Teng Li, Ren Min, Zhang Zhiyong
Plastic Surgery Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, PR China.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2006 Jul;20(7):709-12.
To explore the indication, advantage and disadvantage of modified or classical technique of intraoral sagittal split ramus osteotomy (SSRO) for correction of mandibular prognathism.
From January 1997 to January 2005, 95 patients suffering from mandibular prognathism or accompanied by other deformities were treated with modified or classical technique of intraoral SSRO. Of 95 cases, there were 34 males and 61 females, aging 15 to 44 years, including 53 cases of single mandibular prognathism, 28 cases accompanied with mandibular deviation, 11 cases accompanied with maxillary retrognathism, 2 cases accompanied with glossacele and 1 case accompanied with malar protrusion. X-ray cephalometry showed: sella-nasion-A point (SNA) 80-83 degrees, sella-nasion-B point (SNB) 80-84 degrees, A point-nasion-B point (ANB)--3-1 degrees. Forty-three cases were corrected by modified SSRO and 52 cases by classical SSRO.
The face appearance and dental articulation of all the patients were improved greatly. In patients by classical SSRO, disorder of local sensibility occurred in 9 cases, mandibular fracture during the cleavage of the ascending ramus in 1 case, significant bleeding in 1 case, postoperative infection in 1 case and postoperative relapse in 3 cases. In patients by modified SSRO, disorder of local sensibility occurred in 2 cases and postoperative relapse in 1 case; no mandibular fracture, significant bleeding, postoperative infection and other complications occurred. With a follow-up of 3 months to 7 years, X-ray cephalometry showed SNA 81-83 degrees, SNB 78-81 degrees and ANB 1-4 degrees.
Modified SSRO is an ideal method of correcting mandibular prognathism, especially severer mandibular prognathism accompanied by mandible deviation deformity.
探讨改良或经典口内矢状劈开下颌支截骨术（SSRO）矫治下颌前突的适应证、优缺点。
1997年1月至2005年1月，采用改良或经典口内SSRO技术治疗95例下颌前突或合并其他畸形患者。95例中，男34例，女61例，年龄15至44岁，其中单纯下颌前突53例，合并下颌偏斜28例，合并上颌后缩11例，合并舌体肥大2例，合并颧骨突出1例。X线头影测量显示：蝶鞍-鼻根- A点（SNA）80 - 83度，蝶鞍-鼻根- B点（SNB）80 - 84度，A点-鼻根- B点（ANB）- 3至1度。改良SSRO矫正43例，经典SSRO矫正52例。
所有患者面部外观及咬合关系均明显改善。经典SSRO患者中，局部感觉障碍9例，升支劈开时下颌骨骨折1例，术中大出血1例，术后感染1例，术后复发3例。改良SSRO患者中，局部感觉障碍2例，术后复发1例；未发生下颌骨骨折、大出血、术后感染等并发症。随访3个月至7年，X线头影测量显示SNA 81 - 83度，SNB 78 - 81度，ANB 1 - 4度。
改良SSRO是矫治下颌前突，尤其是合并下颌偏斜畸形的重度下颌前突的理想方法。
