6. Conclusion
Radicular cyst in deciduous teeth can cause local pain swelling and apical bone destruction. In severe cases, they may cause extensive bone destruction and affect the inherited permanent tooth germ, resulting in the impaction of inherited permanent teeth. Therefore, early detection, diagnosis, and intervention should be carried out for radicular cysts in deciduous teeth. Small radicular cysts in deciduous teeth often resolve spontaneously after the extraction of the affected deciduous teeth. For a large range of radicular cysts in deciduous teeth, relatively conservative treatment schemes, such as bagging or decompression with drainage, should be considered to preserve the permanent tooth germs under the deciduous teeth as much as possible.
For inherited permanent tooth impaction or even root dilaceration, early orthodontic traction should be performed to move the root from the bone cortex into the cancellous bone to obtain growth space. This process can increase the root length and reduce the crown-root angle. Even for curved teeth with short roots or bone fenestration after traction, the long-term postoperative effect of traction treatment may be ideal. At the same time, orthodontic traction can avoid alveolar bone atrophy and adjacent teeth inclination following teeth loss. Even if the tooth becomes loose over time due to unbearable chewing force, it preserves sufficient alveolar bone mass for adult implant restoration.