Sadly, my wisdom teeth were also taken from me before I could make my own medical decisions. However, I don't think this issue is so simple that we can just say our facial form would be better if only we still had our wisdom teeth. In contrast to extracting other permanent teeth (like bicuspids for example), the decision to extract the wisdom teeth probably means that they were already impacted or lacked the space to erupt without complications. It's unlikely that wisdom teeth would be extracted if they have already come in successfully. This means that the problem of maxillary deficiency predates the removal of the wisdom teeth. We were already in the vicious cycle of craniofacial dystrophy, and losing the third molars was just another step in the wrong direction. That being said, in people who have enough space for their wisdom teeth to come in, they probably help serve as a stopgap to prevent some of the future downswing which occurs through aging. Some people who haven't had extractions find that their wisdom teeth start to erupt as they expand their dental arches. For those of us who have already had them removed, it shouldn't prevent us from achieving transverse or sagittal expansion, but we might need to be more careful to avoid relapse by fastidiously practicing good posture and function.