Introduction
postoperative pain, intraoperative bleeding, swelling, abnormal developmental anomalies, tooth
INTRAOPERATIVE BLEEDING, ERUPTION
During the growth and development period, abnormalities in tooth structure, morphology, number, and eruption occur as a result of systemic or local factors. Multiple teeth, also known as extra teeth, are teeth that exceed the normal number of teeth and are numerically abnormal developmental anomalies [According to the state of eruption, multiple teeth can be divided into eruption and ambush type, about 75% of the multiple teeth have been ambushed, and the rest of the extra teeth is part or all eruption [This paper compares different schemes, including piezosurgery, HSCAH, and combined ultrasound knife, and compares the operation time, intraoperative bleeding amount, postoperative pain, facial swelling, and fear. It provides certain theories and data for clinical application. Details are as follows.