This document discusses self-correcting anomalies that occur during different periods of dental development from pre-dentate to mixed dentition. During the pre-dentate period, anomalies like retrognathic mandible and infantile swallow are usually corrected on their own. In the deciduous dentition period, deep bite, flush terminal plane, and physiologic spacing are self-correcting. During mixed dentition, anterior deep bite, end-on molar relation, mandibular anterior crowding, and the ugly duckling stage tend to resolve without treatment. The document provides classifications and descriptions of each anomaly and the period in which they typically self-correct.