To explore minimally invasive concept, improve clinical application of the technology by analyzing minimally invasive removal of maxillary ambushed supernumerary teeth.

The embedded supernumerary teeth were located with the application of X-ray projection method or cone-beam computed tomography (CBCT) . The individualized surgical approach of the buccal or palate side under local anaesthesia was chosen. Tweenty-one cases of maxillary impacted teeth were extracted through the use of minimally invasive extraction knife and cold light illuminator contra-angle turbine handpiece.

Anesthesia was satisfied and surgery was successful performed in all patients without any damage of adjacent tooth and structural, complications and sequela. Patients were all healed well.

Embedded supernumerary teeth used to appear in the maxillary anterior palate. CBCT images could be used as preoperative routine examination because it can visibly display the location of embedded supernumerary teeth and is beneficial to the implementation of anesthesia, operation plan and minimally invasive surgery. Precise location, individualized surgical approach, the application of cold light illuminator contra-angle turbine handpiece and minimally invasive extraction knife could reduce the operation injury and shorten the operation time. It could be also beneficial to the operation of young children under local anesthesia and reduce the risk of the influence of surgical operation on the development of alveolar bone and jaws in children simultaneously.