I have been wearing braces since the last one year for overlapping and forward protruding teeth. All four first pre-molars were extracted for the same. Now my front teeth are aligned and the gaps are reducing, but the teeth with the anchors have moved forward. This has resulted in gaps between my molars. My dentist says the gaps will close after treatment, but I am concerned. Also, if I put my tongue in the gap, it pain in the back of my head. Please advise.