Wisdom teeth that grow horizontally are removed by crown splitting according to the level of the blockage. Wisdom teeth growing horizontally are classified into three kinds according to the depth in the bone: high horizontal obstruction, middle horizontal obstruction and low horizontal obstruction, which require preoperative radiographs, gingival flap under local anesthesia, debridement, crown splitting, root splitting, loosening of the affected teeth, extraction, treatment of extraction wounds, and suture closure of the incision.
1. high horizontal obstruction, is the highest part of the tooth parallel or higher than the occlusal plane of the dental arch, need to pay attention to the soft tissue resistance and resistance of neighboring teeth, a single tooth is better than the multi-rooted tooth extraction.
2. Medium horizontal obstruction, the highest part of the tooth is lower than the occlusal plane of the dental arch, but higher than the neck of the second molar, the extraction should pay attention to avoid damage to the neighboring teeth, the extraction should not use the neighboring teeth as a fulcrum, and need to pay attention to the crown of the bone resistance.
3. Low level obstruction, the highest position of the tooth is lower than the neck of the second molar, bone ambulation obstruction belongs to this category. When removing, it is necessary to pay attention to the resistance of the tooth root and the position of the mandibular neural tube, low-level obstruction is usually closer to the mandibular neural tube, avoid touching the mandibular neural tube when loosening the affected tooth and dealing with extraction wounds, and if necessary, it is necessary to use the power instrument to take out the tooth after splitting it.