Single dentition is fine. I have seen people with single dentition, but it is not suitable for everyone. Generally, the upper and lower dentition are adjusted together, so that they can be adjusted together. If you have only one dentition, your upper and lower teeth will not be neutral. Simply put, it is possible that after you finish the dentition, the upper and lower teeth will not be aligned. Moreover, the position of the upper and lower teeth is standard, and there are requirements for which cusp is facing which cusp. If you like,

The principle of orthodontics is the reconstruction of alveolar bone, which has little to do with the condition of the tooth itself, except that it is serious because of the inconvenience of orthodontic cleaning, and there are cases of excessive exposure or loosening of the root, but you are not.