견고 구외 골신장술을 이용한 구순구개열 환아의 치험례
Maxillary advancement using rigid external distraction(RED) in cleft lip and palate patient : case report
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구순구개열 환자에서는 이른 시기에 시행된 수술로 인한 구순이나 구개부의 반흔 형성으로 섭식장애나 발음장애를 동반한 상악의 열성장이 나타나게 된다. 때로는 집중적인 교정치료 후에도 심한 상악골 저형성증을 보이며, 이러한 경우 성장이 완료된 후에 골이식을 동반한 악교정 수술로 상악골을 전방이동시켜 안모의 개선을 도모하기도 한다. 그러나 이러한 상악골의 전방이동은 연조직의 과도한 신장으로 인한 술후회귀현상, 추가적인 골이식이 필요하다는 한계를 가지고 있다. 골신장술은 이러한 한계점을 극복하는 최신 치료방법으로 구순구개열 환자, 두개골 융합증을 나타내는 환자 등에서 상악골을 포함한 두개 안면골의 개선에 많이 이용되고 있다. 특히 구외장치를 이용하는 골신장술은 골신장기간 중에 견인 방향의 조절이 보다 쉬우며, 충분한 양의 골신장이 가능하여 보다 좋은 결과를 얻을 수 있다. 본 증례는 상악 열성장을 보이는 구순구개열 6세 7개월의 여자 환아로, 변형된 구내 르포씨 1형 골절단술(modified Le Fort I osteotomy) 후 두개골을 고정원으로 이용하는 견고 구외 골신장술을 통해 상악골을 전진시켜 양호한 결과를 얻었기에 이를 보고하는 바이다.
Abstract
Patients with cleft lip and palate present severe maxillary hypoplasia due to scar of lip and palate, often accompanied by compromised mastication, speech abnormalities. Sometimes maxillary hypoplasia persist even though active orthodontic treatment was done. In theses cases, patients born with cleft lip and palate will be potential candidates for maxillary advancement with bone grafting after growth to correct the functional deformities and improve aesthetic facial proportions. But, maxillary advancement using standard surgical approaches has several limitations: increased relapse tendency after maxillary advancement, necessity of additional bone graft and mandibular setback surgery Distraction osteogenesis is current treatment modality to overcome these limitations, thus has become popular for treatment of maxillary hypoplasia associated cleft lip and palate, craniosyntosis. Especially, rigid external distraction, contrary to internal device, has advantages; better vector control of osteotomized segment, effective traction of the bony segments, the ease of the application and removal the distraction device. This study showed that relatively successful result could be generated by using rigid external distraction osteogenesis(RED) in the case of cleft lip and palate with severe maxillary hypoplasia, 6 years 7 months old.
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