(1) When maxillary incisors erupt, there is often a gap between the two incisors. When they erupt completely, the gap gradually disappears and the position of the front teeth turns to normal.
(2) When the mandibular central incisor erupts, if the deciduous central incisor has not fallen off, it erupts on the lingual side. After the reserved central incisors are extracted in time, they can be adjusted forward to the position of dental arch.
(3) Tooth deviation after eruption of some maxillary lateral incisors. This is because when the maxillary canines develop in the jaw, if the jaw grows insufficiently, the canines will squeeze the roots of the inverted incisors, resulting in the long axis of the lateral incisors shifting. When the alveolar bone grows and the canine erupts, the compression on the root of the lateral incisor is relieved, so that the deviation can be corrected and the normal position can be restored.
(4) Some permanent incisors may be crowded after eruption, which is often adjusted after replacement of deciduous molars. Because the width of deciduous molars is larger than that of replacement teeth, the gap left during replacement can be used to adjust the position of front teeth.
In short, children need to be carefully observed during tooth replacement. If it is a temporary problem that can be adjusted by themselves, no treatment is needed; If it is not a temporary problem, it needs to be dealt with in time.