Ikea built in kitchen, the drawer face fell off the metal gliding part. It looks like you'd need some sort of angled screw driver to get it back it, because the screws don't go through to the front of the drawer. Or to take the metal part apart, but you'd also need a special tool for that . . .
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cabinets and cupboards.