Milk teeth are neat and the replacement teeth may not be neat, because the milk teeth are small in size and the number of milk teeth is small, while the permanent teeth are large in size and number, so they may not be neat.
1. Milk teeth are the first set of teeth, generally 2.5 years of age began to erupt, twelve or thirteen years of age completely erupted, and the color of the milk teeth is white and small volume, the number of only twenty. At the age of six, the first permanent teeth erupt, namely, the first permanent molar, also known as the “six-year-old teeth”.
2. The permanent teeth are large in size and yellowish in color compared with milk teeth, and are large in size with a number of 28 to 32 in general. If the amount of alveolar bone cannot fully accommodate these permanent teeth, crowding will occur, resulting in uneven teeth. In addition, if the permanent teeth in the process of eruption of milk teeth stagnation or early loss, then the permanent teeth will also be corresponding to the eruption of the obstruction of ectopic growth resulting in dental alignment.
In conclusion, the alignment of milk teeth is not necessarily aligned with the permanent teeth, depending on whether there is enough space on the alveolar bone to accommodate the permanent teeth, and whether the milk teeth fall out at the right time.