2. Orthodontic banding
1)
Instruments
ⓐ double beak band forming
plier ( Howlett band forming plier ) or Peak band forming plier
ⓑ Johnson band contouring plier
ⓒ
Del-a-Rosa plier ( if, present )
ⓓ
band seater ( if, present )
ⓔ heavy
scaler
ⓕ How plier
ⓖ
welder
ⓗ Scissor
ⓘ
band material
2)
Materials for orthodontic band
ⓐ Gold
alloy
Chrome-Cobalt
stainless alloy
ⓑ Orthodontic band
(1) strips, rolls,
precut blanks ( precontoured )
(2)
preformed, contoured and seamless band
ⓒ
anterior teeth ; 0.003" or 0.004" x 0.125"
canine
& premolar ; 0.004" x 0.150"
molar
; 0.005" or 0.006" x 0.180" or 0.200"
3)
Requisites of orthodontic band
ⓐ close
adaptation
ⓑ 필요 이상으로 subgingival
extension되서는 안된다.
ⓒ 충분한 edge
strength
ⓓ tarnish에 저항성
ⓔ
원래의 shape을 유지하려는 springness가 있어야 한다.
4)
Indications for banding
ⓐ heavy force를
받을 치아
ⓑ labial과 lingual attachment를
필요로 하는 치아
ⓒ short clinical crown을
갖는 치아
ⓓ bonding을 할 수 없는 치아
5)
banding technique
ⓐ direct method
ⓑ indirect method