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颏部成形手术可使面下1/3的外形发生显著的稳定的变化,且不影响咬合关系,因其适应症广而得到广泛应用。水平“T”形颏成形术是一种改良的手术方法,可使颏部获得更大徙前。并可获得较窄的颏部外形和矫正下颌不对称。手术方法手术采用全麻.口内进路显露骨性颏。口内切口呈阶梯形,以便术后分两层关闭刀口。注意保护颏神经的完整性.骨膜下分离应延伸至双侧颏孔的后下方,以便充分显露手术野.
Thoracic surgery can make the shape of the surface under the 1/3 significant stable change, and does not affect the occlusion, because of its wide indications and widely used. Horizontal “T” shaped chinoplasty is an improved surgical procedure that allows the chin to gain greater pre-migration. And can get narrower chin shape and correction of mandibular asymmetry. Surgical methods of surgery using general anesthesia. Oral approach revealed bony chin. Mouth was a trapezoidal incision, so that after surgery divided into two layers to close the knife. Care should be taken to protect the integrity of the chin nerves Subperiosteal dissection should extend to the posterior lower side of the bilateral lingual foramina so that the surgical field is adequately revealed.