Are Braces on the Upper Six Front Tooth Effective?

my problem was my two front tooth only for they are slightly slanting inwards which do not look good on photos esp on side and upper views..my dentist said that it is just a minor case and said that I dont need to put braces at all but since I insit on straighting my two front tooth, he put braces only on my 6 upper front teeth, he said that the rest of my teeth are properly aligned and I have a good bite too so no need to disturb the rest of the teeth. my treatment is 8 mos, is it good?