Obstructed teeth located in the vestibule of the oral cavity do not have to be extracted, if their retention value is high, such as maxillary cuspids, etc., they may not be extracted, if their retention value is not high, such as the third molar that causes diseases in the surrounding tissues, etc., they are usually selected for extraction, as follows. 1. Higher retention value: maxillary cuspids can withstand greater occlusal force and have the role of supporting the angle of the mouth, affecting facial aesthetics. When the maxillary cusp is obstructed, it is usually chosen not to be extracted, and its eruption is helped by orthodontic traction and aligned in the correct position. 2. Low retention value: Obstructed third molars may cause or have caused diseases or symptoms such as wisdom tooth pericoronitis, alveolar bone resorption, food impaction, caries of neighboring teeth, etc., and are generally chosen to be extracted and treated so as not to adversely affect the tissues in the oral cavity. The same disease, the patient’s condition is different, the choice of treatment is different, it is recommended to visit the hospital to receive targeted treatment.