Methods and systems for forming dental attachment formation apparatuses. Methods may include creating a virtual dental attachment formation apparatus including a body having a surface shaped to conform to contours of a virtual model of a patient's dentition, a well in the body that is shaped to receive a dental attachment, and a light path directed through the body to the well. A physical dental attachment formation apparatus may be manufactured based on the virtual dental attachment formation apparatus. At least a portion of the body of the physical dental attachment formation apparatus may be made of a light transmissive material. The physical dental attachment formation apparatus may include an opaque portion arranged to keep light from illuminating another portion of the body other than the well.