Rachel had braces previously. Her complaint was that her upper front teeth are still protruding and look like rabbit teeth. Rachel had 4 premolars which typically are extracted to provide space to bring front teeth in. But she does not have any more space to bring front teeth in. Interproximal reduction or shaving proximal surface of teeth can be done but, in her case, proximal reduction amount to achieve the goal is too much and it will harm the longevity of teeth. We discussed this and we decided to place an appliance to push back molars back. Bottom picture shows the space we created with appliance. I am doing a final tune of her case now. We will finish her orthodontic treatment soon this year.