If a doctor can directly determine how many teeth you need to pull out when straightening your teeth, do you still need to take pictures? He said you can determine the position first and then make a mold. Before orthodontic treatment, doctors can roughly judge whether it is necessary to pull out teeth, which tooth to pull out, and the corrective plan based on experience. Shooting is to make the correction plan more accurate, and taking the mold is to look at the situation of the teeth and compare before and after correction. Trust your orthodontist. I hope my answer is helpful to you.