Group no
Surface pretreatment
1
35% orthophosphoric acid etching
2
Fissurotomy-bur (Fissurotomy Micro NTF)
3
2W-20 Hz Er,Cr:YSGG laser irradiation
4
2W-40 Hz Er,Cr:YSGG laser irradiation
5
Al
2
O
3
particle size of 30micrometer Cojet-Prep
Table 1:
The enamel buccal/ lingual surface pretreatment methods.
