Objective: To compare the effect of resin-modified glass ionomer cement and conventional glass ionomer cement on orthodonticband cementation.
目的：比较树脂改良型玻璃离子粘固剂和传统型玻璃离子粘固剂对正畸带环的粘接效果。
2
Aim: to discuss how to deal with the band fissure for patients with symmetric extraction teeth in order to avoid food impaction after fixed orthodontic treatment.