下颌第三磨牙阻生较常发生，双侧下颌第二、三磨牙同时阻生尚属少见，现报告１例。患者，男，１８岁，因右下后牙区反复疼痛一月就诊。检查：６┼６牙列完整，８７｜未见萌出，牙龈无红肿，右侧其余牙检查均无异常发现。｜７前倾部分阻生，｜８未见萌出，颌骨全景片如图。... Impacted mandibular third molars occurred more often, both bilateral mandibular second and third molars impacted simultaneously rare, it is reported in 1 case. Patient, male, 18 years of age, due to repeated pain in the lower right posterior teeth area January treatment. Check: 6 ┼ 6 dentition complete, 87 | no eruption, no swelling gums, the right side of the remaining teeth were no abnormal findings were found. | 7 forward part of the impaction, | 8 no eruption, jaw panoramic picture. ...