▁was ▁named ▁as ▁Dam on ▁ 2 ▁bra cket . ▁In ▁ 2 0 0 4 , ▁Dam on ▁ 3 ▁bra cket ▁was ▁introduced ▁which ▁was ▁a ▁hy brid ▁of ▁metal ▁and ▁composite ▁material . ▁ ▁Com parison ▁to ▁Con vent ional ▁Bra ckets ▁ ▁El astic ▁Lig ature ▁& ▁Or al ▁H yg iene ▁ ▁One ▁of ▁the ▁most ▁significant ▁differences ▁from ▁conventional ▁dent al ▁bra ces ▁is ▁the ▁absence ▁of ▁el astic ▁lig ature ▁( b ands ▁or ▁t ies ). ▁Self - lig ating ▁bra ces ▁typically ▁are ▁smaller ▁and ▁more ▁a est h etic ▁since ▁a ▁metal ▁door ▁is ▁required ▁to ▁hold ▁w ires ▁in ▁place . ▁They ▁also ▁tend ▁to ▁stand ▁off ▁the ▁teeth ▁further ▁toward ▁the ▁lips ▁and ▁che eks . ▁Pro ponents ▁of ▁self - lig ating ▁brackets ▁say ▁that ▁patients ▁with ▁self - lig ating ▁brackets ▁have ▁better ▁or al ▁h yg iene ▁than ▁patients ▁with ▁conventional ▁brackets . ▁The ▁h yg iene ▁is ▁related ▁to ▁the ▁use ▁of ▁El astic ▁Lig ature ▁which ▁serves ▁as ▁another ▁factor ▁for ▁having ▁pla que ▁being ▁retained . ▁A ▁system atic ▁review ▁and ▁a ▁meta - analysis ▁study ▁done ▁by ▁Yang ▁et ▁al . ▁in ▁ 2 0 1 6 ▁ ▁stated ▁that ▁self - lig ating ▁brackets ▁do ▁not ▁out perform